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Home , Animikie Group, Keweenaw Fault, Lima Mountain, Marshall Sandstone, Midcontinent Rift System, Middle Run Formation

MIDCONTINENT SYSTEM BIBLIOGRAPHY

By

Steven A. Hauck

December 1995

Technical Report NRRI/TR-95/33

Funded by the Natural Resources Research Institute In Preparation for the 1995 International Geological Correlation Program Project 336 Field Conference in Duluth, MN

Natural Resources Research Institute University of , Duluth 5013 Miller Trunk Highway Duluth, MN 55811-1442 TABLE OF CONTENTS

INTRODUCTION ...... 1 THE DATABASE ...... 1 Use of the PAPYRUS Retriever Program (Diskette) ...... 3 Updates, Questions, Comments, Etc...... 3 ACKNOWLEDGEMENTS ...... 4

MIDCONTINENT RIFT SYSTEM BIBLIOGRAPHY ...... 5

AUTHOR INDEX ...... 191

KEYWORD INDEX ...... 216

i This page left blank intentionally.

ii INTRODUCTION

The co-chairs of the IGCP Project 336 field conference on the felt that a comprehensive bibliography of articles relating to a wide variety of subjects would be beneficial to individuals interested in, or working on, the Midcontinent Rift System. There are 2,543 references (>4.2 MB) included on the diskette at the back of this volume.

PAPYRUS Bibliography System software by Research Software Design of Portland, Oregon,

USA, was used in compiling the database. A retriever program (v. 7.0.011) for the database was provided by Research Software Design for use with the database. The retriever program allows the user to use the database without altering the contents of the database. However, the database can be used, changed, or augmented with a complete version of the program (ordering information can be found in the readme file). The retriever program allows the user to search the database and print from the database.

The diskette contains compressed data files. Directions for loading the program are provided below.

THE DATABASE

The database contains information on all aspects of the and mineral deposits related to the Midcontinent Rift System (MRS). Major categories (and keywords) are: geology, mineralization, geophysics, geochemistry, structural geology, , sedimentation, stable and radiogenic isotopes, environmental geology, mining, mineral processing, and specific geographic names, e.g., by state and county, or Canadian province and district, etc.

Five keywords are provided for each reference: Midcontinent Rift System, Keweenawan,

North America, , , and Middle Proterozoic. Since this database is a subset

1 of a larger PAPYRUS database, these words are chosen to assist in separating the MRS references from other references in the database. In actuality, either the keywords "Midcontinent Rift System" or "Keweenawan" will extract the MRS references from the larger database.

In addition to the above keywords, all references are keyworded according to the information provided in the title of the reference. Many of the references are keyworded in more depth from the original articles. Some keywords are used to bring related geological material under one heading for users not familiar with midcontinent rift geology and mineral deposits. For example, the keyword "" not only includes all references on the Duluth Complex, but also includes references on the Beaver Bay Complex, and Logan Sills. References relating to native mineralization in the Upper Peninsula of are all grouped under the keyword

"Michigan Copper District." Where stratigraphic names have changed with time, the most current, accepted name is used as a keyword. For example, Nonesuch Formation and Portage Lake

Series were used in the past, but the database uses Nonesuch and Portage Lake Volcanics.

Also when conducting a keyword search, use the singular form of the keyword with an asterisk "*" at the end of the keyword. This procedure will allow for retrieval of singular and plural forms of the keyword. This procedure will also help with retrieval of all references that have a common root word, e.g., Keweenaw* will retrieve Keweenawan, Keweenaw County, ,

Keweenaw , etc.

Use of the PAPYRUS Retriever Program (Diskette)

The retriever program can be loaded on any DOS-based system, provided that at least

5.6 MB of disk space are available on the PC's fixed disk (C) drive. Once loaded, the files will occupy 4.2 MB of fixed disk space.

2 Loading the program is done by simply inserting the diskette containing the compressed files into the PC's 3.5" (1.44 MB) disk drive (A or B, depending on the machine), making that drive the current drive (by typing "a:" or "b:" at the C:> prompt), and typing "install" at the a:> (or b:>) prompt. The installation file (INSTALL.BAT on the diskette) will then create a subdirectory called

RIFTBIB on the PC's C drive, copy the compressed files to that subdirectory, uncompress them using PKUNZIP, and delete the original compressed files (leaving only 4.2 MB of files). The installation routine will finish by making the RIFTBIB subdirectory current (C:\RIFTBIB). The retriever program can then be initiated by typing "PAPR" at the C:\RIFTBIB> prompt.

Updates, Questions, Comments, Etc.

You can receive an updated version of the database and retriever software (if you need it) for the cost of shipping and disk replacement (or send back the original diskette) by contacting Ms.

Laurie Talbot at the above address or by calling 218-720-4346. Fax messages can be sent to

218-720-9410. If you find errors or wish to contribute references to the database, please contact the author at the above address. An indexed, paper copy of the database will be available at a later date and can be obtained using the above instructions.

You may freely distribute the uncompressed database files with the retriever or provide them to users of the full PAPYRUS program. The PKUNZIP program is shareware of PKZIP, Inc. of

Deer River, , and is distributed with the diskette under a distribution license from PKZIP,

Inc. If you wish to further distribute the database, please contact PKZIP, Inc. for a copy of the software. You will also note that Research Software Design has also provided a self-extracting program for its retriever for which it also has a distribution license from PKZIP, Inc.

ACKNOWLEDGEMENTS

3 Assistance in compiling the contents of this database was provided through contributions and advice from: W. Cannon, T. Bornhorst, E. Perry, M. Smyk, L. Swanson, M. Lavigne, J. Trammell,

M. Dvorzak, and W. Hinze; they are greatly appreciated and acknowledged. R. Anderson of the

Iowa Department of Natural Resources, Geological Survey Bureau is acknowledged for providing the first World Wide Web (Internet) reference on the Midcontinent Rift System in . While the

World Wide Web address (http://samuel.igsb.uiowa.edu/htmls/ browse/rift/mrs.htm) is not included in the bibliography as a reference, and perhaps should be, as many of its references were added to this bibliography. L. Zanko and R. Patelke are gratefully acknowledged for providing the INSTALL.BAT file. However, responsibility for the contents, omissions, and errors in the database files (.BIB) are the sole responsibility of the author.

4 MIDCONTINENT RIFT SYSTEM BIBLIOGRAPHY

Aaquist, B. E., 1976, An interpretation of the Kingston as a rhyolite tuff in the Portage Lake Lava Series, Keweenaw Peninsula, Michigan [abs.]: 22nd Annual Institute on Geology, St. Paul, MN, v. 22, p. 3. AHMEEK QUADRANGLE; KEWEENAW PENINSULA; KINGSTON CONGLOMERATE; MICHIGAN; PORTAGE LAKE VOLCANICS; RHYOLITE; TUFF; UNITED-STATES; UPPER- PENINSULA; VOLCANIC ROCKS;

Aaquist, B. E., and Hodder, R. W., 1978, Microstyolites-An indicator for an early stage of deposition in a rhyolite tuff, Keweenaw Peninsula, Michigan [abs.]: 24th Annual Institute on Lake Superior Geology, Milwaukee, WI, v. 24, p. 3. DEPOSITION; KEWEENAW PENINSULA; KINGSTON MINE; LITHIFICATION; MICHIGAN; MICHIGAN COPPER DISTRICT; MINERALIZATION; NATIVE COPPER; ORIGIN; PORTAGE LAKE VOLCANICS; RHYOLITE; STYLOLITE; TUFF; UNITED-STATES; UPPER-PENINSULA; VOLCANIC ROCKS;

Abel, C. D., 1985, Petrology and sedimentology of the Jacobsville (northern Michigan) and Bayfield Group (northern Wisconsin) [M.S. Thesis]: University of Wisconsin, Madison, 294 p. AREAL-STUDIES; BAYFIELD-GROUP; CEMENTATION; CLAY-MINERALOGY; DIAGENESIS; ENVIRONMENT; FLUVIAL-ENVIRONMENT; ILLITE; JACOBSVILLE-SANDSTONE; MICHIGAN; SANDSTONE; SEDIMENTARY-ROCKS; SEDIMENTATION; ; STRATIGRAPHY; UNITED-STATES; UPPER-PENINSULA; WISCONSIN;

Abrajano, T. A., Holt, B. D., and Dyrkacz, G. R., 1991, Stable isotope geochemistry of organic matter alteration in Animikie basin sediments within the thermal aureole of the Duluth Complex: Organic Geochemistry, v. 17, p. 477-482. ALTERATION; ANIMIKIE; ANIMIKIE BASIN; CARBON ISOTOPES; CONTACT AUREOLE; CONTACT ; DULUTH COMPLEX; LAYERED INTRUSION; METAMORPHISM; MINNESOTA; ORGANIC GEOCHEMISTRY; STABLE-ISOTOPES; UNITED-STATES;

Abrajano, T. A., Jr., and Holt, B. D., 1989, Alteration of organic matter in Animikie basin sediments within the thermal aureole of the Duluth intrusion [abs.]: Geological Society of America Abstracts with Programs, v. 21, no. 6, p. A11. ANIMIKIE; ANIMIKIE BASIN; CONTACT METAMORPHISM; DULUTH COMPLEX; GEOCHEMISTRY; LOWER-PROTEROZOIC; METAMORPHISM; MINNESOTA; ORGANIC GEOCHEMISTRY; ORGANIC-CARBON; THERMAL AUREOLE; UNITED-STATES; VIRGINIA FORMATION;

Adams, B. B., 1957, Regional gravity and geologic structure in east-central Minnesota [Ph.D. Dissertation]: University of Wisconsin, Madison, 106 p. GEOPHYSICS; GRAVITY; MINNESOTA; REGIONAL; STRUCTURAL-GEOLOGY; UNITED-STATES;

Adams, D. C., 1990, Footwall structure of the Duluth Complex in northeastern Minnesota, a geophysical investigation [M.S. Thesis]: Michigan Technological University, Houghton, 189 p. AEROMAGNETICS; ANIMIKIE; ; ; DULUTH COMPLEX; FAULTS; GEOPHYSICS; GIANTS RANGE BATHOLITH; ; ; GRAVITY; HORSTS; LAYERED INTRUSION; LOWER- PROTEROZOIC; MAGNETOTELLURIC; MAGNETOTELLURIC-SURVEYS; MINNESOTA; MODELLING; MODELS; REACTIVATION; SEDIMENTARY-ROCKS; ST. LOUIS COUNTY; STRUCTURAL-GEOLOGY; UNITED-STATES; VIRGINIA FORMATION;

Adams, D. C., Gridley, J. M., and Keller, G. R., 1991, Analysis of gravity data in the northern Midcontinent Rift region through filtering with Hartley Transforms [abs.]: Eos (American Geophysical Union Transactions), v. 72, no. 44, p. 430. GEOPHYSICS; GRAVITY; MINNESOTA; UNITED- STATES;

Adams, D. C., and Keller, G. R., 1994, Possible extension of the Midcontinent Rift in west Texas and eastern New Mexico: Canadian Journal of Earth Sciences, v. 31, no. 4, p. 709-720. ARIZONA; BOUGUER-ANOMALIES; CALIFORNIA; CENTRAL BASIN PLATFORM; COLORADO; CROSBYTON GEOPHYSICAL ANOMALY; DEBACA-SWISHER TERRANE; FRANKLIN MOUNTAINS; GEOPHYSICS; GRAVITY; IGNEOUS-ROCKS; ILLINOIS; ; ; ; ; MAGMATISM; MAGNETICS; MIDDLE RUN FORMATION; ; NEW MEXICO; ; ; PAJARITO MOUNTAIN; REFLECTION; RIFTING; SCRAMENTO MOUNTAINS; SEISMIC; SEISMIC-SURVEYS; ; TEXAS; ULTRAMAFIC; UNITED-STATES; VAN HORN UPLIFT; WARREN COUNTY;

Adams, D. C., and Young, C. T., 1989, Magnetotelluric investigation of the contact between the Duluth Complex and Animikie Basin in northeastern Minnesota [abs.]: 35th Institute on Lake Superior Geology, Duluth, MN, v. 35, p. 1-2. ANIMIKIE; ANIMIKIE BASIN; DULUTH COMPLEX; FOOTWALL; GEOPHYSICS; MAGNETOTELLURIC; MAGNETOTELLURIC-SURVEYS; MINNESOTA; ST. LOUIS COUNTY; UNITED- STATES;

Adams, F. P., 1900, On the probable occurrence of a large area of nepheline-bearing rocks on the northeast coast of Lake Superior: Journal of Geology, v. 8, p. 322-325. ALKALIC COMPLEX; ALKALINE; ALKALINE INTRUSION; CANADA; COLDWELL COMPLEX; DISTRICT OF ; GEOLOGY; ; PORT COLDWELL; PROTEROZOIC;

Ager, C. M., Milton, N. M., Eiswerth, B. A., Power, M. S., and Hauck, S. A., 1989, Spectral response of vegetation to metallic elements in northeastern Minnesota, in Proceedings of the Seventh Thematic Conference on Remote Sensing for Exploration Geology: Ann Arbor, Environmental Research Institute of Michigan, p. 173-178. AIRBORNE IMAGING SCANNER SURVEY; AIRBORNE SPECTROMETRY; ARCHEAN; BOREAL FOREST; COPPER; DULUTH COMPLEX; ECOLOGY; GEOPHYSICS; GOLD; GREENSTONE BELTS; GROUND SPECTROMETRY; LAYERED INTRUSION; MINERALIZATION; MINNESOTA; ; PGE; PLATINUM-GROUP ELEMENTS; REMOTE SENSING; SPECTRAL REFLECTANCE; ST. LOUIS COUNTY; UNITED-STATES; VEGETATION; VERMILION DISTRICT; VERMILION FAULT;

Aho, G. D., 1969, A reflection seismic investigation of thickness and structure of the (Precambrian or ), Keeweenaw peninsula, Michigan [M.S. Thesis]: Michigan Technological University, Houghton GEOPHYSICAL-SURVEYS; GEOPHYSICS; JACOBSVILLE- SANDSTONE; KEEWEENAW-PENINSULA; MICHIGAN; REFLECTION; SANDSTONE; SEDIMENTARY-ROCKS; SEDIMENTS; SEISMIC- SURVEYS; UNITED-STATES;

Al-Alawi, J. A., 1985, Petrology, sulfide mineralogy and distribution, mass transfer and chemical evolution of the Babbitt Cu-Ni deposit, Duluth Complex, Minnesota [Ph.D. Dissertation]: Indiana University, Bloomington, 350 p. DRILL HOLES; 10030; 10031; 10039; 10040; 10120; 10121;

5 10134; 10135; 10136; 10138; 10139; 10172; 24981; ANIMIKIE; ANIMIKIE GROUP; B1-136; B1-146; B1-156; B1-189; B1-214; B1-221; B1-379; BABBITT; BIOTITE; BORNITE; CHALCOPYRITE; CLINOPYROXENE; CONTACT METAMORPHISM; CONTAMINATION; COPPER; CUBANITE; DDH MDD2; DISSEMINATED ORE; DULUTH COMPLEX; EVOLUTION; GEOCHEMISTRY; HORNFELS; ILMENITE; LAYERED INTRUSION; LOWER-PROTEROZOIC; MAJOR ELEMENT ANALYSES; MASSIVE SULFIDE ORE; METAMORPHISM; MINERAL CHEMISTRY; MINERAL DEPOSIT; MINERALIZATION; MINERALOGY; MINNAMAX; MINNESOTA; MODAL ANALYSES; NICKEL; OLIVINE; ORE DEPOSIT; ORIGIN; PARTRIDGE RIVER INTRUSION; PENTLANDITE; PETROGRAPHY; PETROLOGY; PLAGIOCLASE; PYROXENE; PYRRHOTITE; SEDIMENTARY-ROCKS; SPECIFIC GRAVITY; SPHALERITE; ST. LOUIS COUNTY; SULFIDE; SULFIDES; TROILITE; UNITED-STATES; VEINS; VIRGINIA FORMATION; WHOLE ROCK ANALYSES;

Alapieti, T. T., Dahlberg, E. H., and Nelson, S., 1992, Preliminary results of electron microprobe studies of heavy mineral concentrates of the central region Minnesota and chlorine-bearing minerals of the Duluth Complex, Minnesota: Drill Core Library Newsletter, v. 2, p. 6. Minnesota Department of Natural Resources, Division of Minerals CHLORIDES; CHLORINE; DULUTH COMPLEX; HEAVY MINERALS; LAYERED INTRUSION; MINERAL CHEMISTRY; MINNESOTA; ST. LOUIS COUNTY; UNITED-STATES;

Aldrich, H. R., 1923, Magnetic surveying on the copper-bearing rocks of Wisconsin: Economic Geology, v. 18, p. 562-574. CONGLOMERATE; COPPER; GEOPHYSICS; GROUND MAGNETIC SURVEY; MAGNETIC-SURVEYS; MAGNETICS; SEDIMENTARY-ROCKS; STRUCTURAL- GEOLOGY; VOLCANIC ROCKS; WISCONSIN;

---, 1929, The geology of the Gogebic range of Wisconsin:, Wisconsin Geological and Natural History Survey, Bulletin 71, 279 p. ANDESITE; ; GEOLOGY; GOGEBIC ; INTERFLOW SEDIMENTS; IRON; ; IRON-FORMATION; LOWER- PROTEROZOIC; SEDIMENTARY-ROCKS; SEDIMENTS; UNITED-STATES; VOLCANIC ROCKS; WISCONSIN;

Aldrich, L. T., Davis, G. L., and James, H. L., 1965, Ages of minerals from metamorphic and igneous rocks near Iron Mountain, Michigan: Journal of Petrology, v. 6, p. 445-472. AGE DATING; GEOCHRONOLOGY; IRON MOUNTAIN; MICHIGAN; UNITED-STATES;

Ali, H., and Craddock, C., 1981, Petrochemistry and structure of the Middle Proterozoic Keweenawan volcanic succession, Hurley-to-Minong, Wisconsin [abs.]: 27th Annual Institute on Lake Superior Geology, East Lansing, MI, v. 27, p. 3. CHENGWATANA VOLCANIC GROUP; FAULTS; GEOCHEMISTRY; KEWEENAWAN FAULT; LAKE OWEN FAULT; MELLEN COMPLEX; MINERAL LAKE INTRUSION; PETROCHEMISTRY; POWDER MILL GROUP; STRUCTURAL-GEOLOGY; UNITED-STATES; VOLCANIC ROCKS; WISCONSIN;

Ali, H. M., 1982, Keweenawan volcanic rocks of the Grandview-Minong area, northwestern Wisconsin [Ph.D. Dissertation]: University of Wisconsin, Madison, 376 p. ; BAYFIELD-COUNTY; BURIAL-METAMORPHISM; CORRELATION; FAULTS; FOLDS; GENESIS; GEOCHEMISTRY; GEOPHYSICS; GRANDVIEW; GRAVITY; GRAVITY-ANOMALIES; METABASALT; METAIGNEOUS-ROCKS; METAMORPHIC-ROCKS; METAMORPHISM; MINONG; PALEOMAGNETISM; SEDIMENTARY-ROCKS; SEDIMENTS; STRATIGRAPHY; UNITED-STATES; WASHBURN-COUNTY; WISCONSIN;

Ali, H. M., and Mudrey, M. G., Jr., 1980, Petrochemistry of the Keweenawan Chengwatana volcanic rocks, Wisconsin [abs.]: Eos (American Geophysical Union Transactions), v. 61, no. 48, p. 1196-1197. CHENGWATANA VOLCANIC GROUP; GEOCHEMISTRY; PETROCHEMISTRY; PETROLOGY; UNITED-STATES; VOLCANIC ROCKS; WISCONSIN;

Al-Jassar, T. J., 1985, isotope systematics of the Babbitt Cu-Ni deposit, Duluth Complex, Minnesota [Ph.D. Dissertation]: Indiana University, Bloomington, 131 p. DRILL HOLES; 10030; 10031; 10039; 10040; 10052; 10053; 10060; 10061; 10063; 10065; 10066; 10069; 10111; 10112; 10119; 10120; 10121; 10123; 10134; 10135; 10172; 10195; 10211; 10216; 24981; A DRIFT; B DRIFT; B1-132; B1-142; B1-377; BABBITT; BORNITE; C DRIFT; CHALCOPYRITE; CLOUD ZONE; COPPER; CUBANITE; DISSEMINATED ORE; DRILL HOLE; DULUTH COMPLEX; LAYERED INTRUSION; LOCAL BOY; MASSIVE SULFIDE ORE; MINERAL DEPOSIT; MINERALIZATION; MINNAMAX; MINNESOTA; NICKEL; ORE DEPOSIT; PARTRIDGE RIVER INTRUSION; ; PYRRHOTITE; ST. LOUIS COUNTY; STABLE-ISOTOPES; SULFIDE; SULFIDES; SULFUR ISOTOPES; TIGER BOY; UNITED-STATES;

Allen, D. J., 1990, The Wisconsin gravity minimum: Source and implications [M.S. Thesis]: Purdue University, West Lafayette, Indiana, 183 p. GEOPHYSICS; GRAVITY; GRAVITY-ANOMALIES; ; PHANEROZOIC; UNITED-STATES; WISCONSIN; WISCONSIN ARCH; WOLF RIVER BATHOLITH;

Allen, D. J., and Chandler, V. W., 1992, The utility of high-resolution aeromagnetic data for investigating the Midcontinent Rift in east-central Minnesota [abs.]: 38th Annual Institute on Lake Superior Geology, Hurley, WI, v. 38, p. 3-5. AEROMAGNETIC SURVEY; AEROMAGNETICS; BELLE PLAINE FAULT; COTTAGE GROVE FAULT; DOUGLAS-FAULT; FAULTS; GEOPHYSICS; HASTINGS-FAULT; INTERFLOW SEDIMENTS; IOWA; IOWA HORST; LINEAMENT; MAGNETIC-ANOMALIES; MINNESOTA; MODELLING; SAINT CROIX HORST; SEDIMENTARY-ROCKS; STRUCTURAL-GEOLOGY; UNITED-STATES; VOLCANIC ROCKS; WISCONSIN;

---, 1993, Magnetic properties of the midcontinent rift volcanics at Osseo, Minnesota: Clues to the origin of aeromagnetic anomalies [abs.]: 39th Annual Institute on Lake Superior Geology, Eveleth, MN, v. 39, p. 2-3. AEROMAGNETIC ANOMALY; AEROMAGNETICS; BOREHOLE; CHENGWATANA VOLCANIC GROUP; DENSITY; DRILL HOLE; FAULTS; GEOPHYSICS; MAGNETIC SUSCEPTIBILITY; MINNESOTA; NORMAL POLARITY; NORTHERN NATURAL GAS WELL; REMANENT-MAGNETIZATION; SAINT CROIX HORST; STRUCTURAL- GEOLOGY; UNITED-STATES; VELOCITY; VOLCANIC ROCKS;

Allen, D. J., and Hinze, W. J., 1992, Wisconsin gravity minimum: Solution of a geologic and geophysical puzzle and implications for cratonic evolution: Geology, v. 20, p. 515-518. GEOPHYSICS; GRAVITY; GRAVITY-ANOMALIES; PALEOZOIC; PHANEROZOIC; REFLECTION; SEISMIC; SEISMIC-SURVEYS; UNITED-STATES; UPPER-; WISCONSIN; WISCONSIN ARCH; WOLF RIVER BATHOLITH;

6 Allen, D. J., Hinze, W. J., and Cannon, W. F., 1991, The relationship of topography and gravity over the Lake Superior swell: Evidence for a Keweenawan hot spot? [abs.]: 37th Annual Institute on Lake Superior Geology, Eau Claire, WI, v. 37, pt. 1, p. 4-6. GEOPHYSICS; GRAVITY; ; LAKE SUPERIOR; PLUME; TOPOGRAPHY; UNITED-STATES;

---, 1992, Drainage, topographic, and gravity anomalies in the Lake Superior region: Evidence for a 1100 Ma : Geophysical Research Letters, v. 19, no. 21, p. 2119-2122. CRUST; DEPLETED MANTLE; DRAINAGE; GEOPHYSICS; GRAVITY; LAKE SUPERIOR; MANTLE; MODEL; PLUME; TOPOGRAPHY; UNDERPLATING; UNITED-STATES;

Allen, D. J., Hinze, W. J., Dickas, A. B., and Mudrey, M. G., Jr., 1993, An integrated seismic reflection/three-dimensional gravity investigation of the Midcontinent Rift System, USA [abs.]: AAPG Hedberg Research Conference, Basement and Basins of Eastern , Ann Arbor, MI, November 10-13, 1993. GEOPHYSICS; GRAVITY; REFLECTION; SEISMIC; UNITED-STATES;

Allen, D. J., Hinze, W., Dickas, A. B., and Mudrey, M. G., Jr., 1994, Geophysical investigations of the Midcontinent Rift System: A new model for western Lake Superior and northern Wisconsin [abs.]: 40th Annual Institute on lake Superior Geology, Part 1 - Program and Abstracts, Houghton, MI, v. 40, p. 1-2. ASHLAND-; BAYFIELD-GROUP; DOUGLAS-FAULT; EMERALD BASIN; FOND DU LAC FORMATION; GEOPHYSICS; GRAVITY; HASTINGS-FAULT; HINCKLEY-SANDSTONE; FAULT; LAKE OWEN FAULT; LAKE SUPERIOR; LAKE SUPERIOR SYNCLINE; MINNESOTA; ORONTO-GROUP; PALEOZOIC; PHANEROZOIC; REFLECTION; RIVER FALLS SYNCLINE; SAINT CROIX HORST; SEISMIC; UNITED-STATES; VOLCANIC ROCKS; WHITE'S RIDGE; WISCONSIN;

Allen, R. C., 1917, Mineral resources of Michigan for 1917 and prior years:, Michigan Geological and Biological Survey, Publication 27, COPPER; LOWER PENINSULA; MICHIGAN; MICHIGAN COPPER DISTRICT; MIDDLE-PROTEROZOIC; UNITED-STATES; UPPER-PENINSULA;

Alminas, H. V., Foord, E. E., Cartwright, D. F., and Dahlberg, E. H., 1993, Geochemical studies in the Vermilion District and the Duluth Complex, northeastern Minnesota -- A progress report [abs.]: 39th Annual Institute on Lake Superior Geology, Eveleth, MN, v. 39, p. 4-5. A-HORIZON; AEROMAGNETIC ANOMALY; AEROMAGNETICS; ; ARCHEAN; B-HORIZON; BALD EAGLE INTRUSION; BASE METAL ANALYSES; CENOZOIC; CHLORIDE; CHLORIDES; CHLORINE; COOK COUNTY; COPPER; DULUTH COMPLEX; ELY GREENSTONE; FALL LAKE; GEOCHEMISTRY; GEOPHYSICS; GLACIAL DRIFT; GOLD; GREENSTONE BELTS; JASPER LAKE; LACUSTRINE; LAKE COUNTY; LAKE VERMILION; LAKE VERMILION FORMATION; LAYERED INTRUSION; LINEAMENT; MINERALIZATION; MINNESOTA; OUTWASH; PHANEROZOIC; ; PRECIOUS METAL ANALYSES; SOIL; ST. LOUIS COUNTY; TILL; UNITED-STATES; VERMILION DISTRICT; WABIGOON SUBPROVINCE;

Amstutz, G. C., 1958, The genesis of the Lake Superior copper deposits [abs.]: 4th Annual Institute on Lake Superior Geology, Duluth, MN, v. 4, p. 25. COPPER; EXHALATIVE; GENESIS; HYDROTHERMAL; MAGMATIC; MICHIGAN; MICHIGAN COPPER DISTRICT; MINERAL DEPOSITS; MINERALIZATION; ; ONTONAGON-COUNTY; ORONTO-GROUP; SYNGENETIC; UNITED-STATES; UPPER-PENINSULA; VOLCANIC ROCKS; WHITE PINE REGION;

Anderson, G. E., 1955, The ore minerals of the copper-nickel deposits in the Duluth [abs.]: 1st Annual Institute on Lake Superior Geology, Minneapolis, MN, v. 1, p. 1. CHALCOPYRITE; COPPER; CUBANITE; DULUTH COMPLEX; LAYERED INTRUSION; ; MARCASITE; MINERALIZATION; MINERALOGY; MINNESOTA; NICKEL; ORE DEPOSIT; PENTLANDITE; PYRITE; PYRRHOTITE; SULFIDES; UNITED-STATES; VIOLARITE;

---, 1956, Copper-nickel in the Duluth Complex near Ely, Minnesota, in Schwartz, G. M., ed., Precambrian of northeastern Minnesota:, Geological Society of America, Field Trip No. 1, p. 91-95. COPPER; DULUTH COMPLEX; GUIDEBOOK; LAYERED INTRUSION; MINNESOTA; NICKEL; UNITED-STATES;

---, 1956, Copper-nickel mineralization at the base of the Duluth gabbro [M.S. Thesis]: University of Minnesota, Minneapolis, 74 p. COPPER; DULUTH COMPLEX; LAKE COUNTY; LAYERED INTRUSION; MINERAL DEPOSIT; MINERALIZATION; MINERALOGY; MINNESOTA; NICKEL; ORE DEPOSIT; SOUTH KAWISHIWI INTRUSION; SPRUCE ROAD; SULFIDES; UNITED-STATES;

Anderson, O. L., and Liebermann, R. C., 1966, Sound velocities in rocks and minerals: Vesiac state-of-the art report, Geophysics Laboratory, Willow Run Laboratory, University of Michigan, Ann Arbor. DULUTH COMPLEX; GEOPHYSICS; LAYERED INTRUSION; MELLEN COMPLEX; MINNESOTA; UNITED-STATES; VELOCITY; WISCONSIN;

Anderson, R. R., 1983, In search of Iowa oil: Iowa Geology, v. 8, p. 10-11. CRAWFORD-COUNTY; ECONOMIC GEOLOGY; EXPLORATION; FOREST CITY BASIN; GEOPHYSICAL-SURVEYS; GEOPHYSICS; GRAVITY-ANOMALIES; IOWA; KANSAS CITY GROUP; NONESUCH SHALE; ORONTO-GROUP; PETROLEUM; SEDIMENTARY-ROCKS; SEDIMENTS; SEISMIC-SURVEYS; SURVEYS; UNITED-STATES;

---, 1990, Interpretation of geophysical data over the midcontinent rift system in the area of the M.G. Eischeid # 1 petroleum test, Carroll County, Iowa, in Anderson, R. R., ed., The M.G. Eischeid #1 deep petroleum test, Carroll County, Iowa:, Iowa Department of Natural Resources, Special Report Series, No. 2, p. 27-38. CARROLL COUNTY; DRILL HOLE; GAS; GEOPHYSICS; HYDROCARBONS; IOWA; M.G. EISCHEID NO. 1; OIL; PETROLEUM; UNITED-STATES;

---, 1990, Review of current studies of Proterozoic rocks in the Amoco M.G. Eischeid #1 petroleum test well, Carroll County, Iowa, in Anderson, R. R., ed., The Amoco M.G. Eischeid #1 deep petroleum test, Carroll County, Iowa: Iowa City, Iowa Department of Natural Resources, Geological Survey Bureau, Special Report Series, No. 2, p. 175-183. CARROLL COUNTY; DRILL HOLE; IOWA; M.G. EISCHEID NO. 1; UNITED- STATES;

---, 1990, Review of the Precambrian geological history of the central United States and the Midcontinent Rift System, in Anderson, R. R., ed., The Amoco M.G. Eischeid #1 deep petroleum test, Carroll County, Iowa: Iowa City, Iowa Department of Natural Resources, Geological Survey Bureau,

7 Special Report Series, No. 2, p. 1-25. BASEMENT; CARROLL COUNTY; DRILL HOLE; HISTORY; IOWA; M.G. EISCHEID NO. 1; UNITED-STATES;

---, 1992, The Midcontinent Rift of Iowa [Ph.D. Dissertation]: University of Iowa, Iowa City, 324 p. GEOPHYSICS; IOWA; UNITED-STATES;

---, 1995, Keweenawan Supergroup clastic rocks of the Midcontinent Rift System in Iowa [abs.], in Ojakangas, R. W., Dickas, A. B., and Green, J. C., eds., Basement Tectonics 10: Proceedings of the Tenth International Conference on Basement Tectonics: Netherlands, Kluwer Academic Publishers, v. 4, p. 55-59. ANKENY BASIN; CLASTICS; DEFIANCE BASIN; DUNCAN BASIN; IOWA; IOWA HORST; JEWELL BASIN; LOWER RED CLASTICS GROUP; M.G. EISCHEID NO. 1; MINEOLA BASIN; RED CLASTICS; RIFT BASIN; SEDIMENTARY-ROCKS; SHENANDOAH BASIN; STRATFORD BASIN; STRUCTURAL-GEOLOGY; UNITED-STATES; UPPER RED CLASTICS GROUP; WELLSBURG BASIN;

---, in press, Keweenawan Supergroup clastic rocks in Iowa, in Ojakangas, R. W., Dickas, A. B., and Green, J. C., eds., Late Precambrian and Cambrian rifting, Midcontinent of North America:, Geological Society of America, Special Paper. CLASTICS; IOWA; KEWEENAWAN-SUPERGROUP; RED CLASTICS; SEDIMENTARY-ROCKS; UNITED-STATES;

Anderson, R. R., and Black, R. A., 1982, Geologic interpretation from geophysical models of the midcontinent geophysical anomaly of southwest Iowa, in van Eck, O. J., ed., Regional tectonics and seismicity of southwest Iowa:, Nuclear Regulatory Commission, Annual Report FY-81. GEOLOGY; GEOPHYSICS; IOWA; MODELS; UNITED-STATES;

Anderson, T. D., and Diehl, J. F., 1982, Magnetic investigations of the Baraga County diabase, Baraga County, Michigan [abs.]: 28th Annual Institute on Lake Superior Geology, International Falls, MN, v. 28, p. 3. BARAGA COUNTY; BARAGA DIKES; DIABASE; GEOPHYSICS; MICHIGAN; PALEOMAGNETISM; UNITED-STATES; UPPER-PENINSULA;

Andrews, M. S., 1987, Contact metamorphism of the Virginia Formation at Dunka Road, Minnesota: Chemical modifications and implications for ore genesis in the Duluth Complex [M.S. Thesis]: Indiana University, Bloomington, 93 p. ANIMIKIE; ANIMIKIE GROUP; CONTACT METAMORPHISM; COPPER; DULUTH COMPLEX; DUNKA ROAD; GEOCHEMISTRY; LAYERED INTRUSION; LOWER-PROTEROZOIC; MINERAL DEPOSIT; MINERALIZATION; MINNESOTA; NICKEL; ORE DEPOSIT; ORE GENESIS; PARTRIDGE RIVER INTRUSION; PARTRIDGE RIVER TROCTOLITE SERIES; SEDIMENTARY-ROCKS; ST. LOUIS COUNTY; SULFIDE; SULFIDES; UNITED-STATES; VIRGINIA FORMATION;

Andrews, M. S., and Ripley, E. M., 1989, Mass transfer and sulfur fixation in the contact aureole of the Duluth Complex, Dunka Road Cu-Ni Deposit, Minnesota: The Canadian Mineralogist, v. 27, p. 293-310. CONTACT AUREOLE; CONTACT METAMORPHISM; COPPER; DULUTH COMPLEX; DUNKA ROAD; GEOCHEMISTRY; LAYERED INTRUSION; MINERAL DEPOSIT; MINERALIZATION; MINNESOTA; NICKEL; ORE DEPOSIT; PARTRIDGE RIVER INTRUSION; PARTRIDGE RIVER TROCTOLITE SERIES; ST. LOUIS COUNTY; SULFIDE; SULFIDES; SULFUR; UNITED-STATES;

Annells, R. N., 1970, Volcanic studies on , Ontario (41N), in Report of Activities:, Geological Survey of Canada, Paper 70-1A, p. 115-117. Pt. A, April to October, 1969 CANADA; DISTRICT OF ALGOMA; MICHIPICOTEN ISLAND; ONTARIO; VOLCANIC ROCKS;

---, 1970, Keweenawan volcanic geology of Michipicoten Island, Lake Superior [abs.]: 16th Annual Institute on Lake Superior Geology, Thunder Bay, ONT, p. 7. ; CANADA; DISTRICT OF ALGOMA; FELSITE; GEOLOGY; MAFIC; MICHIPICOTEN ISLAND; ONTARIO; RHYOLITE; VOLCANIC ROCKS;

---, 1971, Middle Keweenawan volcanism of eastern Lake Superior [abs.]: 17th Annual Institute on Lake Superior Geology, Duluth, MN, v. 17, p. 7-8. ALONA BAY; CANADA; CAPE GARGANTUA; DISTRICT OF ALGOMA; FLOOD BASALTS; GEOCHEMISTRY; GEOLOGY; LAKE SUPERIOR; MAFIC; MAMAINSE POINT; MICHIPICOTEN ISLAND; OLIVINE THOLEIITE; ONTARIO; PETROLOGY; RHYOLITES;

---, 1973, Proterozoic flood basalts of eastern Lake Superior: The Keweenawan volcanic rocks of the Mamainse Point area:, Geological Survey of Canada, Paper 72-10, 51 p. ALONA BAY; BASALT; CANADA; DISTRICT OF ALGOMA; FLOOD BASALTS; FREDA-SANDSTONE; INTERFLOW SEDIMENTS; JACOBSVILLE-SANDSTONE; LAKE SUPERIOR; MAMAINSE POINT; MAMAINSE POINT FORMATION; MICA BAY; ONTARIO; ORONTO-GROUP; SANDSTONE; THOLEIITIC BASALT; VOLCANIC ROCKS;

---, 1974, Keweenawan volcanic rocks of Michipicoten Island, Lake Superior, Ontario: An eruptive centre of Proterozoic age:, Geological Survey of Canada, Bulletin 218, 141 p. With Map 1353A, scale 1:50,000 ALTERATION; AMYGDALOIDAL BASALT; ANDESITE; AREAL-GEOLOGY; BASALT; BASE METAL ANALYSES; BORNITE; CANADA; CHALCOCITE; CHANNEL LAKE MEMBER; CLASTICS; COLDWATER LAKE MEMBER; CONGLOMERATE; CONTACT METAMORPHISM; COPPER; COTTON COVE MEMBER; COZENS MEMBER; CUESTA MEMBER; DAVIEAUX ISLAND MEMBER; DEER YARD MEMBER; DISTRICT OF ALGOMA; DOMEYKITE; EAST SAND BAY MEMBER; ECONOMIC GEOLOGY; FAULTS; FELSITE; FOLDS; FREDA-SANDSTONE; GENTHITE; GEOCHEMISTRY; GEOLOGIC; GRANOPHYRE; GRIT; HYDROTHERMAL; JACOBSVILLE-SANDSTONE; LAKE SUPERIOR; LITHOSTRATIGRAPHY; MAMAINSE POINT FORMATION; MAPS; METAMORPHISM; MICHIPICOTEN ISLAND; MICHIPICOTEN ISLAND FORMATION; MINOR ELEMENT ANALYSES; NATIVE COPPER; NATIVE-SILVER; NICCOLITE; OLIVINE THOLEIITE; ONTARIO; ORONTO-GROUP; PETROGRAPHY; PETROLOGY; PHILIPPS CREEK MEMBER; PORPHYRY; QUEBEC HARBOUR MEMBER; QUEBEC MINE MEMBER; REGIONAL METAMORPHISM; RHYOLITE; SANDSTONE; SCHAFER BAY MEMBER; SEDIMENTARY-ROCKS; SEDIMENTS; SOUTH SHORE MEMBER; STRATIGRAPHY; STRUCTURAL-GEOLOGY; TERRIGENOUS; TRACE ELEMENT ANALYSES; VOLCANIC ROCKS; VOLCANICLASTIC; WEST SAND BAY MEMBER; WHOLE ROCK ANALYSES; ZEOLITE-FACIES;

Anonymous, 1963, Pancake Bay, Algoma District, Ontario: Ontario Department of Mines - Geological Survey of Canada, Aeromagnetic Series, Map 2187G, scale 1:63,380. AEROMAGNETIC SURVEY; AEROMAGNETICS; ARCHEAN; BATCHAWANA ; CANADA; DISTRICT OF ALGOMA; GEOPHYSICS; MAP; ONTARIO; PANCAKE BAY; PROTEROZOIC;

8 ---, 1963, Searchmont, Algoma District, Ontario: Ontario Department of Mines - Geological Survey of Canada, Aeromagnetic Series, Map 2201G, scale 1:63,380. AEROMAGNETIC SURVEY; AEROMAGNETICS; CANADA; DISTRICT OF ALGOMA; MAP; ONTARIO; PROTEROZOIC;

---, 1966, Geralton - White River, Ontario: Energy, Mines, and Resources,Surveys and Mapping Branch, Ottawa, Gravity Map, Map No. 26. ALKALIC COMPLEX; ALKALINE; ALKALINE INTRUSION; ARCHEAN; CANADA; COLDWELL COMPLEX; DISTRICT OF THUNDER BAY; GEOPHYSICS; GERALTON; GRAVITY; MAP; ONTARIO; PORT COLDWELL; WHITE RIVER;

---, 1970, Pillow in Lower Keweenawan flows north of Marenisco, in Geological Survey Research, 1970:, U. S. Geological Survey, Paper-750-A, p. A34. BASALT; MICHIGAN; PILLOW BASALT; UNITED-STATES; UPPER-PENINSULA; VOLCANIC ROCKS;

---, 1975, Duluth Gabbro sulphides targeted for future development: Engineering and Mining Journal, v. 176, no. 2, p. 13. COPPER; DULUTH COMPLEX; LAYERED INTRUSION; MINING; MINNESOTA; NICKEL; SULFIDES; UNITED-STATES;

---, 1976, The Minnesota regional copper-nickel study, 1976-1979: Executive Summary, in Regional Copper-Nickel Study:, Minnesota Environmental Quality Board, v. 1, p. 93p. COPPER; DULUTH COMPLEX; ECONOMIC FEASIBILITY; ENVIRONMENTAL; LAKE COUNTY; LAYERED INTRUSION; METALLURGY; MINERAL DEPOSITS; MINING; MINNESOTA; NICKEL; ORE RESERVES; REGIONAL COPPER-NICKEL STUDY; RESOURCES; ST. LOUIS COUNTY; UNITED-STATES;

---, 1977, Organic-rich lake exploration geochemical pilot survey, Cook County, Minnesota: Minnesota Department of Natural Resources, Division of Minerals, Map Set 138. COOK COUNTY; DULUTH COMPLEX; EXPLORATION; GEOCHEMISTRY; LAKE; LAKE SEDIMENT; LAYERED INTRUSION; MAPS; MINNESOTA; SEDIMENT; UNITED-STATES;

---, 1980, Land use and land cover, 1976, Ashland, Wisconsin; Michigan; Minnesota: U.S. Geological Survey Land Use-Land Cover Map L-172. ASHLAND; ASHLAND COUNTY; BAYFIELD-COUNTY; ENVIRONMENTAL GEOLOGY; ENVIRONMENTAL GEOLOGY MAPS; LAND USE MAPS; LAND-COVER; LAND-USE; MAPS; MICHIGAN; MINNESOTA; SEDIMENTARY-ROCKS; SEDIMENTS; UNITED-STATES; WISCONSIN;

---, 1985, Chromium and platinum discovery in NE Minnesota: Skillings Mining Review, v. 74, no. 27, p. 8. CHROMIUM; DULUTH COMPLEX; LAYERED INTRUSION; MINNESOTA; PLATINUM; UNITED-STATES;

---, 1985, Chromium and platinum found in northeastern Minnesota: Mining Engineering, v. 37, p. 1115. CHROMIUM; DULUTH COMPLEX; LAYERED INTRUSION; MINNESOTA; PLATINUM; UNITED-STATES;

---, 1985, Proposed land and resource management plan, Chequamegon National Forest: U. S. Forest Service, Eastern Region, United-States. CHEQUAMEGON NATIONAL FOREST; ENVIRONMENTAL GEOLOGY; LAND-USE; MANAGEMENT; MAPS; SEDIMENTARY-ROCKS; SEDIMENTS; UNITED-STATES; WISCONSIN;

---, 1985, Draft environmental impact statement, land and resource and management plan; Chequamegon National Forest: U. S. Forest Service, Eastern Region, United-States. CHEQUAMEGON NATIONAL FOREST; ENVIRONMENTAL GEOLOGY; IMPACT-STATEMENTS; LAND-USE; MANAGEMENT; MAPS; SEDIMENTARY-ROCKS; SEDIMENTS; UNITED-STATES; WISCONSIN;

---, 1990, hits high grade zones with infill drilling: Northern Miner, v. 76, no. 32, p. 3. COPPER; DRILLING; EXPLORATION; GREAT LAKES; KEWEENAW PENINSULA; MICHIGAN; MICHIGAN COPPER DISTRICT; MINERAL DEPOSIT; MINERALIZATION; UNITED-STATES; UPPER-PENINSULA;

---, 1995, Minnesota ponders copper-nickel deposits: Northern Miner, v. 80, no. 52, p. 5. BABBITT; COPPER; DULUTH COMPLEX; METALLURGY; MINERAL DEPOSITS; MINNAMAX; MINNESOTA; NICKEL; PARTRIDGE RIVER INTRUSION; ST. LOUIS COUNTY; UNITED-STATES;

---, 1995, AMOCO releases info on Michigan drill hole: Skillings Mining Review, v. 84, no. 22, p. 26. ALGER-COUNTY; AU TRAIN FORMATION; CENOZOIC; DRILL HOLE; MICHIGAN; ; PALEOZOIC; PHANEROZOIC; PLEISTOCENE; PORTAGE LAKE VOLCANICS; ; ST. AMOUR NO. 1-29R; UNITED-STATES; UPPER-PENINSULA; VOLCANIC ROCKS;

Antonellini, M. A., and Cambray, F. W., 1992, Relations between intrusions and bedding-parallel extensional shear zones in the Mid-continent Rift System of the Lake Superior region: Tectonophysics, v. 213, no. 3/4, p. 331-349. LAKE SUPERIOR; SHEAR ZONES; SILLS; STRUCTURAL-GEOLOGY;

Anzoleaga, R., 1969, Shallow seismic refraction studies, western Lake Superior [M.S. Thesis]: University of Wisconsin, Madison GEOPHYSICS; LAKE SUPERIOR; REFRACTION; SEISMIC; SEISMIC-SURVEYS; UNITED-STATES;

---, 1971, Crustal structure in western Lake Superior from the integration of seismic and gravity data [Ph.D. Dissertation]: University of Wisconsin, Madison, 53 p. CRUST; GEOPHYSICS; GRAVITY; LAKE SUPERIOR; SEISMIC; SEISMIC-SURVEYS; STRUCTURAL-GEOLOGY;

Anzoleaga, R., Ocola, L. C., and Meyer, R. P., 1969, Shallow structure of western Lake Superior [abs.]: Eos (American Geophysical Union Transactions), v. 50, p. 4. GEOPHYSICS; LAKE SUPERIOR; SEISMIC; SEISMIC-SURVEYS; STRUCTURAL-GEOLOGY;

---, 1969, Shallow seismic refraction profiles in western Lake Superior and their relation to geologic structures [abs.]: 15th Annual Institute on Lake Superior Geology, Oshkosh, WI, v. 15, p. 7. CANADA; GEOPHYSICS; GRAVITY; KNIFE RIVER; MINNESOTA; ONTARIO; OTTER COVE; REFRACTION; SEISMIC; SEISMIC-SURVEYS; THICKNESS; UNITED-STATES; VELOCITY;

9 ---, 1970, Western Lake Superior revisited-Crustal structure from the integration of gravity and seismic data [abs.]: Eos (American Geophysical Union Transactions), v. 51, p. 4. CRUST; GEOPHYSICS; GRAVITY; LAKE SUPERIOR; SEISMIC; SEISMIC-SURVEYS; STRUCTURAL-GEOLOGY;

Arden, D. D., McDermott, D. W., and Sturm, A., 1984, Structural analysis of the White Pine copper mine, Michigan [abs.]: Geological Society of America Abstracts with Programs, v. 16, no. 3, p. 123. COPPER; COPPER HARBOR CONGLOMERATE; COPPER-ORES; ECONOMIC GEOLOGY; FAULTS; GEOPHYSICAL-SURVEYS; GEOPHYSICS; KEWEENAW PENINSULA; LAKE SUPERIOR; MICHIGAN; MICHIGAN COPPER DISTRICT; MINE; NONESUCH SHALE; ONTONAGON-COUNTY; ORONTO-GROUP; SEDIMENTARY-ROCKS; SEDIMENTS; SEISMIC-SURVEYS; STRAIN; STRUCTURAL-ANALYSIS; STRUCTURAL-GEOLOGY; UNITED-STATES; UPPER-PENINSULA; WHITE PINE MINE;

Arehart, G. B., O'Neil, J. R., and Mauk, J. L., 1990, Stable isotope compositions of fluid inclusions in native copper from White Pine, Michigan [abs.]: Geological Society of America Abstracts with Programs, v. 22, p. A250. COPPER; FLUID INCLUSIONS; FLUIDS; HYDROGEN ISOTOPES; HYDROTHERMAL; METEORIC WATER; MICHIGAN; MICHIGAN COPPER DISTRICT; MINERALIZATION; NATIVE COPPER; NONESUCH SHALE; ONTONAGON-COUNTY; ORE DEPOSIT; ORONTO-GROUP; OXYGEN ISOTOPES; STABLE-ISOTOPES; UNITED- STATES; UPPER-PENINSULA; WHITE PINE MINE;

Armbrust, G. A., 1967, Wall rock alteration and paragenesis of the Tribag mine, Batchawana Bay, Ontario [Ph.D. Dissertation]: University of Colorado, Boulder, 327 p. ALTERATION; BATCHAWANA BAY; BRECCIA; BRECCIATION; CANADA; COPPER; DISTRICT OF ALGOMA; GENESIS; MINERALIZATION; MOLYBDENUM; ONTARIO; SULFIDE; SULFIDES; TRIBAG MINE;

---, 1980, Grant 48 geology of the Jogran disseminated Cu-Mo deposit, Ryan Township, Ontario, in: Ontario Geological Survey, Miscellaneous Paper 93, p. 11-15. CANADA; COPPER; JOGRAN PORPHYRY DEPOSIT; MOLYBDENUM; ONTARIO; RYAN TOWNSHIP;

Armburst, G. A., 1966, Geology of township 27, range 12: Ontario Geological Survey, Preliminary, Map P.364, scale 1:15,840. ARCHEAN; BATCHAWANA GREENSTONE BELT; CANADA; DISTRICT OF ALGOMA; FAULTS; GEOLOGY; MAMAINSE POINT FAULT; MAP; ONTARIO; STRUCTURAL-GEOLOGY;

---, 1969, Hydrothermal alteration of a breccia pipe deposit, Tribag mine, Batchewana Bay, Ontario: Economic Geology, v. 64, p. 551-563. ALTERATION; BATCHAWANA BAY; BRECCIA; BRECCIA PIPE; CANADA; COPPER; DISTRICT OF ALGOMA; HYDROTHERMAL; MINERALIZATION; MOLYBDENITE; MOLYBDENUM; ONTARIO; SULFIDE; SULFIDES; TRIBAG MINE;

Ashbrook, P., 1978, Ambient concentrations of mineral fibers in air and water in northeast Minnesota: Minnesota Environmental Quality Board, Regional Copper-Nickel Study. AIR QUALITY; AMPHIBOLE; CONCENTRATION; COPPER; DULUTH COMPLEX; FIBERS; GEOCHEMISTRY; LAYERED INTRUSION; MINERAL DEPOSITS; MINERAL FIBERS; MINNESOTA; NICKEL; REGIONAL COPPER- NICKEL STUDY; UNITED-STATES; WATER QUALITY;

Atkins, J. O., and Peng, S. S., 1974, Compression testing of rock in simulated lunar environment:, U. S. Bureau of Mines, Report of Investigations 7983, 21 p. COMPRESSION; DULUTH COMPLEX; EXPERIMENTAL STUDIES; LAYERED INTRUSION; MINNESOTA; MOON; UNITED- STATES;

Atkinson, W. J., 1989, Diamond exploration philosophy, practise, and promises: A review, in Ross, J., ed., Kimberlites and related rocks: Their mantle/crust setting, diamonds and diamond exploration: Oxford, Blackwell Scientific Publications, Geological Society of Austalia Special Publication No. 14, v. 2, p. 1075-1107. AEROMAGNETIC SURVEY; AEROMAGNETICS; ALLUVIAL DIAMONDS; AUSTRALIA; BIOGEOCHEMISTRY; DIAMONDS; ELECTROMAGNETIC-SURVEYS; EXPLORATION; GARNETS; GEOCHEMISTRY; GEOPHYSICS; GLACIAL DRIFT; GRAVITY; ILMENITE; KIMBERLITES; KIMBERLITIC INDICATOR MINERALS; LAMPROITES; MAGNETICS; MINERAL CHEMISTRY; MINERALOGY; OLIVINE; PHLOGOPITE; PROSPECTING; PYROXENE; RADIOMETRIC SURVEY; REMOTE SENSING; SAMPLING; SOILS; SPINEL; ;

Atwater, G. I., 1935, The Keweenawan-Upper Cambrian relations in the Upper Mississippi Valley, in Kansas Geological Society Guidebook, 9th Annual Field Conference:, Kansas Geological Society, p. 316-319. CAMBRIAN; PALEOZOIC; PHANEROZOIC; SEDIMENTARY-ROCKS; UNITED-STATES; WISCONSIN;

Atwater, G. I., and Clement, G. M., 1933, Pre-Mount Simon age of the Hinckley sandstone [abs.]: Geological Society of America Abstracts with Programs, v. ????, p. 384. HINCKLEY; HINCKLEY-SANDSTONE; HISTORICAL-GEOLOGY; MINNESOTA; SEDIMENTARY-ROCKS; SEDIMENTS; UNITED-STATES;

---, 1935, Precambrian and Cambrian relations in the upper Mississippi valley: Geological Society of America Bulletin, v. 46, p. 1659-1686. BAYFIELD-GROUP; CAMBRIAN; DEVILS ISLAND FORMATION; HINCKLEY-SANDSTONE; JACOBSVILLE-SANDSTONE; MINNESOTA; PALEOZOIC; PHANEROZOIC; SANDSTONE; UNITED-STATES; UPPER MISSISSIPPI VALLEY; WISCONSIN;

Aubut, A. J., 1977, The geology of the southwest margin of the Coldwell Complex [H.B.Sc. Thesis]: Lakehead University, Thunder Bay, Ontario, Canada, 115 p. ALKALIC COMPLEX; ALKALINE; ALKALINE INTRUSION; CANADA; COLDWELL COMPLEX; DISTRICT OF THUNDER BAY; GEOLOGY; ONTARIO; PORT COLDWELL; SUPERIOR PROVINCE;

Austin, G. S., 1961, Photogeology of Cook County, Minnesota [M.S. Thesis]: University of Minnesota, Minneapolis, 64 p. CENOZOIC; COOK COUNTY; DULUTH COMPLEX; GEOMORPHOLOGY; GLACIAL GEOLOGY; LAYERED INTRUSION; MINNESOTA; PHANEROZOIC; PHOTOGEOLOGY; PLEISTOCENE; UNITED-STATES;

---, 1970, Deep stratigraphic test well near Hollandale, Minnesota:, Minnesota Geological Survey, Report of Investigations 12, 52 p. ALBERT LEA COUNTY; BIRKMOSE MEMBER; BLACK EARTH MEMBER; BOREHOLE; CARIMONA MEMBER; CEDAR VALLEY FORMATION;

10 CENOZOIC; ; CUMMINGSVILLE MEMBER; DECORAH SHALE; DEPOSITION; DEPOSITIONAL ENVIRONMENT; ; DRILL HOLE; ; FRANCONIA-FORMATION; GALENA FORMATION; ; GLACIAL DRIFT; GLENWOOD FORMATION; HOLLANDALE; IRON HILL MEMBER; ; JORDAN SANDSTONE; MAQUOKETA FORMATION; MCGREGOR MEMBER; MESOZOIC; MINNESOTA; MT. SIMON SANDSTONE; NATURAL-GAS; ; ORDOVICIAN; PALEOZOIC; PHANEROZOIC; PLATTEVILLE FORMATION; PLEISTOCENE; PRAIRIE DU CHIEN GROUP; PROSSER MEMBER; QUATERNARY; RED CLASTICS; RED-BEDS; SANDSTONE; SEDIMENTATION; SEDIMENTOLOGY; SEDIMENTS; SHAKOPEE FORMATION; SHALE; ST. LAWRENCE FORMATION; ST. PETER SANDSTONE; STEWARTVILLE MEMBER; STORAGE; STRATIGRAPHY; TOMAH MEMBER; UNITED-STATES; WINDROW FORMATION;

Autra, K. B., 1977, A syngenetic model for the origin of the copper mineralization in the Precambrian Nonesuch Shale, White Pine, Michigan [M.S. Thesis]: Michigan State University, East Lansing, 121 p. COPPER; DIAGENESIS; ECONOMIC GEOLOGY; GENESIS; MICHIGAN; MICHIGAN COPPER DISTRICT; MINERAL DEPOSITS; NONESUCH SHALE; ONTONAGON-COUNTY; ORE-DEPOSITS; ORONTO-GROUP; PROCESSES; SEDIMENTARY-ROCKS; SEDIMENTS; SYNGENETIC; UNITED-STATES; UPPER-PENINSULA; WHITE PINE MINE;

Ayer, F. A., 1950, White Pine mine, potential major copper producer: Mining Congress Journal, v. 36, p. 26-30,55. COPPER; MICHIGAN; MICHIGAN COPPER DISTRICT; MINE; NATIVE COPPER; NONESUCH SHALE; ONTONAGON-COUNTY; ORONTO-GROUP; PRODUCTION; UNITED-STATES; UPPER-PENINSULA; WHITE PINE MINE;

Ayres, L. D., 1969, Geology of townships 31 and 30, ranges 20 and 19:, Ontario Department of Mines, Geological Report 69, 100 p. ARCHEAN; BAYFIELD-GROUP; BUSHY BAY FAULT; CANADA; CAPE GARGANTUA; DISTRICT OF ALGOMA; GEOLOGY; JACOBSVILLE- SANDSTONE; METAMORPHISM; MIGMATITE; ONTARIO; SANDSTONE; VOLCANIC ROCKS;

Baars, D. L., Thomas, W. A., Drahovzal, J. A., and Gerhard, L. C., 1995, Preliminary investigations of basement tectonic fabric of the conterminous USA, in Ojakangas, R. W., Dickas, A. B., and Green, J. C., eds., Basement Tectonics 10: Proceedings of the Tenth International Conference on Basement Tectonics: Netherlands, Kluwer Academic Publishers, v. 4, p. 149-158. ARCHEAN; BASEMENT; FAULT-ZONES; FAULTS; SEDIMENTARY-BASINS; STRUCTURAL-GEOLOGY; UNITED-STATES;

Babcock, L. E., 1992, Rift-related sedimentation in southwestern Ohio and northern Kentucky: Influence on Proterozoic to Cambrian paleogeography [abs.]: Geological Society of America Abstracts with Programs, v. 24, no. 7, p. A364. CAMBRIAN; CINCINNATI ARCH; EAST CONTINENT RIFT BASIN; EAU CLAIRE FORMATION; KENTUCKY; KNOX GROUP; MIDDLE RUN FORMATION; MT. SIMON SANDSTONE; OHIO; ORDOVICIAN; PALEOGEOGRAPHY; PALEOZOIC; PHANEROZOIC; RIFT BASIN; RIFTING; ; SEDIMENTATION; THICKNESS; UNITED-STATES;

Babcock, L. L., 1974, Jacobsville Sandstone: A lower-middle Keweenawan red bed sequence [abs.]: 20th Annual Institute on Lake Superior Geology, Sault Ste. Marie, Ontario, v. 20, p. 1. ; CONGLOMERATE; DOVER CREEK; FAULTS; FOLDS; HUNGARIAN FALLS; INTERPRETATION; JACOBSVILLE-SANDSTONE; ; LAURIUM-QUADRANGLE; LITHOSTRATIGRAPHY; MICHIGAN; PALEOECOLOGY; PORTAGE LAKE VOLCANICS; RED-BEDS; SANDSTONE; SEDIMENTARY-ROCKS; SEDIMENTS; SOUTH RANGE LAVA SERIES; STRATIGRAPHY; STRUCTURAL-ANALYSIS; STRUCTURAL-GEOLOGY; UNITED-STATES; UPPER-PENINSULA;

---, 1975, The Jacobsville Sandstone: Evidence for a lower-middle Keweenawan age: 21st Annual Institute on Lake Superior Geology, Marquette, MI, v. 21, Field Trip 3, p. 87-123. AGE; AREAL-GEOLOGY; BARAGA COUNTY; ECONOMIC GEOLOGY; GUIDEBOOK; HOUGHTON- COUNTY; JACOBSVILLE-SANDSTONE; KEWEENAW COUNTY; LITHOSTRATIGRAPHY; MICHIGAN; PETROLOGY; SANDSTONE; SEDIMENTARY-ROCKS; SEDIMENTS; STRATIGRAPHY; UNITED-STATES; UPPER-PRECAMBRIAN;

---, 1976, Contact relationships between the Jacobsville Sandstone and the Portage Lake Lava Group; a progress report [abs.]: 22nd Annual Institute on Lake Superior Geology, St. Paul, MN, v. 22, p. 4-5. ANTICLINE; BOREHOLES; BOUNDARY; CAMBRIAN; CONGLOMERATE; DRILL HOLE; JACOBSVILLE-SANDSTONE; KEWEENAW COUNTY; KEWEENAW PENINSULA; LAURIUM-QUADRANGLE; LITHOSTRATIGRAPHY; LOWER-CAMBRIAN; METAVOLCANICS; MICHIGAN; PALEOZOIC; PHANEROZOIC; PORTAGE LAKE VOLCANICS; SANDSTONE; SCALES CREEK FLOW; SEDIMENTARY-ROCKS; SEDIMENTS; STRATIGRAPHY; STRUCTURAL- GEOLOGY; UNCONFORMITY; UNITED-STATES; UPPER-PENINSULA; UPPER-VOLCANIC ROCKS;

Babcock, R. C., Jr., 1959, Petrology of the granophyre and intermediate rock in the Duluth Gabbro of northern Cook County, Minnesota [M.S. Thesis]: University of Wisconsin, Madison, 47 p. COOK COUNTY; DULUTH COMPLEX; GRANOPHYRE; LAYERED INTRUSION; MINNESOTA; PETROLOGY; UNITED-STATES;

---, 1960, Petrology of the granophyre and intermediate rock in the Duluth gabbro of northern Cook County, Minnesota [abs.]: 6th Annual Institute on Lake Superior Geology, Madison, WI, v. 6, p. 22. COOK COUNTY; DIFFERENTIATION; DULUTH COMPLEX; FRACTIONAL CRYSTALLIZATION; GRANOPHYRE; GRAVITY SETTLING; IGNEOUS-PROCESSES; LAYERED INTRUSION; MINNESOTA; PETROLOGY; STRUCTURAL-GEOLOGY; UNITED-STATES;

Bacon, L. O., 1956, Relationship of gravity to geologic structure in Michigan's Upper Peninsula [abs.]: 2nd Annual Institute on Lake Superior Geology, Houghton, MI, v. 2, p. 6. GEOPHYSICS; GRAVITY; GRAVITY-ANOMALIES; GRAVITY-SURVEYS; KEWEENAW FAULT; MICHIGAN; MICHIGAN COPPER DISTRICT; STRUCTURAL-GEOLOGY; UNITED-STATES; UPPER-PENINSULA;

---, 1957, Relation of gravity to geological structure in Michigan's Upper Peninsula, in Snelgrove, A. K., ed., Geological Exploration: Houghton, MI, Michigan College of Mining and Technology, p. 54-58. GEOPHYSICS; GRAVITY; LOWER PENINSULA; MICHIGAN; STRUCTURAL- GEOLOGY; UNITED-STATES; UPPER-PENINSULA;

---, 1960, Subsurface geologic structure in the Jacobsville-Gay area of the Keweenaw Peninsula as interpreted from geophysical data [abs.]: 6th Annual Institute on Lake Superior Geology, Madison, WI, v. 6, p.8. GEOPHYSICS; JACOBSVILLE-SANDSTONE; KEWEENAW PENINSULA;

11 MAGNETIC SUSCEPTIBILITY; MAGNETIC-ANOMALIES; MAGNETICS; MICHIGAN; STRUCTURAL-GEOLOGY; UNITED-STATES; UPPER-PENINSULA;

---, 1962, Induced polarization logging in the search for native copper in the Osceola footwall zones [abs.]: 8th Annual Institute on Lake Superior Geology, Houghton, MI, v. 8, p. 1. COPPER; GEOPHYSICS; INDUCED POLARIZATION; MICHIGAN; MICHIGAN COPPER DISTRICT; NATIVE COPPER; OSCEOLA MINE; UNITED-STATES; UPPER-PENINSULA;

---, 1964, Investigation of the thickness of the Jacobsville Sandstone by seismic reflection methods--A progress report [abs.]: 10th Annual Institute on Lake Superior Geology, Ishpeming, MI, v. 10, p. 57. FAULTS; GEOPHYSICAL-SURVEYS; GEOPHYSICS; JACOBSVILLE-SANDSTONE; KEWEENAW FAULT; KEWEENAW PENINSULA; MICHIGAN; REFLECTION; SANDSTONE; SEDIMENTARY-ROCKS; SEDIMENTS; SEISMIC; SEISMIC-SURVEYS; STRUCTURAL-GEOLOGY; THICKNESS; UNITED-STATES; UPPER-PENINSULA;

---, 1966, Geologic structure east and south of the Keweenaw fault on the basis of geophysical evidence, in Steinhart, J. S., and Smith, T. J., eds., The Earth Beneath the Continents:, American Geophysical Union, Geophysical Monograph 10, p. 42-55. GEOPHYSICS; KEWEENAW FAULT; STRUCTURAL-GEOLOGY;

---, 1966, Geological structure east and south of the Keweenaw Fault based on geophysical evidence [abs.]: 12th Annual Institute on Lake Superior Geology, Sault Ste. Marie, MI, v. 12, p. 2. FAULTS; GEOPHYSICS; GRAVITY; JACOBSVILLE-SANDSTONE; KEWEENAW FAULT; MAGNETICS; MICHIGAN; MIDDLE RANGE FAULT; STRUCTURAL-GEOLOGY; THICKNESS; UNITED-STATES; UPPER-PENINSULA;

Bacon, L. O., Ingalls, R. W., and Stafford, J. F., 1968, An investigation of the vertical velocity, density and porosity distribution in the Jacobsville sandstone, Houghton County, Michigan [abs.]: 14th Annual Institute on Lake Superior Geology, Superior, WI,v. 14, p. 14. DENSITY; GEOPHYSICS; HOUGHTON-COUNTY; JACOBSVILLE-SANDSTONE; MICHIGAN; POROSITY; SANDSTONE; SEDIMENTARY-ROCKS; SEDIMENTS; UNITED-STATES; UPPER-PENINSULA; VELOCITY;

Bagg, R. M., 1913, The discovery of pyrrhotite in Wisconsin, with a discussion of its probable origin by magmatic differentiation: Economic Geology, v. 8, p. 369-372. DIFFERENTIATION; ; MAGMATIC; MINERALIZATION; ORIGIN; PYRRHOTITE; SULFIDES; UNITED-STATES; WISCONSIN;

Bain, G. W., 1926, Diffusion in Agate Point vitrophyres: American Journal of Science, v. 211, p. 74-88. AGATE POINT RHYOLITE; CANADA; DISTRICT OF THUNDER BAY; GEOCHEMISTRY; MAJOR ELEMENT ANALYSES; ONTARIO; PETROGRAPHY; RHYOLITE; VOLCANIC ROCKS; WHOLE ROCK ANALYSES;

Bakheit, A. K., 1981, Petrography of Cu-Ni mineralization in Mineral Lake area, Ashland County, Wisconsin [M.S. Thesis]: University of Wisconsin, Madison, 104 p. ASHLAND COUNTY; COPPER; MELLEN COMPLEX; MINERAL LAKE INTRUSION; MINNESOTA; NICKEL; ORE DEPOSIT; PETROGRAPHY; UNITED-STATES; WISCONSIN;

Balint, F., 1977, The Neys diatreme, Coldwell Alkaline Complex, northwest Ontario [H.B.Sc. Thesis]: Lakehead University, Thunder Bay, Ontario, Canada, 111 p. ALKALIC COMPLEX; ALKALINE; ALKALINE INTRUSION; CANADA; COLDWELL COMPLEX; DISTRICT OF THUNDER BAY; NEYS DIATREME; ONTARIO; PORT COLDWELL; SUPERIOR PROVINCE;

Balsley, J. R., James, H. L., and Wier, K. L., 1949, Aeromagnetic survey of parts of Baraga, Iron, and Houghton Counties, Michigan, with preliminary geologic interpretation: U. S. Geological Survey, Geophysical Investigation Map, scale 1:1,900,080. AEROMAGNETIC SURVEY; AEROMAGNETICS; BARAGA COUNTY; DIKES; GEOPHYSICS; HOUGHTON-COUNTY; IRON-COUNTY; LOWER-PROTEROZOIC; MICHIGAN; UNITED-STATES; UPPER-PENINSULA;

Baragar, W. R. A., 1978, Michipicoten Island, Ontario, in Wanless, R. K., and Loveridge, W. D., eds., Rubidium-strontium isotopic age studies, Report 2 (Canadian Shield):, Geological Survey of Canada, Paper 77-14, p. 40-43. AGE DATING; CANADA; CANADIAN SHIELD; CHANNEL LAKE MEMBER; FLOOD BASALTS; GEOCHRONOLOGY; MICHIPICOTEN ISLAND; MICHIPICOTEN ISLAND FORMATION; ONTARIO; RUBIDIUM-STRONTIUM;

Barazangi, M., 1967, Geophysical investigation of the Hudson-Afton horst, Dakota County, Minnesota [M.S. Thesis]: University of Minnesota, Minneapolis, 75 p. AEROMAGNETICS; BASALT; COATES FAULT; COTTAGE GROVE FAULT; DAKOTA COUNTY; DRILL HOLE; FAULTS; GEOPHYSICS; GRAVITY; GRAVITY-SURVEYS; HASTINGS-FAULT; HORSTS; HUDSON-AFTON HORST; LAKE OWEN FAULT; MAGNETIC-SURVEYS; MAGNETICS; MINNESOTA; REFRACTION; REVERSE-FAULTS; SAINT CROIX HORST; SEDIMENTARY-ROCKS; SEDIMENTS; SEISMIC; SEISMIC-SURVEYS; STRUCTURAL-GEOLOGY; TWIN CITIES BASIN; UNITED-STATES; VOLCANIC ROCKS;

Barghoorn, E. S., 1967, Paleobiology of a Precambrian shale [abs.]: 13th Annual Institute on Lake Superior Geology, East Lansing, MI, v. 13, p. 5. ALIPHATIC-HYDROCARBONS; AROMATIC HYDROCARBONS; HYDROCARBONS; ISOPRENOID HYDROCARBONS; MICHIGAN; NONESUCH SHALE; ORONTO-GROUP; PALEOBIOLOGY; PHYTANE; PRISTANE; UNITED-STATES; UPPER-PENINSULA; VANADYL PORPHYRIAN;

Barghoorn, E. S., Meinschein, W. G., and Schopf, J. W., 1965, Paleobiology of a Precambrian shale: Science, v. 148, p. 461-472. GEOCHEMISTRY; GEOLOGY; HYDROCARBONS; MICHIGAN; MICROFOSSILS; MICROPALEONTOLOGY; NONESUCH SHALE; OIL; ORGANIC GEOCHEMISTRY; ORONTO-GROUP; PALEONTOLOGY; PORPHYRINS; SEDIMENTARY-ROCKS; SEDIMENTS; SILTSTONE; UNITED-STATES; UPPER-PENINSULA;

---, 1974, Paleobiology of a Precambrian shale, in Kvenvolden, K. A., ed., Geochemistry and the origin of life:, v. 14, p. 282. ALKANES; CHEMICAL-ANALYSIS; COPPER; FREDA-SANDSTONE; GEOCHEMISTRY; HYDROCARBONS; MICHIGAN; MICHIGAN COPPER DISTRICT; NONESUCH SHALE; ONTONAGON-COUNTY; ORGANIC-MATERIALS; ORONTO-GROUP; PALEOBOTANY;

12 PALEONTOLOGY; PHYTANE; PLANTAE; PORPHYRIN; PRISTANE; RELATION; SANDSTONE; SEDIMENTARY-ROCKS; SEDIMENTS; UNITED-STATES; UPPER-PENINSULA; WHITE PINE MINE;

Barnes, S.-J., and Francis, D., 1995, The distribution of platinum-group elements, nickel, copper, and gold in the Muskox Layered Intrusion, Northwest Territories, Canada: Economic Geology, v. 90, no. 1, p. 135-154. AFRICA; ASIA; BABBITT; BUSHVELD COMPLEX; CABRIITE; CANADA; CAPE SMITH BELT; CHALCOPYRITE; CHROMITE; CONTAMINATION; COPPER; COPPERMINE RIVER BASALTS; CUBANITE; DISSEMINATED ORE; DISTRIBUTION; DULUTH COMPLEX; FLOOD BASALTS; GEOCHEMISTRY; GOLD; INSIZWA COMPLEX; LAYERED INTRUSION; LOWER-PROTEROZOIC; MAJOR ELEMENT ANALYSES; MANTLE; MANTLE PLUME; MERENSKY REEF; MESOZOIC; MINERAL CHEMISTRY; MINNAMAX; MINNESOTA; MINOR ELEMENT ANALYSES; MUSKOX INTRUSION; NICKEL; NORIL'SK; NORTHWEST TERRITORIES; ; PARTRIDGE RIVER INTRUSION; PENTLANDITE; PGE; PLATINUM; PLATINUM- GROUP ELEMENTS; PLUME; PYRRHOTITE; RHENIUM; RIFT; RIFTING; ; ; SILVER; SOUTH AFRICA; ST. LOUIS COUNTY; STABLE-ISOTOPES; STRATABOUND; SULFIDE LIQUID; SULFIDES; SULFUR; SULFUR ISOTOPES; TIN; TRACE ELEMENT ANALYSES; ; UNITED-STATES; WHOLE ROCK ANALYSES;

Barton, P. B., Jr., and Skinner, B. J., 1968, Reaction points of possible interest in geothermometry studies of ore deposits [abs.], in: Geological Society of America, Special Paper 101, p. 12. CHALCOGENIDE-SYSTEMS; GEOLOGIC-THERMOMETRY; GEOPHYSICAL-SURVEYS; GEOPHYSICS; HOUGHTON-COUNTY; JACOBSVILLE-SANDSTONE; MICHIGAN; ORE-DEPOSITS; PHYSICAL-PROPERTIES; REACTION- POINTS; SANDSTONE; SEDIMENTARY-PETROLOGY; SEDIMENTARY-ROCKS; SEDIMENTS; UNITED-STATES; WELL-LOGGING;

Basaltic Volcanism Study Project, 1981, Basaltic volcanism on the terrestrial planets: New York, Pergamon Press, Inc., 1286 p. FLOOD BASALTS; GEOCHEMISTRY; MINNESOTA; NORTH SHORE VOLCANIC GROUP; RIFTING; UNITED-STATES; VOLCANIC ROCKS;

Bastin, E. S., 1938, Hydrothermal alteration in the rocks of Pigeon Point, Minnesota: Journal of Geology, v. 46, p. 1058-1072. ALTERATION; HYDROTHERMAL; MINNESOTA; PIGEON POINT; UNITED-STATES;

Bath, C. D., 1960, Magnetization of volcanic rocks in the Lake Superior geosyncline, in: U. S. Geological Survey, Professional Paper 400B, p. 212- 213. GEOPHYSICS; MAGNETICS; MAGNETIZATION; UNITED-STATES; VOLCANIC ROCKS;

Bath, C. D., Schwartz, G. M., and Gilbert, F. P., 1965, Aeromagnetic and geologic map of northeastern Minnesota: U. S. Geological Survey, Geophysical Investigations, Map GP-472. AEROMAGNETIC SURVEY; AEROMAGNETICS; ARCHEAN; DULUTH COMPLEX; GEOLOGY; GEOPHYSICS; GREENSTONE BELTS; LAYERED INTRUSION; MAP; MINNESOTA; UNITED-STATES;

Bath, G. D., 1958, Geophysical studies in northern Minnesota [abs.]: 4th Annual Institute on Lake Superior Geology, Duluth, MN, v. 4, p. 5. AEROMAGNETIC ANOMALY; AEROMAGNETICS; BIWABIK IRON-FORMATION; ; DULUTH COMPLEX; GEOPHYSICS; IRON-FORMATION; LOWER-PROTEROZOIC; ; MINNESOTA; NORTH SHORE VOLCANIC GROUP; REMANENT-MAGNETIZATION; ST. LOUIS COUNTY; UNITED-STATES;

---, 1962, Magnetic anomalies of the Biwabik iron-formation, Mesabi area, Minnesota: Geophysics, v. 27, p. 627-650. BIWABIK IRON- FORMATION; CONTACT METAMORPHISM; DULUTH COMPLEX; GEOPHYSICS; IRON-FORMATION; LAYERED INTRUSION; LOWER- PROTEROZOIC; MAGNETIC-ANOMALIES; MAGNETIC-SURVEYS; MAGNETICS; MESABI RANGE; METAMORPHISM; MINNESOTA; ST. LOUIS COUNTY; UNITED-STATES;

Bath, G. D., Schwartz, G. M., and Gilbert, F. P., 1964, Aeromagnetic and geologic map of east-central Minnesota: U. S. Geological Survey, Geophysical Investigation, Map GP-474. AEROMAGNETICS; GEOPHYSICS; MAP; MINNESOTA; UNITED-STATES;

---, 1965, Aeromagnetic and geologic map of west-central Minnesota: U. S. Geological Survey, Geophysical Investigation, Map GP-473, scale 1:250,000. AEROMAGNETIC SURVEY; AEROMAGNETICS; GEOLOGY; GEOPHYSICS; MAP; MINNESOTA; UNITED-STATES;

---, 1965, Aeromagnetic and geologic map of northeastern Minnesota: U. S. Geological Survey, Geophysical Investigation, Map GP-472. AEROMAGNETICS; ARCHEAN; DULUTH COMPLEX; GEOLOGY; GEOPHYSICS; GREENSTONE BELTS; MAP; MINNESOTA; UNITED- STATES;

Bathe, D. E., 1977, The geology and petrogenesis of the Killala Lake alkalic complex [B.Sc. Thesis]: Carleton University, Ottawa, Ontario, 74 p. ALKALIC COMPLEX; ALKALINE; ALKALINE INTRUSION; CANADA; DISTRICT OF THUNDER BAY; GENESIS; GEOLOGY; KILLALA LAKE ALKALIC COMPLEX; ONTARIO; PETROGENESIS; PETROLOGY; PROTEROZOIC;

Baxter, D. A., and Bornhorst, T. J., 1988, Multiple discrete mafic intrusions of Archean to Keweenawan age, western Upper Peninsula, Michigan [abs.]: 34th Annual Institute on Lake Superior Geology, Marquette, MI, v. 34, p. 6-8. ALTERATION; ARCHEAN; DIABASE; DIKES; GABBRO; INTRUSION; LOWER-PROTEROZOIC; MAFIC; MATACHEWAN DIKES; METAMORPHISM; MICHIGAN; UNITED-STATES; UPPER- PENINSULA; WETMORE LANDING INTRUSIONS;

Bayfield, H. W., 1829, Outlines of the geology of Lake Superior: Literary and Historical Society of Quebec, v. 1, p. 1-43. CANADA; ECONOMIC GEOLOGY; GEOLOGY; LAKE SUPERIOR REGION; ONTARIO; SEDIMENTARY-ROCKS; SEDIMENTS;

Bayley, W. S., 1890, , in: Geological and Natural History Survey of Minnesota, 19th Annual Report, p. 82. CONTACT METAMORPHISM; DULUTH COMPLEX; LAYERED INTRUSION; METAMORPHISM; MINNESOTA; UNITED-STATES;

---, 1893, The eruptive and sedimentary rocks on Pigeon Point, Minnesota and their contact phenomena:, U. S. Geological Survey, Bulletin 109, 121 p. CONTACT METAMORPHISM; COOK COUNTY; METAMORPHISM; MINNESOTA; PIGEON POINT; SEDIMENTARY-ROCKS; UNITED-STATES; VOLCANIC ROCKS;

13 ---, 1893, The basic massive rocks of the Lake Superior region: III. The Great Gabbro Mass of north-eastern Minnesota: Journal of Geology, v. 1, p. 688-716. DULUTH COMPLEX; LAYERED INTRUSION; MAFIC; MINNESOTA; UNITED-STATES;

---, 1895, The basic massive rocks of the Lake Superior region: IV. The peripheral phases of the Great Gabbro Mass in northeastern Minnesota: Journal of Geology, v. 3, p. 1-20. DULUTH COMPLEX; LAKE SUPERIOR; LAYERED INTRUSION; MAFIC; MINNESOTA; UNITED- STATES;

Beaumont, C., Brown, K. C., and Braun, J., 1989, Finite element models of the dynamics of the Midcontinent Rift beneath Lake Superior [abs.]: Eos (American Geophysical Union Transactions), v. 70, no. 15, p. 275. EXTENSION; GEOPHYSICS; GLIMPCE; LAKE SUPERIOR; MODELLING; MODELS; SEISMIC;

Beck, J. W., 1988, Implications for early Proterozoic tectonics and the origin of continental flood basalts, based on combined trace element and neodymium/strontium isotopic studies of mafic igneous rocks of the Penokean Lake Superior belt, Minnesota, Wisconsin and Michigan [Ph.D. Dissertation]: University of Minnesota, Minneapolis, 262 p. AGE DATING; FLOOD BASALTS; GEOCHEMISTRY; GEOCHRONOLOGY; LAKE SUPERIOR; MAFIC; MICHIGAN; MINNESOTA; NEODYMIUM; NEODYMIUM ISOTOPES; ORIGIN; PENOKEAN; SAMARIUM- NEODYMIUM; STRONTIUM; TECTONICS; UNITED-STATES; WISCONSIN;

Beck, M. E., and Lindsley, N. C., 1969, Paleomagnetism of the Beaver Bay complex, Minnesota: Journal of Geophysical Research, v. 74, no. 8, p. 4985-4996. BEAVER BAY COMPLEX; DULUTH COMPLEX; GEOPHYSICS; LAKE COUNTY; LAYERED INTRUSION; MINNESOTA; PALEOMAGNETISM; UNITED-STATES;

Beck, M. E., Jr., 1969, Paleomagnetism and magnetic intensities of Keweenawan intrusive rocks from northeastern Minnesota [Ph.D. Dissertation]: University of California, Riverside, 202 p. GEOPHYSICS; MAGNETIC; MINNESOTA; PALEOMAGNETISM; UNITED-STATES;

---, 1970, Paleomagnetism of Keweenawan intrusive rocks, Minnesota: Journal of Geophysical Research, v. 75, p. 4985-4996. DULUTH COMPLEX; GEOPHYSICS; INTRUSIVE; LAYERED INTRUSION; MINNESOTA; PALEOMAGNETISM; UNITED-STATES;

Beck, M. E., Jr., and Lindsley, N., 1970, Paleomagnetism of the Beaver Bay Complex, Minnesota: Journal of Geophysical Research, v. 74, p. 2002- 2013. BEAVER BAY COMPLEX; DULUTH COMPLEX; GEOPHYSICS; LAKE COUNTY; LAYERED INTRUSION; MINNESOTA; PALEOMAGNETISM; UNITED-STATES;

Behnke, D., 1983, microminerals: The Mineralogical Record, v. 14, no. 4, p. 219-226. COLLECTING; COPPER; COPPER- HARBOR; HOUGHTON-COUNTY; KEWEENAW PENINSULA; MICHIGAN; MICHIGAN COPPER DISTRICT; MINERALOGY; MINERALS; MISCELLANEOUS-MINERALS; NATIVE-ELEMENTS; OCCURRENCE; ONTONAGON-COUNTY; PORTAGE LAKE VOLCANICS; SEDIMENTARY-ROCKS; SEDIMENTS; UNITED-STATES; UPPER-PENINSULA;

Behrendt, J. C., Green, A. G., Cannon, W. F., Hutchinson, D. R., Lee, M. W., Milkereit, B., Agena, W. F., and Spencer, C., 1988, Crustal structure of the Midcontinent rift system: Results from GLIMPCE deep seismic reflection profiles: Geology, v. 16, p. 81-85. CANADA; CRUST; CRUSTAL STRUCTURE; GEOPHYSICS; GLIMPCE; LAKE SUPERIOR; ONTARIO; REFLECTION; SEISMIC; SEISMIC-SURVEYS; STRUCTURAL- GEOLOGY; UNITED-STATES;

Behrendt, J. C., Green, A. G., Lee, M. W., Hutchinson, D. R., Cannon, W. F., Milkereit, B., Agena, W. F., and Spencer, C., 1989, Crustal extension in the Midcontinent Rift System; results from GLIMPCE deep seismic reflection profiles over lakes Superior and Michigan, in Mereu, R. F., Mueller, S., and Fountain, D. M., eds., Properties and processes of Earth's lower crust:, International Union of Geodesy and Geophysics, Geophysical Monograph 51, p. 81-89. CANADA; CRUST; DISTRICT OF ALGOMA; DISTRICT OF THUNDER BAY; EXTENSION; EXTENSIONAL TECTONICS; GEOPHYSICS; GLIMPCE; ; LAKE SUPERIOR; MICHIGAN; MINNESOTA; ONTARIO; REFLECTION; REGIONAL; SEISMIC; SEISMIC-SURVEYS; UNITED-STATES; WISCONSIN;

Behrendt, J. C., Hutchinson, D. R., Lee, M., Thornber, D. R., Tréhu, A., Cannon, W., and Green, A., 1990, GLIMPCE seismic reflection evidence of deep-crustal and upper-mantle intrusion and magmatic underplating associated with the Midcontinent Rift system of North America: Tectonophysics, v. 173, p. 595-615. CANADA; CRUST; GEOPHYSICS; GLIMPCE; LAKE SUPERIOR; MANTLE; ONTARIO; REFLECTION; SEISMIC; SEISMIC-SURVEYS; UNDERPLATING; UNITED-STATES;

Behrendt, J. C., Hutchinson, D. R., Lee, M., Trehu, A. M., Thornber, C. R., Cannon, W. F., and Green, A. G., 1989, Seismic reflection (GLIMPCE) evidence of deep crustal and upper mantle intrusions and magmatic underplating associated with the Midcontinent Rift System of North America [abs.]: Eos (American Geophysical Union Transactions), v. 70, no. 15, p. 272. CANADA; CRUST; GEOPHYSICS; GLIMPCE; GRAVITY; GRAVITY- ANOMALIES; IGNEOUS INTRUSIONS; LAKE SUPERIOR; MAGMATIC; MANTLE; ONTARIO; REFLECTION; SEISMIC; SEISMIC- SURVEYS; UNDERPLATING; UNITED-STATES; VELOCITY;

Bell, J. M., 1974, The petrology of a copper rich conglomerate and its bearing on in situ leaching, Centennial Mine, Houghton County, Michigan [M.S. Thesis]: Michigan Technological University, Houghton, 64 p. CENTENNIAL-MINE; COPPER; HOUGHTON-COUNTY; KEWEENAW PENINSULA; LEACHING; MICHIGAN; MICHIGAN COPPER DISTRICT; MINE; MINING; PETROLOGY; UNITED-STATES; UPPER- PENINSULA;

Bell, K., and Blenkinsop, J., 1980, Grant 42 - Ages and initial 87Sr/86Sr ratios from alkalic complexes of Ontario, in Geoscience Research Grant Program, Summary of Research 1979-1980:, Ontario Geological Survey, Miscellaneous Paper 93, p. 16-23. 87SR/86SR; AGE DATING; ALKALIC COMPLEX; ALKALINE; ALKALINE INTRUSION; CAMBRIAN; CANADA; COLDWELL COMPLEX; DISTRICT OF THUNDER BAY; GEOCHRONOLOGY; HECLA-KILMER ALKALIC COMPLEX; KAPUSKASING STRUCTURAL ZONE; KILLALA LAKE ALKALIC COMPLEX; LACKNER LAKE ALKALIC COMPLEX; LOWER-PROTEROZOIC; NEMEGOSENDA LAKE ALKALIC COMPLEX; ONTARIO;

14 PALEOZOIC; PHANEROZOIC; PORT COLDWELL; RUBIDIUM-STRONTIUM; SHENANGO TOWNSHIP ALKALIC COMPLEX; SPANISH RIVER CARBONATITE COMPLEX;

Bell, K., Blenkinsop, J., Cole, T. J. S., and Menagh, D. P., 1982, Evidence from Sr isotopes for long-lived heterogeneities in the upper mantle: Nature, v. 298, p. 251-253. 87SR/86SR; AGE DATING; ALKALIC COMPLEX; ALKALINE; ALKALINE INTRUSION; BIG BEAVER HOUSE CARBONATITE COMPLEX; BORDEN TOWNSHIP CARBONATITE COMPLEX; CANADA; CARBONATITE; CARGILL TOWNSHIP CARBONATITE COMPLEX; CLAY-HOWELLS ALKALIC COMPLEX; COLDWELL COMPLEX; CONTINENTAL CRUST; DEPLETED MANTLE; DISTRICT OF THUNDER BAY; EVOLUTION; FIRESAND RIVER CARBONATITE COMPLEX; GEOCHRONOLOGY; KAPUSKASING STRUCTURAL ZONE; KILLALA LAKE ALKALIC COMPLEX; LACKNER LAKE ALKALIC COMPLEX; LOWER- PROTEROZOIC; MANTLE; NEMEGOSENDA LAKE ALKALIC COMPLEX; ONTARIO; POOHBAH LAKE COMPLEX; PORT COLDWELL; PRAIRIE LAKE CARBONATITE COMPLEX; REGIONAL; SEABROOK LAKE CARBONATITE COMPLEX; SHENANGO TOWNSHIP ALKALIC COMPLEX; SPANISH RIVER CARBONATITE COMPLEX; STRONTIUM ISOTOPES; SUPERIOR PROVINCE; UPPER MANTLE;

Bell, K., Blenkinsop, J., and Watkinson, D. H., 1979, Rb/Sr geochronology of alkalic complexes, Ontario, in Geoscience research grant program summary research 1978-1979:, Ontario Geological Survey, Miscellaneous Paper 87, p. 69-87. AGE DATING; ALKALIC COMPLEX; ALKALINE; ALKALINE INTRUSION; CANADA; COLDWELL COMPLEX; DISTRICT OF THUNDER BAY; GEOCHRONOLOGY; KAPUSKASING STRUCTURAL ZONE; ONTARIO; PORT COLDWELL; RUBIDIUM-STRONTIUM; SHENANGO TOWNSHIP ALKALIC COMPLEX; STRONTIUM ISOTOPES;

Bell, R., 1870, On the geology and economic minerals on the northeast coast of Lake Superior and adjoining country from Pigeon River to Black Bay, Black Sturgeon River, Nipigon River and :, Geological Survey of Canada, Report of Progress 1866-1869, part IX, BLACK BAY; BLACK STURGEON RIVER; CANADA; DISTRICT OF THUNDER BAY; ECONOMIC GEOLOGY; GEOLOGY; LAKE NIPIGON; NIPIGON RIVER; ONTARIO; PIGEON RIVER; PROTEROZOIC;

Bell, R. T., and Jones, L. D., 1979, Geology of some uranium occurrences in western Canada, in Current Research, Part A:, Geological Survey of Canada, Paper 79-1A, p. 397-400. ALKALIC COMPLEX; ALKALINE INTRUSION; CANADA; GEOLOGY; ONTARIO; RADIOACTIVE; URANIUM;

Belperio, A. P., and Flint, R. B., 1993, The southeastern margin of the Gawler : Australian Journal of Earth Sciences, v. 40, p. 423-426. AEROMAGNETIC SURVEY; AEROMAGNETICS; AUSTRALIA; EYRE PENINSULA; FAULTS; GAWLER CRATON; GEOPHYSICS; GRAVITY; KANGAROO ISLAND; LINCOLN COMPLEX; LOWER-PROTEROZOIC; MODELLING; SEISMIC; SEISMIC-SURVEYS; SOUTH AUSTRALIA; STRUCTURAL-GEOLOGY; TORRENS HINGE ZONE; YORKE PENINSULA;

Belsky, T., Johns, R. B., McCarthy, E. D., Burlingame, A. L., Richter, W., and Calvin, M., 1965, Evidence of life processes in a sediment two and a half billion years old: Nature, v. 206, p. 446-447. ; ARCHEAN; BIOLOGICAL MARKER; CARBON; DEVONIAN; GREENSTONE BELTS; HYDROCARBONS; ISOPRENOIDS; MICHIGAN; MIDLAND COUNTY; MINNESOTA; NONESUCH SHALE; OIL; ORGANIC GEOCHEMISTRY; ORONTO-GROUP; PALEOZOIC; PHANEROZOIC; PHYTANE; PRISTANE; SOUDAN IRON-FORMATION; ST. LOUIS COUNTY; UNITED-STATES; UPPER-PENINSULA; VERMILION DISTRICT;

Beltrame, R. J., 1974, Field mapping in the Duluth Complex: Gabbro Lake quadrangle, northern Minnesota:, Minnesota Geological Survey, Open-file Report, 29 p. DULUTH COMPLEX; GABBRO LAKE; GABBRO LAKE QUADRANGLE; GEOLOGY; LAKE COUNTY; LAYERED INTRUSION; MINNESOTA; UNITED-STATES;

Beltrame, R. J., Chandler, V. W., and Gulbranson, B. L., 1982, Geophysical investigation of the Cedar Mountain Complex, Redwood County, Minnesota:, Minnesota Geological Survey, Report of Investigations 27, 20 p. AEROMAGNETIC SURVEY; AEROMAGNETICS; CEDAR MOUNTAIN COMPLEX; GEOPHYSICS; GRAVITY; GRAVITY-ANOMALIES; GRAVITY-SURVEYS; LINEAMENT; LOWER- PROTEROZOIC; MAGNETIC-ANOMALIES; MAGNETICS; MAPS; MINNESOTA; MINNESOTA RIVER VALLEY; MINNESOTA RIVER VALLEY SUBPROVINCE; MODELLING; REDWOOD COUNTY; TOPOGRAPHY; UNITED-STATES;

Bengtson, M. E., Meyer, R. P., and Halls, H. C., 1983, The structure of the Islands area of Lake Superior [abs.]: 29th Annual Institute on Lake Superior Geology, Houghton, MI, v. 29, p. 4-5. ALKALIC COMPLEX; ALKALINE; ALKALINE INTRUSION; BAYFIELD-SANDSTONE; CANADA; COLDWELL COMPLEX; DISTRICT OF THUNDER BAY; GEOMORPHOLOGY; GEOPHYSICAL-SURVEYS; GEOPHYSICS; IMPACT-FEATURES; INTERPRETATION; JACOBSVILLE-SANDSTONE; LAKE SUPERIOR; ONTARIO; ORONTO-GROUP; PORT COLDWELL; SANDSTONE; SEDIMENTARY-ROCKS; SEDIMENTS; ; SUPERIOR PROVINCE;

Berendsen, P., 1992, Pre-Paleozoic clastic sedimentary rocks in the Midcontinent rift system in Kansas [abs.]: Geological Society of America Abstracts with Programs, v. 24, no. 4, p. 5. CLASTIC-ROCKS; HEAVY MINERALS; KANSAS; MICHIGAN; MINERAL-COMPOSITION; MINNESOTA; RICE-SERIES; RIFT-ZONES; SEDIMENTARY-ROCKS; SEDIMENTS; STRATIGRAPHY; UNITED-STATES; UPPER- WISCONSIN;

---, 1992, Structure and composition of Keweenawan rift-related igneous and sedimentary rocks in Kansas [abs.]: 38th Annual Institute on Lake Superior Geology, Hurley, WI, v. 38, p. 8-10. ABILENE ANTICLINE; ARKOSE; BADDELEYITE; BOREHOLES; DRILL HOLE; FAULT; FINN 1-4; FRIEDERICH 1-8; GABBRO; GEOCHEMISTRY; GEOCHRONOLOGY; GEOPHYSICS; HUMBOLDT FAULT ZONE; IGNEOUS-ROCKS; KANSAS; MARSHALL COUNTY; NOEL POERSCH 1; PALEOMAGNETISM; PETROGRAPHY; REMANENCE; REVERSE-FAULTS; RILEY COUNTY; SEDIMENTARY-ROCKS; STRUCTURAL-GEOLOGY; TEXACO POERSCH NO. 1; UNITED-STATES; WASHINGTON-COUNTY;

15 ---, 1995, History and development of the southern extension of the Midcontinent Rift in Kansas [abs.]: 41st Annual Institute on Lake Superior Geology, Marathon, ONT, v. 41, p. 1-2. BASEMENT; BOLIVAR-MANSFIELD TECTONIC ZONE; CENTRAL PLAINS OROGEN; CHESAPEAKE TECTONIC ZONE; CRETACEOUS; FALL RIVER TECTONIC ZONE; FAULTS; HISTORY; IGNEOUS-ROCKS; KANSAS; KIMBERLITES; MESOZOIC; MISSOURI GRAVITY LOW; NEMAHA TECTONIC ZONE; PALEOZOIC; PEACE CREEK TECTONIC ZONE; ; PHANEROZOIC; RIFTING; SEDIMENTARY-ROCKS; STRUCTURAL-GEOLOGY; UNITED-STATES;

Berendsen, P., and Blair, K. P., 1986, Subsurface structural maps over the central North American rift system (CNARS), central Kansas, with discussion:, Kansas Geological Survey, Subsurface Geology Series 8, 16 p. FAULTS; KANSAS; MAPS; STRUCTURAL-GEOLOGY; UNITED- STATES;

Berendsen, P., Borcherding, R. M., Doveton, J., Gerhard, L., Newell, K. D., Steeples, D., and Watney, W. L., 1988, Texaco Poersch #1; Washington County, Kansas: Preliminary geologic report of the pre-Phanerozoic rocks:, Kansas Geological Survey, Open-file Report 88-22, 116 p. ARKOSE; DRILL HOLE; GEOPHYSICS; KANSAS; NOEL POERSCH 1; SEDIMENTARY-ROCKS; TEXACO POERSCH NO. 1; UNITED-STATES; VOLCANIC ROCKS; WASHINGTON-COUNTY;

Berg, J. H., and Klewin, K. W., 1988, High-MgO lavas from the Keweenawan rift near Mamainse Point, Ontario: Geology, v. 16, p. 1003-1006. CANADA; DISTRICT OF ALGOMA; FLOOD BASALTS; GEOCHEMISTRY; MAMAINSE POINT; ONTARIO; VOLCANIC ROCKS;

Berger, R., Booy, E., and Hamil, B. M., 1973, Environmental geology and land use planning, Chassell quadrangle, Houghton County, Michigan [abs.]: 19th Annual Institute on Lake Superior Geology, Madison, WI, v. 19, p. 3-4. CENOZOIC; CHASSELL QUADRANGLE; COPPER; ENVIRONMENT; ENVIRONMENTAL; ENVIRONMENTAL GEOLOGY; GLACIAL DRIFT; GROUNDWATER; HOUGHTON-COUNTY; JACOBSVILLE-SANDSTONE; LAND-USE; MICHIGAN; MICHIGAN COPPER DISTRICT; MINING; PHANEROZOIC; PLEISTOCENE; PORTAGE LAKE VOLCANICS; QUATERNARY; UNITED-STATES; UPPER-PENINSULA;

Bergstrom, D. J., and Morey, G. B., 1985, Correlation of stratigraphic units of North America (COSUNA) Project - Northern mid-continent region: American Association of Petroleum Geologists. ARCHEAN; CENOZOIC; CRETACEOUS; LOWER-PROTEROZOIC; MESOZOIC; MICHIGAN; MINNESOTA; PALEOGENE; PALEOZOIC; PHANEROZOIC; SOUTH DAKOTA; TERTIARY; UNITED-STATES; UPPER-PENINSULA; UPPER-PROTEROZOIC; WISCONSIN;

Berkey, C. P., 1897, Geology of the St. Croix Dalles: Part 1 - Geology: American Geologist, v. 20, p. 345-383. CENOZOIC; CHISAGO-COUNTY; FRANCONIA SANDSTONE; GEOLOGY; GLACIAL GEOLOGY; MINNESOTA; PALEOZOIC; PHANEROZOIC; PLEISTOCENE; POLK- COUNTY; QUATERNARY; SANDSTONE; SEDIMENTARY-ROCKS; SHALE; ST. CROIX RIVER; ST. LAWRENCE FORMATION; STRATIGRAPHY; TAYLOR'S FALLS; UNITED-STATES; VOLCANIC ROCKS; WISCONSIN;

---, 1898, Geology of the St. Croix Dalles: Part II - Mineralogy: American Geologist, v. 21, no. 3, p. 139-155. ALTERATION; BASE METAL ANALYSES; CHISAGO-COUNTY; COPPER; FRANCONIA SANDSTONE; GEOCHEMISTRY; GEOLOGY; GOLD; MINERALIZATION; MINERALOGY; MINNESOTA; PALEOZOIC; PHANEROZOIC; POLK-COUNTY; PRECIOUS METAL ANALYSES; SANDSTONE; SHALE; ST. LAWRENCE FORMATION; TAYLOR'S FALLS; UNITED-STATES; VOLCANIC ROCKS; WISCONSIN;

Berkson, J. M., and Clay, C. S., 1970, A side-scan sonar study of the morphology of Lake Superior near Freda, Michigan [abs.]: Geological Society of America Abstracts with Programs, v. 2, p. 439-494. FREDA; GEOPHYSICAL-SURVEYS; GEOPHYSICS; LAKE SUPERIOR; LAKES; MICHIGAN; SEDIMENTARY-ROCKS; SEDIMENTS; SIDE SCAN SONAR; STRUCTURAL-GEOLOGY; UNITED-STATES;

---, 1970, Side-scan sonar survey of the Lake Superior floor near Freda, Michigan [abs.]: 16th Annual Institute on Lake Superior Geology, Thunder Bay, ONT, v. 16, p. 9. BEDROCK; FREDA; FREDA-SANDSTONE; GEOPHYSICAL-SURVEYS; GEOPHYSICS; LAKE SUPERIOR; MICHIGAN; ORONTO-GROUP; SEDIMENTARY-ROCKS; SEDIMENTS; SIDE SCAN SONAR; SONAR; UNITED-STATES;

Berry, M. J., and West, G. F., 1966, A time-term interpretation of first arrival data of the 1963 Lake Superior experiment, in Steinhart, J. S., and Smith, T. J., eds., The Earth Beneath the Continents:, American Geophysical Union, Gephysical Monograph 10, p. 166-180. A volume of geophysical studies in honor of Merle A. Tuve GEOPHYSICS; LAKE SUPERIOR; SEISMIC;

---, 1966, An interpretation of the first arrival data of the Lake Superior experiment by the time-term method: Bulletin of the Seismological Society of America, v. 56, p. 141-171. GEOPHYSICS; LAKE SUPERIOR; SEISMIC; SEISMIC-SURVEYS; UNITED-STATES;

Bickford, M. E., Harrower, K. L., Hoppe, W. J., Nelson, B., Nusbaum, R. L., and Thomas, J. J., 1981, Rb-Sr and U-Pb geochronology and distribution of rock types in the Precambrian basement of Missouri and Kansas: Geological Society of America Bulletin, v. 92, p. 323-341. AGE DATING; BASEMENT; GEOCHEMISTRY; GEOCHRONOLOGY; GRANITE; GRANITE-RHYOLITE TERRAINS; IGNEOUS-ROCKS; KANSAS; LOWER-PROTEROZOIC; MAJOR ELEMENT ANALYSES; METAMORPHISM; MISSOURI; RUBIDIUM-STRONTIUM; SEDIMENTARY- ROCKS; ST. FRANCOIS MOUNTAINS; UNITED-STATES; URANIUM-LEAD; WHOLE ROCK ANALYSES; ;

Bickford, M. E., Harrower, K. L., Hoppe, W. J., Nelson, B. K., Nusbaum, R. L., and Thomas, J. J., 1981, Supplementary data for: Rb-Sr and U-Pb geochronology and distribution of rock types in the Precambrian basement of Missouri and Kansas: Geological Society of America Bulletin, v. 92, pt. 2, p. 963-996. AGE DATING; BASEMENT; GEOCHEMISTRY; GEOCHRONOLOGY; KANSAS; LOWER-PROTEROZOIC; MISSOURI; RUBIDIUM-STRONTIUM; UNITED-STATES; URANIUM-LEAD;

Bickford, M. E., Van Schmus, W. R., and Zietz, I., 1986, Proterozoic history of the midcontinent region of North America: Geology, v. 14, no. 6, p. 492-496. AEROMAGNETICS; AGE; ARCHEAN; CANADA; COLORADO; CRATON; GEOPHYSICS; GRANITE-RHYOLITE TERRAINS; GRENVILLE PROVINCE; HISTORY; ILLINOIS; INDIANA; IOWA; KANSAS; KENTUCKY; LLANO PROVINCE; LOWER-PROTEROZOIC; MICHIGAN; MINNESOTA; MISSOURI; NEBRASKA; NEW MEXICO; NORTH DAKOTA; OKLAHOMA; ONTARIO; PENOKEAN OROGEN;

16 SOUTH DAKOTA; ; TENNESSEE; TEXAS; TRANS-HUDSON OROGEN; UNITED-STATES; UPPER-PENINSULA; WISCONSIN;

Biczok, J., 1976, The petrography and geochemistry of the Chipman Lake alkaline-carbonatite complex [B.Sc. Thesis]: Lakehead University, Thunder Bay, Ontario, Canada, 128 p. ALKALINE; CANADA; CARBONATITE; CHIPMAN LAKE; DISTRICT OF COCHRANE; DISTRICT OF THUNDER BAY; GEOCHEMISTRY; ONTARIO; PETROLOGY; PROTEROZOIC;

Bigsby, J. J., 1825, Notes on the geography and geology of Lake Superior: Royal Institution of Great Britain, Quarterly Journal, v. 18, p. 1-35,228- 267. CANADA; GEOGRAPHY; GEOLOGY; LAKE SUPERIOR; STRATIGRAPHY; UNITED-STATES;

Billings, M. D., 1974, Survey of the geology and geomorphology of Neys Provincial Park and adjacent areas, District of Thunder Bay, Ontario:, Ministry of Natural Resources, Neys Provincial Park, Earth Science Report, Environmental Planning Series, ALKALIC COMPLEX; ALKALINE; ALKALINE INTRUSION; CANADA; COLDWELL COMPLEX; DISTRICT OF THUNDER BAY; NEYS DIATREME; NEYS PROVINCIAL PARK; ONTARIO; PORT COLDWELL; PROTEROZOIC;

Birch, F., 1954, Thermal conductivity, climatic variation, and heat flow near Calumet, Michigan: American Journal of Science, v. 252, p. 1-25. CLIMATE; FREDA-SANDSTONE; GEOPHYSICS; HEAT-FLOW; JACOBSVILLE-SANDSTONE; MICHIGAN; ORONTO-GROUP; SANDSTONE; THERMAL-CONDUCTIVITY; UNITED-STATES; UPPER-PENINSULA;

Black, W. A., 1955, Study of the marked positive gravity anomaly in the northern Midcontinent region of the United States [abs.]: Geological Society of America Bulletin, v. 66, p. 1531. BOUGUER-ANOMALIES; GEOPHYSICAL-PROFILES; GEOPHYSICS; GRAVITY; GRAVITY- ANOMALIES; IOWA; KANSAS; MINNESOTA; NEBRASKA; UNITED-STATES; WISCONSIN;

Blackadar, R. G., 1956, Differentiation and assimilation in the Logan sills, Lake Superior district, Ontario: American Journal of Science, v. 254, p. 623-645. ANIMIKIE; ASSIMILATION; CANADA; DIABASE; DIFFERENTIATION; DISTRICT OF THUNDER BAY; DULUTH COMPLEX; LAKE SUPERIOR; LAYERED INTRUSION; LOGAN SILLS; LOWER-PROTEROZOIC; MINNESOTA; ONTARIO; ; UNITED-STATES;

Blakely, R. J., 1984, Map showing aeromagnetic data over the Stillwater Complex and vicinity, Montana: U. S. Geological Survey, Open-File Report, Map 84-799, scale 1:24,000. AEROMAGNETIC SURVEY; AEROMAGNETICS; ARCHEAN; BEARTOOTH MOUNTAINS; GEOPHYSICS; LAYERED INTRUSION; MAP; MONTANA; STILLWATER COMPLEX; UNITED-STATES;

Blecha, M., 1965, Geology of the Tribag mine: Canadian Institute of Mining and Metallurgy, Transactions, v. 68, p. 321-326. BRECCIA; BRECCIA PIPE; CANADA; COPPER; DISTRICT OF ALGOMA; MINERALIZATION; MOLYBDENUM; ONTARIO; ORE DEPOSIT; SULFIDE; SULFIDES; TRIBAG MINE;

---, 1969, The origin of the Breton breccia, Batchawana Bay, Ontario [Ph.D. Dissertation]: McGill University, Montreal, Quebec, Canada BATCHAWANA BAY; BRECCIA; BRECCIATION; BRETON; CANADA; COPPER; MINERALIZATION; ONTARIO; ORE DEPOSIT; ORIGIN; PROTEROZOIC;

---, 1974, Batchawana area - A possible porphyry copper district: CIM Bulletin, v. 67, p. 71-76. BATCHAWANA BAY; CANADA; COPPER; ONTARIO; ORE DEPOSIT; PROTEROZOIC;

---, 1974, Batchawana area - a possible Precambrian porphyry copper district: Canadian Institute of Mining and Metallurgy, Transactions, v. 77, p. 393-398. CANADA; COPPER; COPPER PORPHYRY; DISTRICT OF ALGOMA; MINERALIZATION; ONTARIO; PROTEROZOIC;

Blenkinsop, J., and Bell, K., 1983, Rb-Sr geochronology of the Coldwell Complex, northwestern Ontario, Canada: Discussion: Canadian Journal of Earth Sciences, v. 20, p. 1499-1500. AGE DATING; ALKALIC COMPLEX; ALKALINE; ALKALINE INTRUSION; CANADA; COLDWELL COMPLEX; DISTRICT OF THUNDER BAY; GEOCHRONOLOGY; ONTARIO; PORT COLDWELL; RUBIDIUM-STRONTIUM; SUPERIOR PROVINCE;

Blue, A., 1893, Copper at Point Mamainse, in: Ontario Department of Mines, Report, v. 3, p. 62-68. CANADA; COPPER; DISTRICT OF ALGOMA; MAMAINSE POINT; MINERALIZATION; ONTARIO; ORE DEPOSIT; PROTEROZOIC;

Bodwell, W. A., 1971, Geologic compilation and non-ferrous minerals potential, Precambrian section, northern Michigan [M.S. Thesis]: Michigan Technological University, Houghton ARCHEAN; EXPLORATION; GEOLOGY; MICHIGAN; PROSPECTING; UNITED-STATES; UPPER- PENINSULA;

---, 1972, Precambrian geology of Upper Peninsula, Michigan - Showing non-ferrous metal deposits: Michigan Technological University, Geological Map Series, Map 2. COPPER; MAP; MICHIGAN; MICHIGAN COPPER DISTRICT; UNITED-STATES; UPPER-PENINSULA;

---, 1972, Geologic compilation and nonferrous metals potential Precambrian section, northern Michigan [abs.]: 18th Annual Institute on Lake Superior Geology, Houghton, MI, v. 18, Paper 2, 1 p. BASE METALS; COPPER; DRILLING; EXPLORATION; ; GEOLOGY; GOLD; MICHIGAN; MICHIGAN COPPER DISTRICT; MINERAL POTENTIAL; MINERALIZATION; NON-FERROUS MINERALS; PORPHYRY; PORTAGE LAKE VOLCANICS; PRECIOUS METALS; UNITED-STATES; UPPER-PENINSULA;

Boerboom, T. J., 1994, Archean crustal xenoliths in a Keweenawan hypabyssal sill, northeastern Minnesota. White was right! [abs.]: 40th Annual Institute on Lake Superior Geology, Part 1 - Program and Abstracts, Houghton, MI, v. 40, p. 5-6. ARCHEAN; BAYFIELD-PENINSULA; BEAVER BAY COMPLEX; BEAVER RIVER DIABASE; COOK COUNTY; DIKES; DULUTH COMPLEX; GEOPHYSICS; GRAVITY; HYPABYSSAL;

17 ISLE ROYALE; LAKE COUNTY; LAYERED INTRUSION; MINNESOTA; NORTH SHORE VOLCANIC GROUP; SHOEPACK LAKE INCLUSION-RICH DIORITE; SILLS; UNITED-STATES; VOLCANIC ROCKS; WISCONSIN; XENOLITHS;

Boerboom, T. J., and Miller, J. D., Jr., 1994, Geologic map of the Silver Island Lake, Wilson lake, and western Toohey Lake quadrangles, Cook and Lake Counties, Minnesota: Minnesota Geological Survey, Miscellaneous Map Series, Map M-81, scale 1:24,000. BEAVER BAY COMPLEX; COOK COUNTY; DULUTH COMPLEX; LAKE COUNTY; LAYERED INTRUSION; MAP; MINNESOTA; SILVER LAKE QUADRANGLE; TOOHEY LAKE QUADRANGLE; UNITED-STATES; WILSON LAKE QUADRANGLE;

Bona, L. J., and Kiesel, D. S., 1990, Geomorphology and Holocene geologic history of Long Island, Apostle Islands National Lakeshore, Wisconsin [abs.]: Geological Society of America Abstracts with Programs, v. 22, no. 5, p. 4. APOSTLE-ISLANDS; ASHLAND COUNTY; BAYFIELD- COUNTY; CENOZOIC; CHEQUAMEGON-BAY; CHEQUAMEGON-POINT; GEOMORPHOLOGY; HOLOCENE; LONG ISLAND; NORTHWESTERN-WISCONSIN; PHANEROZOIC; QUATERNARY; SEDIMENTARY-ROCKS; SEDIMENTS; SHORE-FEATURES; SPITS; UNITED-STATES; WISCONSIN;

Bonnichsen, B., 1965, Structure and lithology of the metamorphosed Biwabik Iron-formation, Dunka River area, eastern Mesabi district, Minnesota [abs.]: 11th Annual Institute on Lake Superior Geology, St. Paul, MN, v. 11, p. 8-9. BIWABIK IRON-FORMATION; CONTACT METAMORPHISM; DIABASE; DULUTH COMPLEX; DUNKA RIVER; FAULTS; IRON-FORMATION; LITHOLOGY; LOWER- PROTEROZOIC; MESABI DISTRICT; MESABI IRON RANGE; MESABI RANGE; METAMORPHISM; MINNESOTA; SILLS; ST. LOUIS COUNTY; STRUCTURAL-GEOLOGY; UNITED-STATES;

---, 1968, General geology and petrology of the metamorphosed Biwabik Iron Formation - Dunka River area, Minnesota [Ph.D. Dissertation]: University of Minnesota, Minneapolis, 240 p. BIWABIK IRON-FORMATION; CONTACT METAMORPHISM; DULUTH COMPLEX; DUNKA RIVER; GEOLOGY; IRON-FORMATION; LAYERED INTRUSION; LOWER-PROTEROZOIC; MINNESOTA; PETROLOGY; ST. LOUIS COUNTY; UNITED-STATES;

---, 1968, Metamorphism of the Biwabik Iron Formation, Dunka River area, Minnesota [abs.]: 14th Annual Institute on Lake Superior Geology, Superior, WI,v. 14, p. 26-27. ANIMIKIE; BIWABIK IRON-FORMATION; CONTACT METAMORPHISM; DULUTH COMPLEX; DUNKA RIVER; IRON-FORMATION; LAYERED INTRUSION; LOWER-PROTEROZOIC; MESABI IRON RANGE; MESABI RANGE; METAMORPHISM; MINNESOTA; UNITED-STATES; VIRGINIA FORMATION;

---, 1968, Geology of metamorphosed Biwabik Iron-formation, Dunka River area, Minnesota: Proceedings, 29th Annual Mining Symposium, and 41st Annual American Institute of Mining and Metallurgical Engineers, Minnesota Section: Minneapolis, University of Minnesota, p. 53-58. ANIMIKIE; BIWABIK IRON-FORMATION; CONTACT AUREOLE; CONTACT METAMORPHISM; DULUTH COMPLEX; DUNKA RIVER; IRON-FORMATION; LAYERED INTRUSION; LOWER-PROTEROZOIC; METAMORPHISM; MINNESOTA; UNITED-STATES;

---, 1969, Geology of the southern part of the Duluth Complex, Minnesota: 30th Annual Mining Symposium and AIME Meeting, Duluth, MN, p. 89-93. DULUTH COMPLEX; GEOLOGY; LAYERED INTRUSION; MINNESOTA; ST. LOUIS COUNTY; UNITED-STATES;

---, 1969, Metamorphic pyroxenes and amphiboles in the Biwabik Iron Formation, Dunka River area, Minnesota, in Pyroxenes and amphiboles: Crystal chemistry and phase petrology:, Mineralogical Society of America, Special Paper 2, p. 217-239. AMPHIBOLE; ANIMIKIE; BIWABIK IRON- FORMATION; CONTACT METAMORPHISM; CUMMINGTONITE; CYPRUS NORTHSHORE MINING COMPANY; DULUTH COMPLEX; DUNKA RIVER; EQUILIBRIUM; ERIE MINING COMPANY; FAYALITE; FERROHYPERSTHENE; HORNBLENDE; IRON-FORMATION; LAKE COUNTY; LAYERED INTRUSION; LOWER-PROTEROZOIC; MAGNETITE; METAMORPHISM; MINERAL CHEMISTRY; MINNESOTA; ORTHOPYROXENE; PYROXENE; PYROXENE HORNFELS; QUARTZ; RESERVE MINING COMPANY; UNITED-STATES;

---, 1969, Geologic investigations in the southern part of the Duluth Complex, in Summary of fieldwork 1969:, Minnesota Geological Survey, Information Circular 7, p. 19-20. DULUTH COMPLEX; GEOLOGY; LAYERED INTRUSION; MINNESOTA; ST. LOUIS COUNTY; UNITED- STATES;

---, 1970, Geologic investigations in southern part of Duluth Complex, in Summary of fieldwork, 1970:, Minnesota Geological Survey, Information Circular 8, p. 18-19. DULUTH COMPLEX; GEOLOGY; LAYERED INTRUSION; MINNESOTA; ST. LOUIS COUNTY; UNITED-STATES;

---, 1970, Principal rock types in the southern part of the Duluth Complex, Minnesota [abs.]: Geological Society of America Abstracts with Programs, v. 2, p. 498-499. DULUTH COMPLEX; LAYERED INTRUSION; MINNESOTA; ST. LOUIS COUNTY; TROCTOLITE; TROCTOLITIC SERIES; UNITED-STATES;

---, 1970, The southern part of the Duluth Complex and associated Keweenawan rocks, Minnesota [abs.]: 16th Annual Institute on Lake Superior Geology, Thunder Bay, ONT, v. 16, p. 10-11. ANIMIKIE; ANORTHOSITIC SERIES; DULUTH COMPLEX; FERROGABBRO; FOOTWALL; GEOLOGY; GRANOPHYRE; GREENWOOD LAKE; HORNFELS; INCLUSIONS; LAYERED INTRUSION; LOWER-PROTEROZOIC; MAFIC; METABASALT; MINNESOTA; MT. WEBER; OUIS; OXIDE-BEARING ULTRAMAFIC INTRUSION; PARTRIDGE RIVER INTRUSION; PERIDOTITE; ST. LOUIS COUNTY; TROCTOLITIC SERIES; UNITED-STATES; VIRGINIA FORMATION; VOLCANIC ROCKS;

---, 1971, Hornfelses in the southern part of the Duluth Complex, Minnesota [abs.]: 17th Annual Institute on Lake Superior Geology, Duluth, MN, v. 17, p. 11-12. ANIMIKIE; ANIMIKIE GROUP; CONTACT METAMORPHISM; DULUTH COMPLEX; GEOCHEMISTRY; GRAPHITE; HORNFELS; IRON-FORMATION; LAYERED INTRUSION; LOWER-PROTEROZOIC; METAMORPHISM; MINNESOTA; NORTH SHORE VOLCANIC GROUP; SEDIMENTARY-ROCKS; SULFIDES; UNITED-STATES; VIRGINIA FORMATION; VOLCANIC ROCKS;

---, 1971, Outcrop map of southern part of Duluth Complex and associated Keweenawan rocks, St. Louis and Lake Counties, Minnesota: Minnesota Geological Survey, Miscellaneous Map Series, Map M-11, scale 1:125,000. DULUTH COMPLEX; GEOLOGY; LAKE COUNTY; LAYERED INTRUSION; MAP; MINNESOTA; ST. LOUIS COUNTY; UNITED-STATES;

18 ---, 1972, Southern part of the Duluth Complex, in Sims, P. K., and Morey, G. B., eds., Geology of Minnesota: A Centennial Volume: St. Paul, Minnesota Geological Survey, p. 361-387. DULUTH COMPLEX; GEOLOGY; LAYERED INTRUSION; MINNESOTA; UNITED-STATES;

---, 1972, Sulfide minerals in the Duluth Complex, in Sims, P. K., and Morey, G. B., eds., Geology of Minnesota: A Centennial Volume: St. Paul, Minnesota Geological Survey, p. 388-393. COPPER; DULUTH COMPLEX; LAYERED INTRUSION; MINERALIZATION; MINERALOGY; MINNESOTA; NICKEL; ORE DEPOSIT; SULFIDES; UNITED-STATES;

---, 1972, The Duluth Complex [abs.]: Geological Society of America Abstracts with Programs, v. 4, no. 7, p. 453-454. DULUTH COMPLEX; LAYERED INTRUSION; MINNESOTA; UNITED-STATES;

---, 1974, Copper and nickel resources in the Duluth Complex, northeastern Minnesota:, Minnesota Geological Survey, Information Circular 10, 24 p. COPPER; DULUTH COMPLEX; LAYERED INTRUSION; MINERALIZATION; MINNESOTA; NICKEL; ORE DEPOSIT; SULFIDES; UNITED-STATES;

---, 1974, Copper and nickel resources in the Duluth Complex, Minnesota [abs.]: Economic Geology, v. 69, p. 1177. COPPER; DULUTH COMPLEX; LAKE COUNTY; LAYERED INTRUSION; MINERAL DEPOSITS; MINERALIZATION; MINNESOTA; NICKEL; ST. LOUIS COUNTY; SULFIDES; UNITED-STATES;

---, 1974, Geology of the Ely-Hoyt Lakes district, northwestern Minnesota:, Minnesota Geological Survey, Open-File Report, 20 p. DULUTH COMPLEX; ELY; GEOLOGY; HOYT LAKES; LAYERED INTRUSION; MINNESOTA; ST. LOUIS COUNTY; UNITED-STATES;

---, 1974, Copper and nickel resources in the Duluth Complex, Minnesota [abs.]: Geological Society of America Abstracts with Programs, v. 6, p. 661-662. COPPER; DULUTH COMPLEX; LAYERED INTRUSION; MINERAL-RESOURCES; MINNESOTA; NICKEL; SULFIDES; UNITED- STATES;

---, 1975, Geology of the Biwabik Iron-Formation, Dunka River area, Minnesota: Economic Geology, v. 70, p. 319-340. ANIMIKIE; ANIMIKIE BASIN; ANIMIKIE GROUP; ARCHEAN; BIWABIK IRON-FORMATION; CONTACT METAMORPHISM; DULUTH COMPLEX; DUNKA RIVER; ERIE MINING COMPANY; GIANTS RANGE; GRANITE; IRON-FORMATION; ISAAC LAKE QUADRANGLE; LAYERED INTRUSION; LOWER CHERTY; LOWER SLATY; LOWER-PROTEROZOIC; MESABI RANGE; METAMORPHISM; MINERALOGY; MINNESOTA; RESERVE MINING COMPANY; SEDIMENTARY-ROCKS; ST. LOUIS COUNTY; STRATIGRAPHY; UNITED-STATES; UPPER CHERTY; UPPER SLATY; VIRGINIA FORMATION;

Bonnichsen, B., and Botto, R. I., 1976, The behavior of precious metals and other trace elements during the fractional crystallization of Duluth Complex sulfides [abs.]: 22nd Annual Institute on Lake Superior Geology, St. Paul, MN, v. 22, p. 10. BORNITE; CHALCOCITE; CHALCOPYRITE; COPPER; CRYSTALLIZATION; CUBANITE; DISSEMINATED ORE; DULUTH COMPLEX; FRACTIONAL CRYSTALLIZATION; GEOCHEMISTRY; GOLD; LAYERED INTRUSION; MINERALIZATION; MINERALOGY; MINNESOTA; MONOSULFIDE SOLID-SOLUTION; NICKEL; ORIGIN; PENTLANDITE; PGE; PLATINUM-GROUP ELEMENTS; PRECIOUS METALS; PYRRHOTITE; SULFIDES; TRACE ELEMENTS ANALYSES; UNITED-STATES;

Bonnichsen, B., Delano, J. W., and Forbes, W. C., 1972, Late-stage titaniferous peridotite from Duluth Complex similar to Apollo 11 basalts in bulk composition [abs.]: Eos (American Geophysical Union Transactions), v. 53, p. 535. DULUTH COMPLEX; GEOCHEMISTRY; LAYERED INTRUSION; LUNAR BASALT; MINNESOTA; OUIS; OXIDE-BEARING ULTRAMAFIC INTRUSION; PERIDOTITE; TI; TITANIUM; ULTRAMAFIC; UNITED-STATES;

Bonnichsen, B., Fukui, L. M., and Chang, L. L. Y., 1980, Geologic setting, mineralogy, and geochemistry of magmatic sulfide deposits, Duluth Complex, U.S.A, in Ridge, J. D., ed., Proceedings of the fifth quadrennial IAGOD symposium, Snowbird, Alta, Utah, 1978: Stuttgart, Schwizerbart'sche Verlagsbuchhandlung, v. 1, p. 545-565. ARCHEAN; BORNITE; CHALCOPYRITE; COPPER; CUBANITE; DISSEMINATED ORE; DRILL HOLE; DULUTH COMPLEX; EPIGENETIC; GEOCHEMISTRY; GEOLOGY; GIANTS RANGE BATHOLITH; GRANITE; LAYERED INTRUSION; MAGMATIC SULFIDES; MILLERITE; MINERAL CHEMISTRY; MINERAL DEPOSITS; MINERALIZATION; MINERALOGY; MINNESOTA; NICKEL; NM-5; ORE DEPOSIT; ORIGIN; PENTLANDITE; PETROGRAPHY; PYRRHOTITE; SOUTH KAWISHIWI INTRUSION; SPHALERITE; SULFIDES; SYNGENETIC; TROCTOLITE; UNITED-STATES;

Bonnichsen, B., and Tyson, R. M., 1975, Geology of the Ely-Hoyt Lakes region of the Duluth Complex, Minnesota. Geological Society of America, Field Trip Guidebook, Penrose Conference on mafic plutons and magmatic sulfides COPPER; DULUTH COMPLEX; ELY; GEOLOGY; GUIDEBOOK; HOYT LAKES; LAYERED INTRUSION; MAFIC; MAGMATIC SULFIDES; MINERAL DEPOSITS; MINNESOTA; NICKEL; ORE DEPOSIT; ST. LOUIS COUNTY; SULFIDES; UNITED-STATES;

Bonnichsen, W., 1968, Geology of metamorphosed Biwabik Iron-formation, Dunka River area, Minnesota, in Mining Symposium, 29th annual, and American Institute of Mining and Metallurgical Engineers, Minnesota Section, 41st annual meeting, Duluth, Proceedings. 29th Ann. Mining Sym.and 41st Minn. Sec. Mtg., AIME, Mpls., Univ. Minn., p. 53-58 BIWABIK IRON-FORMATION; CONTACT METAMORPHISM; DULUTH COMPLEX; DUNKA RIVER; GEOLOGY; IRON-FORMATION; LAYERED INTRUSION; LOWER-PROTEROZOIC; MINNESOTA; UNITED- STATES;

---, 1969, Geologic investigations in the southern part of the Duluth Complex, in Summary of fieldwork, 1969:, Minnesota Geological Survey, Information Circular 7, p. 19-20. DULUTH COMPLEX; GEOLOGY; LAYERED INTRUSION; MINNESOTA; ST. LOUIS COUNTY; UNITED- STATES;

Books, K. G., 1968, Magnetization of the lowermost Keweenawan lava flows in the Lake Superior area, in Geological Survey research in 1968:, U. S. Geological Survey, Professional Paper 600-D, p. D248-D254. FIELD-DIRECTION; GEOPHYSICS; LAKE SUPERIOR REGION; MAGNETIC-

19 PROPERTIES; MICHIGAN; PALEOMAGNETISM; POLARITY; PORTAGE LAKE VOLCANICS; REMANENCE; REMANENT MAGNETISM; SEDIMENTARY-ROCKS; SEDIMENTS; UNITED-STATES; UPPER-PENINSULA;

---, 1972, Paleomagnetism of some Lake Superior Keweenawan rocks:, U. S. Geological Survey, Professional Paper 760, 42 p. GEOPHYSICS; LAKE SUPERIOR; PALEOMAGNETISM; PROTEROZOIC;

Books, K. G., and Green, J. C., 1972, Further paleomagnetic data for Keweenawan rocks in the western Lake Superior area [abs.]: Geological Society of America Abstracts with Programs, v. 4, no. 7, p. 454. GEOPHYSICS; LAKE SUPERIOR; PALEOMAGNETISM; PROTEROZOIC;

Books, K. G., White, W. S., and Beck, M. E., Jr., 1966, Magnetization of Keweenawan gabbro in northern Wisconsin and its relation to time of intrusion, in Geological Survey Research 1966:, U. S. Geological Survey, Professional Paper 550-D, p. D117-D124. AGE DATING; GABBRO; GEOCHRONOLOGY; GEOPHYSICS; MELLEN COMPLEX; MICHIGAN; PALEOMAGNETISM; PORTAGE LAKE VOLCANICS; REMANENT-MAGNETIZATION; SEDIMENTARY-ROCKS; SEDIMENTS; UNITED-STATES; UPPER-PENINSULA; VOLCANIC ROCKS; WISCONSIN;

Born, P., Worona, R., and Stephanson, C., 1986, Precambrian geology of the Havilland-Goulais Bay area, District of Algoma: Ontario Geological Survey, Geological Series Preliminary Map, Map P.2959, scale 1:15,840. CANADA; DISTRICT OF ALGOMA; GEOLOGY; HAVILLAND FAULT; MAP; ONTARIO; STRUCTURAL-GEOLOGY;

Bornhorst, T. J., 1974, Geology and geochemistry of the Fish Cove Rhyolite, Keweenaw County, Michigan [abs.]: 20th Annual Institute on Lake Superior Geology, Sault Ste. Marie, ONT, v. 20, p. 5. FAULT; FISH COVE RHYOLITE; GEOCHEMISTRY; GEOLOGY; KEWEENAW COUNTY; KEWEENAW PENINSULA; LINEAMENT; MAJOR ELEMENT ANALYSES; MICHIGAN; MINOR ELEMENT ANALYSES; PORTAGE LAKE VOLCANICS; STRUCTURAL-GEOLOGY; TRACE ELEMENT ANALYSES; UNITED-STATES; UPPER-PENINSULA; WHOLE ROCK ANALYSES;

---, 1992, Michigan Tech earth science laboratory and experimental mine connecting with the Quincy native copper mine, Michigan, in Bornhorst, T. J., ed., Keweenawan copper deposits of the North American Midcontinent rift system:, Society of Economic Geologists, Guidebook Series, v. 13. COPPER; MICHIGAN; MICHIGAN COPPER DISTRICT; MINE; MINING; NATIVE COPPER; QUINCY MINE; UNITED-STATES; UPPER- PENINSULA;

---, 1992, Keweenawan copper deposits of western upper Michigan:, Society of Economic Geologists, Guidebook Series, 197 p. COPPER; GUIDEBOOK; MICHIGAN; MICHIGAN COPPER DISTRICT; NATIVE COPPER; ORE-DEPOSITS; UNITED-STATES; UPPER-PENINSULA;

---, 1995, Relationship between native copper deposits and tectonic development of the North American Midcontinent Rift System [abs.], in Ojakangas, R. W., Dickas, A. B., and Green, J. C., eds., Basement Tectonics 10: Proceedings of the Tenth International Conference on Basement Tectonics: Netherlands, Kluwer Academic Publishers, v. 4, p. 19-23. AGE; ALTERATION; BASALTS; BRECCIATION; BURIAL-METAMORPHISM; COMPRESSION; COMPRESSION-TECTONICS; FAULTS; FLUIDS; FRACTURES; GEOCHRONOLOGY; HYDROTHERMAL; JACOBSVILLE- SANDSTONE; KEWEENAW FAULT; KEWEENAW PENINSULA; LEACHING; METAMORPHISM; MICHIGAN; MICHIGAN COPPER DISTRICT; MINERALIZATION; NATIVE COPPER; NORMAL-FAULTS; ORE-DEPOSITS; ORONTO-GROUP; PORTAGE LAKE VOLCANICS; PREHNITE-PUMPELLYITE FACIES; REVERSE-FAULTS; RIFT BASIN; STRATABOUND; STRUCTURAL-GEOLOGY; TECTONICS; TRANSPORT; UNITED-STATES; UPPER-PENINSULA; VEINS; VOLCANIC ROCKS; ZEOLITE-FACIES;

Bornhorst, T. J., Kalliokoski, J., and Paces, J., 1986, The Keweenaw Native-Copper District, in Proterozoic sediment-hosted stratiform copper deposits in Upper Michigan and Belt Supergroup of Idaho and Montana: Ottawa, Geological Association of Canada, Mineralogical Association of Canada, Canada Geophysical Union, Joint Annual Meeting, p. 21-36. COPPER; MICHIGAN; MICHIGAN COPPER DISTRICT; MINING; NATIVE COPPER; ORE-DEPOSITS; ORIGIN; UNITED-STATES; UPPER-PENINSULA;

Bornhorst, T. J., Paces, J. B., Grant, N. K., Obradovich, J. D., and Huber, N. K., 1988, Age of native copper mineralization, Keweenaw Peninsula, Michigan: Economic Geology, v. 83, no. 3, p. 619-625. ALTERATION; CENTENNIAL-MINE; CONGLOMERATE; COPPER; COPPER-ORES; ECONOMIC GEOLOGY; EPIGENETIC; FISSION TRACK; FLOOD BASALTS; FREDA-SANDSTONE; GENESIS; HYDROTHERMAL; KEARSARGE AMYGDALOID; KEARSARGE FLOW; KEWEENAW PENINSULA; MICHIGAN; MICHIGAN COPPER DISTRICT; MINE; MINERAL DEPOSITS; MINERALIZATION; NATIVE COPPER; ORONTO-GROUP; OSCEOLA MINE; PARAGENESIS; PORTAGE LAKE VOLCANICS; RUBIDIUM-STRONTIUM; SANDSTONE; SEDIMENTARY-ROCKS; SEDIMENTS; SULFIDES; SUPERIOR MINE; UNITED- STATES; UPPER-PENINSULA; WOLVERINE MINE;

Bornhorst, T. J., and Rose, W. I., 1994, Self-guided geological field trip to the Keweenaw Peninsula, Michigan: 40th Annual Institute on Lake Superior Geology, Part 2, Field Trip Guidebook, 185 p. ALLOUEZ GAP FAULT; CENTRAL MINE; CLASTIC; CLIFF MINE; COPPER FALLS MINE; COPPER HARBOR CONGLOMERATE; COPPER-ORES; DELAWARE MINE; FREDA-SANDSTONE; GEOCHEMISTRY; GEOLOGY; GEOPHYSICS; GLACIAL GEOLOGY; GLACIAL LAKE DULUTH; GRAVITY; GREENSTONE FLOW; GUIDEBOOK; HANCOCK MINE; HOUGHTON-COUNTY; JACOBSVILLE-SANDSTONE; KEARSARGE CONGLOMERATE; KEARSARGE FLOW; KEWEENAW COUNTY; KEWEENAW FAULT; KEWEENAW PENINSULA; KINGSTON MINE; MICHIGAN; MINERAL DEPOSITS; MINERALIZATION; MOHAWK MINE; MOUNT BOHEMIA; MOUNT BOHEMIA STOCK; NATIVE COPPER; NONESUCH SHALE; ORONTO-GROUP; OSCEOLA MINE; PORTAGE LAKE VOLCANICS; QUINCY MINE; REFLECTION; SANDSTONE; SEDIMENTARY-ROCKS; SEISMIC; UNITED-STATES; UPPER-PENINSULA; WASHBURN STAGE; WOLVERINE MINE;

Bornhorst, T. J., Rose, W. I., Jr., and Paces, J. B., 1983, Field guide to the geology of the Keweenaw Peninsula, Michigan: Houghton, Michigan Technological University, 116 p. AREAL-GEOLOGY; COPPER HARBOR CONGLOMERATE; FREDA-SANDSTONE; GUIDEBOOK; JACOBSVILLE-SANDSTONE; KEWEENAW COUNTY; KEWEENAW PENINSULA; MICHIGAN; NONESUCH SHALE; ORONTO-GROUP; PORTAGE LAKE VOLCANICS; ROAD-LOG; SANDSTONE; SEDIMENTARY-ROCKS; SEDIMENTS; UNITED-STATES; UPPER- PENINSULA;

20 Bornhorst, T. J., and Whiteman, R. C., 1992, The Caledonia native copper mine, Michigan, in Bornhorst, T. J., ed., Keweenawan copper deposits of western upper Michigan:, Society of Economic Geologists, Guidebook Series, v. 13, p. 139-144. CALEDONIA MINE; COPPER; MICHIGAN; MICHIGAN COPPER DISTRICT; MINE; NATIVE COPPER; UNITED-STATES; UPPER-PENINSULA;

---, 1995, Native copper and associated minerals in basalts at the Caledonia Mine, western Upper Peninsula [abs.]: 41st Annual Institute on Lake Superior Geology, Marathon, ONT, v. 41, p. 3-4. ADULARIA; AMYGDULE; BASALTS; BRECCIATION; BUTLER FLOW; CALCITE; CALEDONIA MINE; CHLORITE; COPPER; DATOLITE; DEPOSITION; EPIDOTE; K-FELDSPAR; KEWEENAW PENINSULA; KNOWLTON FLOW; KNOWLTON LODE; LAUMONTITE; MICHIGAN; MICHIGAN COPPER DISTRICT; MINERALIZATION; NATIVE COPPER; NATIVE-SILVER; ORIGIN; PARAGENESIS; PORTAGE LAKE VOLCANICS; PREHNITE; PRODUCTION; PUMPELLYITE; QUARTZ; SILVER; UNITED-STATES; UPPER-PENINSULA; VEINS;

Bottriel, K. J., 1975, Rubidium-strontium isochron age studies of Nemogosenda and Prairie Lake [B.Sc. Thesis]: Carleton University, Ottawa, Ontario, Canada, 44 p. AGE DATING; ALKALIC COMPLEX; ALKALINE; CANADA; CARBONATITE; GEOCHRONOLOGY; NEMOGOSENDA LAKE ALKALIC COMPLEX; ONTARIO; PRAIRIE LAKE CARBONATITE COMPLEX; RUBIDIUM-STRONTIUM;

Bottriell, K. J., 1975, Rubidium-strontium isochron age studies at Nemegosenda and Prairie Lake [B.Sc. Thesis]: Carleton University, Ottawa, Ontario AGE DATING; ALKALIC COMPLEX; ALKALINE; ALKALINE INTRUSION; CANADA; CARBONATITE; DISTRICT OF THUNDER BAY; GEOCHRONOLOGY; NEMEGOSENDA LAKE ALKALIC COMPLEX; ONTARIO; PRAIRIE LAKE CARBONATITE COMPLEX; RUBIDIUM- STRONTIUM;

Boucher, M. L., 1975, Copper-nickel mineralization in a drill core from the Duluth Complex of northern Minnesota:, U. S. Bureau of Mines, Report of Investigations 8084, 55 p. DRILL HOLE; 34873; ANORTHOSITE; BABBITT; BIWABIK IRON-FORMATION; BORNITE; BRAVOITE; CHALCOPYRITE; COPPER; CUBANITE; DULUTH COMPLEX; GABBRO; HORNFELS; ILMENITE; INCLUSIONS; IRON-FORMATION; LAYERED INTRUSION; LOWER-PROTEROZOIC; MACKINAWITE; MAGNETITE; MINERAL DEPOSIT; MINERALIZATION; MINNAMAX; MINNESOTA; MODAL ANALYSES; NICKEL; PARTRIDGE RIVER INTRUSION; PEGMATITE; PENTLANDITE; PICRITE; PYRITE; PYRRHOTITE; SPHALERITE; SPINEL; ST. LOUIS COUNTY; SULFIDE; SULFIDES; TALNAKHITE; TROCTOLITE; TROILITE; ULVÖSPINEL; UNITED-STATES; VALLERITE; VEINS; VIOLARITE; XENOLITHS;

Boudreau, A. E., 1993, Chlorine as an exploration guide for the platinum-group elements in layered intrusions: Journal of Geochemical Exploration, v. 48, p. 21-38. AFRICA; APATITE; ARCHEAN; AUSTRALIA; BEARTOOTH MOUNTAINS; BUSHVELD COMPLEX; CENOZOIC; CHLORINE; DULUTH COMPLEX; EXPLORATION; FLUORINE; GEOCHEMISTRY; GREAT DYKE; GREENLAND; JIMBERLANA; KIGLAPAIT; LAYERED INTRUSION; MINERAL CHEMISTRY; MINNESOTA; MONTANA; MOUNT THIRSTY; MUNNI-MUNNI COMPLEX; ORA BANDA; PGE; PHANEROZOIC; PILBARA BLOCK; PLATINUM-GROUP ELEMENTS; SKAERGAARD INTRUSION; SOUTH AFRICA; STILLWATER COMPLEX; TERTIARY; UNITED-STATES; WESTERN AUSTRALIA; WINDIMURRA; ZIMBABWE;

Bowers, M. C., 1989, Vertical petrologic changes of the Jacobsville Sandstone at Rice Lake hole number 1 [M.S. Thesis]: Michigan Technological University, Houghton, 176 p. CAMBRIAN; DOWNHOLE; FLUVIAL-ENVIRONMENT; GEOPHYSICAL-SURVEYS; GEOPHYSICS; HOUGHTON-COUNTY; INTERPRETATION; JACOBSVILLE-SANDSTONE; LAKE SUPERIOR; LITHOFACIES; MICHIGAN; PALEOZOIC; PHANEROZOIC; RICE-LAKE; SANDSTONE; SEDIMENTARY-PETROLOGY; SEDIMENTARY-ROCKS; SEDIMENTATION; SEDIMENTS; SEISMIC; SEISMIC-LOGGING; STRATIGRAPHY; UNITED-STATES; UPPER-PENINSULA; WELL-LOGGING;

Bowers, M. C., Young, C. T., Smith, M. M., and Kalliokoski, J., 1989, A synthetic seismogram from sedimentary rocks near the Midcontinent Rift, Rice Lake, Keweenaw County, Michigan [abs.]: Eos (American Geophysical Union Transactions), v. 70, no. 15, p. 272-273. COMPUTER- PROGRAMS; DENSITY; GEOPHYSICAL-SURVEYS; GEOPHYSICS; JACOBSVILLE-SANDSTONE; KEWEENAW COUNTY; KEWEENAW PENINSULA; MICHIGAN; REACTIVATION; RICE-LAKE; SANDSTONE; SEDIMENTARY-ROCKS; SEDIMENTS; SEISMIC; SEISMIC- SURVEYS; SYNTHETIC-SEISMOGRAMS; UNITED-STATES; UPPER-PENINSULA; VELOCITY;

Bowie, W., 1917, Investigations of gravity and isostasy:, U. S. Coast and Geodetic Survey, Special Publication 40, 40 p. GEOPHYSICS; GRAVITY; PROTEROZOIC;

Bradley, J. W., and Hinze, W. J., 1976, Deep borehole gravity survey in Michigan [abs.]: Eos (American Geophysical Union Transactions), v. 57, no. 4, p. 326. BOREHOLE; GEOPHYSICS; GRATIOT-COUNTY; GRAVITY; GRAVITY-SURVEYS; LOWER PENINSULA; MCCLURE- SPARKS NO. 1; MICHIGAN; MICHIGAN-BASIN; UNITED-STATES;

Bradley, J. W., Hinze, W. J., and Brown, A. R., 1976, Results of the borehole gravimeter survey in the McClure-Sparks 1-8 well, Gratiot County, Michigan [abs.]: Eos (American Geophysical Union Transactions), v. 57, no. 10, p. 760. BOREHOLE; GEOPHYSICS; GRATIOT-COUNTY; GRAVITY; GRAVITY-SURVEYS; LOWER PENINSULA; MCCLURE-SPARKS NO. 1; MICHIGAN; MICHIGAN-BASIN; UNITED-STATES;

Brady, J. M., 1960, Ore and sedimentation of the Lower Sandstone at the White Pine mine, Michigan [M.S. Thesis]: Michigan Technological University, Houghton COPPER; LOWER SANDSTONE; MICHIGAN; MICHIGAN COPPER DISTRICT; MINE; MINERALIZATION; NONESUCH SHALE; ONTONAGON-COUNTY; ORONTO-GROUP; SEDIMENTATION; SEDIMENTOLOGY; SEDIMENTS; UNITED- STATES; UPPER-PENINSULA; WHITE PINE MINE;

Brannon, J. C., 1984, Geochemistry of successive lava flows of the Keweenawan North Shore Volcanic Group [Ph.D. Dissertation]: Washington University, St. Louis, Missouri, 312 p. GEOCHEMISTRY; LAVA; MINNESOTA; NORTH SHORE VOLCANIC GROUP; STRATIGRAPHY; UNITED-STATES; VOLCANIC; VOLCANIC ROCKS;

Brannon, J. C., Haskin, L. A., and Green, J. C., 1981, Fractional crystallization in the NSVG? [abs.]: Geological Society of America Abstracts with Programs, v. 13, p. 271. CRYSTALLIZATION; FRACTIONAL CRYSTALLIZATION; IGNEOUS-PROCESSES; MINNESOTA; NORTH SHORE VOLCANIC GROUP; UNITED-STATES; VOLCANIC ROCKS;

21 Brecke, E. A., 1968, Copper mineralization in the upper part of the Copper Harbor Conglomerate at White Pine, Michigan: Economic Geology, v. 63, p. 294. ALTERATION; COPPER; COPPER HARBOR CONGLOMERATE; ECONOMIC GEOLOGY; FLUORSPAR; GENESIS; HYDROTHERMAL; ILLINOIS; ILLINOIS KENTUCKY FLUORSPAR DISTRICT; IRON-REDUCTION; KENTUCKY; MICHIGAN; MICHIGAN COPPER DISTRICT; MINERAL DEPOSITS; NONESUCH SHALE; ONTONAGON-COUNTY; ORONTO-GROUP; SEDIMENTARY-ROCKS; SEDIMENTS; STRATABOUND; UNITED-STATES; UPPER-PENINSULA; WHITE PINE MINE;

Brewster, D., and Pollack, H. N., 1976, Continued heat flow investigations in the deep borehole [abs.]: Eos (American Geophysical Union Transactions), v. 57, p. 760. COLDWATER-SHALE; DUNDEE-LIMESTONE; GEOPHYSICAL-SURVEYS; GEOPHYSICS; GEOTHERMAL-GRADIENT; GRATIOT-COUNTY; HEAT-FLOW; JACOBSVILLE-SANDSTONE; MEASUREMENT; MICHIGAN; MICHIGAN-BASIN; SANDSTONE; SEDIMENTARY-ROCKS; SEDIMENTS; THERMAL-CONDUCTIVITY; TREMPELEAU-SANDSTONE; UNITED-STATES;

Brice, W., 1974, Technology of copper-nickel mining: Naturalist, v. 25, no. 2/3, p. 8-15. COPPER; DULUTH COMPLEX; MINING; MINNESOTA; NICKEL; REGIONAL COPPER-NICKEL STUDY; UNITED-STATES;

Brice, W. C., 1981, An analysis technique for mineral resource planning [Ph.D. Dissertation]: University of Minnesota, Minneapolis, 774 p. ANALYSIS; ANALYTICAL TECHNIQUES; COPPER; DULUTH COMPLEX; ENVIRONMENTAL IMPACT; LAND-USE; LAYERED INTRUSION; MINE PLANNING; MINERAL POTENTIAL; MINERAL RESOURCE; MINERAL-RESOURCES; MINNESOTA; NICKEL; ; PLANNING; UNITED-STATES;

Brice, W. C., and Gilgosch, M. A., 1976, The Regional Copper-Nickel Study: A systematic approach to mineral planning and environmental preservation: Naturalist, v. 27, no. 34, p. 46-48. COPPER; DULUTH COMPLEX; ENVIRONMENT; LAKE COUNTY; LAYERED INTRUSION; MINERAL PLANNING; MINING; MINNESOTA; NICKEL; REGIONAL COPPER-NICKEL STUDY; ST. LOUIS COUNTY; UNITED-STATES;

Brice, W. C., Martin, D., and Harstad, M., 1995, Key issues related to future mining in Minnesota: Skillings Mining Review, v. 89, no. 4, p. 4-9. AGGREGATE; ARCHEAN; BLOATING CLAY; CENOZOIC; CLAY; COPPER; DIMENSION STONE; DULUTH COMPLEX; ECONOMIC GEOLOGY; ENVIRONMENT; ENVIRONMENTAL IMPACT; GOLD; INDUSTRIAL MINERALS; KAOLINITE; LAYERED INTRUSION; MINNESOTA; NICKEL; NON-FERROUS MINERALS; PERMITTING; PHANEROZOIC; QUATERNARY; RECLAMATION; RESOURCES; TITANIUM; UNITED-STATES;

Broderick, T. M., 1917, The relation of iron ores in northeastern Minnesota to the Duluth gabbro [Ph.D. Dissertation]: University of Minnesota, Minneapolis DULUTH COMPLEX; IRON ORE; LAYERED INTRUSION; MINNESOTA; ORE DEPOSIT; UNITED-STATES;

---, 1917, The relation of the titaniferous of northeastern Minnesota to the Duluth Gabbro: Economic Geology, v. 12, p. 663-696. DULUTH COMPLEX; IRON ORE; LAYERED INTRUSION; MINNESOTA; ORE DEPOSIT; TITANIFEROUS MAGNETITE; UNITED-STATES;

---, 1918, Some features of magnetic surveys of the magnetite deposits of the Duluth Gabbro: Economic Geology, v. 13, p. 35-49. DULUTH COMPLEX; GEOPHYSICS; IRON ORE; LAYERED INTRUSION; MAGNETIC-SURVEYS; MAGNETICS; MAGNETITE; MINERAL DEPOSITS; MINNESOTA; UNITED-STATES;

---, 1929, Zoning in the Michigan copper deposits and its significance: Part 1. Distribution of arsenic in the Michigan native copper deposits: Economic Geology, v. 24, p. 149-162. ADVENTURE MINE; ALGODONITE; ARSENIC; ARSENIDES; ASHBED AMYGDALOID; ATLANTIC AMYGDALOID; ATLANTIC MINE; BALTIC AMYGDALOID; BALTIC MINE; BASE METAL ANALYSES; CALUMET AND HECLA CONGLOMERATE MINE; CALUMET-CONGLOMERATE; CHAMPION MINE; COBALT; COPPER; COPPER FALLS MINE; COPPER RANGE MINE; DOMEYKITE; FRANKLIN JUNIOR MINE; FRANKLIN MINE; GEOCHEMISTRY; HANCOCK MINE; HOUGHTON-COUNTY; INTERPOLATED MINE; ISLE ROYALE AMYGDALOID; ISLE ROYALE MINE; KEARSARGE AMYGDALOID; KEWEENAW COUNTY; KEWEENAW PENINSULA; LAKE MINE; MASS MINE; MICHIGAN; MICHIGAN COPPER DISTRICT; MINERALIZATION; NATIVE COPPER; NICKEL; ORE-DEPOSITS; ORIGIN; OSCEOLA AMYGDALOID; OSCEOLA MINE; PEWABIC AMYGDALOID; PHOENIX MINE; QUINCY MINE; SILVER; TRIMOUNTAIN MINE; UNITED-STATES; UPPER-PENINSULA; WHITNEYITE; WOLVERINE MINE; ZONING;

---, 1929, Zoning in Michigan copper deposits and its significance: Part II: Economic Geology, v. 24, p. 311-326. ADULARIA; ALTERATION; ANALCITE; ANKERITE; APOPHYLLITE; ARNOLD MINE; ARSENIC; ARSENIDES; BORNITE; CALCITE; CARBONATE; CHALCOCITE; CHLORITE; CLARK MINE; COBALT; COPPER; COPPER FALLS MINE; DATOLITE; DOMEYKITE; FLUIDS; KEARSARGE AMYGDALOID; LAUMONTITE; METAMORPHISM; MICHIGAN; MICHIGAN COPPER DISTRICT; MINERALIZATION; MINERALOGY; NATIVE COPPER; NATROLITE; NICKEL; ORIGIN; PREHNITE; PREHNITE-PUMPELLYITE FACIES; PUMPELLYITE; SERICITE; SILVER; SOLUTIONS; STILBITE; SULFIDES; UNITED-STATES; UPPER-PENINSULA; VEINS; ZEOLITE; ZONING;

---, 1931, Fissure vein and lode relations in Michigan copper deposits: Economic Geology, v. 26, p. 840-856. AHMEEK MINE; ALGODONITE; ALTERATION; ANKERITE; ARSENIC; ARSENIDES; ATLANTIC AMYGDALOID; BALTIC AMYGDALOID; BALTIC MINE; BORNITE; CALUMET-CONGLOMERATE; CENTRAL FISSURE; CENTRAL MINE; CHALCOCITE; CHALCOPYRITE; CLIFF FISSURE; CLIFF MINE; COBALT; COPPER; DATOLITE; DOMEYKITE; GREENSTONE FLOW; HANCOCK FAULT; ISLE ROYALE AMYGDALOID; ISLE ROYALE MINE; KEARSARGE AMYGDALOID; KEARSARGE CONGLOMERATE; KEWEENAW COUNTY; MAGNETITE; MASS FISSURE; METAMORPHISM; MICHIGAN; MICHIGAN COPPER DISTRICT; MINNESOTA FISSURE; MODEL; NATIVE COPPER; NICKEL; ORE- DEPOSITS; ORIGIN; OSCEOLA AMYGDALOID; PEWABIC AMYGDALOID; PHOENIX FISSURE; PHOENIX MINE; PREHNITE- PUMPELLYITE FACIES; PRODUCTION; PYRITE; QUINCY MINE; SPECULARITE; STRUCTURAL-GEOLOGY; SULFIDES; UNITED- STATES; UPPER-PENINSULA; VEINS; WHITNEYITE; WOLVERINE SANDSTONE;

---, 1935, Differentiation in lavas of the Michigan Keweenawan: Geological Society of America Bulletin, v. 46, p. 503-558. CANADA; CAPE SPENCER FLOW; COPPER; DIABASE; DIFFERENTIATION; GEOCHEMISTRY; GEOLOGY; GREENSTONE FLOW; IGNEOUS-PROCESSES; ISLE ROYALE; KEARSARGE FLOW; LAKE-HURON; MAJOR ELEMENT ANALYSES; MICHIGAN; MICHIGAN COPPER DISTRICT;

22 MODAL ANALYSES; NOVA SCOTIA; ONTARIO; ORIGIN; PORTAGE LAKE VOLCANICS; SILLS; SULFUR; UNITED-STATES; UPPER- PENINSULA; VOLCANIC ROCKS; WHOLE ROCK ANALYSES; WISCONSIN;

---, 1956, Copper deposits of the Lake Superior region [abs.]: 2nd Annual Institute on Lake Superior Geology, Houghton, MI, v. 2, p. 2-3. AMYGDALOID; ANTIMONIDES; ARSENIDES; CALUMET-CONGLOMERATE; CHALCOCITE; COBALT; COPPER; FISSURE VEIN; MICHIGAN; MICHIGAN COPPER DISTRICT; MINERALIZATION; NICKEL; ORE-DEPOSITS; SEDIMENTS; SULFIDES; UNITED-STATES; UPPER-PENINSULA;

Broderick, T. M., and Hohl, C. D., 1928, Geophysical methods applied to exploration and geologic mapping in the Michigan copper district: Economic Geology, v. 23, p. 489-514. EXPLORATION; GEOLOGY; GEOPHYSICS; MAPPING; MICHIGAN; MICHIGAN COPPER DISTRICT; UNITED- STATES; UPPER-PENINSULA;

---, 1935, Differentiation in traps and ore deposition: Economic Geology, v. 30, p. 301-312. BASALT; BASE METAL ANALYSES; BORNITE; CALUMET-CONGLOMERATE; CHALCOCITE; CHALCOPYRITE; COPPER; DIFFERENTIATION; FLUIDS; GEOLOGY; GREENSTONE FLOW; HYDROTHERMAL; KEARSARGE FLOW; MAGMATIC; MICHIGAN; MICHIGAN COPPER DISTRICT; MOUNT BOHEMIA STOCK; NATIVE COPPER; ORE GENESIS; OSCEOLA AMYGDALOID; PORTAGE LAKE VOLCANICS; SULFUR; UNITED-STATES; UPPER- PENINSULA; VOLATILES; VOLCANIC ROCKS;

---, 1935, The Michigan copper district: Copper resources of the world: 16th International Geological Congress, Washington, p. 271-284. COPPER; ECONOMIC GEOLOGY; MICHIGAN; MICHIGAN COPPER DISTRICT; MINERALIZATION; NATIVE COPPER; UNITED-STATES; UPPER- PENINSULA;

Broderick, T. M., Hohl, C. D., and Eidemiller, H. N., 1946, Recent contributions to the geology of the Michigan copper district: Economic Geology, v. 41, p. 675-725. ADVENTURE MINE; AHMEEK ANTICLINE; AHMEEK MINE; ALLOUEZ CONGLOMERATE; ALLOUEZ FAULT; ALLOUEZ MINE; ALTERATION; ARCADIAN MINE; ARSENIDES; ASHBED AMYGDALOID; ASHBED LODE; ATLANTIC LODE; ATLANTIC MINE; BALTIC AMYGDALOID; BALTIC LODE; BALTIC MINE; CALUMET AND HECLA CONGLOMERATE; CALUMET AND HECLA CONGLOMERATE MINE; CALUMET-CONGLOMERATE; CENTRAL FISSURE; CHALCOCITE; CHAMPION MINE; CLIFF FISSURE; COBALT; CONGLOMERATE; COPPER; COPPER FALLS MINE; DELAWARE MINE; DIFFERENTIATION; EPIGENETIC; EVERGREEN SERIES; FAULTS; FRANKLIN JUNIOR MINE; FREDA-SANDSTONE; GREENSTONE FLOW; HANCOCK FAULT; HOUGHTON CONGLOMERATE; HOUGHTON-COUNTY; IGNEOUS-PROCESSES; IROQUOIS LODE; ISLE ROYALE AMYGDALOID; ISLE ROYALE LODE; ISLE ROYALE MINE; KEARSARGE AMYGDALOID; KEARSARGE CONGLOMERATE; KEARSARGE FAULT; KEARSARGE FLOW; KEARSARGE LODE; KEWEENAW COUNTY; KEWEENAW FAULT; LASALLE MINE; MAP; MASS MINE; MAYFLOWER FAULT; MICHIGAN; MICHIGAN COPPER DISTRICT; MICHIGAN MINE; MINERALIZATION; MINNESOTA MINE; NATIVE COPPER; NEW ARCADIAN MINE; NICKEL; NONESUCH SHALE; NORTH KEARSARGE MINE; OJIBWAY MINE; ONTONAGON- COUNTY; ORIGIN; ORONTO-GROUP; OSCEOLA AMYGDALOID; OSCEOLA MINE; PEWABIC AMYGDALOID; PEWABIC LODE; PHOENIX FISSURE; PORTAGE LAKE VOLCANICS; QUINCY MINE; SANDSTONE; SEDIMENTARY-ROCKS; SENECA MINE; STRUCTURAL-GEOLOGY; SULFIDES; SUPERIOR MINE; SYNGENETIC; TEMPERATURE; THICKNESS; TRIMOUNTAIN MINE; UNITED- STATES; UPPER-PENINSULA; VICTORIA MINE; VOLCANIC ROCKS; WHITE PINE FAULT; WHITE PINE MINE; WOLVERINE SANDSTONE; ZONING;

Brojanigo, A., 1984, Keweenaw Fault: Structures and sedimentology [M.S. Thesis]: Michigan Technological University, Houghton, 124 p. CAMBRIAN; COMPRESSION-TECTONICS; CONTROLS; FAULT-ZONES; FAULTS; JACOBSVILLE-SANDSTONE; KEWEENAW FAULT; LAKE; MICHIGAN; ORONTO-GROUP; PALEOZOIC; PHANEROZOIC; PORTAGE LAKE VOLCANICS; REVERSE-FAULTS; SANDSTONE; SEDIMENTARY-ROCKS; SEDIMENTATION; SEDIMENTOLOGY; SEDIMENTS; STRUCTURAL-GEOLOGY; TECTONIC-CONTROLS; UNITED-STATES; UPPER-PENINSULA;

Brojonigo, A., 1984, Keweenaw Fault: Structures and sedimentology [M.S. Thesis]: Michigan Technological University, Houghton, 124 p. FAULT; KEWEENAW FAULT; MICHIGAN; SEDIMENTARY-ROCKS; SEDIMENTOLOGY; STRUCTURAL-GEOLOGY; UNITED-STATES; UPPER- PENINSULA;

Broman, W. H., 1953, Geophysical investigation of the Bear Lake area, Houghton County, Michigan [M.S. Thesis]: Michigan Technological University, Houghton, 46 p. GEOPHYSICS; HOUGHTON-COUNTY; KEWEENAW PENINSULA; MICHIGAN; UNITED-STATES; UPPER- PENINSULA;

Brooks, E. R., and Garbutt, P. L., 1969, Age and genesis of quartz porphyry near White Pine, Michigan: Economic Geology, v. 64, p. 342-346. COPPER; IGNEOUS INTRUSIONS; MICHIGAN; MICHIGAN COPPER DISTRICT; MINERALIZATION; NONESUCH SHALE; ONTONAGON- COUNTY; ORONTO-GROUP; QUARTZ PORPHYRY; SEDIMENTARY-ROCKS; SEDIMENTS; UNCONFORMITY; UNITED-STATES; UPPER-PENINSULA; WHITE PINE MINE;

Brooks, K. N., and White, A., 1978, Regional analysis of hydrologic information for the copper-nickel region, northeastern Minnesota: St. Paul, MN, Department of Forest Products, University of Minnesota, Final Report to the Minnesota Environmental Quality Board, DISCHARGE; DULUTH COMPLEX; HYDROLOGY; LAKE COUNTY; LAYERED INTRUSION; MINNESOTA; REGIONAL COPPER-NICKEL STUDY; ST. LOUIS COUNTY; STREAMFLOW; UNITED-STATES; WATERSHEDS;

Brooks, T. B., and Pumbelly, R., 1872, On the age of the copper-bearing rocks of Lake Superior: American Journal of Science, v. 3, p. 428-432. AGE; COPPER; MICHIGAN; MINERALIZATION; UNITED-STATES; WISCONSIN;

Brothers, J. A., 1967, The physical, chemical, and ion-exchange properties of laumontite from the Osceola #6 Mine, Houghton County, Michigan [M.S. Thesis]: Michigan Technological University, Houghton, 55 p. HOUGHTON-COUNTY; KEWEENAW PENINSULA; LAUMONTITE; MICHIGAN; MICHIGAN COPPER DISTRICT; MINE; OSCEOLA MINE; UNITED-STATES; UPPER-PENINSULA; ZEOLITE;

23 Brown, A. C., 1965, Mineralogy at the top of the cupriferous zone, White Pine mine, Ontonagon Co., Michigan [M.S. Thesis]: University of Michigan, Ann Arbor COPPER; MICHIGAN; MICHIGAN COPPER DISTRICT; MINE; MINERALOGY; NONESUCH SHALE; ONTONAGON-COUNTY; ORONTO-GROUP; UNITED-STATES; UPPER-PENINSULA; WHITE PINE MINE;

---, 1971, Zoning in the White Pine copper deposit, Ontonagon County, Michigan: Economic Geology, v. 66, p. 543-573. COPPER; ECONOMIC GEOLOGY; GENESIS; MICHIGAN; MICHIGAN COPPER DISTRICT; MINERAL DEPOSITS; MINERAL-ZONING; NONESUCH SHALE; ONTONAGON-COUNTY; ORONTO-GROUP; SEDIMENTARY-ROCKS; SEDIMENTS; UNITED-STATES; UPPER-PENINSULA; WHITE PINE MINE; ZONING;

---, 1973, Mineral assemblages in the White Pine copper deposit, northern Michigan (USA), in Probleme der paragenese: Topical report of IAGOD:, v. IV, p. 65-83. ALLOY; AREAL-GEOLOGY; CHALCOCITE; COPPER; COPPER HARBOR CONGLOMERATE; ECONOMIC GEOLOGY; GENESIS; GEOCHEMISTRY; LAKE SUPERIOR; MICHIGAN; MICHIGAN COPPER DISTRICT; NATIVE COPPER; NONESUCH SHALE; ONTONAGON-COUNTY; ORE-DEPOSITS; ORONTO-GROUP; PARAGENESIS; PORCUPINE MOUNTAINS; SEDIMENTARY-ROCKS; SEDIMENTS; UNITED-STATES; UPPER-PENINSULA; WHITE PINE MINE;

---, 1974, The copper province of northern Michigan, U.S.A, in Bartholome, P., ed., Gisements stratiformes et provinces cupriferes: Liege, Belgium, Societie Geologique de Belgique, p. 317-330. ALLOY; AMYGDALOIDAL; CLASTICS; CONGLOMERATE; COPPER; ECONOMIC GEOLOGY; GENESIS; KEWEENAW PENINSULA; MICHIGAN; MICHIGAN COPPER DISTRICT; NATIVE COPPER; ORE-DEPOSITS; RED- BEDS; SEDIMENTARY-ROCKS; SEDIMENTS; SHALE; STRATIFORM; TECTONICS; UNITED-STATES; UPPER-PENINSULA;

---, 1974, An epigenetic origin for stratiform Cd-Pb-Zn sulfides in the lower Nonesuch Shale, White Pine, Michigan: Economic Geology, v. 69, p. 271-274. CADMIUM; COPPER; ECONOMIC GEOLOGY; EPIGENETIC; EXPERIMENTAL STUDIES; GENESIS; LEAD; MICHIGAN; MICHIGAN COPPER DISTRICT; MINERAL DEPOSITS; NONESUCH SHALE; ONTONAGON-COUNTY; ORONTO-GROUP; POLYMETALLIC-ORES; SEDIMENTARY-ROCKS; SEDIMENTS; STRATIFORM; SULFIDES; SYNTHESIS; UNITED-STATES; UPPER- PENINSULA; WHITE PINE MINE; ZINC;

---, 1981, Stratiform copper deposits and pene-exhalative environments [abs.]: Geological Society of America Abstracts with Programs, v. 13, no. 7, p. 418. CANADA; COPPER HARBOR CONGLOMERATE; COPPER-ORES; ECONOMIC GEOLOGY; EXHALATIVE-PROCESSES; METAL-ORES; MICHIGAN; MINERAL DEPOSITS, GENESIS; NONESUCH SHALE; NORTHWEST TERRITORY; ORONTO-GROUP; SEDIMENTARY-ROCKS; SEDIMENTS; UNITED-STATES; WHITE PINE REGION;

---, 1992, Sediment-hosted stratiform copper deposits: Geoscience Canada, v. 19, no. 2, p. 125-141. AFRICA; AQUEOUS; BORNITE; CARBONATE; CENTRAL AFRICA COPPERBELT; CHALCOCITE; CHALCOPYRITE; CHLORIDES; COBALT; COPPER; COPPER HARBOR CONGLOMERATE; DIAGENESIS; DISSEMINATED ORE; ECONOMIC GEOLOGY; EUROPE; GALENA; KAMOTO MINE; KATANGAN EMBAYMENT; ; LEAD; LOWER SANDSTONE; LUFILIAN ARC; MARKER BED; MICHIGAN; MICHIGAN COPPER DISTRICT; MINERALOGY; MONTANA; NATIVE COPPER; NATIVE-SILVER; NCHANGA MINE; NONESUCH SHALE; NORTHWEST TERRITORIES; ONTONAGON-COUNTY; ORONTO-GROUP; OXIDATION; PARTING-SHALE; POLAND; REDOX; REDSTONE MINE; REDUCTION; REVETT FORMATION; RIFT BASIN; RIFTING; RIFTS; SEDIMENT-HOSTED; SILVER; SOLUTIONS; SPAR LAKE MINE; SPHALERITE; STRATIFORM; SULFUR; TRANSPORT; TROY MINE; UNITED-STATES; UPPER SANDSTONE; UPPER SHALE; UPPER- PENINSULA; WHITE PINE MINE; ZAIRE; ZAMBIA; ZINC; ZONING;

Brown, A. C., and Trammell, J. W., 1966, Zoning of the White Pine copper deposit, Ontonagon County, Michigan [abs.]: Economic Geology, v. 61, p. 1308. BORNITE; CHALCOCITE; CHALCOPYRITE; COPPER; DIAGENESIS; DIGENITE; EPIGENETIC; MICHIGAN; MICHIGAN COPPER DISTRICT; MINERALIZATION; NATIVE COPPER; NATIVE-SILVER; ONTONAGON-COUNTY; PYRITE; REPLACEMENT; STRIPEY SHALE; SULFIDES; SULFUR; SYNGENETIC; UNITED-STATES; UPPER-PENINSULA; WHITE PINE MINE; ZONING;

---, 1966, Zoning of the White Pine Copper deposit, Ontonagon Co., Michigan [abs.]: 12th Annual Institute on Lake Superior Geology, Sault Ste. Marie, MI, v. 12, p. 4. BORNITE; CHALCOCITE; CHALCOPYRITE; COPPER; DIGENITE; DISSEMINATED ORE; MICHIGAN; MICHIGAN COPPER DISTRICT; NATIVE COPPER; NATIVE-SILVER; NONESUCH SHALE; ONTONAGON-COUNTY; ORONTO-GROUP; PYRITE; STRIPEY SHALE; SULFIDES; UNITED-STATES; UPPER-PENINSULA; WHITE PINE MINE; ZONING;

Brown, J. L., and Haynes, C. W., 1956, Geology of the Mount Gratiot area [M.S. Thesis]: Michigan Technological University, Houghton, 44 p. GEOLOGY; MICHIGAN; MOUNT GRATIOT; UNITED-STATES; UPPER-PENINSULA; VOLCANIC ROCKS;

Brown, K. C., and Beaumont, C., 1989, Kinematic models of the Midcontinent Rift beneath Lake Superior constrained by GLIMPCE data [abs.]: Eos (American Geophysical Union Transactions), v. 70, no. 15, p. 275. GEOPHYSICS; GLIMPCE; LAKE SUPERIOR; MODELLING; MODELS; RIFT BASIN; SEDIMENTS; SEISMIC; SEISMIC-SURVEYS; VOLCANIC ROCKS;

Brown, L., Jensen, L., Oliver, J., Kaufman, S., and Steiner, D., 1982, Rift structure beneath the Michigan Basin from COCORP profiling: Geology, v. 10, p. 645-649. COCORP; CONGLOMERATE; GEOPHYSICS; GRAVITY; LOWER PENINSULA; MCCLURE-SPARKS NO. 1; MICHIGAN; MICHIGAN-BASIN; PALEOZOIC; PHANEROZOIC; RED-BEDS; REFLECTION; SANDSTONE; SEDIMENTARY-ROCKS; SEDIMENTS; SEISMIC; SEISMIC-SURVEYS; UNITED-STATES;

Brown, L., Serpa, L., Setzer, T., Oliver, J., Kaufman, S., Lillie, R., Steiner, D., and Steeples, D. W., 1983, Intracrustal complexity in the United States midcontinent: Preliminary results from COCORP surveys in northeastern Kansas: Geology, v. 11, no. 1, p. 25-30. COCORP; GEOPHYSICS; KANSAS; MOHO; ; REFLECTION; SEISMIC; SEISMIC-SURVEYS; UNITED-STATES; VELOCITY;

Browning, T. D., 1986, Age of copper mineralization in the flow tops of the Portage Lake Lava Series determined by paleomagnetic methods [M.S. Thesis]: Michigan Technological University, Houghton, 62 p. COPPER-ORES; ECONOMIC GEOLOGY; EPIGENE-PROCESSES;

24 GEOPHYSICS; ; HEMATITIZATION; MAGNETITE; METAL-ORES; MICHIGAN; OXIDES; PALEOMAGNETISM; PORTAGE LAKE VOLCANICS; SEDIMENTARY-ROCKS; SEDIMENTS; STRATIGRAPHY; UNITED-STATES; UPPER-PENINSULA;

Brumleve, C., 1976, Petrology and fracture characteristics of the Kingston Conglomerate, Keweenaw County, Michigan [abs.]: 22nd Annual Institute on Lake Superior Geology, St. Paul, MN, v. 22, p. 13. COMPOSITION; CONDUCTIVITY; CONGLOMERATE; COPPER; FRACTURES; GEOPHYSICS; HEMATITE; KEWEENAW COUNTY; KEWEENAW PENINSULA; KINGSTON CONGLOMERATE; MICHIGAN; MICHIGAN COPPER DISTRICT; MINERALIZATION; NATIVE COPPER; PERMEABILITY; PETROLOGY; SEDIMENTARY-ROCKS; STRUCTURAL- GEOLOGY; UNITED-STATES; UPPER-PENINSULA;

Brumleve, C. B., 1976, The petrology and fracture characteristics of a native copper-bearing conglomerate, Kingston mine, Keweenaw County, Michigan [M.S. Thesis]: Michigan Technological University, Houghton, 97 p. CONGLOMERATE; COPPER; FRACTURES; KEWEENAW COUNTY; KINGSTON MINE; MICHIGAN; MICHIGAN COPPER DISTRICT; MINE; NATIVE COPPER; PETROLOGY; STRUCTURAL- GEOLOGY; UNITED-STATES; UPPER-PENINSULA;

Brummer, J. J., MacFadyen, C. C., and Pegg, C. C., 1992, Discovery of kimberlites in the Kirkland Lake area, northern Ontario, Canada - Part I: Early surveys and surficial geology: Exploration and Mining Geology, v. 1, no. 4, p. 339-350. AEROMAGNETIC SURVEY; AEROMAGNETICS; CANADA; CENOZOIC; CHROME DIOPSIDE; DIAMONDS; DIKE; ESKER; GARNETS; GAUTHIER TOWNSHIP; GEOPHYSICS; GLACIAL GEOLOGY; HISTORY; KIMBERLITES; KIMBERLITIC INDICATOR MINERALS; KIRKLAND LAKE; MICHAUD TOWNSHIP; ONTARIO; PHANEROZOIC; PLEISTOCENE; PYROPE; QUATERNARY; SAMPLING; UPPER CANADA MINE;

Brummer, J. J., MacFadyen, D. A., and Pegg, C. C., 1992, Discovery of kimberlites in the Kirkland Lake area, northern Ontario, Canada - Part II: Kimberlite discoveries, sampling, diamond content, ages and emplacement: Exploration and Mining Geology, v. 1, no. 4, p. 351-370. ABITIBI SUBPROVINCE; AEROMAGNETIC SURVEY; AEROMAGNETICS; AGE; ALKALINE; ARCHEAN; CANADA; CANADIAN SHIELD; CENOZOIC; CRETACEOUS; DIAMONDS; DIATREME; DIKES; DISCOVERY; EMPLACEMENT; EXPLORATION; GEOLOGY; GEOPHYSICS; GLACIAL DRIFT; GLACIAL GEOLOGY; GRADE; GREENSTONE BELTS; HOST ROCKS; JAMES BAY LOWLANDS; ; KIMBERLITES; KIRKLAND LAKE; LAKE TIMISKAMING ; LAKE TIMISKAMING STRUCTURAL ZONE; MESOZOIC; ONTARIO; PHANEROZOIC; PLEISTOCENE; PROSPECTING; QUATERNARY; RIFT-ZONES; SAMPLING; STRUCTURAL- GEOLOGY; SUPERIOR CRATON; SURFICIAL GEOLOGY; ULTRAMAFIC;

Buchheit, R. L., 1959, The opaque minerals of the basic igneous rocks of Minnesota [M.S. Thesis]: University of Minnesota, Minneapolis, 109 p. DULUTH COMPLEX; LAYERED INTRUSION; MAFIC; MINERALOGY; MINNESOTA; UNITED-STATES;

Buchheit, R. L., Malmquist, K. L., and Niebuhr, J. R., 1989, 1989 Glacial drift geochemistry for strategic minerals:, Minnesota Department of Natural Resources, Division of Minerals, Report 262, 275 p. BIOGEOCHEMISTRY; DULUTH COMPLEX; EXPLORATION; EXPLORATION TECHNIQUES; GEOCHEMISTRY; GLACIAL DRIFT; GLACIATION; LAKE COUNTY; LAYERED INTRUSION; MINNESOTA; STRATEGIC MINERALS; UNITED-STATES;

Buckstaff, S., 1923, A study of the distribution of magnetite in one of the Keweenawan lava flows [M.S. Thesis]: University of Wisconsin MAGNETITE; UNITED-STATES; VOLCANIC ROCKS; WISCONSIN;

Bumgarner, E. L., 1980, The geology of the Portage Lake Volcanics in the M.T.U. Mining Laboratory, Hancock, Michigan [M.S. Thesis]: Michigan Technological University, Houghton, 138 p. BASALT; GEOLOGY; HANCOCK; HOUGHTON-COUNTY; KEWEENAW PENINSULA; MICHIGAN; PORTAGE LAKE VOLCANICS; UNITED-STATES; UPPER-PENINSULA; VOLCANIC ROCKS;

Burke, K., and Dewey, J. L., 1973, Plume-generated triple junctions: Key indicators in applying to old rocks: Journal of Geology, v. 81, p. 406-433. PLATE TECTONICS; PLUME; RIFTING; TRIPLE JUNCTIONS;

Burke, K. C., and Dewey, J. F., 1973, Plume generated triple junctions: Key indicators in applying plate tectonics to old rocks: Journal of Geology, v. 81, p. 406-433. AFRICA; CANADA; LAKE SUPERIOR; ONTARIO; PLATE TECTONICS; PLUME; RIFTING; TRIPLE JUNCTIONS; UNITED-STATES;

Burke, M. M., and Salisbury, M. H., 1989, Preliminary velocity measurements in the Grenville Front: Do mylonites cause high reflectivity in the Grenville Front Tectonic Zone? [abs.]: Eos (American Geophysical Union Transactions), v. 70, no. 15, p. 271. AEROMAGNETIC ANOMALY; AEROMAGNETICS; CANADA; GEOPHYSICS; GLIMPCE; GRENVILLE FRONT TECTONIC ZONE; GRENVILLE-FRONT; LAKE SUPERIOR; MYLONITE; ONTARIO; REFLECTION; SEISMIC; SEISMIC LINE J; SEISMIC-SURVEYS; UNITED-STATES; VELOCITY;

Burnell, J. R., Jr., 1976, Petrology and structural relations of the Brule Lake intrusions, Cook County, Minnesota [M.S. Thesis]: University of Minnesota, Duluth, 154 p. BRULE LAKE; COOK COUNTY; DIABASE; DULUTH COMPLEX; FELSIC SERIES; LAYERED INTRUSION; MINNESOTA; NORTH SHORE VOLCANIC GROUP; PETROLOGY; STRUCTURAL-GEOLOGY; UNITED-STATES; VOLCANIC ROCKS;

---, 1976, The petrology and structural relations of the later Precambrian Brule Lake Intrusions, Cook County, Minnesota [abs.]: 22nd Annual Institute on Lake Superior Geology, St. Paul, MN, v. 22, p. 14. BRULE LAKE; BRULE LAKE INTRUSIONS; COOK COUNTY; DIABASE; DULUTH COMPLEX; MINERALOGY; MINNESOTA; NORTH SHORE VOLCANIC GROUP; PETROLOGY; STRUCTURAL-GEOLOGY; UNITED- STATES;

Burnie, S. W., Schwarcz, H. P., and Crocket, J. H., 1972, A sulfur isotopic study of the White Pine mine, Michigan: Economic Geology, v. 67, p. 895- 914. CHALCOCITE; COPPER; ECONOMIC GEOLOGY; GENESIS; GEOCHEMISTRY; MICHIGAN; MICHIGAN COPPER DISTRICT; MINE; NONESUCH SHALE; ONTONAGON-COUNTY; ORE-DEPOSITS; ORONTO-GROUP; SEDIMENTARY-ROCKS; SEDIMENTS; STABLE- ISOTOPES; SULFUR ISOTOPES; UNITED-STATES; UPPER-PENINSULA; WHITE PINE MINE;

25 ---, 1972, A sulphur isotopic study of the White Pine Mine, Michigan [abs.]: Geological Society of America Abstracts with Programs, v. 4, no. 7, p. 462. CHALCOCITE; COPPER; DISTRIBUTION; ECONOMIC GEOLOGY; GENESIS; GEOCHEMISTRY; MICHIGAN; MICHIGAN COPPER DISTRICT; MINE; MINERAL DEPOSITS; NONESUCH SHALE; ONTONAGON-COUNTY; ORE-DEPOSITS; ORONTO-GROUP; SEDIMENTARY-PROCESSES; SEDIMENTARY-ROCKS; SEDIMENTS; STABLE-ISOTOPES; SULFIDES; SULFUR ISOTOPES; UNITED- STATES; UPPER-PENINSULA; WHITE PINE MINE;

Burruss, R. C., and Mauk, J. L., 1992, Proterozoic oil in fluid inclusions in the Midcontinent Rift; implications for the origin of oil at White Pine, Michigan [abs.]: Geological Society of America Abstracts with Programs, v. 24, p. 213. ALIPHATIC-HYDROCARBONS; ALKANES; CALCITE; COMPRESSION-TECTONICS; COPPER; COPPER-ORES; FLUID INCLUSIONS; FLUORESCENCE; GAS-CHROMATOGRAMS; GENESIS; HYDROCARBONS; HYDROTHERMAL; MICHIGAN; MICHIGAN COPPER DISTRICT; NONESUCH SHALE; OIL; ONTONAGON-COUNTY; ORONTO-GROUP; PETROLEUM; SEDIMENTARY-ROCKS; SEDIMENTS; THERMAL-MATURITY; UNITED-STATES; UPPER-PENINSULA; WHITE PINE MINE;

Burwash, E. M., 1905, Geology of Michipicoten Island:, University of Toronto Studies, no. 3, CANADA; GEOLOGY; MICHIPICOTEN ISLAND; ONTARIO; PROTEROZOIC;

Butler, B. K., 1989, Hydrogen isotope study of the Babbitt Cu-Ni deposit, Duluth Complex, Minnesota [M.S. Thesis]: Indiana University, Bloomington, 180 p. DRILL HOLES; 10030; 10031; 10039; 10040; 10052; 10053; 10065; 10066; 10120; 10121; 10134; 10135; 10136; 10138; 10139; 10172; 24981; 26082; ANIMIKIE; ANIMIKIE GROUP; B1-136; B1-146; B1-156; B1-214; BABBITT; COPPER; DDH MDD2; DULUTH COMPLEX; DUNKA ROAD; HYDROGEN ISOTOPES; HYDROTHERMAL; LAYERED INTRUSION; LOCAL BOY; LOWER-PROTEROZOIC; MINERAL DEPOSIT; MINERALIZATION; MINNAMAX; MINNESOTA; NICKEL; ORE DEPOSIT; PARTRIDGE RIVER INTRUSION; PARTRIDGE RIVER TROCTOLITE SERIES; SEDIMENTARY-ROCKS; ST. LOUIS COUNTY; STABLE-ISOTOPES; SULFIDE; SULFIDES; TIGER BOY; UNITED-STATES; VIRGINIA FORMATION;

Butler, B. K., and Ripley, E. M., 1987, Hydrogen isotope study of metasedimentary and igneous rocks at the Babbitt Cu-Ni deposit, Duluth Complex [abs.]: Geological Society of America Abstracts with Programs, v. 19, p. 191. DRILL HOLES; 10030; 10031; 10039; 10040; 10052; 10053; 10065; 10066; 10120; 10121; 10134; 10135; 10136; 10138; 10139; 10172; 24981; 26082; ANIMIKIE; ANIMIKIE GROUP; B1-136; B1-146; B1-156; B1- 214; BABBITT; COPPER; DDH MDD2; DULUTH COMPLEX; DUNKA ROAD; HYDROGEN ISOTOPES; LAYERED INTRUSION; LOWER- PROTEROZOIC; MINERAL DEPOSIT; MINERALIZATION; MINNAMAX; MINNESOTA; NICKEL; ORE DEPOSIT; PARTRIDGE RIVER INTRUSION; PARTRIDGE RIVER TROCTOLITE SERIES; SEDIMENTARY-ROCKS; ST. LOUIS COUNTY; STABLE-ISOTOPES; SULFIDE; SULFIDES; UNITED-STATES; VIRGINIA FORMATION;

Butler, B. S., and Burbank, W. S., 1929, The copper deposits of Michigan:, U. S. Geological Survey, Professional Paper 144, 238 p. BASALT; COPPER HARBOR CONGLOMERATE; COPPER-ORES; MICHIGAN; MINERALIZATION; ORE-DEPOSITS; ORONTO-GROUP; PORTAGE LAKE VOLCANICS; THICKNESS; UNITED-STATES; UPPER-PENINSULA; VOLCANIC ROCKS;

Cambray, F. W., 1979, The Precambrian basement of Michigan [abs.], in The hydrocarbon potential-The Michigan Basin-The way ahead, a symposium: Lansing, Michigan Basin Geological Society, p. 5. BASEMENT; LOWER PENINSULA; MICHIGAN; UNITED-STATES; UPPER- PENINSULA;

---, 1988, A tectonic model for the Mid-Continental Rift System [abs.]: 34th Annual Institute on Lake Superior Geology, Marquette, MI, v. 34, p. 17. DETACHMENT FAULTS; DULUTH COMPLEX; FAULTS; HORSTS; LAKE SUPERIOR; METAMORPHISM; MINNESOTA; MODEL; PLATE TECTONICS; RIFTING; SAINT CROIX HORST; STRUCTURAL-GEOLOGY; TECTONICS; UNITED-STATES;

Cambray, F. W., Hodder, R. W., and Scott, G. W., 1993, Reactivated Archean structures, Proterozoic stratigraphy and mineral deposits, western upper Michigan [abs.]: 39th Annual Institute on Lake Superior Geology, Eveleth, MN, v. 39, p. 19. ARCHEAN; BASINS; COLLISION; DIAMONDS; FAULTS; FOLDING; IRON-FORMATION; KIMBERLITES; LOWER-PROTEROZOIC; MICHIGAN; MINERAL DEPOSITS; ; PLATE TECTONICS; REACTIVATION; RIFTING; SEDIMENTATION; STRATIGRAPHY; STRUCTURAL-GEOLOGY; UNITED- STATES; UPPER-PENINSULA;

Campbell, I. H., and Griffiths, R. W., 1993, The evolution of the mantle's chemical structure: Lithos, v. 30, p. 389-399. AFRICA; AGE; ARCHEAN; BASALTS; CANADA; CAPE SMITH; CHUKOTAT SUITE; COLD PLUME; CONVECTION; CORE; CRUSTAL CONTAMINATION; DEPLETED MANTLE; ENRICHED MANTLE; EUROPE; EVOLUTION; FLOOD BASALTS; GEOCHEMISTRY; HOT PLUME; HOTSPOT; KAROO; KOMATIITE; ; LITHOSPHERIC MANTLE; LOWER MANTLE; LOWER-PROTEROZOIC; MAGMA; MANTLE; MELTING; MESOZOIC; MODEL; MORB; NEODYMIUM ISOTOPES; OCEANIC ISLAND BASALTS; OIB; PECHENGA; PHANEROZOIC; PICRITES; PLATE TECTONICS; PLUME; RADIOGENIC ISOTOPES; RARE-EARTH ELEMENTS; REE; RUSSIA; SIBERIA; ; SOURCE; SOUTH AFRICA; STRONTIUM ISOTOPES; SUBDUCTION; TEMPERATURE; THERMAL BOUNDARY LAYER; TRACE ELEMENTS ANALYSES; TRIASSIC; UNITED-STATES; UPPER MANTLE;

Campbell, R. E., 1952, Geophysical investigations of the Silver Mountain area, Houghton County, Michigan [M.S. Thesis]: Michigan Technological University, Houghton, 38 p. GEOPHYSICS; HOUGHTON-COUNTY; MICHIGAN; UNITED-STATES; UPPER-PENINSULA;

Cannon, W. F., 1978, A middle and late Precambrian fault system in northern Wisconsin and northern Michigan [abs.]: 24th Annual Institute on Lake Superior Geology, Milwaukee, WI, v. 24, p. 8. AEROMAGNETICS; DIABASE; DIKES; FAULTS; GEOPHYSICS; GRAVITY; LOWER- PROTEROZOIC; MICHIGAN; PENOKEAN OROGENY; STRUCTURAL-GEOLOGY; TECTONICS; TRANSFORM FAULTS; UNITED- STATES; UPPER-PENINSULA; WISCONSIN;

---, 1979, Day 6; Marquette iron district, in Field trip guidebook for Archean and Proterozoic stratigraphy of the Great Lakes area, United States and Canada:, Minnesota Geological Survey, Guidebook Series, p. 59-62. AREAL-GEOLOGY; ENCHANTMENT LAKE FORMATION; GUIDEBOOK;

26 IRON; IRON ORE; JACOBSVILLE-SANDSTONE; MARQUETTE; MARQUETTE COUNTY; MICHIGAMME FORMATION; MICHIGAN; SANDSTONE; SEDIMENTARY-ROCKS; SEDIMENTS; UNITED-STATES;

---, 1987, U.S. and Canada do low-cost seismic work: Geotimes, v. 32, p. 9-10. CANADA; DISTRICT OF ALGOMA; DISTRICT OF THUNDER BAY; GEOPHYSICS; GLIMPCE; LAKE SUPERIOR; MICHIGAN; MINNESOTA; ONTARIO; SEISMIC; SEISMIC-SURVEYS; UNITED- STATES; WISCONSIN;

---, 1992, The Midcontinent rift in the Lake Superior region with emphasis on its geodynamic evolution: Tectonophysics, v. 213, p. 41-48. EVOLUTION; LAKE SUPERIOR; PROTEROZOIC;

---, 1992, Process rates during midcontinent rifting: Clues to the origin of the Midcontinent Rift System [abs.]: 38th Annual Institute on Lake Superior Geology, Hurley, WI, v. 38, p. 17-19. CANADA; MICHIGAN; ONTARIO; ORIGIN; PORTAGE LAKE VOLCANICS; RATE; RIFTING; SEDIMENTATION; UNITED-STATES; UPPER-PENINSULA;

---, 1994, Closing of the Midcontinent Rift - A far-field effect of Grenvillian compression: Geology, v. 22, p. 155-158. COMPRESSION- TECTONICS; GRENVILLE; GRENVILLE PROVINCE; LAURENTIAN SUPERCONTINENT; MODEL; PLATE TECTONICS; RIFTING; STRUCTURAL-GEOLOGY; SUPERCONTINENT;

---, 1995, Summary of GLIMPCE geophysical investigations of the Midcontinent Rift System in the Lake Superior region [abs.], in Ojakangas, R. E., Dickas, A. B., and Green, J. C., eds., Basement Tectonics 10: Proceedings of the Tenth International Conference on Basement Tectonics: Netherlands, Kluwer Academic Publishers, v. 4, p. 7-10. BASALTS; CANADA; FLOOD BASALTS; GEOPHYSICS; GLIMPCE; LAKE SUPERIOR REGION; MOHO; ONTARIO; REFLECTION; REFRACTION; SEDIMENTARY-ROCKS; SEISMIC; SEISMIC LINE C; SEISMIC- SURVEYS; THICKNESS; UNITED-STATES; VOLCANIC ROCKS;

Cannon, W. F., Behrendt, M. L., Hutchinson, D., Green, A., Spencer, C., Milkereit, B., Morel, P., Davidson, A., and Teskey, D., 1987, A brief look at GLIMPCE [abs.]: 33rd Annual Institute on Lake Superior Geology, Wawa, ONT, v. 33, p. 15. CANADA; CRUST; GEOPHYSICS; GLIMPCE; GRENVILLE-FRONT; LAKE MICHIGAN; LAKE SUPERIOR; LAKE-HURON; MANTLE; ONTARIO; REFLECTION; SEISMIC; SEISMIC- SURVEYS; UNITED-STATES;

Cannon, W. F., Cameron, C. C., Grosz, A. E., Dunn, M. L., Jr., Gazdik, G. C., and Hill, J. J., 1981, Mineral resources of the Rainbow Lake Wilderness Area and the Flynn Lake Wilderness Study Area, Bayfield County, Wisconsin:, U. S. Geological Survey, Bulletin 1511, 19 p. BAYFIELD- COUNTY; CENOZOIC; CLASTIC-SEDIMENTS; COPPER; COPPER-ORES; DRIFT; ECONOMIC GEOLOGY; ECONOMIC-EVALUATION; FLYNN LAKE WILDERNESS AREA; GRAVEL-DEPOSITS; METAL-ORES; MINERAL-RESOURCES; ORGANIC-RESIDUES; PEAT; PHANEROZOIC; PLEISTOCENE; QUATERNARY; RAINBOW LAKE WILDERNESS AREA; SEDIMENTARY-ROCKS; SEDIMENTS; UNITED-STATES; WISCONSIN;

Cannon, W. F., and Davidson, D. M., Jr., 1982, Bedrock geologic map of the Lake Superior region, in Wold, R. J., and Hinze, W. J., eds., Geology and tectonics of the Lake Superior basin:, Geological Society of America, Memoir 156, p. 5-14. BEDROCK; LAKE SUPERIOR; MAP; REGIONAL; UNITED-STATES;

Cannon, W. F., and Dunn, M. L., 1984, Rainbow Lake Wilderness and Flynn Lake Wilderness Study Area, Wisconsin, in Marsh, S. P., Kropschot, S. J., and Dickinson, R. G., eds., Wilderness mineral potential; assessment of mineral-resource potential in U.S. Forest Service lands studied 1964- 1984:, U. S. Geological Survey, Professional Paper 1300, p. 1117-1119. BAYFIELD-COUNTY; COPPER; COPPER-ORES; ECONOMIC GEOLOGY; ECONOMIC-EVALUATION; FLYNN LAKE WILDERNESS STUDY AREA; MINERAL-RESOURCES; ORGANIC-RESIDUES; PEAT; POSSIBILITIES; RAINBOW LAKE WILDERNESS AREA; SEDIMENTARY-ROCKS; SEDIMENTS; UNITED-STATES; WILDERNESS- AREAS; WISCONSIN;

Cannon, W. F., and Green, A. G., 1989, A model for the development of the Midcontinent Rift in the Lake Superior region [abs.]: Eos (American Geophysical Union Transactions), v. 70, no. 15, p. 272. CANADA; COMPRESSION-TECTONICS; EXTENSIONAL TECTONICS; GEOPHYSICS; GLIMPCE; LAKE SUPERIOR; ONTARIO; ORIGIN; RIFTING; SEDIMENT LOADING; SEISMIC; SEISMIC-SURVEYS; TECTONICS; THERMAL SUBSIDENCE; UNITED-STATES; VOLCANISM;

Cannon, W. F., Green, A. G., Hutchinson, D. R., and Behrendt, J. C., 1988, Variations in structural style of the Midcontinent Rift beneath Lake Superior [abs.]: 34th Annual Institute on Lake Superior Geology, Marquette, MI, v. 34, p. 18. BOUGUER-ANOMALIES; CANADA; DISTRICT OF THUNDER BAY; FAULTS; GEOPHYSICS; GLIMPCE; GRABENS; GRAVITY; GRAVITY-ANOMALIES; ISLE ROYALE; KEWEENAW COUNTY; LAKE SUPERIOR; MICHIGAN; ONTARIO; ONTONAGON-COUNTY; PLATE TECTONICS; REFLECTION; RIFT BASIN; RIFTING; SEISMIC; SEISMIC-SURVEYS; STRUCTURAL-GEOLOGY; THIEL FAULT; UNITED-STATES; UPPER-PENINSULA; VOLCANIC ROCKS;

Cannon, W. F., Green, A. G., Hutchinson, D. R., Lee, M., Milkereit, B., Behrendt, J. C., Halls, H. C., Green, J. C., Dickas, A. B., Morey, G. B., Sutcliffe, R., and Spencer, C., 1989, The North American Midcontinent rift beneath Lake Superior from GLIMPCE seismic reflection profiling: Tectonics, v. 8, no. 2, p. 305-332. ANIMIKIE GROUP; ARCHEAN; ASTHENOSPHERE; BASALT; BAYFIELD-GROUP; CANADA; COMPRESSION-TECTONICS; CRUST; CRUSTAL SAG; DIKES; DISTRICT OF ALGOMA; DISTRICT OF THUNDER BAY; DOUGLAS- FAULT; DULUTH COMPLEX; EVOLUTION; EXTENSIONAL TECTONICS; FAULTS; GEOPHYSICS; GLIMPCE; GRABENS; GRAVITY; GRENVILLE OROGENY; IRON-FORMATION; ISLE ROYALE FAULT; JACOBSVILLE-SANDSTONE; KEWEENAW FAULT; KEWEENAWAN-SUPERGROUP; LAKE SUPERIOR; LAYERED INTRUSION; LOWER-PROTEROZOIC; MAMAINSE POINT FORMATION; MANTLE; MICHIGAN; MINNESOTA; MODEL; MOHO; NORMAL POLARITY; NORMAL-FAULTS; NORTH SHORE VOLCANIC GROUP; ONTARIO; ORONTO-GROUP; OSLER GROUP; PALEOMAGNETISM; PORTAGE LAKE VOLCANICS; PROFILES; REFLECTION; REGIONAL; REVERSE POLARITY; REVERSE-FAULTS; SANDSTONE; SEDIMENTARY-ROCKS; SEDIMENTS; SEISMIC; SEISMIC-

27 SURVEYS; STRUCTURAL-GEOLOGY; TECTONICS; THERMAL COLLAPSE; THICKNESS; THIEL FAULT; UNCONFORMITY; UNITED- STATES; UPPER-PENINSULA; VOLCANIC ROCKS;

Cannon, W. F., and Hinze, W. J., 1992, Speculations on the origin of the North American Midcontinent rift: Tectonophysics, v. 23, p. 49-55. EVOLUTION; ORIGIN; PROTEROZOIC;

Cannon, W. F., Lee, M. W., Hinze, W. J., and Green, A. G., 1989, Seismic image of Precambrian crust beneath northern Lake Michigan [abs.]: Eos (American Geophysical Union Transactions), v. 70, no. 15, p. 277. CRUST; GEOPHYSICS; GLIMPCE; LAKE MICHIGAN; MICHIGAN; SEISMIC; SEISMIC LINE H; SEISMIC-SURVEYS; UNITED-STATES;

Cannon, W. F., Lee, M. W., Hinze, W. J., Schulz, K. J., and Green, A. G., 1991, Deep crustal structure of the Precambrian basement beneath northern Lake Michigan, midcontinent North America: Geology, v. 19, p. 207-210. ARCHEAN; BASALT; BASEMENT; CRUST; GEOPHYSICS; GRAVITY-ANOMALIES; LAKE MICHIGAN; LOWER PENINSULA; LOWER-PROTEROZOIC; MARSHFIELD TERRANE; MICHIGAN; MOHO; PEMBINE-WAUSAU TERRANE; PENOKEAN; PENOKEAN OROGENY; PLATE TECTONICS; REFLECTION; SEISMIC; SEISMIC- SURVEYS; SUBDUCTION; THICKNESS; UNITED-STATES; WISCONSIN;

Cannon, W. F., and Nicholson, S. W., 1992, Revisions of stratigraphic nomenclature within the Keweenawan Supergroup of northern Michigan:, U. S. Geological Survey, Bulletin 1970A, 21 p. BARAGA COUNTY; HOUGHTON-COUNTY; KEWEENAW COUNTY; KEWEENAW PENINSULA; MICHIGAN; ONTONAGON-COUNTY; SEDIMENTARY-ROCKS; SEDIMENTS; STRATIGRAPHY; UNITED-STATES; UPPER- PENINSULA;

---, in press, The Midcontinent Rift System:, U. S. Geological Survey, Bulletin 1904, MICHIGAN; UNITED-STATES; UPPER-PENINSULA; WISCONSIN;

Cannon, W. F., Nicholson, S. W., Hedgman, C. A., Woodruff, L. G., and Schulz, K. J., 1992, Geology of Keweenawan Supergroup rocks near the Porcupine Mountains, Ontonagon and Gogebic Counties, Michigan, in Bornhorst, T. J., ed., Keweenawan copper deposits of western upper Michigan:, Society of Economic Geologists, v. 13, p. 163-197. AREAL-GEOLOGY; CLASTIC-ROCKS; GEOLOGY; GOGEBIC-COUNTY; IGNEOUS- ROCKS; KEWEENAW PENINSULA; KEWEENAWAN-SUPERGROUP; MICHIGAN; ONTONAGON-COUNTY; PORCUPINE MOUNTAINS; SEDIMENTARY-ROCKS; SEDIMENTS; UNITED-STATES; UPPER-PENINSULA;

Cannon, W. F., Nicholson, S. W., Zartman, R. E., Peterman, Z. E., and Davis, D. W., 1993, The Kallander Creek Volcanics--A remnant of a Keweenawan central centered near Mellen, Wisconsin [abs.]: 39th Annual Institute on Lake Superior Geology, Eveleth, MN, v. 39, p. 20-21. AGE DATING; CANADA; COPPER CITY FLOW; COPPER HARBOR CONGLOMERATE; DEPOSITION; DISTRICT OF THUNDER BAY; EROSION; FAULTS; FREDA-SANDSTONE; GEOCHRONOLOGY; KALLANDER CREEK VOLCANICS; KEWEENAW PENINSULA; MELLEN COMPLEX; MICHIGAN; MINERAL LAKE INTRUSION; NONESUCH SHALE; ONTARIO; ORONTO-GROUP; OSLER GROUP; PORTAGE LAKE VOLCANICS; SANDSTONE; SIEMENS CREEK VOLCANICS; STRUCTURAL-GEOLOGY; UNITED-STATES; UPPER- PENINSULA; URANIUM-LEAD; VOLCANIC ROCKS; WISCONSIN; ZIRCON;

Cannon, W. F., Peterman, Z. E., and Sims, P. K., 1990, Structural and isotopic evidence for Middle Proterozoic thrust faulting of Archean and Early Proterozoic rocks near , Michigan and Wisconsin [abs.]: 36th Annual Institute on Lake Superior Geology, Thunder Bay, ONT, v. 36, p. 11-13. AGE DATING; FAULTS; GEOCHRONOLOGY; GOGEBIC IRON RANGE; MICHIGAN; PELTON CREEK FAULT; STRUCTURAL- GEOLOGY; ; UNITED-STATES; WISCONSIN;

---, 1993, Crustal-scale thrusting and origin of the Montreal River monocline--35 km-thick cross section of the Midcontinent rift in northern Michigan and Wisconsin: Tectonics, v. 12, no. 3, p. 728-744. AGE DATING; ARCHEAN; BIOTITE; COPPER HARBOR CONGLOMERATE; CRUST; DIABASE; DIKES; FAULTS; FREDA-SANDSTONE; GEOCHRONOLOGY; KEWEENAW FAULT; KEWEENAWAN-SUPERGROUP; LOWER- PROTEROZOIC; MARENISCO FAULT; MARQUETTE RANGE SUPERGROUP; MICHIGAN; MINERAL AGES; MONOCLINE; MONTREAL RIVER MONOCLINE; MONTREAL-RIVER; NONESUCH SHALE; ORIGIN; ORONTO-GROUP; PELTON CREEK FAULT; RUBIDIUM- STRONTIUM; SANDSTONE; SEDIMENTARY-ROCKS; STRATIGRAPHY; STRUCTURAL-GEOLOGY; SUPERIOR PROVINCE; THRUST FAULT; UNITED-STATES; UPPER-PENINSULA; WISCONSIN;

Cannon, W. F., Woodruff, L. G., and Daines, M. J., 1992, A thermal lag model for native copper mineralization in the Midcontinent Rift System of Lake Superior [abs.]: Geological Society of America Abstracts with Programs, v. 24, no. 7, p. A61. ALTERATION; FLOOD BASALTS; FLUIDS; GEOTHERMAL; GEOTHERMS; HYDROTHERMAL; INTERFLOW SEDIMENTS; MICHIGAN; MINERALIZATION; MODEL; NATIVE COPPER; RIFTING; THERMAL; UNITED-STATES; UPPER-PENINSULA;

Card, K. D., Church, W. R., Franklin, J. M., Frarey, M. I., Robertson, J. A., West, G. F., and Young, G. M., 1972, The Southern Province, in Variations in tectonic styles in Canada:, Geological Association of Canada, Special Paper 11, p. 335-380. BLACK STURGEON FAULT; CANADA; FAILED ARM; GRABENS; ONTARIO; PLATE TECTONICS; SEDIMENTATION; SIBLEY GROUP; STRUCTURAL-GEOLOGY; SUPERIOR PROVINCE; TRIPLE JUNCTIONS;

Card, K. D., Church, W. R., Franklin, J. M., Frarey, M. J., Roberston, J. A., West, G. F., and Young, G. M., 1972, The Southern Province, in Price, R. A., and Douglas, R. J. W., eds., Variations in tectonic style in Canada: Toronto, The Geological Association of Canada, Special Paper 11, p. 335- 380. ALKALIC COMPLEX; ALKALINE; ARCHEAN; CANADA; CANADIAN SHIELD; CARBONATITE; CRYSTAL LAKE INTRUSION; DEFORMATION; DIKE-SWARMS; DISTRICT OF ALGOMA; DISTRICT OF SUDBURY; DISTRICT OF THUNDER BAY; GREAT LAKES NICKEL; GREENSTONE BELTS; GUNFLINT FORMATION; HURONIAN; IGNEOUS-ROCKS; JACOBSVILLE-SANDSTONE; LOWER- PROTEROZOIC; METAMORPHIC-ROCKS; METAMORPHISM; MINNESOTA; ONTARIO; PARDEE TOWNSHIP; PENOKEAN; PENOKEAN OROGENY; ROVE FORMATION; SEDIMENTARY-ROCKS; SIBLEY GROUP; STRUCTURAL-GEOLOGY; SUDBURY IGNEOUS COMPLEX; UNITED-STATES; VOLCANIC ROCKS;

28 Card, K. D., Sanford, B. V., and Davidson, A., 1995, Bedrock geology, Lake Superior, Sudbury, Ontario-USA: Geological Survey of Canada, The National Earth Science Series: Geology Atlas, Map NL-16/17-G, scale 1:1,000,000. ANIMIKIE; ARCHEAN; CANADA; DIKE-SWARMS; DIKES; DISTRICT OF ALGOMA; DISTRICT OF SUDBURY; DISTRICT OF THUNDER BAY; DULUTH COMPLEX; GUNFLINT FORMATION; LAKE SUPERIOR; LAYERED INTRUSION; LOWER-PROTEROZOIC; MAPS; METAMORPHISM; MICHIGAN; MINNESOTA; ONTARIO; ROVE FORMATION; SIBLEY GROUP; SUDBURY IGNEOUS COMPLEX; UNITED-STATES; UPPER-PENINSULA; WISCONSIN;

Carlson, C. G., 1917, The occurrence and genesis of the disseminated copper ores of the Nonesuch and sandstone [B.A. Thesis]: University of Wisconsin, Madison, 31 p. COPPER; DISSEMINATED ORE; GENESIS; MICHIGAN; NATIVE COPPER; NONESUCH SHALE; ORIGIN; ORONTO-GROUP; UNITED-STATES; UPPER-PENINSULA; WISCONSIN;

---, 1932, Bitumen in Nonesuch formation of Keweenawan series of northern Michigan: American Association of Petroleum Geologists Bulletin, v. 16, no. 8, p. 737-740. BITUMENS; ECONOMIC GEOLOGY; HYDROCARBONS; MICHIGAN; NONESUCH SHALE; ORGANIC GEOCHEMISTRY; ORONTO-GROUP; SEDIMENTARY-ROCKS; SEDIMENTS; SHALE; UNITED-STATES; UPPER-PENINSULA;

Carlson, D. R., 1971, Gravity and bedrock geology study of east-central Minnesota [M.S. Thesis]: Northern Illinois University, De Kalb, 31 p. BEDROCK; DOUGLAS-FAULT; GEOLOGY; GEOPHYSICS; GRAVITY; GRAVITY-SURVEYS; MINNESOTA; PINE FAULT; STRUCTURAL- GEOLOGY; UNITED-STATES;

Carlson, M. P., 1988, Interpretation of the geometry of the Midcontinent Rift System [abs.]: Geological Society of America Abstracts with Programs, v. 20, no. 7, p. A205. NEBRASKA; STRUCTURAL-GEOLOGY; UNITED-STATES;

---, 1989, The influence of the Midcontinent Rift System on the occurrence of oil in the Forest City Basin [abs.]: American Association of Petroleum Geologists Bulletin, v. 73, p. 340. FOREST CITY BASIN; NEBRASKA; OIL; PETROLEUM; STRUCTURAL-GEOLOGY; UNITED-STATES;

---, 1995, Tectonic implications and influence of the Midcontinent Rift System in Nebraska and adjoining areas [abs.], in Ojakangas, R. W., Dickas, A. B., and Green, J. C., eds., Basement Tectonics 10: Proceedings of the Tenth International Conference on Basement Tectonics: Netherlands, Kluwer Academic Publishers, v. 4, p. 61-64. AEROMAGNETICS; CAMBRIAN; CRETACEOUS; EROSION; FAULTS; GEOPHYSICS; GRAVITY; HORSTS; MESOZOIC; NEBRASKA; PALEOZOIC; PHANEROZOIC; SEDIMENTARY-ROCKS; STRUCTURAL-GEOLOGY; TECTONICS; TRANSFORM FAULTS; UNITED-STATES; VOLCANIC ROCKS;

Carlson, R. W., Ellam, R. M., Hart, W. K., and Klewin, K. W., 1992, The role of lithosphere in continental genesis [abs.]: Eos (American Geophysical Union Transactions), v. 73, no. 14, p. 329. AFRICA; CENOZOIC; CONTAMINATION; FLOOD BASALTS; GENESIS; KAROO; LITHOSPHERE; OSMIUM ISOTOPES; RHENIUM-OSMIUM; SOUTH AFRICA; THOLEIITE; UNITED-STATES;

Carpenter, R. H., 1963, Some vein-wall rock relationships in the White Pine Mine, Ontonagon Co., Michigan: Economic Geology, v. 58, p. 643-666. COPPER; MICHIGAN; MICHIGAN COPPER DISTRICT; MINE; MINERALIZATION; NONESUCH SHALE; ONTONAGON-COUNTY; ORONTO-GROUP; UNITED-STATES; UPPER-PENINSULA; VEINS; WALLROCK; WHITE PINE MINE;

Carriker, N., and Eisenreich, S., 1978, Column leaching of trace metals from Duluth gabbro material: Minneapolis, MN, Minnesota Environmental Quality Board, Report to Copper-Nickel Task Force, 15 p. COLUMN LEACHING; COPPER; DULUTH COMPLEX; ENVIRONMENTAL; EXPERIMENTAL STUDIES; GEOCHEMISTRY; LAYERED INTRUSION; LEACHATES; LEACHING; LEACHING SOLUTIONS; MINNESOTA; NICKEL; REGIONAL COPPER-NICKEL STUDY; ST. LOUIS COUNTY; UNITED-STATES; WASTE ROCK; WATER CHEMISTRY;

Carter, W. E. H., 1904, The mines of Ontario: Journal of the Canadian Mining Institute, v. 7, p. 114-167. CANADA; COPPER; DISTRICT OF ALGOMA; ECONOMIC GEOLOGY; MICHIPICOTEN ISLAND; MINING; NATIVE COPPER; ONTARIO; QUEBEC MINE;

Cascaddan, A. E., 1969, Petrology and petrofabrics of the Jacobsville sandstone (Precambrian or Cambrian) in the vicinity of the Keweenaw fault (northern Michigan) [M.S. Thesis]: Michigan State University, East Lansing CAMBRIAN; CLASTIC-ROCKS; FABRIC; FAULT; JACOBSVILLE-SANDSTONE; KEWEENAW FAULT; MICHIGAN; PALEOZOIC; PETROFABRICS; PETROLOGY; PHANEROZOIC; SANDSTONE; SEDIMENTARY-PETROLOGY; SEDIMENTARY-ROCKS; SEDIMENTS; STRUCTURAL-GEOLOGY; UNITED-STATES; UPPER-PENINSULA;

Case, J. E., and Gair, J. E., 1965, Aeromagnetic map of parts of Marquette, Dickinson, Baraga, Alger, and Schoolcraft Counties, Michigan, and its geologic interpretation: U. S. Geological Survey, Geophysical Investigation, Map GP-467. AEROMAGNETIC SURVEY; AEROMAGNETICS; ALGER-COUNTY; ANIMIKIE; ARCHEAN; BARAGA COUNTY; DICKINSON COUNTY; DIKES; GEOLOGY; GEOPHYSICS; LOWER- PROTEROZOIC; MARQUETTE COUNTY; MICHIGAN; SCHOOLCRAFT COUNTY; UNITED-STATES; UPPER-PENINSULA;

Catacosinos, P. A., 1973, Origin and stratigraphic assessment of pre-Mt. Simon clastics (Precambrian) of Michigan Basin: American Association of Petroleum Geologists Bulletin, v. 65, p. 1617-1620. CLASTICS; LOWER PENINSULA; MICHIGAN; MICHIGAN-BASIN; ORIGIN; SEDIMENTARY-ROCKS; SEDIMENTS; STRATIGRAPHY; UNITED-STATES;

---, 1980, Stratigraphic relationships of the pre-Mt. Simon clastics, Lower Michigan [abs.]: Eos (American Geophysical Union Transactions), v. 61, no. 48, p. 1195-1196. BEAVER-ISLAND; CHARLEVOIX-COUNTY; CLASTIC-ROCKS; FREDA-SANDSTONE; GRATIOT-COUNTY; JACOBSVILLE-SANDSTONE; MICHIGAN; MICHIGAN-BASIN; MODELS; ORONTO-GROUP; SANDSTONE; SEDIMENTARY- PETROLOGY; SEDIMENTARY-ROCKS; SEDIMENTS; STRATIGRAPHY; TURBIDITE; UNITED-STATES;

---, 1981, Origin and stratigraphic assessment of pre-Mt. Simon clastics (Precambrian) of Michigan Basin: American Association of Petroleum Geologists Bulletin, v. 65, no. 9, p. 1617-1620. CLASTIC-ROCKS; CORES; GEOPHYSICS; LITHOSTRATIGRAPHY; LOWER PENINSULA;

29 MICHIGAN; MICHIGAN-BASIN; PALEOMAGNETISM; POTASSIUM-ARGON; RATIOS; SEDIMENTARY-ROCKS; SEDIMENTS; SR/RB; STRATIGRAPHY; UNITED-STATES;

Cavaleri, M., Mossler, J. H., and Webers, G. F., 1987, The geology of the St. Croix River Valley, in Balaban, N. H., ed., Field trip guidebook for the Upper Mississippi valley, Minnesota, Iowa, and Wisconsin:, Minnesota Geological Survey, Guidebook Series, No. 15, p. 23-43. CHENGWATANA VOLCANIC GROUP; GEOCHEMISTRY; GEOLOGY; GUIDEBOOK; OLIVINE NORMATIVE; ST. CROIX RIVER; ST. CROIX RIVER VALLEY; UNITED-STATES; VOLCANIC ROCKS; WISCONSIN;

Cawthorn, R. G., 1982, An origin of small-scale fluctuations in orthopyroxene composition in the lower and critical zones of the Bushveld Complex, South Africa: Chemical Geology, v. 36, p. 227-236. AFRICA; BUSHVELD COMPLEX; CRITICAL ZONE; DULUTH COMPLEX; LAYERED INTRUSION; LOWER ZONE; LOWER-PROTEROZOIC; MINERAL CHEMISTRY; MINNESOTA; OPX; ORTHOPYROXENE; PYROXENE; SOUTH AFRICA; UNITED-STATES;

Chalokwu, C. I., 1985, A geochemical, petrological and compositional study of the Partridge River intrusion, Duluth Complex, Minnesota [Ph.D. Dissertation]: Miami University, Oxford, Ohio, 230 p. B1-221; BABBITT; DRILL HOLE; DULUTH COMPLEX; GEOCHEMISTRY; LAYERED INTRUSION; MINERAL CHEMISTRY; MINERAL DEPOSIT; MINNAMAX; MINNESOTA; PARTRIDGE RIVER INTRUSION; PETROLOGY; ST. LOUIS COUNTY; TIGER BOY; TRACE ELEMENT ANALYSES; UNITED-STATES; WHOLE ROCK ANALYSES;

Chalokwu, C. I., Ariskin, A. A., and Barmina, G. S., 1991, Simulation of equilibrium crystallization of melts corresponding to natural compositions: A clue to the parental magma to the Partridge River intrusion, Duluth Complex, Minnesota [abs.]: Geological Society of America Abstracts with Programs, v. 23, p. A270-A271. DULUTH COMPLEX; IGNEOUS PROCESS; LAYERED INTRUSION; MINNESOTA; PARENTAL MAGMA; PARTRIDGE RIVER INTRUSION; UNITED-STATES;

Chalokwu, C. I., and Grant, N. K., 1983, The importance of trapped liquid abundances to the re-equilibration of primary mineral compositions in the Partridge River troctolite, Duluth Complex, Minnesota [abs.]: Geological Society of America Abstracts with Programs, v. 15, p. 541. B1-221; BABBITT; DRILL HOLE; DULUTH COMPLEX; IGNEOUS PROCESS; LAYERED INTRUSION; MINERAL CHEMISTRY; MINERAL DEPOSIT; MINNAMAX; MINNESOTA; PARTRIDGE RIVER; PARTRIDGE RIVER INTRUSION; ST. LOUIS COUNTY; TIGER BOY; UNITED-STATES;

---, 1984, Modal and density variation in the Partridge River intrusion (PRI) of the Duluth Complex, and an estimate of the trapped liquid density [abs.]: Eos (American Geophysical Union Transactions), v. 65, p. 294. B1-221; BABBITT; DENSITY; DRILL HOLE; DULUTH COMPLEX; IGNEOUS PROCESS; LAYERED INTRUSION; MINERAL DEPOSIT; MINNAMAX; MINNESOTA; MODAL; PARTRIDGE RIVER INTRUSION; ST. LOUIS COUNTY; TIGER BOY; UNITED-STATES;

---, 1985, The geochemistry of the Partridge River intrusion, Duluth Complex, Minnesota [abs.]: Geological Society of America Abstracts with Programs, v. 17, p. 83. B1-221; BABBITT; DRILL HOLE; DULUTH COMPLEX; GEOCHEMISTRY; LAYERED INTRUSION; MINERAL DEPOSIT; MINNAMAX; MINNESOTA; PARTRIDGE RIVER INTRUSION; ST. LOUIS COUNTY; TIGER BOY; UNITED-STATES;

---, 1986, The composition and petrologic significance of the trapped intercumulus liquid in the Partridge River intrusion [abs.]: Geological Society of America Abstracts with Programs, v. 18, p. 561. B1-221; BABBITT; DRILL HOLE; DULUTH COMPLEX; GEOCHEMISTRY; IGNEOUS PROCESS; INTERCUMULUS; LAYERED INTRUSION; MINERAL DEPOSIT; MINNAMAX; MINNESOTA; PARTRIDGE RIVER INTRUSION; PETROLOGY; ST. LOUIS COUNTY; TIGER BOY; UNITED-STATES;

---, 1987, Reequilibration of olivine with trapped liquid in the Duluth Complex, Minnesota: Geology, v. 15, p. 71-74. B1-221; BABBITT; DRILL HOLE; DULUTH COMPLEX; GEOCHEMISTRY; IGNEOUS PROCESS; LAYERED INTRUSION; MINERAL DEPOSIT; MINNAMAX; MINNESOTA; OLIVINE; PARTRIDGE RIVER INTRUSION; PETROLOGY; ST. LOUIS COUNTY; TIGER BOY; UNITED-STATES;

---, 1987, Reply on "Reequilibration of olivine with trapped liquid in the Duluth Complex: Geology, v. 15, p. 1080. B1-221; BABBITT; DRILL HOLE; DULUTH COMPLEX; GEOCHEMISTRY; IGNEOUS-PROCESSES; LAYERED INTRUSION; MINERAL CHEMISTRY; MINERAL DEPOSIT; MINNAMAX; MINNESOTA; ORIGIN; PARTRIDGE RIVER INTRUSION; ST. LOUIS COUNTY; TIGER BOY; UNITED-STATES;

---, 1990, Petrology of the Partridge River intrusion, Duluth Complex, Minnesota: I. Relationship between mineral compositions, density and trapped liquid abundance: Journal of Petrology, v. 31, p. 265-293. B1-221; BABBITT; DENSITY; DRILL HOLE; DULUTH COMPLEX; IGNEOUS PROCESS; LAYERED INTRUSION; MINERAL CHEMISTRY; MINERAL DEPOSIT; MINNAMAX; MINNESOTA; PARTRIDGE RIVER INTRUSION; PETROLOGY; ST. LOUIS COUNTY; TIGER BOY; UNITED-STATES;

Chalokwu, C. I., Grant, N. K., Ariskin, A. A., and Barmina, G. S., 1993, Simulation of primary phase relations and mineral compositions in the Partridge River intrusion, Duluth Complex, Minnesota: implications for the parent magma composition: Contributions to Mineralogy and Petrology, v. 114, p. 539-549. B1-221; BABBITT; BASE METAL ANALYSES; DRILL HOLE; DULUTH COMPLEX; EQUILIBRIUM CRYSTALLIZATION; GEOCHEMISTRY; LAYERED INTRUSION; MINERAL CHEMISTRY; MINERAL DEPOSIT; MINNAMAX; MINNESOTA; MODEL; PARENT MAGMA; PARTRIDGE RIVER INTRUSION; RARE-EARTH ELEMENTS; REE; ST. LOUIS COUNTY; TIGER BOY; TRACE ELEMENT ANALYSES; UNITED-STATES; WHOLE ROCK ANALYSES;

Chalokwu, C. I., and Miller, J. D., Jr., 1992, Differentiation of Keweenawan Silver Bay intrusions, Beaver Bay Complex, northeastern Minnesota [abs.]: Geological Society of America Abstracts with Programs, v. 24, no. 7, p. A86. BEAVER BAY COMPLEX; DULUTH COMPLEX; IGNEOUS PROCESS; LAKE COUNTY; LAYERED INTRUSION; MINNESOTA; PETROLOGY; SILVER BAY INTRUSIONS; UNITED- STATES;

Chalokwu, C. I., and Yau, Y.-C., 1985, Hydroxyapophyllite in hornfels beneath the Duluth Complex, northeastern Minnesota: The Canadian Mineralogist, v. 23, p. 489-490. ANIMIKIE; ANIMIKIE GROUP; CONTACT METAMORPHISM; DULUTH COMPLEX; HORNFELS;

30 HYDROXYAPOPHYLLITE; LAYERED INTRUSION; LOWER-PROTEROZOIC; METAMORPHISM; MINNESOTA; SEDIMENTARY-ROCKS; UNITED-STATES; VIRGINIA FORMATION;

Chamberlain, T. C., 1883, The copper-bearing series of Lake Superior: Science, v. 1, p. 453-455. COPPER; DOUGLAS-COUNTY; FAULTS; KETTLE RIVER; KEWEENAW POINT; LAKE SUPERIOR; MICHIGAN; MINERALIZATION; MINNESOTA; POTSDAM SANDSTONE; SANDSTONE; SEDIMENTARY-ROCKS; ST. CROIX RIVER; STRATIGRAPHY; STRUCTURAL-GEOLOGY; UNCONFORMITY; UNITED- STATES; UPPER-PENINSULA; WISCONSIN;

Chamberlin, T. C., 1883, The copper-bearing series of Lake Superior: Science, v. 1, p. 453-455. COPPER; LAKE SUPERIOR; MICHIGAN; MINERALIZATION; UNITED-STATES; UPPER-PENINSULA; WISCONSIN;

Chan, S. S. M., Thomas, H. E., and Bada, N., 1975, Air injection and hot-film flow logging for evaluation of roof cracks in White Pine Mine: American Institute of Mining Engineers Transactions, v. 256, p. 131-137. AIR-INJECTION; COPPER; CRACKS; ECONOMIC GEOLOGY; EXPERIMENTAL STUDIES; HOT FILM FLOW LOGGING; MICHIGAN; MICHIGAN COPPER DISTRICT; MINE; MINING-GEOLOGY; MINING-METHODS; NONESUCH SHALE; ONTONAGON-COUNTY; ORE-DEPOSITS; ORONTO-GROUP; SEDIMENTARY-ROCKS; SEDIMENTS; TECHNOLOGY; UNITED-STATES; UPPER-PENINSULA; WHITE PINE MINE;

Chan, W. K., and Hajnal, Z., 1989, Some features of the Midcontinent Rift form high density refraction signals [abs.]: Eos (American Geophysical Union Transactions), v. 70, no. 15, p. 274. CANADA; CRUST; FAULTS; GEOPHYSICS; GLIMPCE; LAKE SUPERIOR; MANTLE; MODELLING; ONTARIO; REFRACTION; SEISMIC; SEISMIC LINE A; SEISMIC-SURVEYS; STRUCTURAL-GEOLOGY; UNITED-STATES;

Chandler, V. W., 1980, Correlation of gravity and magnetic anomalies in east-central Minnesota and northwestern Wisconsin [abs.]: 26th Annual Institute on Lake Superior Geology, Eau Claire, WI, v. 26, p. 22. AITKIN COUNTY; ARCHEAN; BARRON COUNTY; BARRON-QUARTZITE; CLASTICS; GEOPHYSICS; GRAVITY; GRAVITY-ANOMALIES; IGNEOUS-ROCKS; KANABEC COUNTY; LOWER-PROTEROZOIC; MAGNETIC-ANOMALIES; MAGNETICS; MCGRATH GNEISS; METASEDIMENTS; METAVOLCANICS; MILLE LACS COUNTY; MINNESOTA; RUSH COUNTY; SAWYER COUNTY; SEDIMENTARY-ROCKS; UNITED-STATES; VOLCANIC ROCKS; WISCONSIN;

---, 1982, Aeromagnetic anomaly map of Minnesota: Minnesota Geological Survey, State Map Series, Map S-11, scale 1:3,168,000. AEROMAGNETICS; ANIMIKIE BASIN; ARCHEAN; DULUTH COMPLEX; GEOPHYSICS; GREENSTONE BELTS; LAYERED INTRUSION; MINNESOTA; PENOKEAN; UNITED-STATES;

---, 1982, Simple Bouguer gravity anomaly map of Minnesota: Minnesota Geological Survey, State Map Series, Map S-12, scale 1:3,168,000. ANIMIKIE BASIN; ARCHEAN; DULUTH COMPLEX; GEOPHYSICS; GRAVITY; GREENSTONE BELTS; LAYERED INTRUSION; MAP; MINNESOTA; PENOKEAN; UNITED-STATES;

---, 1982, Interpretation of high-resolution aeromagnetic data in northeastern Minnesota: 50th Annual Society of Exploration Geophysicists Meeting, Dallas, TX, p. 288-291. AEROMAGNETIC SURVEY; AEROMAGNETICS; ANIMIKIE; ANIMIKIE BASIN; GEOPHYSICS; MINNESOTA; UNITED-STATES;

---, 1983, Correlation of magnetic anomalies in east-central Minnesota and northwestern Wisconsin: Constraints on magnitude and direction of Keweenawan rifting: Geology, v. 11, p. 174-176. GEOPHYSICS; MAGNETIC; MINNESOTA; UNITED-STATES; WISCONSIN;

---, 1983, Paleomagnetic and magnetic anomaly studies of the northwestern Duluth Complex, Lake County, Minnesota [abs.]: 29th Annual Institute on Lake Superior Geology, Houghton, MI, v. 29, p. 7. AEROMAGNETICS; DULUTH COMPLEX; GEOPHYSICS; LAKE COUNTY; LAYERED INTRUSION; MAGNETICS; MINNESOTA; PALEOMAGNETISM; UNITED-STATES;

---, 1983, Aeromagnetic map of Minnesota, St. Louis County: Minnesota Geological Survey, Aeromagnetic Survey Map Series, Map A-2, scale 1:250,000. AEROMAGNETIC SURVEY; ANIMIKIE BASIN; ARCHEAN; DULUTH COMPLEX; GEOPHYSICS; GREENSTONE BELTS; LAYERED INTRUSION; LOWER-PROTEROZOIC; MAP; MESABI RANGE; MINNESOTA; ST. LOUIS COUNTY; UNITED-STATES; VERMILION DISTRICT;

---, 1983, Aeromagnetic map of Minnesota, Cook and Lake Counties: Minnesota Geological Survey, Aeromagnetic Map Series, Map A-1, scale 1:250,000. AEROMAGNETIC SURVEY; ANIMIKIE; COOK COUNTY; DULUTH COMPLEX; GEOPHYSICS; GUNFLINT IRON- FORMATION; LAKE COUNTY; LAYERED INTRUSION; LOWER-PROTEROZOIC; MAP; MINNESOTA; ROVE FORMATION; UNITED- STATES;

---, 1983, Aeromagnetic map of Minnesota, Carlton and Pine Counties: Minnesota Geological Survey, Aeromagnetic, Map A-3, scale 1:250,000. AEROMAGNETICS; ANIMIKIE; ANIMIKIE BASIN; CARLTON COUNTY; CARLTON COUNTY DIKES; LOWER-PROTEROZOIC; MAP; MINNESOTA; PINE-COUNTY; UNITED-STATES;

---, 1985, Interpretation of Precambrian geology in Minnesota using low-altitude, high-resolution aeromagnetic data, in Hinze, W. J., ed., The utility of gravity and magnetic anomaly maps: Tulsa, Oklahoma, Society of Exploration Geophysicists, p. 375-391. AEROMAGNETIC SURVEY; DULUTH COMPLEX; GEOLOGY; GEOPHYSICS; LAYERED INTRUSION; MINNESOTA; UNITED-STATES;

---, 1986, Gravity and magnetic anomalies and the structures of the central Duluth Complex [abs.]: 32nd Annual Institute on Lake Superior Geology, Wisconsin Rapids, WI, v. 32, p. 17-18. AEROMAGNETICS; DULUTH COMPLEX; GEOPHYSICS; GRAVITY; GRAVITY-ANOMALIES; LAYERED INTRUSION; MAGNETIC-ANOMALIES; MAGNETICS; MINNESOTA; STRUCTURAL-GEOLOGY; UNITED-STATES;

---, 1986, Interpretation of Precambrian geology in Minnesota using low-altitude, high-resolution aeromagnetic data, in Hinze, W. J., ed., The utility of regional gravity and magnetic anomaly maps: Tulsa, Oklahoma, Society of Exploration Geophysicists, p. 375-391. AEROMAGNETIC SURVEY;

31 AEROMAGNETICS; ANIMIKIE BASIN; ARCHEAN; BALD EAGLE INTRUSION; BIWABIK IRON-FORMATION; CARLTON COUNTY; CARLTON COUNTY DIKES; CUYUNA IRON RANGE; CUYUNA RANGE; DULUTH COMPLEX; GABBRO LAKE; GEOPHYSICS; GREAT LAKES TECTONIC ZONE; IRON-FORMATION; LAKE COUNTY; LAYERED INTRUSION; LOWER-PROTEROZOIC; MAGNETIC POLARITY; MAP; MINNESOTA; MODELLING; POLARITY; SAINT CROIX HORST; ST. LOUIS COUNTY; STRUCTURAL-GEOLOGY; UNITED-STATES; VERMILION DISTRICT; VERMILION GRANITIC COMPLEX;

---, 1990, Geologic interpretation of gravity and magnetic data over the central part of the Duluth Complex, northeastern Minnesota: Economic Geology, v. 85, p. 816-829. AEROMAGNETICS; DULUTH COMPLEX; GEOPHYSICS; GRAVITY; LAYERED INTRUSION; MAGNETICS; MINNESOTA; MODEL; MODELLING; UNITED-STATES;

---, 1991, Shaded-relief aeromagnetic anomaly maps of Minnesota: Minnesota Geological Survey, State Map Series, Map S-18, scale 1:1,000,000. AEROMAGNETIC ANOMALY; AEROMAGNETICS; ANIMIKIE BASIN; ARCHEAN; CUYUNA RANGE; DIKES; DULUTH COMPLEX; GEOPHYSICS; GREENSTONE BELTS; GUNFLINT FORMATION; LAYERED INTRUSION; LOWER-PROTEROZOIC; MAP; MESABI IRON RANGE; MINNESOTA; MINNESOTA RIVER VALLEY; MINNESOTA RIVER VALLEY SUBPROVINCE; NORTH SHORE VOLCANIC GROUP; PENOKEAN OROGEN; SHADED RELIEF; SILLS; UNITED-STATES; UPPER-PROTEROZOIC; VERMILION DISTRICT; VOLCANIC ROCKS;

---, 1992, Aeromagnetic anomaly map of Minnesota: Minnesota Geological Survey, State Map Series, Map S-17, scale 1:500,000. AEROMAGNETIC ANOMALY; AEROMAGNETIC SURVEY; AEROMAGNETICS; ARCHEAN; BEAVER BAY COMPLEX; DULUTH COMPLEX; GEOPHYSICS; GREENSTONE BELTS; LAYERED INTRUSION; LOWER-PROTEROZOIC; MINNESOTA; MINNESOTA RIVER VALLEY; MINNESOTA RIVER VALLEY SUBPROVINCE; NORTH SHORE VOLCANIC GROUP; PENOKEAN OROGEN; QUETICO SUBPROVINCE; UNITED-STATES; VERMILION DISTRICT; WABIGOON SUBPROVINCE;

---, 1993, Geophysical studies in the Duluth area, northeastern Minnesota [abs.]: 39th Annual Institute on Lake Superior Geology, Eveleth, MN, v. 39, p. 23-24. AEROMAGNETIC SURVEY; AEROMAGNETICS; ANORTHOSITE; DIABASE; DULUTH COMPLEX; DULUTH LAYERED SERIES; FAULTS; GEOPHYSICS; GRANOPHYRE; GRAVITY; LAYERED INTRUSION; MINNESOTA; MODEL; MODELLING; NORTH SHORE VOLCANIC GROUP; ST. LOUIS COUNTY; STRUCTURAL-GEOLOGY; UNITED-STATES;

---, 1995, Geophysical studies of reactivated Precambrian structures in Minnesota [abs.], in Ojakangas, R. W., Dickas, A. B., and Green, J. C., eds., Basement Tectonics 10: Proceedings of the Tenth International Conference on Basement Tectonics: Netherlands, Kluwer Academic Publishers, v. 4, p. 209-214. AEROMAGNETIC SURVEY; AEROMAGNETICS; ARCHEAN; BASEMENT; BELLE PLAINE FAULT; DIKES; DOUGLAS- FAULT; FAULTS; GEOPHYSICS; GRANITE-GREENSTONE TERRANE; GREAT LAKES TECTONIC ZONE; GREENSTONE BELTS; GROWTH-FAULTS; HASTINGS-FAULT; KENORA-KABETOGAMA DIKE SWARM; LINEAMENT; LOWER-PROTEROZOIC; MINNESOTA; PENOKEAN OROGENY; PHANEROZOIC; QUETICO FAULT; RAINY LAKE-SEINE RIVER FAULT; REACTIVATION; SAINT CROIX HORST; SEISMICITY; SHEAR ZONES; STRUCTURAL-GEOLOGY; UNITED-STATES;

Chandler, V. W., Boman, P. L., Hinze, W. J., and O'Hara, N. W., 1980, Long wavelength gravity and magnetic anomalies of the Lake Superior region [abs.]: 26th Annual Institute on Lake Superior Geology, Eau Claire, WI, v. 26, p. 42-43. CANADA; GEOPHYSICS; GRAVITY; GRAVITY- ANOMALIES; GREAT LAKES TECTONIC ZONE; GRENVILLE-FRONT; KAPUSKASING STRUCTURAL ZONE; KEWEENAW PENINSULA; LAKE MICHIGAN; LAKE SUPERIOR REGION; LAKE SUPERIOR SYNCLINE; LOWER PENINSULA; MAGNETIC-ANOMALIES; MAGNETICS; MICHIGAN; MICHIGAN-BASIN; BASIN; NIPIGON PLATE; ONTARIO; SAINT CROIX HORST; STRUCTURAL-GEOLOGY; SUPERIOR PROVINCE; UNITED-STATES; UPPER-PENINSULA; WISCONSIN; WISCONSIN ARCH;

Chandler, V. W., Bowman, P. L., Hinze, W. J., and O'Hara, N. W., 1982, Long-wavelength gravity and magnetic anomalies of the lake, in Wold, R. J., and Hinze, W. J., eds., Geology and tectonics of the Lake Superior Basin:, Geological Society of America, Memoir 156, p. 223-237. AEROMAGNETICS; GEOPHYSICS; GRAVITY; LAKE SUPERIOR; MAGNETIC; PROTEROZOIC;

Chandler, V. W., and Ferderer, R. J., 1984, Interpretation of aeromagnetic data over the southern Duluth Complex, northeastern Minnesota [abs.]: Eos (American Geophysical Union Transactions), v. 65, p. 199. AEROMAGNETICS; DULUTH COMPLEX; GEOPHYSICS; GRAVITY; LAYERED INTRUSION; MINNESOTA; ST. LOUIS COUNTY; UNITED-STATES;

---, 1988, Copper-nickel mineralization of the Duluth Complex, northeastern Minnesota: A gravity and magnetic perspective [abs.]: 34th Annual Institute on Lake Superior Geology, Marquette, MI, v. 34, p. 19-20. AEROMAGNETICS; ANIMIKIE; BABBITT; BIWABIK IRON-FORMATION; CONTACT METAMORPHISM; COPPER; DULUTH COMPLEX; FAULTS; GEOPHYSICS; GRAVITY; HORNFELS; IRON-FORMATION; LAKE COUNTY; LAYERED INTRUSION; LINEAMENT; LOWER-PROTEROZOIC; MAGNETICS; METAMORPHISM; MINERALIZATION; MINNAMAX; MINNESOTA; MODEL; NICKEL; PARTRIDGE RIVER INTRUSION; SOUTH KAWISHIWI INTRUSION; ST. LOUIS COUNTY; STRUCTURAL-GEOLOGY; SULFIDES; UNITED-STATES; VIRGINIA FORMATION;

---, 1989, Copper-nickel mineralization of the Duluth Complex, Minnesota-A gravity and magnetic perspective: Economic Geology, v. 84, p. 1690- 1696. AEROMAGNETIC SURVEY; AEROMAGNETICS; BABBITT; COPPER; DULUTH COMPLEX; GEOPHYSICS; GRAVITY; GRAVITY- ANOMALIES; GRAVITY-SURVEYS; LAKE COUNTY; LAYERED INTRUSION; LONGNOSE; MAGNETIC-ANOMALIES; MAGNETICS; MATURI; MINERAL DEPOSIT; MINERALIZATION; MINNAMAX; MINNESOTA; NICKEL; PARTRIDGE RIVER INTRUSION; SOUTH KAWISHIWI INTRUSION; SPRUCE ROAD; ST. LOUIS COUNTY; SULFIDES; UNITED-STATES; WETLEGS; WYMAN CREEK;

Chandler, V. W., Jirsa, M. A., and Ikola, R. J., 1985, Simple Bouguer gravity map of Minnesota, Hibbing sheet: Minnesota Geological Survey, Miscellaneous Map Series, Map M-56, scale 1:250,000. ANIMIKIE; ANIMIKIE BASIN; ARCHEAN; BOUGUER-ANOMALIES; DULUTH COMPLEX; GEOPHYSICS; GRAVITY; LAYERED INTRUSION; LOWER-PROTEROZOIC; MAP; MESABI RANGE; MINNESOTA; ST. LOUIS COUNTY; UNITED-STATES;

32 Chandler, V. W., McSwiggen, P. L., and Morey, G. B., 1986, Reinterpretation of the Midcontinent rift system in Minnesota and Wisconsin using gravity, magnetic and seismic data [abs.]: Geological Society of America Abstracts with Programs, v. 18, p. 562. GEOPHYSICS; GRAVITY; MAGNETIC; MINNESOTA; MODEL; MODELLING; SEISMIC; UNITED-STATES; WISCONSIN;

Chandler, V. W., McSwiggen, P. L., Morey, G. B., Hinze, W. J., and Anderson, R. R., 1989, Interpretation of seismic reflection, gravity, and magnetic data across middle Proterozoic Mid-Continent rift system; northwestern Wisconsin, eastern Minnesota, and central Iowa: American Association of Petroleum Geologists Bulletin, v. 73, no. 3, p. 261-275. GEOPHYSICAL-SURVEYS; GEOPHYSICS; GRAVITY-SURVEYS; IOWA; MAGNETIC-SURVEYS; MINNESOTA; REFLECTION; SEDIMENTARY-ROCKS; SEDIMENTS; SEISMIC-SURVEYS; STRUCTURAL- GEOLOGY; TECTONICS; UNITED-STATES; UPPER-WISCONSIN;

Chandler, V. W., and Miller, J. D., Jr., 1991, Description of map sheets for the central Duluth Complex shallow drilling project: Minnesota Geological Survey, Open-File Report 91-4, scale 1:100,000. BABBITT SE QUADRANGLE; CLOQUET LAKE QUADRANGLE; DOYLE LAKE QUADRANGLE; DULUTH COMPLEX; GEOLOGY; GREENWOOD LAKE EAST QUADRANGLE; GREENWOOD LAKE WEST QUADRANGLE; ISABELLA QUADRANGLE; ISABELLA STATION QUADRANGLE; LAYERED INTRUSION; MAP; MINNESOTA; MT. WEBBER QUADRANGLE; TOIMI QUADRANGLE; UNITED-STATES; WHYTE QUADRANGLE;

Chandler, V. W., and Morey, G. B., 1989, Seismic history of Minnesota and its geological significance: An update: Seismological Research Letters, v. 60, no. 2, p. 79-86. AEROMAGNETICS; ARCHEAN; CENOZOIC; COLORADO LINEAMENT; EARTHQUAKES; EPICENTERS; FAULTS; GEOPHYSICS; GREAT LAKES TECTONIC ZONE; HISTORY; MINNESOTA; PHANEROZOIC; QUATERNARY; RECENT; SEISMIC; STRUCTURAL-GEOLOGY; UNITED-STATES;

Chandler, V. W., Nordstrand, E., and Anderson, S., 1984, Shaded relief aeromagnetic anomaly map of northeastern and east-central Minnesota: Minnesota Geological Survey, Miscellaneous Map Series, Map M-53, scale 1:1,000,000. AEROMAGNETICS; ANIMIKIE BASIN; DULUTH COMPLEX; GEOPHYSICS; LAYERED INTRUSION; MINNESOTA; PENOKEAN; UNITED-STATES;

Chandler, V. W., and Schaap, B. D., 1991, Bouguer gravity anomaly map of Minnesota: Minnesota Geological Survey, State Map Series, Map S-16, scale 1:500,000. ANIMIKIE BASIN; ARCHEAN; BOUGUER-ANOMALIES; DULUTH COMPLEX; GEOPHYSICS; GRAVITY; GREENSTONE BELTS; LAYERED INTRUSION; MAP; MINNESOTA; MINNESOTA RIVER VALLEY; MINNESOTA RIVER VALLEY SUBPROVINCE; QUETICO SUBPROVINCE; REGIONAL; SUPERIOR PROVINCE; UNITED-STATES; VERMILION DISTRICT; WABIGOON SUBPROVINCE; WAWA SUBPROVINCE;

Chandler, V. W., and Southwick, D. L., 1990, Aeromagnetic Minnesota: Eos (American Geophysical Union Transactions), v. 71, no. 11, p. 329,331. AEROMAGNETICS; ARCHEAN; GEOPHYSICS; GREENSTONE BELTS; MINNESOTA; UNITED-STATES;

Chapman, F. S., 1974, A summary of copper-nickel mining and the canoe country: Naturalist, v. 25, no. 2/3, p. 40. COPPER; DULUTH COMPLEX; ENVIRONMENT; ENVIRONMENTAL; MINING; MINNESOTA; NICKEL; REGIONAL COPPER-NICKEL STUDY; SULFIDES; UNITED- STATES;

Chapman, S. S., 1976, Copper-nickel in Minnesota: Prospecting to studied preparedness: Naturalist, v. 27, no. 34, p. 1-7. BABBITT; DULUTH COMPLEX; ENVIRONMENT; ENVIRONMENTAL; INCO; LAKE COUNTY; MINERALIZATION; MINING; MINNAMAX; MINNESOTA; PARTRIDGE RIVER INTRUSION; PUBLIC; REGIONAL COPPER-NICKEL STUDY; ST. LOUIS COUNTY; SULFIDES; UNITED-STATES;

Chase, C. G., and Gilmer, T. H., 1973, Plate tectonics; The midcontinent gravity high: Earth and Planetary Science Letters, v. 21, p. 70-78. GEOPHYSICS; GRAVITY; IOWA; KANSAS; MICHIGAN; MINNESOTA; PLATE TECTONICS; UNITED-STATES; WISCONSIN;

Chaudhuri, S., 1972, Radiometric ages of Keweenawan intrusions and extrusions in Michigan and adjacent areas [abs.]: Geological Society of America Abstracts with Programs, v. 4, p. 470. AGE DATING; GEOCHRONOLOGY; INTRUSIVE; MICHIGAN; UNITED-STATES; VOLCANIC; WISCONSIN;

---, 1973, Isotopic ages of late Precambrian rocks of Michigan [abs.]: Geological Society of America Abstracts with Programs, v. 5, p. 307. AGE; AGE DATING; BEAR LAKE FELSITE; COPPER CITY RHYOLITE; FELSITE; FREDA; GEOCHRONOLOGY; HOUGHTON-COUNTY; IGNEOUS-ROCKS; KEWEENAW COUNTY; MICHIGAN; MT. HOUGHTON RHYOLITE; RHYOLITE; SEDIMENTARY-ROCKS; SEDIMENTS; UNITED-STATES; UPPER-PRECAMBRIAN;

---, 1975, Geochronology of upper and middle Keweenawan rocks of Michigan [abs.]: 21st Annual Institute on Lake Superior Geology, Marquette, MI, v. 21, p. 32. AGE DATING; BEAR LAKE FELSITE; BIOTITE; COPPER CITY RHYOLITE; FELSITE; FREDA-SANDSTONE; GEOCHRONOLOGY; IGNEOUS-ROCKS; MICHIGAN; MT. HOUGHTON RHYOLITE; MUSCOVITE; ORONTO-GROUP; RHYOLITE; RUBIDIUM-STRONTIUM; SANDSTONE; SEDIMENTARY-ROCKS; SEDIMENTS; UNITED-STATES; WHOLE ROCK ANALYSES;

---, 1976, Keweenawan geochronology: Rubidium-strontium and potassium-argon results [abs.]: Eos (American Geophysical Union Transactions), v. 57, p. 84. AGE DATING; GEOCHRONOLOGY; POTASSIUM-ARGON; RUBIDIUM-STRONTIUM;

Chaudhuri, S., and Brookins, D. G., 1969, Rb-Sr ages of late rocks of Wisconsin [abs.]: Geological Society of America Abstracts with Programs, v. 1, no. 7, p. 32. AGE DATING; GEOCHRONOLOGY; RUBIDIUM-STRONTIUM; UNITED-STATES; WISCONSIN;

Chaudhuri, S., Brookins, D. G., and Faure, G., 1969, Rubidium-strontium ages of Keweenawan intrusions near Mellen and South Range in Wisconsin [abs.]: 15th Annual Institute on Lake Superior Geology, Oshkosh, WI, v. 15, p. 10. AGE DATING; BIOTITE; DOUGLAS-COUNTY; GEOCHRONOLOGY; MELLEN COMPLEX; MELLEN GRANITE; MINERAL AGES; MINERAL LAKE INTRUSION; RUBIDIUM- STRONTIUM; SOUTH RANGE; STRONTIUM ISOTOPES; UNITED-STATES; WISCONSIN;

33 Chaudhuri, S., Brookins, D. G., and Fenton, M. D., 1971, Rubidium-strontium whole rock and mineral ages of the Coldwell, Ontario syenites [abs.]: Geological Society of America Abstracts with Programs, v. 3, p. 255. AGE DATING; ALKALIC COMPLEX; ALKALINE; ALKALINE INTRUSION; CANADA; COLDWELL COMPLEX; DISTRICT OF THUNDER BAY; GEOCHRONOLOGY; MINERAL AGES; ONTARIO; PORT COLDWELL; RUBIDIUM-STRONTIUM; SYENITE;

Chaudhuri, S., and Faure, G., 1964, The whole-rock Rb-Sr age of the Precambrian Nonesuch Shale in Michigan, in Variations in isotopic abundances: Cambridge, Massachusetts Institute of Technology, Department of Geology and Geophysics, U. S. Atomic Energy Commission 12th Annual Progress Report, p. 221-223. Report prepared for the U. S. Atomic Energy Commission Contract At(30-1)-1381 AGE DATING; GEOCHRONOLOGY; MICHIGAN; NONESUCH SHALE; ORONTO-GROUP; RUBIDIUM-STRONTIUM; SEDIMENTARY-ROCKS; SEDIMENTS; SHALE; UNITED- STATES; UPPER-PENINSULA; WHOLE ROCK;

---, 1967, Geochronology of the Keweenawan rocks, White Pine, Michigan: Economic Geology, v. 62, p. 1011-1033. AGE DATING; COPPER; ECONOMIC GEOLOGY; FRACTIONATION; GENESIS; GEOCHRONOLOGY; IGNEOUS-ROCKS; MICHIGAN; MICHIGAN COPPER DISTRICT; MINERAL DEPOSITS; NATIVE COPPER; NONESUCH SHALE; ONTONAGON-COUNTY; ORONTO-GROUP; RHYOLITE; RUBIDIUM-STRONTIUM; SEDIMENTARY-ROCKS; SEDIMENTS; SILVER; STRATABOUND; STRONTIUM ISOTOPES; UNITED-STATES; UPPER-PENINSULA; WHITE PINE MINE; WHOLE ROCK ANALYSES;

---, 1967, The geochronology of the Keweenawan rocks at White Pine, Michigan [abs.]: 13th Annual Institute on Lake Superior Geology, East Lansing, MI, v. 13, p. 6. AGE DATING; CHALCOCITE; COPPER; EPIGENETIC; FELSITE; GEOCHRONOLOGY; LEAD-LEAD; MICHIGAN; MICHIGAN COPPER DISTRICT; MINERALIZATION; ONTONAGON-COUNTY; ORE DEPOSITION; PORCUPINE MOUNTAINS; RUBIDIUM-STRONTIUM; UNITED-STATES; UPPER-PENINSULA; WHITE PINE MINE; WHITE PINE REGION;

---, 1968, Rubidium-strontium age of the Mount Bohemia intrusion in Michigan: Journal of Geology, v. 76, p. 488-490. AGE DATING; GEOCHRONOLOGY; INTRUSIVE; MICHIGAN; MOUNT BOHEMIA; RUBIDIUM; RUBIDIUM-STRONTIUM; STRONTIUM; UNITED- STATES;

Chaudhuri, S., Faure, G., and Brookins, D. G., 1968, Rb-Sr ages of intrusions along the Keweenawan Fault in northern Michigan [abs.]: 14th Annual Institute on Lake Superior Geology, Superior, WI, v. 14, p. 13. AGE DATING; BARE HILLS; BARE HILLS FELSITE; FELSITE; GEOCHRONOLOGY; INTRUSIONS; KEWEENAW FAULT; MICHIGAN; MOUNT BOHEMIA; MOUNT BOHEMIA STOCK; PORTAGE LAKE VOLCANICS; RUBIDIUM-STRONTIUM; UNITED-STATES; UPPER-PENINSULA;

Chou, I. M., Pasteris, J. D., and Seitz, J. C., 1990, High-density volatiles in the system C-O-H-N for the calibration of a laser Raman microprobe: Geochimica et Cosmochimica Acta, v. 54, p. 535-543. ANALYTICAL TECHNIQUES; DULUTH COMPLEX; FISH LAKE; FLUID INCLUSIONS; LAYERED INTRUSION; MINNESOTA; RAMAN MICROPROBE; ST. LOUIS COUNTY; UNITED-STATES; VOLATILES;

Churchill, R. K., 1978, A geochemical and petrological investigation of the Cu-Ni sulfide genesis in the Duluth Complex, Minnesota [M.S. Thesis]: University of Minnesota, Minneapolis, 101 p. ANIMIKIE; ANIMIKIE GROUP; B1-316; B1-73; BABBITT; BALD EAGLE INTRUSION; CHALCOPYRITE; COPPER; CUBANITE; DRILL HOLES; 17700; DULUTH COMPLEX; GEOCHEMISTRY; IMMISCIBLE SULFIDE; LAKE COUNTY; LAYERED INTRUSION; LOWER-PROTEROZOIC; MINERAL CHEMISTRY; MINERAL DEPOSIT; MINERALIZATION; MINNAMAX; MINNESOTA; NICKEL; ORE GENESIS; OXYGEN ISOTOPES; PARTRIDGE RIVER INTRUSION; PENTLANDITE; PETROGRAPHY; PETROLOGY; PYRRHOTITE; SEDIMENTARY-ROCKS; SOUTH KAWISHIWI INTRUSION; SPRUCE ROAD; ST. LOUIS COUNTY; STABLE-ISOTOPES; SULFIDE; SULFIDES; UNITED-STATES; VIRGINIA FORMATION; WYMAN CREEK;

Clark, J. G., 1983, Geology of the Centre II rocks of the Coldwell Peninsula, Coldwell Alkaline Complex [H.B.Sc. Thesis]: Lakehead University, Thunder Bay, Ontario, Canada, 70 p. ALKALIC COMPLEX; ALKALINE; ALKALINE INTRUSION; CANADA; CENTER II; COLDWELL COMPLEX; DISTRICT OF THUNDER BAY; GEOLOGY; ONTARIO; PORT COLDWELL; PROTEROZOIC;

Clark, K. F., and Yaghubpur, A. M., 1978, Petrologic investigations and economic implications of aeromagnetic anomalies associated with Precambrian lithologies of Iowa [abs.]: Geological Society of America Abstracts with Programs, v. 10, no. 1, p. 3. BAYFIELD-GROUP; DIKES; FELSIC; GABBRO; IGNEOUS-ROCKS; INTRUSIONS; IOWA; MAFIC; MAGNETIC-ANOMALIES; MAGNETIC-SURVEYS; NORITE; ORONTO-GROUP; PETROLOGY; PLUTONS; SEDIMENTARY-ROCKS; SEDIMENTS; SIOUX-QUARTZITE; UNITED-STATES;

Clark, R. C., 1985, The structural geology of the Thomson Formation: Cloquet and Esko quadrangles, east-central Minnesota [M.S. Thesis]: University of Minnesota, Duluth, 114 p. ANIMIKIE; ANIMIKIE BASIN; CARLTON COUNTY; CLOQUET QUADRANGLE; DEFORMATION; ESKO QUADRANGLE; KINK BANDS; LOWER-PROTEROZOIC; MINNESOTA; ST. LOUIS COUNTY; STRUCTURAL-GEOLOGY; THOMSON FORMATION; UNITED-STATES;

Clayton, R. N., and Epstein, S., 1958, The relationship between O18/O16 ratios in coexisting quartz, carbonate, and iron oxides from various geological deposits: Journal of Geology, v. 66, p. 352-373. BAYFIELD-COUNTY; CALCITE; CARBONATE; COPPER; EXPERIMENTAL STUDIES; FRACTIONATION; IRON OXIDES; MAGNETITE; MELLEN COMPLEX; MICHIGAN; MICHIGAN COPPER DISTRICT; MINERALS; NATIVE COPPER; OXYGEN ISOTOPES; QUARTZ; STABLE-ISOTOPES; UNITED-STATES; UPPER-PENINSULA; WISCONSIN;

Clements, J. M., 1903, The Vermilion iron-bearing district of Minnesota:, U. S. Geological Survey, Monograph 5, ARCHEAN; CONTACT METAMORPHISM; DULUTH COMPLEX; GREENSTONE BELTS; HEMATITE; IRON ORE; IRON-FORMATION; LAYERED INTRUSION; METAMORPHISM; MINNESOTA; ORE DEPOSIT; SOUDAN; ST. LOUIS COUNTY; UNITED-STATES; VERMILION DISTRICT;

Clews, D., and Lett, R. E., 1983, Results of SURTRACE geochemical surveys over the Marathon and Marshall Lake areas, District of Thunder Bay:, Ontario Geological Survey, Study 25, 61 p. ALKALIC COMPLEX; ALKALINE; ALKALINE INTRUSION; CANADA; COLDWELL COMPLEX; DISTRICT OF THUNDER BAY; GEOCHEMICAL SURVEY; GEOCHEMISTRY; MARATHON LAKE; MARSHALL LAKE; ONTARIO; PORT COLDWELL; PROTEROZOIC;

34 Cloos, M. P., 1976, Petrology of the Lester River intrusion, Duluth, Minnesota [B.S. Thesis]: University of Illinois, Champaign-Urbana, 71 p. DULUTH COMPLEX; INTRUSIVE; LAYERED INTRUSION; LESTER RIVER; LESTER RIVER SILL; MINNESOTA; PETROLOGY; SILLS; UNITED-STATES;

Closs, L. G., and Sado, E. V., 1982, Orientation overburden geochemistry and Quaternary geology investigations of carbonatite-alkalic complexes in the Prairie Lake and Killala Lake areas, District of Thunder Bay:, Ontario Geological Survey, Study 23, 65 p. ALKALIC COMPLEX; ALKALINE; ALKALINE INTRUSION; CANADA; CARBONATITE; CENOZOIC; DISTRICT OF THUNDER BAY; EXPLORATION; GEOCHEMISTRY; GEOLOGY; GLACIAL GEOLOGY; KILLALA LAKE ALKALIC COMPLEX; ONTARIO; OVERBURDEN; PHANEROZOIC; PRAIRIE LAKE CARBONATITE COMPLEX; QUATERNARY;

Coakley, B. J., Reynolds, D. J., and Wang, H. F., 1992, Structural evolution of Lake Superior; I, Western basin [abs.]: Geological Society of America Abstracts with Programs, v. 24, no. 7, p. A328. ANIMIKIE; ANIMIKIE GROUP; BAYFIELD-GROUP; COMPRESSION-TECTONICS; DOUGLAS-FAULT; EVOLUTION; EXTENSIONAL TECTONICS; FAULT; GEOPHYSICS; GRAVITY; GRAVITY-ANOMALIES; GRENVILLE OROGENY; ISLE ROYALE FAULT; JACOBSVILLE-SANDSTONE; KEWEENAW FAULT; LAKE SUPERIOR; LOWER-PROTEROZOIC; ORIENTATION; ORONTO-GROUP; REACTIVATION; SEDIMENTARY-ROCKS; SEDIMENTS; STRUCTURAL-GEOLOGY; TECTONICS;

---, 1992, Preliminary interpretations of Grant-Norpac seismic reflection data from Lake Superior [abs.]: Eos (American Geophysical Union Transactions), v. 73, no. 14, p. 320. ANIMIKIE GROUP; BAYFIELD-GROUP; CANADA; FAULTS; GEOPHYSICS; GRANT-NORPAC; GRAVITY; LAKE SUPERIOR; MAGNETICS; MICHIGAN; ORONTO-GROUP; PORTAGE LAKE VOLCANICS; REACTIVATION; REFLECTION; SEDIMENTS; SEISMIC; SEISMIC-SURVEYS; STRUCTURAL-GEOLOGY; THRUST-FAULTS; UNCONFORMITY; UNITED- STATES; UPPER-PENINSULA;

Coates, M. E., 1967, Geology of the Killala Lake igneous complex, District of Thunder Bay, Ontario, Canada [M.Sc. Thesis]: McGill University, Montreal, Quebec, Canada, 128 p. ALKALIC COMPLEX; ALKALINE; ALKALINE INTRUSION; CANADA; DISTRICT OF THUNDER BAY; GEOLOGY; KILLALA LAKE ALKALIC COMPLEX; ONTARIO; PROTEROZOIC;

---, 1970, Geology of the Killala-Vein lakes area:, Ontario Department of Mines, Geological Report 81, 35 p. ALKALIC COMPLEX; CANADA; DISTRICT OF THUNDER BAY; GEOLOGY; KILLALA LAKE ALKALIC COMPLEX; ONTARIO; VEIN LAKE;

Cogulu, E., 1985, Platinum-group elements and variations in chromium spinel in the Crystal Lake Gabbro, Thunder Bay, Ontario [abs.]: The Canadian Mineralogist, v. 23, p. 299-300. CANADA; CHROMIUM; CHROMIUM SPINEL; CRYSTAL LAKE INTRUSION; DISTRICT OF THUNDER BAY; GREAT LAKES NICKEL; MINERAL CHEMISTRY; MINERALIZATION; MINNESOTA; ONTARIO; PARDEE TOWNSHIP; PGE; SPINEL; UNITED-STATES;

Cogulu, E. H., 1984, Magmatic cycles in the Crystal Lake , Thunder Bay, Ontario [abs.]: Geological Association of Canada Program with Abstracts, v., p. 53. CANADA; CRYSTAL LAKE INTRUSION; DISTRICT OF THUNDER BAY; GREAT LAKES NICKEL; IGNEOUS LAYERING; MAGMATIC; MINNESOTA; ONTARIO; PARDEE TOWNSHIP; THUNDER BAY; UNITED-STATES;

---, 1990, Mineralogical and petrological studies of the Crystal Lake Intrusion, Thunder Bay, Ontario. Geological Survey of Canada, Open File Rept. 2277, 67 p. CANADA; CHROMIUM; COPPER; CRYSTAL LAKE INTRUSION; CUMULATES; DISTRICT OF THUNDER BAY; GEOCHEMISTRY; GREAT LAKES NICKEL; IGNEOUS LAYERING; INTRUSIVE; MINERALOGY; NICKEL; ONTARIO; PARDEE TOWNSHIP; PARTIAL MELTING; PETROLOGY; PGE; SPINEL; SULFIDES; THUNDER BAY;

---, 1993, Mineralogy and chemical variations of sulphides from the Crystal Lake Intrusion, Thunder Bay, Ontario:, Geological Survey of Canada, Open-File 2749, 51 p. ANIMIKIE; ANIMIKIE GROUP; ASSIMILATION; BORNITE; CANADA; CHALCOPYRITE; COBALT; CONTAMINATION; COPPER; CRYSTAL LAKE INTRUSION; CUBANITE; CUMULATES; DEVOLATILIZATION; DISSEMINATED ORE; DISTRICT OF THUNDER BAY; FRACTIONAL CRYSTALLIZATION; GREAT LAKES NICKEL; IMMISCIBLE LIQUID; IMMISCIBLE SULFIDE LIQUID; LOWER-PROTEROZOIC; MACKINAWITE; MARCASITE; MASSIVE SULFIDE ORE; MAUCHERITE; MILLERITE; MINERAL CHEMISTRY; MINERALOGY; MINNESOTA; NATIVE BISMUTH; NICCOLITE; NICKEL; NICKELOAN PYRITE; ONTARIO; PARDEE TOWNSHIP; PENTLANDITE; PGE; PLATINUM-GROUP ELEMENTS; PYRITE; PYRRHOTITE; ROVE FORMATION; SEDIMENTARY-ROCKS; SPHALERITE; SULFIDES; TROILITE; UNITED-STATES; VIOLARITE; VOLATILES;

---, 1993, Factors controlling postcumulus compositional changes of chrome-spinels in the Crystal Lake Intrusion, Thunder Bay, Ontario:, Geological Survey of Canada, Open File 2748, 79 p. ADCUMULUS; CANADA; CHROMIUM SPINEL; CRYSTAL LAKE INTRUSION; CUMULATES; DISTRICT OF THUNDER BAY; GREAT LAKES NICKEL; IGNEOUS-PROCESSES; INTERCUMULUS; MINERAL CHEMISTRY; ONTARIO; PARDEE TOWNSHIP; POSTCUMULUS; REEQUILIBRATION; SPINEL;

Cohen, T. J., 1966, Explosion seismic studies of the midcontinent gravity high [Ph.D. Dissertation]: University of Wisconsin, Madison, 350 p. GEOPHYSICS; GRAVITY; IOWA; NEBRASKA; REFRACTION; SEISMIC; SEISMIC-SURVEYS; UNITED-STATES;

Cohen, T. J., and Meyer, R. P., 1966, The midcontinent gravity high: Gross crustal structure, in Steinhart, J. S., and Smith, T. J., eds., The Earth beneath the continents:, American Geophysical Union, Geophysical Monograph 10, p. 141-165. CRUST; GEOPHYSICS; GRAVITY; IOWA; REFRACTION; SEISMIC; SEISMIC-SURVEYS; STRUCTURAL-GEOLOGY;

Coker, W. B., and Franklin, J. M., 1980, Regional geochemistry and metallogeny, north shore of Lake Superior, Ontario [abs.]: 26th Annual Institute on Lake Superior Geology, Eau Claire, WI, v. 26, p. 60-61. ALKALIC COMPLEX; ALKALINE; ALKALINE INTRUSION; ARCHEAN; BARITE; CANADA; CARBONATITE; COLDWELL COMPLEX; COPPER; CRYSTAL LAKE INTRUSION; CU-MO PORPHYRY; DISTRICT OF THUNDER BAY; DULUTH COMPLEX; GEOCHEMISTRY; GOLD; GREAT LAKES NICKEL; GREENSTONE BELTS; GUNFLINT IRON- FORMATION; INTRUSIONS; IRON-FORMATION; KAMA HILL FORMATION; LAKE SEDIMENT; LAYERED INTRUSION; LEAD; LOGAN SILLS; LOWER-PROTEROZOIC; MAFIC; MANITOUWADGE LAKE; METALLOGENY; NICKEL; NIOBIUM; NORTH SHORE GOLD;

35 ONTARIO; OSLER GROUP; PALLADIUM; PEGMATITE; PGE; PLATINUM; PLATINUM-GROUP ELEMENTS; PORT COLDWELL; PRAIRIE LAKE CARBONATITE COMPLEX; RARE-EARTH ELEMENTS; RED-BEDS; REE; REGIONAL; ROSSPORT FORMATION; ROVE FORMATION; SIBLEY GROUP; SILVER; TRACE ELEMENT ANALYSES; URANIUM; VEINS; VMS; VOLCANOGENIC MASSIVE SULFIDES; ZENMAC; ZINC;

Coleman, A. P., 1898, Port Coldwell region, in Annual Report:, Ontario Bureau of Mines, p. 146-149. ALKALIC COMPLEX; ALKALINE; ALKALINE INTRUSION; CANADA; COLDWELL COMPLEX; DISTRICT OF THUNDER BAY; ONTARIO; PORT COLDWELL; PROTEROZOIC;

---, 1899, Copper regions of the Upper Lakes, in 8th Annual Report:, Ontario Bureau of Mines, part 2, p. 121-174. CANADA; CONGLOMERATE; COPPER; DISTRICT OF ALGOMA; ONTARIO; SEDIMENTARY-ROCKS; SEDIMENTS;

---, 1899, Dyke rocks near Heron Bay, in Annual Report:, Ontario Bureau of Mines, p. 172-174. ALKALIC COMPLEX; ALKALINE; ALKALINE INTRUSION; CANADA; COLDWELL COMPLEX; DIKES; DISTRICT OF THUNDER BAY; HERON BAY; ONTARIO; PORT COLDWELL; PROTEROZOIC;

---, 1899, A new analcite rock from Lake Superior: Journal of Geology, v. 7, p. 431-436. ALKALIC COMPLEX; ALKALINE; ALKALINE INTRUSION; ANALCITE; CANADA; COLDWELL COMPLEX; DISTRICT OF THUNDER BAY; ONTARIO; PORT COLDWELL; PROTEROZOIC;

---, 1900, Heronite or analcite tiguaite, in: Ontario Bureau of Mines, Annual Report, v. 9, p. 186-191. ALKALIC COMPLEX; ALKALINE; ALKALINE INTRUSION; CANADA; COLDWELL COMPLEX; DISTRICT OF THUNDER BAY; ONTARIO; PORT COLDWELL; PROTEROZOIC;

---, 1902, Syenites near Port Coldwell, in 11th Annual Report:, Ontario Bureau of Mines, p. 208-213. ALKALIC COMPLEX; ALKALINE; ALKALINE INTRUSION; CANADA; COLDWELL COMPLEX; DISTRICT OF THUNDER BAY; ONTARIO; PORT COLDWELL; SYENITE;

Coleman, R. T., Jr., 1978, The behavior of minor and trace elements in a smelter treating copper/nickel concentrates from the Minnesota Duluth Gabbro Complex: Austin, Texas, Radian Corporation, Report to Minnesota Environmental Quality Board, 50 p. ANTIMONY; ARSENIC; BISMUTH; CADMIUM; CHLORINE; COBALT; CONCENTRATE; COPPER; DULUTH COMPLEX; FLUORINE; GEOCHEMISTRY; GRINDING; LAKE COUNTY; LAYERED INTRUSION; LEAD; MATTE; MERCURY; MINERAL PROCESSING; MINNESOTA; NICKEL; REGIONAL COPPER- NICKEL STUDY; SMELTING; ST. LOUIS COUNTY; SULFUR; TITANIUM; TRACE ELEMENTS ANALYSES; UNITED-STATES; ZINC;

Collie, G. L., 1901, Wisconsin shore of Lake Superior: Geological Society of America Bulletin, v. 12, p. 197-216. GEOLOGY; GEOMORPHOLOGY; LAKE SUPERIOR; MONTREAL-RIVER; SANDSTONE; SEDIMENTARY STRUCTURES; SEDIMENTARY-ROCKS; UNITED-STATES; WISCONSIN;

Collins, and Camsell, 1913, The nepheline and alkali syenites of the Port Coldwell area, in Transcontinental Excursion C1, Toronto to Victoria and return via Canadian Pacific and Canadian Northern railways: Guide Book No. 8, Part 1, p. 16-24. ALKALIC COMPLEX; ALKALINE; ALKALINE INTRUSION; CANADA; COLDWELL COMPLEX; DISTRICT OF THUNDER BAY; ONTARIO; PORT COLDWELL; SYENITE;

Collins, J. A., 1974, The sedimentary copper universal; from sedimentologic and stratigraphic syntheses of the Proterozoic of Icon, Quebec; Grinnell Formation, Alberta; Nonesuch Shale, Michigan; and the Horton-Windsor formations of Nova Scotia [Ph.D. Dissertation]: Queen's University, Kingston, Ontario, Canada, 259 p. ALBERTA; CANADA; COPPER-ORES; ECONOMIC GEOLOGY; GENESIS; GRINNELL- FORMATION; HORTON FORMATION; ICON; MICHIGAN; MINERAL DEPOSITS; MISSISSIPPIAN; NONESUCH SHALE; NOVA SCOTIA; ORONTO-GROUP; PALEOZOIC; PHANEROZOIC; QUEBEC; SEDIMENT-HOSTED; SEDIMENTARY-PROCESSES; SEDIMENTARY- ROCKS; SEDIMENTATION; SEDIMENTOLOGY; SEDIMENTS; STRATIGRAPHY; UNITED-STATES; UPPER-PENINSULA; WINDSOR FORMATION;

Connan, J., 1976, Etude geochimique d'un echantillon d'huile de la mine de White Pine (Michigan, U.S.A.):, Centre de Recherches-Pau, Department des Recherches en Geologie, Informal Report, 5 p. COPPER; GEOCHEMISTRY; HYDROCARBONS; MICHIGAN; MICHIGAN COPPER DISTRICT; MINE; OIL; ONTONAGON-COUNTY; ORGANIC GEOCHEMISTRY; UNITED-STATES; UPPER-PENINSULA; WHITE PINE MINE;

Coombs, S. L., 1969, Footwall features as related to ore occurrence in the Kingston Conglomerate, Keweenaw County, Michigan [M.S. Thesis]: University of Arizona COPPER; KEWEENAW COUNTY; KINGSTON CONGLOMERATE; KINGSTON NO. 1 MINE; MICHIGAN; MICHIGAN COPPER DISTRICT; NATIVE COPPER; ORIGIN; UNITED-STATES; UPPER-PENINSULA;

Coons, R. L., 1966, Precambrian basement geology and Paleozoic structure of the midcontinent gravity high [Ph.D. Dissertation]: University of Wisconsin, Madison, 296 p. GEOLOGY; PALEOZOIC; STRUCTURAL-GEOLOGY; UNITED-STATES;

Coons, R. L., Woollard, G. P., and Hershey, H. G., 1967, Structural significance and analysis of the midcontinent gravity high: American Association of Petroleum Geologists Bulletin, v. 51, no. 12, p. 2381-2399. BASEMENT; BOUGUER-ANOMALIES; FAULTS; GEOLOGY; GEOPHYSICS; GRAVITY; GRAVITY-ANOMALIES; IOWA; KANSAS; MINNESOTA; NEBRASKA; PALEOZOIC; PHANEROZOIC; STRUCTURAL- GEOLOGY; UNITED-STATES; VELOCITY;

Cooper, R. W., 1973, Middle Precambrian and Keweenawan rocks north of the Gogebic Range in Wisconsin [M.S. Thesis]: University of Wisconsin, Madison, 83 p. GEOLOGY; GOGEBIC IRON RANGE; IRON-FORMATION; STRATIGRAPHY; UNITED-STATES; WISCONSIN;

36 ---, 1973, The Keweenawan volcanics north of the Gogebic Range in Wisconsin [abs.]: 19th Annual Institute on Lake Superior Geology, Madison, WI, v. 19, p. 9. COPPER HARBOR CONGLOMERATE; GOGEBIC IRON RANGE; INTERFLOW SEDIMENTS; ORONTO-GROUP; STRATIGRAPHY; THICKNESS; UNITED-STATES; VOLCANIC ROCKS; WISCONSIN;

---, 1978, Lineament and structural analysis of the Duluth Complex, Hoyt Lakes-Kawishiwi area, northeastern Minnesota [Ph.D. Dissertation]: University of Minnesota, Minneapolis, 280 p. DULUTH COMPLEX; HOYT LAKES; LAKE COUNTY; LAYERED INTRUSION; LINEAMENT; MINNESOTA; ST. LOUIS COUNTY; STRUCTURAL-GEOLOGY; UNITED-STATES;

---, 1978, Geology of the regional copper-nickel study area:, Minnesota Environmental Quality Board, Regional Copper-Nickel Study Area, 59 p. ANORTHOSITIC SERIES; ARCHEAN; BIWABIK IRON-FORMATION; COPPER; DULUTH COMPLEX; EXPLORATION; FELSIC SERIES; GEOLOGY; GIANTS RANGE BATHOLITH; GRANITE; GREENSTONE BELTS; GUNFLINT IRON-FORMATION; IRON-FORMATION; LAKE COUNTY; LAYERED INTRUSION; LINEAMENT; LOWER-PROTEROZOIC; MESABI RANGE; MINERALIZATION; MINERALOGY; MINNESOTA; NICKEL; NORTH SHORE VOLCANIC GROUP; PUCKWUNGE FORMATION; REGIONAL COPPER-NICKEL STUDY; SOUTH KAWISHIWI INTRUSION; ST. LOUIS COUNTY; STRUCTURAL-GEOLOGY; SULFIDE; SULFIDES; TROCTOLITIC SERIES; UNITED- STATES; VERMILION MASSIF; VOLCANIC ROCKS;

Cooper, R. W., and Churchill, R., 1975, Field map of the INCO Minesite, Lake County, Minnesota: Minnesota Geological Survey, Open-File Map. COPPER; DULUTH COMPLEX; INCO; LAKE COUNTY; LAYERED INTRUSION; MAP; MINERAL DEPOSIT; MINERALIZATION; MINNESOTA; NICKEL; SOUTH KAWISHIWI INTRUSION; SPRUCE ROAD; SULFIDES; UNITED-STATES;

Cooper, R. W., and Morey, G. B., 1977, The application of linear topographic features to structural interpretation of a glaciated Precambrian terrane in northeastern Minnesota [abs.]: 23rd Annual Institute on Lake Superior Geology, Thunder Bay, ONT, v. 23, p. 12. AEROMAGNETICS; ANIMIKIE; ANIMIKIE GROUP; ARCHEAN; CENOZOIC; COOK COUNTY; DULUTH COMPLEX; FAULTS; GEOPHYSICS; GIANTS RANGE BATHOLITH; GLACIATION; GRANITE; LAYERED INTRUSION; LINEAMENT; LOWER-PROTEROZOIC; MINNESOTA; PHANEROZOIC; PLEISTOCENE; QUATERNARY; RAINY LOBE; ST. LOUIS COUNTY; STRUCTURAL-GEOLOGY; TOPOGRAPHIC; TOPOGRAPHY; UNITED-STATES; VERMILION DISTRICT; VERMILION MASSIF;

Cooper, R. W., Morey, G. B., and Weiblen, P. W., 1977, Lineament and structural analysis of Precambrian rocks in northeastern Minnesota [abs.]: Geological Society of America Abstracts with Programs, v. 9, p. 934-935. AEROMAGNETICS; ANIMIKIE; ARCHEAN; DULUTH COMPLEX; GEOPHYSICS; GREENSTONE BELTS; LAYERED INTRUSION; LINEAMENT; LOWER-PROTEROZOIC; MINNESOTA; SOUTH KAWISHIWI INTRUSION; STRUCTURAL-GEOLOGY; TOPOGRAPHY; UNITED-STATES;

---, 1978, Topographic and aeromagnetic lineaments and their relationship to bedrock geology in a glaciated Precambrian terrane northeastern Minnesota, in Proceedings of the 3rd International Conference on Basement Tectonics, p. 137-148. Durango, Colorado AEROMAGNETICS; BEDROCK; DULUTH COMPLEX; GEOLOGY; GEOPHYSICS; GLACIAL GEOLOGY; LAYERED INTRUSION; LINEAMENT; MINNESOTA; TOPOGRAPHY; UNITED-STATES;

---, 1981, Topographic and aeromagnetic lineaments and their relationship to bedrock geology in a glaciated Precambrian terrane, northeastern Minnesota, in O'Leary, D. W., and Earle, J. L., eds., Proceedings of the Third International Conference on Basement Tectonics: Denver, p. 137-148. AEROMAGNETICS; BEDROCK; COOK COUNTY; COPPER; DULUTH COMPLEX; FAULTS; GEOPHYSICS; GLACIAL LAKE DUNKA; GLACIAL LAKE NORWOOD; GLACIATION; LAKE COUNTY; LAYERED INTRUSION; LINEAMENT; MINERAL DEPOSIT; MINERALIZATION; MINNESOTA; NICKEL; RAINY LOBE; SOUTH KAWISHIWI INTRUSION; SPRUCE ROAD; STRUCTURAL- GEOLOGY; SULFIDES; TOIMI DRUMLIN FIELD; TOPOGRAPHIC; TOPOGRAPHY; UNITED-STATES;

Corbett, J. D., Hinze, W., and Secor, G. B., 1967, A regional geophysical study of the Port Coldwell Complex, Ontario [abs.]: 13th Annual Institute on Lake Superior Geology, East Lansing, MI, v. 13, p. 8. ALKALIC COMPLEX; ALKALINE; ALKALINE INTRUSION; CANADA; COLDWELL COMPLEX; DISTRICT OF THUNDER BAY; GEOPHYSICS; GRAVITY; GRAVITY-ANOMALIES; MAGNETIC-ANOMALIES; MAGNETICS; ONTARIO; PORT COLDWELL; REGIONAL;

Cordua, W. S., 1989, A summary of the bedrock geology of the Dresser-St. Croix Falls area, Polk County, Wisconsin and Chisago County, Minnesota:, 53rd Annual Tri-State Field Conference Guidebook, River Falls, WI, BEDROCK; CHISAGO-COUNTY; GEOLOGY; GUIDEBOOK; MINNESOTA; POLK-COUNTY; UNITED-STATES; WISCONSIN;

Cordua, W. S., Bauer, D. P., Gilbertson, J. P., Koskelin, K. M., and Oberli, J. W., 1979, Geologic setting of copper mineralization in Precambrian (Keweenawan) basaltic volcanics and Upper Cambrian sediments in the St. Croix Falls area, Wisconsin and Minnesota [abs.]: Geological Society of America Abstracts with Programs, v. 11, no. 5, p. 227. CAMBRIAN; CHENGWATANA VOLCANIC GROUP; COPPER; ECONOMIC GEOLOGY; FRANCONIA-FORMATION; GENESIS; METAMORPHIC-ROCKS; METAVOLCANIC-ROCKS; MINERAL DEPOSITS; MINERAL-ASSEMBLAGES; MINERALIZATION; MINNESOTA; PALEOZOIC; PHANEROZOIC; POLK-COUNTY; PROCESSES; SEDIMENTARY-ROCKS; SEDIMENTS; UNITED-STATES; VOLCANIC ROCKS; WASHINGTON-COUNTY; WEATHERING; WISCONSIN;

Corey, G. W., 1906, The Nonesuch sandstone [Porcupine district, Mich.]: Engineering and Mining Journal, v. 82. p. 778. COPPER; ECONOMIC GEOLOGY; LAKE SUPERIOR REGION; MICHIGAN; NONESUCH SHALE; ORONTO-GROUP; SEDIMENTARY-ROCKS; SEDIMENTS; UNITED-STATES;

Cornwall, H. R., 1951, Differentiation in magmas of the Keweenawan series: Journal of Geology, v. 59, p. 151-172. DIFFERENTIATION; IGNEOUS PROCESS; MICHIGAN; MICHIGAN COPPER DISTRICT; UNITED-STATES; UPPER-PENINSULA;

---, 1951, Differentiation in lavas of the Keweenawan series and the origin of the copper deposits of Michigan: Geological Society of America Bulletin, v. 62, p. 159-202. ALLOUEZ MINE; BASALT; BIG TRAP; CHALCOCITE; CLIFF MINE; COPPER; DELAWARE MINE; DIFFERENTIATION; GENESIS; GEOCHEMISTRY; GREENSTONE AMYGDALOID; GREENSTONE FLOW; HEMATITE; HOUGHTON-

37 COUNTY; IGNEOUS-PROCESSES; KEARSARGE CONGLOMERATE; KEWEENAW COUNTY; MAJOR ELEMENT ANALYSES; MANDAN FLOW; MICHIGAN; MICHIGAN COPPER DISTRICT; MODAL ANALYSES; NATIVE COPPER; ORIGIN; PEGMATITE; PETROGRAPHY; PEWABIC AMYGDALOID; PORTAGE LAKE VOLCANICS; SOUTH RANGE QUARRY; SPECIFIC GRAVITY; SPECULAR HEMATITE; SULFIDES; UNITED-STATES; UPPER-PENINSULA; VOLCANIC ROCKS; WHOLE ROCK ANALYSES;

---, 1951, Ilmenite, magnetite, hematite, and copper in lavas of the Keweenawan Series: Economic Geology, v. 46, p. 51-67. ALTERATION; BASALT; BORNITE; CHALCOPYRITE; COPPER; COVELLITE; GEOCHEMISTRY; GREENSTONE FLOW; HEMATITE; ILMENITE; MAGNETITE; MAJOR ELEMENT ANALYSES; MICHIGAN; MICHIGAN COPPER DISTRICT; MINERALOGY; MODAL ANALYSES; NATIVE COPPER; PARAGENESIS; PETROGRAPHY; PORTAGE LAKE VOLCANICS; PYRITE; SPHENE; SULFIDES; UNITED-STATES; UPPER-PENINSULA; VEINS; VOLCANIC ROCKS; WHOLE ROCK ANALYSES;

---, 1954, Bedrock geology of the Phoenix quadrangle, Michigan: U. S. Geological Survey, Geologic Quadrangle, Map GQ-34, scale 1:24,000. GEOLOGY; MAP; MICHIGAN; MICHIGAN COPPER DISTRICT; PHOENIX QUADRANGLE; UNITED-STATES; UPPER-PENINSULA;

---, 1954, Bedrock geology of the Delaware quadrangle, Michigan: U. S. Geological Survey, Geologic Quadrangle, Map GQ-51, scale 1:24,000. BASALT; DELAWARE QUADRANGLE; GEOLOGY; GREENSTONE FLOW; KEWEENAW COUNTY; KEWEENAW PENINSULA; MAP; MICHIGAN; MICHIGAN COPPER DISTRICT; PORTAGE LAKE VOLCANICS; THICKNESS; UNITED-STATES; UPPER-PENINSULA; VOLCANIC ROCKS;

---, 1954, Bedrock geology of the Lake Medora quadrangle, Michigan: U. S. Geological Survey, Geologic Quadrangle, Map GQ-52, scale 1:24,000. GEOLOGY; GREENSTONE FLOW; KEWEENAW COUNTY; KEWEENAW PENINSULA; LAKE MEDORA QUADRANGLE; MAP; MICHIGAN; MICHIGAN COPPER DISTRICT; PORTAGE LAKE VOLCANICS; UNITED-STATES; UPPER-PENINSULA;

---, 1954, Differentiation of lavas of the Keweenawan Series and the origin of copper deposits of Michigan: Geological Society of America Bulletin, v. 62, p. 159-201. COPPER; DIFFERENTIATION; GENESIS; MICHIGAN; MICHIGAN COPPER DISTRICT; NATIVE COPPER; ORIGIN; UNITED-STATES; UPPER-PENINSULA; VOLCANIC ROCKS;

---, 1955, Bedrock geology of the Fort Wilkins quadrangle, Michigan: U. S. Geological Survey, Geologic Quadrangle, Map GQ-74, scale 1:24,000. BASALTS; CALUMET; COPPER HARBOR CONGLOMERATE; FORT WILKINS QUADRANGLE; GEOLOGY; GREENSTONE FLOW; KEWEENAW COUNTY; KEWEENAW PENINSULA; LAKE SHORE TRAPS; MAP; MICHIGAN; MICHIGAN COPPER DISTRICT; ORONTO- GROUP; PORTAGE LAKE VOLCANICS; UNITED-STATES; UPPER-PENINSULA;

---, 1956, A summary of ideas on the origin of native copper deposits: Economic Geology, v. 51, no. 7, p. 615-631. BASALTS; COPPER; HYDROTHERMAL; METEORIC; MICHIGAN; MICHIGAN COPPER DISTRICT; MINERALIZATION; NATIVE COPPER; ORIGIN; SOLUTIONS; UNITED-STATES; UPPER-PENINSULA;

Cornwall, H. R., and Rose, H. J., Jr., 1957, Minor elements in Keweenawan lavas, Michigan: Geochimica et Cosmochimica Acta, v. 12, p. 209-224. ALLOUEZ MINE; ARSENIC; BALTIC AMYGDALOID; BASALT; BIG TRAP; CALUMET AND HECLA CONGLOMERATE; CENTENNIAL- MINE; CONGLOMERATE; COPPER; COPPER CITY FLOW; GEOCHEMISTRY; GREENSTONE FLOW; HOUGHTON CONGLOMERATE; IROQUOIS AMYGDALOID; IROQUOIS MINE; ISLE ROYALE AMYGDALOID; KEARSARGE AMYGDALOID; KEARSARGE FLOW; MICHIGAN; MICHIGAN COPPER DISTRICT; MINOR ELEMENT ANALYSES; PENINSULA MINE; PEWABIC AMYGDALOID; PORTAGE LAKE VOLCANICS; SILVER; UNITED-STATES; UPPER-PENINSULA; VOLCANIC ROCKS;

Cornwall, H. R., and White, W. S., 1955, Bedrock geology of the Manitou Island Quadrangle, Michigan: U. S. Geological Survey, Geologic Quadrangle, Map GQ-73, scale 1:24,000. CLASTIC-ROCKS; CONGLOMERATE; COPPER HARBOR CONGLOMERATE; GEOLOGIC- FORMATIONS; HISTORICAL-GEOLOGY; IGNEOUS-ROCKS; MANITOU ISLAND QUADRANGLE; MANITOU-ISLAND; MAP; MICHIGAN; MICHIGAN COPPER DISTRICT; ORONTO-GROUP; PETROLOGY; SEDIMENTARY-ROCKS; SEDIMENTS; UNITED-STATES; UPPER- PENINSULA;

Cornwall, H. R., and Wright, J. C., 1954, Bedrock geology of the Eagle Harbor quadrangle, Michigan: U. S. Geological Survey, Geologic Quadrangle, Map GQ-36, scale 1:24,000. BASALTS; CONGLOMERATE; EAGLE HARBOR QUADRANGLE; GEOLOGY; GREENSTONE FLOW; INTERFLOW SEDIMENTS; KEWEENAW COUNTY; KEWEENAW PENINSULA; MAP; MICHIGAN; MICHIGAN COPPER DISTRICT; PORTAGE LAKE VOLCANICS; SEDIMENTARY-ROCKS; SEDIMENTS; THICKNESS; UNITED-STATES; UPPER-PENINSULA; VOLCANIC ROCKS;

---, 1956, Geologic map of the Hancock quadrangle, Michigan: U. S. Geological Survey, Mineral Investigation Field Studies, Map MF-46, scale 1:24,000. BASALTS; COPPER HARBOR CONGLOMERATE; GEOLOGY; GREENSTONE FLOW; HANCOCK; HANCOCK QUADRANGLE; HOUGHTON; HOUGHTON-COUNTY; KEWEENAW PENINSULA; LAKE SHORE TRAPS; MAP; MICHIGAN; MICHIGAN COPPER DISTRICT; MINERAL DEPOSITS; ORONTO-GROUP; PORTAGE LAKE VOLCANICS; UNITED-STATES; UPPER-PENINSULA; VOLCANIC ROCKS;

---, 1956, Geologic map of the Laurium quadrangle, Michigan: U. S. Geological Survey, Mineral Investigations Field Studies, Map MF-47, scale 1:24,000. GEOLOGY; HOUGHTON-COUNTY; KEWEENAW PENINSULA; LAURIUM-QUADRANGLE; MAP; MICHIGAN; MICHIGAN COPPER DISTRICT; UNITED-STATES; UPPER-PENINSULA;

Coyner, A. R., 1974, Geology of copper and cobalt veins, Loon Lake, Minnesota [abs.]: 20th Annual Institute on Lake Superior Geology, Sault Ste. Marie, ONT, v. 20, p. 10. ANIMIKIE; ARSENOPYRITE; CANADA; CHALCOPYRITE; COBALT; COOK COUNTY; COPPER; DIABASE; DISTRICT OF THUNDER BAY; DULUTH COMPLEX; FRACTURES; GEOLOGY; LOGAN SILLS; LOON LAKE; LOWER-PROTEROZOIC; MINERAL DEPOSITS; MINERALIZATION; MINERALOGY; MINNESOTA; MONOCLINE; ONTARIO; OXIDES; PYRITE; PYRRHOTITE; ROVE FORMATION; SILLS; SILVER; STRUCTURAL-GEOLOGY; SULFIDES; UNITED-STATES; VEINS;

38 Craddock, C., 1972, Keweenawan geology of east-central and southeastern Minnesota, in Sims, P. K., and Morey, G. B., eds., Geology of Minnesota: A Centennial Volume: St. Paul, Minnesota Geological Survey, p. 416-424. AREAL-GEOLOGY; BASINS; BAYFIELD-GROUP; BELLE PLAINE FAULT; CARLTON COUNTY; CHENGWATANA VOLCANIC GROUP; CHISAGO-COUNTY; COTTAGE GROVE FAULT; DOUGLAS- FAULT; ENGINEERING-GEOLOGY; FAULTS; FOND DU LAC FORMATION; HASTINGS-FAULT; HINCKLEY-SANDSTONE; HORSTS; LITHOSTRATIGRAPHY; MINNESOTA; ORONTO-GROUP; PINE-COUNTY; RESERVOIRS; SAINT CROIX HORST; SEDIMENTARY- ROCKS; SEDIMENTS; SIOUX-QUARTZITE; SOLOR CHURCH FORMATION; ST. CROIX RIVER; STRATIGRAPHY; STRUCTURAL- GEOLOGY; TAYLOR'S FALLS; TECTONICS; UNITED-STATES; UPPER-VOLCANIC ROCKS;

---, 1972, Regional geologic setting, in Sims, P. K., and Morey, G. B., eds., Geology of Minnesota: A Centennial Volume: St. Paul, Minnesota Geological Survey, p. 281-291. AREAL-GEOLOGY; CLASTICS; CRUST; FAULTS; FOLDS; HORSTS; LAKE SUPERIOR; LITHOSTRATIGRAPHY; MINNESOTA; SEDIMENTARY-ROCKS; SEDIMENTS; STRATIGRAPHY; STRUCTURAL-GEOLOGY; TECTONICS; TERRIGENOUS; TRANSVERSE; UNITED-STATES; UPPER-PRECAMBRIAN;

---, 1972, Structural evolution of the Keweenaw province [abs.]: Geological Society of America Abstracts with Programs, v. 4, no. 7, p. 715-716. EVOLUTION; GEOPHYSICS; STRUCTURAL-GEOLOGY; UNITED-STATES;

---, 1973, Structural evolution of the Keweenawan province: Geology, v. 1, no. 4, p. 190. EVOLUTION; STRUCTURAL-GEOLOGY;

Craddock, C., and Mooney, H. M., 1970, Geologic structure under the northern Midcontinent gravity high [abs.]: Geological Society of America Abstracts with Programs, v. 2, no. 7, p. 527-528. GEOPHYSICS; STRUCTURAL-GEOLOGY;

Craddock, C., Mooney, H. M., and Kolehmainen, V., 1969, Simple Bouguer gravity map of Minnesota and northwestern Wisconsin:, Minnesota Geological Survey, Bulletin, DULUTH COMPLEX; GEOPHYSICS; GRAVITY; LAYERED INTRUSION; MAP; MINNESOTA; UNITED- STATES; WISCONSIN;

---, 1970, Simple Bouguer gravity map of Minnesota and northwestern Wisconsin: Minnesota Geological Survey, Miscellaneous Map Series, Map M-10, scale 1:1,000,000. 14 p. GEOPHYSICS; GRAVITY; MINNESOTA; UNITED-STATES; WISCONSIN;

Craddock, C., Mudrey, M. G., Jr., and Ali, H. M., 1981, Lake Superior field Trip:, University of Wisconsin, Madison, Department of Geology and Geophysics, Guidebook for International Proterozoic Symposium, 99 p. ARCHEAN; ASHLAND 2 DEGREE QUADRANGLE; CENOZOIC; GEOLOGY; GLACIAL GEOLOGY; GUIDEBOOK; IRON-FORMATION; LOWER-PROTEROZOIC; MICHIGAN; PALEOZOIC; PHANEROZOIC; PLEISTOCENE; QUATERNARY; UNITED-STATES; WISCONSIN;

Craddock, C., Thiel, E. C., and Gross, B., 1963, A gravity investigation of southeastern Minnesota and western Wisconsin: Journal of Geophysical Research, v. 68, p. 6015-6032. GEOPHYSICS; GRAVITY; GRAVITY-SURVEYS; MINNESOTA; UNITED-STATES; WISCONSIN;

Craddock, J. P., Pearson, A. M., McGovern, M. G., Moshoian, A., and Donnelly, K., 1995, Post-extension shortening strains preserved in calcites of the Midcontinent Rift [abs.], in Ojakangas, R. W., Dickas, A. B., and Green, J. C., eds., Basement Tectonics 10: Proceedings of the Tenth International Conference on Basement Tectonics: Netherlands, Kluwer Academic Publishers, v. 4, p. 419. CALCITE; CLASTIC DIKE; DOUGLAS-FAULT; JACOBSVILLE-SANDSTONE; MICHIGAN; ORONTO-GROUP; PENOKEAN OROGENY; STRAIN; STRUCTURAL-GEOLOGY; UNITED- STATES; UPPER-PENINSULA; VEINS; WISCONSIN;

Crisman, D. P., 1982, Groundwater geochemistry in the Portage Lake Volcanics, Hancock, Michigan and implications for native copper stability [M.S. Thesis]: Michigan Technological University, Houghton, 138 p. COPPER; GEOCHEMISTRY; GROUNDWATER; HOUGHTON-COUNTY; HYDROLOGY; MICHIGAN; MICHIGAN COPPER DISTRICT; NATIVE COPPER; PORTAGE LAKE VOLCANICS; UNITED-STATES; UPPER- PENINSULA; WATER CHEMISTRY;

Crowley, A. J., 1939, The relationship of the Hinckley Sandstone to the St. Croix Series [M.S. thesis]: University of Minnesota, Minneapolis CAMBRIAN; CLASTIC-ROCKS; HINCKLEY-SANDSTONE; MINNESOTA; PALEOZOIC; PHANEROZOIC; SAINT CROIX SERIES; SANDSTONE; SEDIMENTARY-PETROLOGY; SEDIMENTARY-ROCKS; SEDIMENTS; UNITED-STATES; UPPER-CAMBRIAN;

Crowley, A. J., and Thiel, G. A., 1940, Precambrian and Cambrian relations in east-central Minnesota: American Association of Petroleum Geologists Bulletin, v. 24, p. 747-749. CAMBRIAN; CLASTICS; DRILL HOLE; HINCKLEY-SANDSTONE; MINNESOTA; MT. SIMON SANDSTONE; OUTCROP; PALEOZOIC; PHANEROZOIC; SEDIMENTARY-ROCKS; SEDIMENTS; UNITED-STATES;

Culshaw, N. G., Check, G., Corrigan, D., Jamieson, R. A., Reynolds, P. H., Wallace, P., Wodicka, N., and Mortensen, J. K., 1989, The geological face of GLIMPCE Line J (far east end) a transect across the Britt Domain, Grenville Province of Ontario [abs.]: Eos (American Geophysical Union Transactions), v. 70, no. 15, p. 271. BRITT DOMAIN; CANADA; EVOLUTION; FOLDING; FOLDS; GEOCHRONOLOGY; GEOLOGY; GEOPHYSICS; GLIMPCE; GRENVILLE PROVINCE; LAKE SUPERIOR; METAMORPHISM; ONTARIO; REFLECTION; SEISMIC; SEISMIC LINE J; SEISMIC-SURVEYS; STRUCTURAL-GEOLOGY; UNITED-STATES;

Currie, K. L., 1976, The alkaline rocks of Canada:, Geological Survey of Canada, Bulletin 239, 228 p. ALKALIC COMPLEX; ALKALINE; CANADA; CARBONATITE; INTRUSIVE; LOWER-PROTEROZOIC; ONTARIO; REGIONAL; SUPERIOR PROVINCE;

---, 1980, A contribution to the petrology of the Coldwell alkaline complex, northern Ontario:, Geological Survey of Canada, Bulletin 287, 42 p. AGE DATING; ALKALIC COMPLEX; ALKALINE; ALKALINE INTRUSION; BIOTITE; CANADA; COLDWELL COMPLEX; DISTRICT OF THUNDER BAY; GEOCHRONOLOGY; GEOLOGY; MINERAL AGES; ONTARIO; PETROLOGY; PORT COLDWELL; POTASSIUM-ARGON; SUPERIOR PROVINCE;

39 Czamanske, G. K., Bennett, P. C., Zientek, M. L., Weiblen, P. W., Havach, G. A., and Foose, M. P., 1986, Comprehensive bibliographies on mineralized and unmineralized layered mafic intrusions in the United States:, U. S. Geological Survey, Open-File Report 86-589-A, ARCHEAN; BEARTOOTH MOUNTAINS; BIBLIOGRAPHY; COPPER; DULUTH COMPLEX; LAYERED INTRUSION; MINERALIZATION; MINNESOTA; MONTANA; NICKEL; PALLADIUM; PGE; PLATINUM-GROUP ELEMENTS; STILLWATER COMPLEX; UNITED-STATES;

Dahl, R., McGoran, J. W., and Watkinson, D. H., 1986, The Coldwell Complex platinum-group-element deposit: 1. Geological relationships of layered gabbroic host rocks [abs.]: Geological Association of Canada/Mineralogical Association of Canada Program with Abstracts, v. 11, p. 61. ALKALIC COMPLEX; ALKALINE; ALKALINE INTRUSION; CANADA; COLDWELL COMPLEX; DISTRICT OF THUNDER BAY; GEOLOGY; IGNEOUS LAYERING; MARATHON; ONTARIO; ORE DEPOSIT; PGE; PLATINUM-GROUP ELEMENTS; PORT COLDWELL; SUPERIOR PROVINCE;

Dahl, R., Watkinson, D. H., and McGoran, J. W., 1987, Two Duck Lake intrusion, Coldwell alkaline complex, Ontario: 1. Geology and structure [abs.]: 33rd Annual Institute on Lake Superior Geology, Wawa, ONT, v. 33, p. 20. ALKALIC COMPLEX; ALKALINE; ALKALINE INTRUSION; CANADA; COLDWELL COMPLEX; DISTRICT OF THUNDER BAY; GEOLOGY; MARATHON; ONTARIO; PORT COLDWELL; STRUCTURAL-GEOLOGY; SUPERIOR PROVINCE; TWO DUCK LAKE INTRUSION;

---, 1987, Two Duck Lake intrusion, Coldwell alkaline complex, Ontario. II. Petrology and base metal/PGE geochemistry [abs.]: 33rd Annual Institute on Lake Superior Geology, Kenora, ONT, v. 33, p. 21. ALKALIC COMPLEX; ALKALINE; ALKALINE INTRUSION; BASE METALS; CANADA; COLDWELL COMPLEX; COPPER; DISTRICT OF THUNDER BAY; MARATHON; NICKEL; ONTARIO; PETROLOGY; PGE; PLATINUM-GROUP ELEMENTS; PORT COLDWELL; TWO DUCK LAKE INTRUSION;

Dahlberg, E. H., 1987, Drill core evaluation for platinum group mineral potential of the basal zone of the Duluth Complex, Minnesota:, Minnesota Department of Natural Resources, Division of Minerals, Report 255, 138 p. BIRCH LAKE; DRILL CORE; DULUTH COMPLEX; EXPLORATION; GEOCHEMISTRY; LAKE COUNTY; LAYERED INTRUSION; MINNESOTA; PGE; PLATINUM-GROUP ELEMENTS; PRECIOUS METALS; ST. LOUIS COUNTY; UNITED-STATES;

---, 1989, Lithochemistry of the platiniferous oxide-ultramafic association of the basal zone Duluth Complex, Birch Lake-Duval area [abs.], in Morey, G. B., ed., Workshop on the applicability of gold and platinum-group-element models in Minnesota:, Minnesota Geological Survey, Information Circular 30, p. 49-50. BIRCH LAKE; DU-15; DULUTH COMPLEX; GEOCHEMISTRY; GEOLOGY; ILMENITE; LAYERED INTRUSION; LITHOLOGY; MAGNETITE; MINNESOTA; OXIDE; PGE; PLATINUM-GROUP ELEMENTS; PRECIOUS METALS; SOUTH KAWISHIWI INTRUSION; SPINEL; ST. LOUIS COUNTY; ULTRAMAFIC; UNITED-STATES;

---, 1994, Platinum, palladium and gold distribution in B-horizon soils in the northwestern part of the Duluth Complex, Minnesota:, Minnesota Department of Natural Resources, Division of Minerals, Report 308, 15 p. B-HORIZON; DULUTH COMPLEX; EXPLORATION; GEOCHEMISTRY; GOLD; LAKE COUNTY; LAYERED INTRUSION; MINNESOTA; PALLADIUM; PGE; PLATINUM; PLATINUM-GROUP ELEMENTS; SOIL; ST. LOUIS COUNTY; UNITED-STATES;

Dahlberg, E. H., Frey, B. A., Gladen, L. W., Lawler, T. L., Malmquist, K. L., and McKenna, M. P., 1987, 1986-1987 Geodrilling report:, Minnesota Department of Natural Resources, Division of Minerals, Report 251, 179 p. DRILLING; DULUTH COMPLEX; GEOCHEMISTRY; LAYERED INTRUSION; MINNESOTA; UNITED-STATES;

Dahlberg, E. H., and Gladen, L. W., 1987, Comparison of oxide cumulates in the Birch Lake area of the Duluth Complex with PGE deposits [abs.]: Geological Society of America Abstracts with Programs, v. 19, no. 4, p. 195. BIRCH LAKE; CUMULATES; DU-15; DULUTH COMPLEX; LAKE COUNTY; LAYERED INTRUSION; MINNESOTA; OXIDE; PGE; PLATINUM-GROUP ELEMENTS; SOUTH KAWISHIWI INTRUSION; ST. LOUIS COUNTY; UNITED-STATES;

Dahlberg, E. H., and Saini-Eidukat, B., 1991, A chlorine-bearing phase in drill core of serpentinized troctolitic rocks of the Duluth Complex, Minnesota: The Canadian Mineralogist, v. 29, p. 239-244. ALTERATION; CHLORIDES; CHLORINE; DULUTH COMPLEX; LAYERED INTRUSION; MINNESOTA; SERPENTINIZATION; ST. LOUIS COUNTY; TROCTOLITE; TROCTOLITIC SERIES; UNITED-STATES;

Dahlberg, E. H., Saini-Eidukat, B., Peterson, D., Seyfried, W. E., and Weiblen, P. W., 1988, Evidence for precipitation from chlorine brines in drill core from the Duluth Complex [abs.]: 5th Annual State of Minnesota Current Activities Forum, Chisholm, MN, Minnesota Department of Natural Resources, Division of Minerals, Hibbing, MN BRINES; CHLORIDES; CHLORINE; DULUTH COMPLEX; LAYERED INTRUSION; MINNESOTA; ST. LOUIS COUNTY; UNITED-STATES;

Daly, R. A., 1917, The geology of Pigeon Point, Minnesota: American Journal of Science, v. 28, p. 423-448. DULUTH COMPLEX; GEOLOGY; LAYERED INTRUSION; MINNESOTA; PIGEON POINT; UNITED-STATES;

Daniels, P. A., and Elmore, R. D., 1980, Depositional setting of -oolite facies on a Keweenaw alluvial fan [abs.]: 26th Annual Institute on Lake Superior Geology, Eau Claire, WI, v. 26, p. 27. ALLUVIAL-FANS; COPPER HARBOR CONGLOMERATE; DEPOSITION; MICHIGAN; ORONTO-GROUP; SEDIMENTARY STRUCTURES; SEDIMENTARY-ROCKS; SEDIMENTATION; UPPER-PENINSULA;

Daniels, P. A., Jr., 1981, Lithologic and sedimentologic characteristics of the Copper Harbor Conglomerate, Nonesuch Shale and formations of northern Michigan and Wisconsin [abs.]: 27th Annual Institute on Lake Superior Geology, East Lansing, MI, v. 27, p. 17. ALLUVIAL-FANS; CONGLOMERATE; COPPER HARBOR CONGLOMERATE; DEPOSITION; FLUVIAL; FREDA-SANDSTONE; HOUGHTON-COUNTY; ISLE ROYALE; KEWEENAW COUNTY; KEWEENAW PENINSULA; LITHOLOGY; MICHIGAN; MODEL; NONESUCH SHALE; ONTONAGON-COUNTY; ORONTO-GROUP; PALEOCURRENTS; SANDSTONE; SEDIMENTARY STRUCTURES; SEDIMENTOLOGY; SHALE; THICKNESS; UNITED-STATES; UPPER-PENINSULA; VOLCANIC ROCKS; WISCONSIN;

40 ---, 1982, Upper Precambrian sedimentary rocks: , Michigan-Wisconsin, in Wold, R. J., and Hinze, W. J., eds., Geology and tectonics of the Lake Superior basin:, Geological Society of America, Memoir 156, p. 107-133. CLASTIC-ROCKS; COPPER HARBOR CONGLOMERATE; ENVIRONMENTAL-ANALYSIS; FREDA-SANDSTONE; MICHIGAN; NONESUCH SHALE; ORONTO-GROUP; SANDSTONE; SEDIMENTARY-PETROLOGY; SEDIMENTARY-ROCKS; SEDIMENTS; UNITED-STATES; UPPER-WISCONSIN;

---, 1986, Oronto Group; a petroliferous rift-fill sequence of the Mid-Continent rift system [abs.]: American Association of Petroleum Geologists Bulletin, v. 70, no. 5, p. 579. CLASTIC-ROCKS; CONTROLS; COPPER HARBOR CONGLOMERATE; FREDA-SANDSTONE; LITHOFACIES; MICHIGAN; NONESUCH SHALE; ORONTO-GROUP; RIFT; SANDSTONE; SEDIMENTARY-ROCKS; SEDIMENTATION; SEDIMENTS; STRATIGRAPHY; TECTONIC-CONTROLS; UNITED-STATES; WISCONSIN;

Davidson, A., 1989, Reflections on Grenville geology: Basis for interpreting GLIMPCE Seismic line J [abs.]: Eos (American Geophysical Union Transactions), v. 70, no. 15, p. 271. CANADA; CANADIAN SHIELD; GEOPHYSICS; GEORGIAN BAY; GLIMPCE; GRENVILLE OROGENY; GRENVILLE PROVINCE; LAKE SUPERIOR; ONTARIO; REFLECTION; SEISMIC; SEISMIC LINE J; SEISMIC-SURVEYS; UNITED-STATES;

Davidson, D. M., Jr., 1968, Geology of the Duluth Complex in the Perent Lake and Kawishiwi Lake quadrangles, Lake and Cook Counties, Minnesota [abs.]: 14th Annual Institute on Lake Superior Geology, Superior, WI, v. 14, p. 23. COOK COUNTY; COPPER; DULUTH COMPLEX; FRACTURES; GABBRO LAKE QUADRANGLE; GEOLOGY; GRANOPHYRE; KAWISHIWI LAKE; KAWISHIWI LAKE QUADRANGLE; LAKE COUNTY; LAYERED INTRUSION; MINNESOTA; NICKEL; PERENT LAKE; PERENT LAKE QUADRANGLE; STRUCTURAL- GEOLOGY; SULFIDES; UNITED-STATES;

---, 1969, Kawishiwi Lake quadrangle, Lake and Cook Counties, Minnesota: Minnesota Geological Survey, Miscellaneous Map Series (with text), Map M-7, scale 1:24,000. ANORTHOSITIC SERIES; COOK COUNTY; DULUTH COMPLEX; FELSIC SERIES; GEOLOGY; GRANOPHYRE; HORNFELS; KAWISHIWI LAKE; KAWISHIWI LAKE QUADRANGLE; LAKE COUNTY; LAKE SUPERIOR; LAYERED INTRUSION; MAP; MINNESOTA; SULFIDES; TROCTOLITIC SERIES; UNITED-STATES;

---, 1969, Perent Lake quadrangle, Lake County, Minnesota: Minnesota Geological Survey, Miscellaneous Map Series, Map M-8, scale 1:24,000. ANORTHOSITIC SERIES; DULUTH COMPLEX; FELSIC SERIES; GRANOPHYRE; LAKE COUNTY; LAYERED INTRUSION; MAP; MINNESOTA; PERENT LAKE; PERENT LAKE QUADRANGLE; PYRITE; SULFIDES; TROCTOLITIC SERIES; UNITED-STATES;

---, 1969, Felsic rock associations of the Duluth Complex [abs.]: 15th Annual Institute on Lake Superior Geology, Oshkosh, WI, v. 15, p. 11. COOK COUNTY; DULUTH COMPLEX; FELSIC SERIES; GRANOPHYRE; KAWISHIWI LAKE QUADRANGLE; KELSO MOUNTAIN QUADRANGLE; LAKE COUNTY; LAKE POLLY QUADRANGLE; LAYERED INTRUSION; MINNESOTA; PETROGRAPHY; UNITED- STATES;

---, 1969, Geology of the felsic rocks in the Duluth Complex, in Summary of fieldwork, 1969:, Minnesota Geological Survey, Information Circular 7, p. 20. DULUTH COMPLEX; FELSIC; FELSIC SERIES; GRANOPHYRE; LAYERED INTRUSION; MINNESOTA; UNITED-STATES;

---, 1970, Geology of eastern part of Duluth Complex, in Summary of fieldwork, 1970:, Minnesota Geological Survey, Information Circular 8, p. 17- 18. ANORTHOSITE; ANORTHOSITIC SERIES; COOK COUNTY; DULUTH COMPLEX; LAKE COUNTY; LAYERED INTRUSION; MINNESOTA; TROCTOLITE; TROCTOLITIC SERIES; UNITED-STATES;

---, 1971, A new view of the Duluth Complex, Minnesota [abs.]: 17th Annual Institute on Lake Superior Geology, Duluth, MN, v. 17, p. 13-14. DULUTH COMPLEX; LAYERED INTRUSION; MINNESOTA; UNITED-STATES;

---, 1972, Eastern part of the Duluth Complex, in Sims, P. K., and Morey, G. B., eds., Geology of Minnesota: A Centennial Volume: St. Paul, Minnesota Geological Survey, p. 354-360. ALICE LAKE; ANORTHOSITE; ANORTHOSITIC SERIES; AUGITE; BETH LAKE; BRULE LAKE; CHALCOPYRITE; CHEROKEE LAKE; COOK COUNTY; COPPER; CRAMER; DULUTH COMPLEX; EAGLE MOUNTAIN; FARQUHAR; FELSIC SERIES; GEOPHYSICS; GILLIS LAKE; GRAVITY; KAWISHIWI LAKE; KELSO MOUNTAIN; LAKE COUNTY; LAKE POLLY; LAYERED INTRUSION; LIMA MOUNTAIN; LONG ISLAND LAKE; MINERAL CHEMISTRY; MINNESOTA; NATHAN'S LAYERED SERIES; NICKEL; NORTHERN LIGHT LAKE; OLIVINE; PENTLANDITE; PERENT LAKE; PETROGRAPHY; PINE MOUNTAIN; PLAGIOCLASE; PYRRHOTITE; SAWBILL CAMP; STRUCTURAL-GEOLOGY; SULFIDE; SULFIDES; TAIT LAKE; TI; TITANIUM; TITANOMAGNETITE; TOFTE; TOM LAKE; TROCTOLITE; TROCTOLITIC SERIES; TUSCARORA INTRUSION; UNITED-STATES; VOLCANIC;

---, 1972, Petrology of the intermediate and felsic rocks, eastern Duluth Complex, Minnesota [abs.]: Geological Society of America Abstracts with Programs, v. 4, p. 484. COOK COUNTY; DULUTH COMPLEX; FELSIC; FELSIC SERIES; LAYERED INTRUSION; MINNESOTA; PETROLOGY; UNITED-STATES;

---, 1977, Kelso Mountain quadrangle, Cook County, Minnesota: Minnesota Geological Survey, Miscellaneous Map Series, Map M-27, scale 1:24,000. ANORTHOSITIC SERIES; COOK COUNTY; DULUTH COMPLEX; EARLY MAFIC SERIES; GRANOPHYRE; KELSO MOUNTAIN; KELSO MOUNTAIN QUADRANGLE; LAYERED INTRUSION; MAP; MINNESOTA; NORTH SHORE VOLCANIC GROUP; UNITED-STATES; VOLCANIC ROCKS; WINE LAKE; WINE LAKE INTRUSION;

---, 1977, Beth Lake quadrangle, Cook County, Minnesota: Minnesota Geological Survey, Miscellaneous Map Series, Map M-26, scale 1:24,000. ANORTHOSITIC SERIES; BETH LAKE; BETH LAKE QUADRANGLE; COOK COUNTY; DULUTH COMPLEX; EARLY MAFIC SERIES; FELSIC SERIES; LAYERED INTRUSION; MAP; MINNESOTA; NORTH SHORE VOLCANIC GROUP; UNITED-STATES; VOLCANIC ROCKS;

---, 1977, Cherokee Lake quadrangle, Cook County, Minnesota: Minnesota Geological Survey, Miscellaneous Map Series, Map M-30, scale 1:24,000. ANIMIKIE; ANIMIKIE GROUP; ANORTHOSITIC SERIES; CHEROKEE LAKE; CHEROKEE LAKE QUADRANGLE; COOK COUNTY; DULUTH COMPLEX; EARLY MAFIC SERIES; FELSIC SERIES; LAYERED INTRUSION; LOWER-PROTEROZOIC; MINNESOTA; NORTH

41 SHORE VOLCANIC GROUP; SEDIMENTARY-ROCKS; TROCTOLITIC SERIES; TUSCARORA INTRUSION; UNITED-STATES; VIRGINIA FORMATION; VOLCANIC ROCKS;

42 ---, 1977, Eagle Mountain quadrangle, Cook County, Minnesota: Minnesota Geological Survey, Miscellaneous Map Series, Map M-28, scale 1:24,000. ANORTHOSITIC SERIES; COOK COUNTY; DIABASE; DULUTH COMPLEX; EAGLE MOUNTAIN; EAGLE MOUNTAIN QUADRANGLE; EARLY MAFIC SERIES; FELSIC SERIES; GRANOPHYRE; LAYERED INTRUSION; MAP; MINNESOTA; NORTH SHORE VOLCANIC GROUP; UNITED-STATES; VOLCANIC ROCKS;

---, 1977, Pine Mountain quadrangle, Cook County, Minnesota: Minnesota Geological Survey, Miscellaneous Map Series, Map M-31, scale 1:24,000. ANORTHOSITIC SERIES; COOK COUNTY; DULUTH COMPLEX; EARLY MAFIC SERIES; FELSIC SERIES; GRANOPHYRE; LAYERED INTRUSION; MAP; MINNESOTA; NORTH SHORE VOLCANIC GROUP; PINE MOUNTAIN; PINE MOUNTAIN QUADRANGLE; UNITED- STATES; VOLCANIC ROCKS;

---, 1977, Lake Polly quadrangle, Lake and Cook Counties, Minnesota: Minnesota Geological Survey, Miscellaneous Map Series, Map M-34, scale 1:24,000. ANORTHOSITIC SERIES; COOK COUNTY; DULUTH COMPLEX; FELSIC SERIES; LAKE COUNTY; LAKE POLLY; LAKE POLLY QUADRANGLE; LAYERED INTRUSION; MAP; MINNESOTA; NORTH SHORE VOLCANIC GROUP; TROCTOLITIC SERIES; TUSCARORA INTRUSION; UNITED-STATES; VOLCANIC ROCKS;

---, 1977, Alice Lake quadrangle, Lake County, Minnesota: Minnesota Geological Survey, Miscellaneous Map Series, Map M-33, scale 1:24,000. ALICE LAKE; ALICE LAKE QUADRANGLE; ANORTHOSITIC SERIES; DULUTH COMPLEX; EARLY MAFIC SERIES; FELSIC SERIES; LAKE COUNTY; LAYERED INTRUSION; MAP; MINNESOTA; NORTH SHORE VOLCANIC GROUP; TROCTOLITIC SERIES; TUSCARORA INTRUSION; UNITED-STATES; VOLCANIC ROCKS;

---, 1977, Lima Mountain quadrangle, Cook County, Minnesota: Minnesota Geological Survey, Miscellaneous Map Series, Map M-32, scale 1:24,000. ANORTHOSITIC SERIES; COOK COUNTY; DIABASE; DULUTH COMPLEX; EARLY MAFIC SERIES; ESKER; FELSIC SERIES; GLACIAL GEOLOGY; GRANOPHYRE; LAYERED INTRUSION; LIMA MOUNTAIN; LIMA MOUNTAIN QUADRANGLE; MAP; MINNESOTA; NORTH SHORE VOLCANIC GROUP; TWIN LAKES; UNITED-STATES; VOLCANIC ROCKS;

---, 1980, Geological evidence relating to the interpretation of the Lake Superior basin structure [abs.]: 26th Annual Institute on Lake Superior Geology, Eau Claire, WI, v. 26, p. 32. ARCHEAN; CANADA; FAULTS; LAKE SUPERIOR REGION; STRUCTURAL-GEOLOGY; UNITED- STATES; VOLCANIC ROCKS;

---, 1982, Geological evidence relating to interpretation of the Lake Superior Basin structure, in Wold, R. J., and Hinze, W. J., eds., Geology and tectonics of the Lake Superior Basin:, Geological Society of America, Memoir 156, p. 5-14. BAYFIELD-GROUP; DEPOSITION; FAULTS; FOLDING; GEOLOGY; LAKE SUPERIOR; ORONTO-GROUP; RIFT BASIN; SEDIMENTARY-ROCKS; SEDIMENTATION; SIBLEY GROUP; STRUCTURAL-GEOLOGY; SUBSIDENCE; VOLCANISM;

Davidson, D. M., Jr., and Burnell, J. R., 1977, Brule Lake quadrangle, Cook County, Minnesota: Minnesota Geological Survey, Miscellaneous Map Series, Map M-29, scale 1:24,000. ANIMIKIE; ANIMIKIE BASIN; ANIMIKIE GROUP; ANORTHOSITIC SERIES; BRULE LAKE; BRULE LAKE QUADRANGLE; COOK COUNTY; DIABASE; DULUTH COMPLEX; EARLY MAFIC SERIES; FELSIC SERIES; LAYERED INTRUSION; LOWER-PROTEROZOIC; MAP; MINNESOTA; NORTH SHORE VOLCANIC GROUP; SEDIMENTARY-ROCKS; UNITED- STATES; VIRGINIA FORMATION; VOLCANIC ROCKS;

Davidson, D. M., Jr., Halls, H., and Burnell, J. R., Jr., 1976, Paleomagnetism of the late Precambrian Brule Lake Intrusions, Cook County, Minnesota [abs.]: 22nd Annual Institute on Lake Superior Geology, St. Paul, MN, v. 22, p. 18. BRULE LAKE; BRULE LAKE INTRUSIONS; COOK COUNTY; DULUTH COMPLEX; GEOPHYSICS; MINNESOTA; PALEOMAGNETISM; UNITED-STATES;

Davidson, D. M., Jr., and Mudrey, M. G., Jr., 1986, Resource evaluation; Petroleum exploration potential of the Midcontinent Rift, U.S.A: Geoscience Wisconsin, v. 11, p. 63. ECONOMIC GEOLOGY; EXPLORATION; HORSTS; MIGRATION; NONESUCH SHALE; ORONTO-GROUP; PETROLEUM; RESERVOIR-ROCKS; SEDIMENTARY-ROCKS; SEDIMENTS; SOLOR CHURCH FORMATION; SOURCE-ROCKS; STRATIGRAPHIC-CONTROLS; STRUCTURAL-TRAPS; TRAPS;

---, 1986, Mid-Continent Rift: New frontier in an old area [abs.]: American Association of Petroleum Geologists Bulletin, v. 70, p. 579. EXPLORATION; GAS; HYDROCARBONS; OIL; PETROLEUM; UNITED-STATES; WISCONSIN;

Davidson, E. L., 1979, The relationships between the petrology, mineralogy, and sulfide mineralization in a portion of the Duluth Complex, Minnesota [M.S. Thesis]: University of Wisconsin, Madison, 70 p. DRILL HOLES; 10065; 10093; B1-162; B1-232; B1-316; B1-402; B1-406; B1-73; A DRIFT; ANIMIKIE; ANIMIKIE GROUP; ASSIMILATION; B DRIFT; BABBITT; COPPER; CRYSTALLIZATION; DULUTH COMPLEX; LAYERED INTRUSION; LOCAL BOY; LOWER-PROTEROZOIC; MINERAL CHEMISTRY; MINERAL DEPOSIT; MINERALIZATION; MINERALOGY; MINNAMAX; MINNESOTA; NICKEL; OLIVINE; ORE DEPOSIT; PARTRIDGE RIVER INTRUSION; PETROLOGY; PLAGIOCLASE; SEDIMENTARY-ROCKS; ST. LOUIS COUNTY; SULFIDE; SULFIDES; TIGER BOY; UNITED-STATES; UPDIP BATHTUB; VIRGINIA FORMATION;

Davidson, E. S., Espenshade, G. H., White, W. S., and Wright, J. C., 1955, Bedrock geology of the Mohawk quadrangle, Michigan: U. S. Geological Survey, Geologic Quadrangle, Map GQ-54, scale 1:24,000. GEOLOGY; MAP; MICHIGAN; MOHAWK QUADRANGLE; UNITED-STATES; UPPER-PENINSULA;

43 Davis, D. W., Green, J. C., and Manson, M., 1995, Geochronology of the 1.1 Ga North America Mid-Continent Rift [abs.]: 41st Annual Institute on Lake Superior Geology, Marathon, ONT, v. 41, p. 9-10. AGATE POINT RHYOLITE; ALKALIC COMPLEX; ALKALINE; ALKALINE INTRUSION; CANADA; CHICAGO BAY LAVAS; COLDWELL COMPLEX; COPPER HARBOR CONGLOMERATE; DISTRICT OF ALGOMA; DISTRICT OF THUNDER BAY; DULUTH COMPLEX; FELSIC; GEOCHRONOLOGY; GEOPHYSICS; HOVLAND LAVAS; KANSAS; LOGAN SILLS; MAMAINSE POINT; MAMAINSE POINT FORMATION; MICHIGAN; MICHIPICOTEN ISLAND; MINNESOTA; NATHAN'S LAYERED SERIES; NORMAL MAGNETIZATION; NORMAL POLARITY; NORTH SHORE VOLCANIC GROUP; ONTARIO; ORONTO-GROUP; OSLER GROUP; PALEOMAGNETISM; POLAR-WANDERING; PORT COLDWELL; PORTAGE LAKE; POWDER MILL GROUP; REVERSE MAGNETIZATION; REVERSE POLARITY; SILLS; UNITED-STATES; UPPER-PENINSULA; URANIUM-LEAD; VOLCANISM; ZIRCON;

Davis, D. W., and Paces, J. B., 1990, Time resolution of geologic events on the Keweenaw Peninsula and implications for development of the Midcontinent rift system: Earth and Planetary Science Letters, v. 97, no. 1-2, p. 54-64. AGE DATING; COPPER HARBOR CONGLOMERATE; GEOCHRONOLOGY; GEOPHYSICS; KEWEENAW COUNTY; KEWEENAW PENINSULA; MICHIGAN; ORONTO-GROUP; PALEOMAGNETISM; PORTAGE LAKE VOLCANICS; SEDIMENTARY-ROCKS; SEDIMENTS; UNITED-STATES; UPPER-PENINSULA; ZIRCON;

Davis, D. W., and Sutcliffe, R. H., 1985, U-Pb ages from the Nipigon plate and northern Lake Superior: Geological Society of America Bulletin, v. 96, p. 1572-1579. AGATE POINT RHYOLITE; AGE DATING; CANADA; DIABASE; DISTRICT OF THUNDER BAY; ENGLISH BAY GRANITE; GEOCHRONOLOGY; INTRUSIVE; LAKE NIPIGON; LOGAN SILLS; NIPIGON PLATE; ONTARIO; OSLER GROUP; PENOKEAN; URANIUM-LEAD; VOLCANIC; VOLCANIC ROCKS;

DeGraff, J. M., 1976, Structural and age relationships at the Lac La Belle magnetic anomaly, Keweenaw County, Michigan [abs.]: 22nd Annual Institute on Lake Superior Geology, St. Paul, MN, v. 22, p. 19-20. AGE; AGE DATING; BOUNDARY; CAMBRIAN; DISPLACEMENTS; FAULTS; GEOCHRONOLOGY; GEOPHYSICS; JACOBSVILLE-SANDSTONE; KEWEENAW COUNTY; LAC LA BELLE; MAGNETIC- ANOMALIES; MAGNETICS; MICHIGAN; PALEOZOIC; PHANEROZOIC; PORTAGE LAKE VOLCANICS; SANDSTONE; SEDIMENTARY- ROCKS; SEDIMENTS; STRATIGRAPHY; STRUCTURAL-GEOLOGY; TECTONICS; THRUST-FAULTS; UNITED-STATES; UPPER- PENINSULA;

---, 1976, Structural and age relationships of rocks associated with the Lac La Belle magnetic anomaly, Keweenaw County [M.S. Thesis]: Michigan Technological University, Houghton, 130 p. GEOPHYSICS; KEWEENAW COUNTY; LAC LA BELLE; MAGNETIC-ANOMALIES; MAGNETICS; MICHIGAN; STRUCTURAL-GEOLOGY; UNITED-STATES; UPPER-PENINSULA;

Dell, C. I., 1975, Relationships of till to bed rock in the Lake Superior region: Geology, v. 3, no. 10, p. 563-564. BAYFIELD-GROUP; CAMBRIAN; CENOZOIC; CLASTICS; COMPOSITION; GRAY; JACOBSVILLE-SANDSTONE; LAKE SUPERIOR; PALEOZOIC; PHANEROZOIC; PLEISTOCENE; QUATERNARY; RED; SANDSTONE; SEDIMENTARY-PETROLOGY; SEDIMENTARY-ROCKS; SEDIMENTS; TERRIGENOUS; TILL; UNITED-STATES; UPPER-PRECAMBRIAN;

Denechaud, E. B., 1969, Rare-earth activation analysis: Improvement and application to Stretishorn dike and Duluth Complex [Ph.D. Dissertation]: University of Wisconsin, Madison, 159 p. ANALYTICAL TECHNIQUES; BALD EAGLE INTRUSION; DIKE; DULUTH COMPLEX; GEOCHEMISTRY; ICELAND; LAYERED INTRUSION; MINNESOTA; RARE-EARTH ELEMENTS; REE; STRETISHORN DIKE; UNITED- STATES;

Dennen, W. H., and Puckett, A. N., 1972, On the chemistry and colour of amethyst: The Canadian Mineralogist, v. 11, no. 2, p. 448-456. AMETHYST; BRAZIL; CANADA; COLOR; CZECH REPUBLIC; DISTRICT OF THUNDER BAY; GEOCHEMISTRY; JAPAN; MEXICO; MINERALOGY; MONTANA; NEW MEXICO; NOVA SCOTIA; ONTARIO; TRACE ELEMENTS ANALYSES; UNITED-STATES; VIRGINIA;

Denning, R. M., 1949, The petrology of the Jacobsville Sandstone, Lake Superior [M.S. Thesis]: Michigan Technological University, Houghton, 71 p. CAMBRIAN; CLASTIC-ROCKS; JACOBSVILLE-SANDSTONE; LAKE SUPERIOR; MICHIGAN; PALEOZOIC; PHANEROZOIC; SANDSTONE; SEDIMENTARY-PETROLOGY; SEDIMENTARY-ROCKS; SEDIMENTS; STRATIGRAPHY; UNITED-STATES; UPPER- PENINSULA;

DePaolo, D. J., and Wasserburg, G. J., 1976, Inferences about magma sources and mantle structure from variations of 143Nd/144Nd: Geophysical Research Letters, v. 3, p. 743-746. AFRICA; ALKALINE BASALT; ALKALINE INTRUSION; ANORTHOSITE; CALIFORNIA; CARBONATITE; COLUMBIA RIVER PROVINCE; ; DULUTH COMPLEX; FISKENAESSET ANORTHOSITE; FLOOD BASALTS; GALAPAGOS ISLAND; GREENLAND; HAWAII; INDIA; KAROO; LAYERED INTRUSION; LOUIS LAKE GRANODIORITE; MANTLE; MID-ATLANTIC RIDGE; MID-OCEAN RIDGE BASALTS; MINNESOTA; MORB; MOZAMBIQUE; NEODYMIUM ISOTOPES; NEPHELINITE; NEW JERSEY; NEW MEXICO; OLIVINE BASALT; PALISADES SILL; RADIOGENIC ISOTOPES; RHYOLITE; RIO GRANDE RIFT; RUBIDIUM-STRONTIUM; SAMARIUM-NEODYMIUM; SHONKINITE; SOUTH AFRICA; STORMBERG LAVAS; STRONTIUM ISOTOPES; STRUCTURAL-GEOLOGY; TANZANIA; TEXAS; THOLEIITE; TOWN MOUNTAIN GRANITE; UNITED-STATES; WASHINGTON; WIND RIVER MOUNTAINS; WYOMING; YAKIMA BASALTS;

Dickas, A. B., 1984, Midcontinent Rift System: Precambrian hydrocarbon target: Oil and Gas Journal, v., p. 151-159. EXPLORATION; GAS; HYDROCARBONS; OIL; UNITED-STATES;

44 ---, 1984, 'Old' ideas challenged in Wisconsin: American Association of Petroleum Geologists Explorer, v., p. 16-18,29. AMNICON FALLS; ASHLAND COUNTY; BAYFIELD-COUNTY; DOUGLAS-FAULT; DRILLING; EXPLORATION; FAULTS; FOND DU LAC FORMATION; FREDA-SANDSTONE; GAS; GEOPHYSICS; GRAVITY; HORSTS; HYDROCARBONS; IOWA; IRON-COUNTY; KEWEENAWAN- SUPERGROUP; LAKE OWEN FAULT; MAGNETICS; NONESUCH SHALE; OIL; ORONTO-GROUP; POLK-COUNTY; PRICE COUNTY; SAINT CROIX HORST; SANDSTONE; SEDIMENTARY-BASINS; SEISMIC; SEISMIC-SURVEYS; SOLAR CHURCH FORMATION; ST. CROIX COUNTY; STRUCTURAL-GEOLOGY; UNITED-STATES; WISCONSIN;

---, 1985, Comparative Precambrian stratigraphy along the Midcontinent Rift trend [abs.]: Geological Society of America Abstracts with Programs, v. 17, p. 284. CLASTIC-ROCKS; COPPER; DAKOTA COUNTY; ECONOMIC GEOLOGY; FUEL-RESOURCES; HINCKLEY; HINCKLEY- SANDSTONE; KEWEENAWAN-SERIES; MICHIGAN; MICHIGAN COPPER DISTRICT; ONTONAGON-COUNTY; SEDIMENTARY-ROCKS; SEDIMENTS; SHALE; SOLAR CHURCH FORMATION; STRATIGRAPHY; UNITED-STATES; UPPER-PENINSULA; WHITE PINE MINE; WISCONSIN;

---, 1986, Comparative Precambrian stratigraphy and structure along the Mid-Continent Rift: American Association of Petroleum Geologists Bulletin, v. 70, no. 3, p. 225-238. BAYFIELD-GROUP; GEOPHYSICAL-SURVEYS; GEOPHYSICS; GRAVITY-SURVEYS; KANSAS; LAKE SUPERIOR; NONESUCH SHALE; ORONTO-GROUP; PALEOGEOGRAPHY; SEDIMENTARY-ROCKS; SEDIMENTS; STRATIGRAPHY; STRUCTURAL-GEOLOGY; TECTONICS; UNITED-STATES;

---, 1986, Local geologic issues impacting exploration; Interpretation of the western Lake Superior gravity low: Geoscience Wisconsin, v. 11, p. 53-58. BAYFIELD-COUNTY; GEOPHYSICAL-SURVEYS; GEOPHYSICS; GRAVITY-ANOMALIES; GRAVITY-SURVEYS; IGNEOUS-ROCKS; LAKE SUPERIOR; MICHIGAN; SEDIMENTARY-ROCKS; SEDIMENTS; UNITED-STATES; WISCONSIN;

---, 1986, Setting and evolution of the Midcontinent Rift; Midcontinent rift as a frontier hydrocarbon target: Geoscience Wisconsin, v. 11, p. 15-19. CLAY-COUNTY; ECONOMIC GEOLOGY; EXPLORATION; FUEL-RESOURCES; IOWA; KANSAS; MINNESOTA; PETROLEUM; SEDIMENTARY-ROCKS; SEDIMENTS; STRATIGRAPHY; UNITED-STATES; WISCONSIN;

---, 1986, Upper Keeweenawan stratigraphy; Extent of Oronto Group: Geoscience Wisconsin, v. 11, p. 32-38. BAYFIELD-GROUP; DOUGLAS- COUNTY; ECONOMIC GEOLOGY; MICHIGAN; NONESUCH SHALE; NORTHERN-WISCONSIN; ORONTO-GROUP; PETROLEUM; RESERVOIR-ROCKS; SAWYER COUNTY; SEDIMENTARY; SEDIMENTARY-ROCKS; SEDIMENTS; STRATIGRAPHY; UNITED-STATES; WISCONSIN;

---, 1986, Local geologic issues impacting exploration; Nature of the northern boundary of the St. Croix Horst: Geoscience Wisconsin, v. 11, p. 39-44. ASHLAND COUNTY; BAYFIELD-COUNTY; DOUGLAS-FAULT; FAULTS; HASTINGS-FAULT; HORSTS; ISLE ROYALE FAULT; KEWEENAW FAULT; LAKE OWEN FAULT; REVERSE-FAULTS; SAINT CROIX HORST; SEDIMENTARY-ROCKS; SEDIMENTS; STRUCTURAL-GEOLOGY; SYSTEMS; UNITED-STATES; WISCONSIN;

---, 1986, Seismologic evidence of arrested stage development of the Midcontinent Rift: Geoscience Wisconsin, v. 11, p. 45-52. COCORP; GEOPHYSICS; IOWA; KANSAS; MICHIGAN; MINNESOTA; MODEL; MODELLING; PLATE TECTONICS; REFLECTION; SEISMIC; SEISMIC-SURVEYS; UNITED-STATES; WISCONSIN;

---, 1986, Worldwide distribution of Precambrian hydrocarbon deposits: Geoscience Wisconsin, v. 11, p. 8-13. AMADEUS BASIN; ASIA; AUSTRALIA; BELT SERIES; BOHAI BAY BASIN; CHANGCHENG FORMATION; CHINA; CONDENSATE; COPPER; DENGYING FORMATION; FLATHEAD COUNTY; GAS; GILSONITE; HEBEI PROVINCE; HYDROCARBONS; IRKUTSK; IRKUTSK PETROLEUM PROVINCE; KAIROVO FORMATION; KALTASA FORMATION; MARKOVO HORIZON; MICHIGAN; MICHIGAN COPPER DISTRICT; MONTANA; MOTKA SUITE; NONESUCH SHALE; NORTH CHINA BASIN; OIL; ONTONAGON-COUNTY; ORONTO-GROUP; PARFENOVO HORIZON; PEOPLES REPUBLIC OF CHINA; PETROLEUM; PRITCHARD FORMATION; RENQUI OIL FIELD; RIPHEAN; RUSSIA; SEDIMENTARY-ROCKS; SIBERIA; SIBERIAN PLATFORM; SICHUAN BASIN; SICHUAN PROVINCE; SINIAN; SOUTH AUSTRALIA; UNITED-STATES; UPPER-PENINSULA; UPPER-PROTEROZOIC; URAL-VOLGA REGION; USKAKOVKA SUITE; VENDIAN; WEIYUAN GAS FIELD; WHITE PINE MINE; WUMISHAN FORMATION; YARAKTIN HORIZON;

---, 1986, Extent of Oronto Group: Geoscience Wisconsin, v. 11, p. 32-38. ASHLAND COUNTY; ASHLAND-SYNCLINE; BAYFIELD BASIN; BAYFIELD-COUNTY; CLASTICS; COPPER HARBOR CONGLOMERATE; DOUGLAS-COUNTY; DOUGLAS-FAULT; HORSTS; HYDROCARBONS; LAKE SUPERIOR; MICHIGAN; NONESUCH SHALE; ORIENTA-FORMATION; ORONTO-GROUP; RED-BEDS; RIVER FALLS SYNCLINE; SAINT CROIX HORST; SEDIMENTARY-ROCKS; SEDIMENTS; STRUCTURAL-GEOLOGY; UNITED-STATES; UPPER- PENINSULA; WISCONSIN;

---, 1986, Nature of the northern boundary of the St. Croix Horst: Geoscience Wisconsin, v. 11, p. 39-44. AMNICON FALLS; AMNICON RIVER; ASHLAND COUNTY; BAYFIELD BASIN; BAYFIELD-COUNTY; BLACK RIVER; CHEQUAMEGON-BAY; COPPER CREEK; DOUGLAS- COUNTY; DOUGLAS-FAULT; FAULT; HASTINGS-FAULT; ISLE ROYALE FAULT; KEWEENAW FAULT; LAKE OWEN FAULT; MIDDLE RIVER; SAINT CROIX HORST; STRUCTURAL-GEOLOGY; UNITED-STATES; WISCONSIN;

---, 1986, Interpretation of the western Lake Superior gravity low: Geoscience Wisconsin, v. 11, p. 53-58. ASHLAND COUNTY; BAYFIELD BASIN; BAYFIELD-COUNTY; DOUGLAS-COUNTY; GEOPHYSICS; GRAVITY; GRAVITY-ANOMALIES; LAKE SUPERIOR; MODEL; MODELLING; STRUCTURAL-GEOLOGY; UNITED-STATES;

---, 1988, The control of extrusion and sedimentary patterns within Keweenawan age structures of the Lake Superior Basin by taphrogenesis, in Wollensak, M. S., ed., Upper Keweenawan rift-fill sequence, Mid-Continent Rift System, Michigan:, Michigan Basin Geological Society, Guidebook, 35th Field Conference, p. 81-94. MICHIGAN; SEDIMENTARY-ROCKS; SEDIMENTATION; STRUCTURAL-GEOLOGY; TAPHROGENESIS; UNITED-STATES; UPPER-PENINSULA; VOLCANIC ROCKS;

45 ---, 1992, Preliminary report, geology and geophysics of the Terra/Patrick #7-22 wildcat hydrocarbon test, midcontinent rift, Keystone Township, Bayfield County, Wisconsin [abs.]: 38th Annual Institute on Lake Superior Geology, Hurley, WI, v. 38, p. 25-26. ANTICLINE; BAYFIELD- COUNTY; BAYFIELD-GROUP; BOREHOLE; COPPER HARBOR CONGLOMERATE; DOUGLAS-FAULT; EXPLORATION; FAULT; FOLDING; FREDA-SANDSTONE; GAS; GEOLOGY; HORSTS; HYDROCARBONS; KEYSTONE TOWNSHIP; NONESUCH SHALE; OIL; ORONTO-GROUP; PETROLEUM; SANDSTONE; STRUCTURAL-GEOLOGY; TERRA/PATRICK NO. 7-22; UNITED-STATES; WISCONSIN;

---, 1995, Structural geometry of the Superior Zone, Midcontinent Rift System [abs.], in Ojakangas, R. W., Dickas, A. B., and Green, J. C., eds., Basement Tectonics 10: Proceedings of the Tenth International Conference on Basement Tectonics: Netherlands, Kluwer Academic Publishers, v. 4, p. 29-34. BAYFIELD-COUNTY; CANADA; HYDROCARBONS; KEWEENAWAN-SUPERGROUP; LAKE SUPERIOR REGION; MICHIGAN; MINNESOTA; ONTARIO; STRUCTURAL-GEOLOGY; UPPER-PENINSULA; WISCONSIN;

---, 1995, The association of hydrocarbon with basement rock of pre-Phanerozoic age, in Ojakangas, R. W., Dickas, A. B., and Green, J. C., eds., Basement Tectonics 10: Proceedings of the Tenth International Conference on Basement Tectonics: Netherlands, Kluwer Academic Publishers, v. 4, p. 283-295. ARUMBERA SANDSTONE; ASIA; AUSTRALIA; BARNEY CREEK FORMATION; CANADA; CHINA; DENGYING FORMATION; GAS; HYDROCARBONS; ; MICHIGAN; NONESUCH SHALE; ORONTO-GROUP; PEOPLES REPUBLIC OF CHINA; PERTATATAKA SANDSTONE; PRC; RUSSIA; SIBERIA; SICHUAN BASIN; UPPER-PENINSULA; UPPER-PROTEROZOIC; VELKERRI FORMATION;

Dickas, A. B., Bornhorst, T. J., Ojakangas, R. W., Green, J. C., Mudrey, M. G., Kalliokoski, J., and Paces, J. B., 1989, Lake Superior basin segment of the Midcontinent rift system, in Metamorphism and tectonics of eastern and central North America: Washington, D.C., American Geophysical Union, p. T344:1-T344:62. BESSEMER-QUARTZITE; EMPLACEMENT; ENVIRONMENT; FLUVIAL-ENVIRONMENT; INTRUSIONS; LAKE SUPERIOR REGION; MICHIGAN; NOPEMING-FORMATION; PUCKWUNGE FORMATION; SEDIMENTARY-ROCKS; SEDIMENTATION; SEDIMENTS; STRATIGRAPHY; UNITED-STATES; WISCONSIN;

Dickas, A. B., Frodesen, E. W., Kososki, B. A., and Wolosin, C. A., 1969, Relationships of regional magnetics to the bedrock geology of the South Range quadrangle, Douglas County, Wisconsin [abs.]: 15th Annual Institute on Lake Superior Geology, Oshkosh, WI, v. 15, p. 12-14. BEDROCK; CENOZOIC; DOUGLAS-COUNTY; DOUGLAS-FAULT; FAULTS; GABBRO; GEOLOGY; GEOPHYSICS; GLACIAL GEOLOGY; GROUND MAGNETIC SURVEY; MAGNETIC-SURVEYS; MAGNETICS; PHANEROZOIC; PLEISTOCENE; QUATERNARY; REGIONAL; SANDSTONE; SEDIMENTARY-ROCKS; SOUTH RANGE QUADRANGLE; STRUCTURAL-GEOLOGY; UNITED-STATES; VOLCANIC ROCKS; WISCONSIN;

Dickas, A. B., and Mudrey, M. G., Jr., 1988, A Midcontinent Rift model based upon Gregory Rift tectonic and sedimentation geometries [abs.]: Geological Society of America Abstracts with Programs, v. 20, no. 2, p. 96-97. BAYFIELD; FAULTS; GEOMETRY; GREGORY-RIFT; LAKE SUPERIOR; MICHIGAN; NORTHWESTERN-WISCONSIN; SEDIMENTARY-PETROLOGY; SEDIMENTARY-ROCKS; SEDIMENTATION; SEDIMENTS; TECTONICS; UNITED-STATES; WISCONSIN;

---, 1989, Central North American case for segmented rift development [abs.]: 28th International Geological Congress, p. 1-396-1-397. ACCOMMODATION ZONE; RIFT BASIN; STRUCTURAL-GEOLOGY; TECTONICS; TRANSFORM FAULTS; UNITED-STATES;

---, 1989, Structural differentiation of the Midcontinent Rift System [abs.]: Eos (American Geophysical Union Transactions), v. 70, no. 15, p. 275. GEOPHYSICS; LAKE SUPERIOR; MODEL; SEISMIC; SEISMIC-SURVEYS; STRUCTURAL-GEOLOGY;

---, 1990, Fundamental undifferentiation of the Mid-Proterozoic Mid-continent Rift System, North America: Tectonophysics, v. . PROTEROZOIC;

---, 1992, Indigenous Precambrian hydrocarbon domains within a failed intracontinental rift; an economic model for Eastern U.S. Mesozoic basins [abs.]: Geological Society of America Abstracts with Programs, v. 24, no. 2, p. 12. ECONOMIC GEOLOGY; FREDA-SANDSTONE; GENESIS; HYDROCARBONS; LAKE SUPERIOR; MESOZOIC; MICHIGAN; NONESUCH SHALE; OIL; ORONTO-GROUP; PETROLEUM; RIFTING; SANDSTONE; SEDIMENTARY-ROCKS; SEDIMENTS; TECTONICS; TRIASSIC BASINS; UNITED-STATES;

---, 1992, The Lake Superior Oronto Group, a middle Proterozoic exploration model for the late Proterozoic Chuar Group of the Grand Canyon [abs.]: American Association of Petroleum Geologists Bulletin, v. 76, no. 4, p. 574. ARIZONA; CHUAR-GROUP; ECONOMIC GEOLOGY; EXPLORATION; LAKE SUPERIOR; MODELS; ORGANIC-CARBON; ORGANIC-MATERIALS; ORONTO-GROUP; PETROLEUM; SEDIMENTARY-ROCKS; SEDIMENTS; UNITED-STATES; UPPER-PROTEROZOIC;

---, 1992, Precambrian hydrocarbon potential of the western Great Lakes [abs.]: Geological Society of America Abstracts with Programs, v. 24, no. 4, p. 12. ECONOMIC GEOLOGY; GAS; HYDROCARBONS; KEWEENAWAN-SUPERGROUP; MICHIGAN; NONESUCH SHALE; OIL; ORONTO-GROUP; PETROLEUM; POTENTIAL-DEPOSITS; SEDIMENTARY-ROCKS; SEDIMENTS; UNITED-STATES; WISCONSIN;

---, 1992, The Lake Superior Oronto Group, a middle Proterozoic exploration model for the late Proterozoic Chuar Group of the Grand Canyon [abs.]: Southwest Section of American Association of Petroleum Geologists Transactions, v. 92-90, p. 290-291. ARIZONA; CHUAR-GROUP; ECONOMIC GEOLOGY; EXPLORATION; GRAND CANYON; MICHIGAN; ORONTO-GROUP; PETROLEUM; RIFTING; SEDIMENTARY- ROCKS; SEDIMENTATION; SEDIMENTS; UNITED-STATES; WISCONSIN;

---, 1992, Precambrian hydrocarbon potential of the western Great Lakes [abs.]: 38th Annual Institute on Lake Superior Geology, Hurley, WI, v. 38, p. 27. ANTICLINES; DRAG FOLDING; EXPLORATION; FAULTS; FOLDS; GAS; GEOPHYSICS; HYDROCARBONS; KEWEENAWAN- SUPERGROUP; MICHIGAN; NONESUCH SHALE; OIL; ORONTO-GROUP; PETROLEUM; POROSITY; SEISMIC; SEISMIC-SURVEYS; STRUCTURAL-GEOLOGY; UNITED-STATES; UPPER-PENINSULA;

Dickas, A. B., Mudrey, M. G., Jr., Ojakangas, R. W., and Shrake, D. L., 1992, A possible southeastern extension of the Midcontinent Rift System located in Ohio: Tectonics, v. 11, no. 6, p. 1406-1414. OHIO; UNITED-STATES;

46 Dickas, A. B., Surkov, V. S., and Mezhelovsky, N. V., 1991, The midcontinent rift system of the central United States of America: A model Precambrian (Proterozoic) extension structure: Soviet Geology, Ministry of Geology, USSR, September, 1991, p. 42-56. EXTENSION; PLATE TECTONICS; TECTONICS;

Diehl, J. F., and Haig, T. D., 1994, A paleomagnetic study of the lava flows within the Copper Harbor Conglomerate, Michigan - New results and implications: Canadian Journal of Earth Sciences, v. 31, p. 369-380. COPPER HARBOR CONGLOMERATE; GEOPHYSICS; KEWEENAW COUNTY; KEWEENAW PENINSULA; LAKE SHORE TRAPS; MAGNETIZATION; MICHIGAN; NONESUCH SHALE; ORONTO-GROUP; PALEOMAGNETIC POLE; PALEOMAGNETISM; POLAR-WANDERING; PORTAGE LAKE VOLCANICS; UNITED-STATES; UPPER- PENINSULA; VOLCANIC ROCKS;

Doane, V. L., 1956, Petrography of Nonesuch Shale, White Pine, Michigan [M.S. Thesis]: Michigan Technological University, Houghton CLASTIC-ROCKS; COPPER; MICHIGAN; MICHIGAN COPPER DISTRICT; NONESUCH SHALE; ONTONAGON-COUNTY; ORONTO- GROUP; PETROGRAPHY; SEDIMENTARY-ROCKS; SEDIMENTS; SHALE; STRATIGRAPHY; UNITED-STATES; UPPER-PENINSULA; WHITE PINE MINE;

Dobell, J. P., 1955, Sandstone dikes in Keweenawan lavas [abs.]: 1st Annual Institute on Lake Superior Geology, Minneapolis, MN, v. 1, p. 4. BETE GRISE BAY; CLASTICS; DIKES; FAULT; FRACTURES; JACOBSVILLE-SANDSTONE; KEWEENAW FAULT; KEWEENAW PENINSULA; MICHIGAN; SANDSTONE; SEDIMENTARY-ROCKS; STRUCTURAL-GEOLOGY; UNITED-STATES; UPPER-PENINSULA; VOLCANIC ROCKS;

Dolence, J. D., and Beebe, R. R., 1964, Investigation of copper-nickel mineralization in Gunflint Trail area, Cook County, Minnesota, in: Mines Experiment Station, University of Minnesota, Minneapolis, Progress Report 7, p. 2-4. COOK COUNTY; COPPER; DULUTH COMPLEX; GUNFLINT IRON-FORMATION; GUNFLINT TRAIL; LAYERED INTRUSION; MINERALIZATION; MINNESOTA; NICKEL; UNITED- STATES;

Donaldson, J. A., and Irving, E., 1972, Grenville Front and rifting of the Canadian Shield: Nature: Physical Science, v. 237, p. 139-140. ABITIBI DIKES; CANADA; CANADIAN SHIELD; DIKES; GRENVILLE OROGENY; GRENVILLE-FRONT; MACKENZIE DYKE SWARM; PLATE TECTONICS; RIFTING;

Dorr, J. A., Jr., and Eschman, D. F., 1973, Geology of Michigan: Ann Arbor, The University of Michigan Press, 473 p. ARCHEAN; CAMBRIAN; CENOZOIC; COPPER; DEVONIAN; ; GAS; GLACIAL GEOLOGY; HISTORY; LOWER PENINSULA; LOWER-PROTEROZOIC; MICHIGAN; MICHIGAN COPPER DISTRICT; MISSISSIPPIAN; NONESUCH SHALE; OIL; ONTONAGON-COUNTY; ORDOVICIAN; ORONTO-GROUP; PALEOZOIC; ; PETROLEUM; PHANEROZOIC; PLEISTOCENE; ; UNITED-STATES; UPPER-PENINSULA; WHITE PINE MINE;

Dosso, L., 1984, The nature of the subcontinental mantle: Isotopic study (strontium, lead, neodymium) of the Keweenawan volcanism of the north shore of Lake Superior [Ph.D. Dissertation]: University of Minnesota, Minneapolis, 221 p. FLOOD BASALTS; LAKE SUPERIOR; LEAD ISOTOPES; LEAD-LEAD; MANTLE; MINNESOTA; NEODYMIUM ISOTOPES; NORTH SHORE VOLCANIC GROUP; RADIOGENIC ISOTOPES; SAMARIUM-NEODYMIUM; STRONTIUM ISOTOPES; UNITED-STATES; VOLCANIC; VOLCANIC ROCKS;

Dosso, L., and Murthy, V. R., 1982, Keweenawan volcanism of the North Shore of Lake Superior [abs.]: Eos (American Geophysical Union Transactions), v. 63, p. 461. BASALTS; CONTAMINATION; CONTINENTAL CRUST; CRUST; LEAD ISOTOPES; MANTLE; MINNESOTA; NEODYMIUM ISOTOPES; NORTH SHORE VOLCANIC GROUP; RADIOGENIC ISOTOPES; STRONTIUM ISOTOPES; SUBCONTINENTAL; UNITED-STATES; VOLCANIC ROCKS;

---, 1985, The nature of the subcontinental mantle: Isotopic data (Sr, Nd, Pb) on the Keweenawan volcanism of the North Shore of Lake Superior [abs.]: Terra Cognita, v. 5, p. 207. FLOOD BASALTS; ISOTOPES; LEAD ISOTOPES; LEAD-LEAD; MANTLE; MINNESOTA; NEODYMIUM ISOTOPES; NORTH SHORE VOLCANIC GROUP; RADIOGENIC ISOTOPES; STRONTIUM ISOTOPES; SUBCONTINENTAL; UNITED- STATES; VOLCANIC; VOLCANIC ROCKS;

Dosso, L., Murthy, V. R., Sabelin, T., and Leeman, W. P., 1980, Nd and Sr isotopic systematics of Keweenawan volcanic rocks from the north shore of Lake Superior [abs.]: Eos (American Geophysical Union Transactions), v. 61, no. 17, p. 413. ISOTOPES; MANTLE; MINNESOTA; NEODYMIUM ISOTOPES; NORTH SHORE VOLCANIC GROUP; RADIOGENIC ISOTOPES; STRONTIUM ISOTOPES; UNITED-STATES; VOLCANIC; VOLCANIC ROCKS;

Dott, R. H., Jr., and Mattis, A. F., 1972, A post-Animikean-pre-Keweenawan transgressive sand blanket over the Lake Superior region [abs.]: Geological Society of America Abstracts with Programs, v. 4, p. 490-491. AGE; BARABOO-QUARTZITE; BARRON-QUARTZITE; BESSEMER- QUARTZITE; LAKE SUPERIOR; METAMORPHIC-ROCKS; METASEDIMENTARY; PETROLOGY; PUCKWUNGE-SANDSTONE; QUARTZITE; SEDIMENTARY-ROCKS; SEDIMENTS; SIBLEY-SANDSTONE; SIOUX-QUARTZITE; STRUCTURAL-GEOLOGY; UNITED- STATES;

Drahozval, J. A., 1992, The origin and geologic evolution of the East Continent Rift basin [abs.]: Geological Society of America Abstracts with Programs, v. 24, p. 330. ARENITE; BASALTS; BLOCK-STRUCTURES; EAST CONTINENT RIFT BASIN; EROSION; EVOLUTION; EXTENSIONAL TECTONICS; FOLDS; FORELAND-BASINS; GRENVILLE-FRONT; MICHIGAN-BASIN; MIDDLE RUN FORMATION; RIFTING; SEDIMENTARY-ROCKS; SEDIMENTS;

DuBois, P. M., 1955, Paleomagnetic measurements of the Keweenawan: Nature, v. 176, no. 4480, p. 506-507. GEOPHYSICS; PALEOMAGNETISM; PROTEROZOIC;

47 DuBois, P. M., 1959, Correlation of Keweenawan rocks of the Lake Superior district by paleomagnetic methods: Proceedings of the Geological Association of Canada, v. 11, p. 37-66. CANADA; GEOPHYSICS; PALEOMAGNETISM; UNITED-STATES;

Dubois, P. M., 1962, Paleomagnetism and correlation of Keweenawan rocks:, Geological Survey of Canada, Bulletin 71, 75 p. CORRELATION; GEOPHYSICS; PALEOMAGNETISM; PROTEROZOIC;

Dugan, J. P., and Ervin, P., 1977, Geophysical study of a gabbroic intrusion, Clam Lake, Wisconsin [abs.]: 23rd Annual Institute on Lake Superior Geology, Thunder Bay, ONT, v. 23, p. 14. AEROMAGNETICS; ASHLAND COUNTY; BOUGUER-ANOMALIES; CLAM LAKE; GEOPHYSICS; GRAVITY; ILMENITE; MAGNETITE; MELLEN COMPLEX; UNITED-STATES; WISCONSIN;

Duke, J. M., and Naldrett, A. J., 1982, Lower grade nickel sulfide resources, in Shanks, W. C., III, ed., Unconventional Mineral Deposits: New York, Society of Mining Engineers of the American Institute of Mining, Metallurgical, and Petroleum Engineers, Cameron Volume, p. 23-34. DULUTH COMPLEX; LAYERED INTRUSION; MINNESOTA; NICKEL; RESOURCE; SULFIDE; SULFIDES; UNITED-STATES;

---, 1983, Lower grade nickel sulfide resources, in Shanks, W. C., ed., Cameron volume on unconventional mineral deposits: New York, Society of Mining Engineers and American Institute of Mining, Metallurgy, and Petroleum Engineers, p. 23-34. AFRICA; ARCHEAN; BABBITT; CANADA; COPPER; CRYSTAL LAKE INTRUSION; DISTRICT OF THUNDER BAY; DULUTH COMPLEX; DUMONT SILL; DUNKA ROAD; FLOOD BASALTS; FRACTIONAL CRYSTALLIZATION; GREAT LAKES NICKEL; GREENSTONE BELTS; IGNEOUS-PROCESSES; IMMISCIBLE SULFIDE MELT; INSIZWA COMPLEX; JURASSIC; KAROO; KOMATIITE; LAKE COUNTY; MATURI; MESOZOIC; MINERAL DEPOSIT; MINERAL DEPOSITS; MINERALIZATION; MINNAMAX; MINNESOTA; MT. KEITH; NICKEL; ONTARIO; ORE DEPOSIT; ORE GRADE; PARDEE TOWNSHIP; PARTRIDGE RIVER INTRUSION; PARTRIDGE RIVER TROCTOLITE SERIES; PHANEROZOIC; RESOURCE; RIFTING; SOUTH AFRICA; SOUTH KAWISHIWI INTRUSION; SPRUCE ROAD; ST. LOUIS COUNTY; SULFIDES; ULTRAMAFIC; UNITED- STATES; WATER HEN;

Dunlavey, J. T., 1979, A petrologic and rock magnetic study of basaltic hornfels associated with the Duluth Complex, northeastern Minnesota [M.S. Thesis]: University of Minnesota, Minneapolis, 117 p. CONTACT METAMORPHISM; DULUTH COMPLEX; GEOPHYSICS; HORNFELS; LAYERED INTRUSION; MAGNETIC SUSCEPTIBILITY; MINNESOTA; PETROLOGY; UNITED-STATES;

---, 1982, A detailed study of a basalt inclusion in the Duluth Complex, near Babbitt, Minnesota [M.S. Thesis]: University of Minnesota, Minneapolis, 118 p. BABBITT; BASALT; CONTACT METAMORPHISM; COPPER; DULUTH COMPLEX; LAYERED INTRUSION; METAMORPHISM; MINERAL DEPOSIT; MINERALIZATION; MINNAMAX; MINNESOTA; NICKEL; NORTH SHORE VOLCANIC GROUP; ORE DEPOSIT; PARTRIDGE RIVER INTRUSION; PETROGRAPHY; PETROLOGY; ST. LOUIS COUNTY; SULFIDE; SULFIDES; UNITED-STATES; VOLCANIC ROCKS;

Dutton, C. E., and Bradley, R. E., 1970, Lithologic, geophysical, and mineral commodity maps of Precambrian rocks in Wisconsin: U. S. Geological Survey, Miscellaneous Geological Investigations, Map I-631, scale 1:500,000. ARCHEAN; GEOLOGY; GEOPHYSICS; IRON-FORMATION; LAKE OWEN FAULT; LITHOLOGY; LOWER-PROTEROZOIC; MAP; MAPS; MINERALS; PENOKEAN; UNITED-STATES; WISCONSIN;

---, 1971, Bibliography of Precambrian geology of Wisconsin 1778-1968: Madison, Geological and Natural History Survey of Wisconsin, Open File Report, 28 p. AEROMAGNETICS; ARCHEAN; BARABOO INTERVAL; BARABOO-QUARTZITE; BIBLIOGRAPHY; CAMBRIAN; COPPER; DICKINSON COUNTY; FLORENCE COUNTY; GEOCHRONOLOGY; GEOLOGY; GEOPHYSICS; GOGEBIC DISTRICT; GOGEBIC IRON RANGE; GROUNDWATER; IGNEOUS-ROCKS; IRON ORE; IRON-FORMATION; KEWEENAW FAULT; LOWER-PROTEROZOIC; MAPS; MARENISCO; MENOMINEE COUNTY; MENOMINEE DISTRICT; METAMORPHIC-ROCKS; METAMORPHISM; MICHIGAN; MINERALIZATION; PALEOZOIC; PHANEROZOIC; SEDIMENTARY-ROCKS; STRUCTURAL-GEOLOGY; UNITED-STATES; UPPER- PENINSULA; VOLCANIC ROCKS; WISCONSIN;

Dyer, W. S., 1938, Report on a copper deposit: Michipicoten Island: Thunder Bay, Ontario, Burrage Copper Mines, Private Report, 5 p. CANADA; COPPER; DISTRICT OF ALGOMA; MICHIPICOTEN ISLAND; NATIVE COPPER; ONTARIO; QUEBEC MINE;

Eames, H. H., 1866, Metalliferous region bordering on Lake Superior: St. Paul, MN, Press Printing Company, Report of the State Geologist, 23 p. ARCHEAN; BAPTISM RIVER; BEAVER RIVER; COOK COUNTY; COPPER; COTTONWOOD RIVER; DULUTH; EMBARRAS RIVER; ENCAMPMENT RIVER; ; GOLD; GOOSEBERRY RIVER; GREENSTONE BELTS; HEMATITE; IRON ORE; IRON- FORMATION; JAMES RIVER; JASPER; KNIFE RIVER; LAKE COUNTY; LAKE SUPERIOR; LITTLE MARAIS; MAGNETITE; MINERAL DEPOSITS; MINNESOTA; MINNESOTA RIVER; NORTH SHORE VOLCANIC GROUP; REDWOOD RIVER; SILVER; SPLIT ROCK RIVER; ST. LOUIS COUNTY; ST. LOUIS RIVER; STEWARTS RIVER; SUCKER RIVER; TEMPERANCE RIVER; TWO ISLAND RIVER; UNITED- STATES; VERMILION DISTRICT; VERMILION LAKE; VOLCANIC ROCKS;

Eastman, W., 1980, Defining the Minnamax orebody: Engineering and Mining Journal, v. 181, no. 2, p. 72-78. BABBITT; COPPER; DULUTH COMPLEX; LAYERED INTRUSION; LOCAL BOY; MINERAL DEPOSIT; MINERALIZATION; MINNAMAX; MINNESOTA; NICKEL; ORE DEPOSIT; PARTRIDGE RIVER INTRUSION; ST. LOUIS COUNTY; SULFIDE; SULFIDES; UNITED-STATES;

Eckstrand, O. R., and Cogulu, E. H., 1986, Se/S evidence relating to genesis of sulphides in the Crystal Lake Gabbro, Thunder Bay, Ontario [abs.]: Geological Association of Canada, v. 11, p. 66. CANADA; CRYSTAL LAKE INTRUSION; DISTRICT OF THUNDER BAY; GREAT LAKES NICKEL; MINNESOTA; ONTARIO; ORE GENESIS; PARDEE TOWNSHIP; SE/S; SELENIUM; SULFIDES; SULFUR; UNITED-STATES;

---, 1989, The role of sulphur contamination in magmatic Cu-Ni-PGE mineralization in the Crystal Lake intrusion, Thunder Bay area, Ontario [abs.]: Geological Society of Finland Bulletin, v. 61, p. 6-7. ASSIMILATION; CANADA; COPPER; CRYSTAL LAKE INTRUSION; DISTRICT OF THUNDER BAY; GREAT LAKES NICKEL; MAGMATIC; MINERALIZATION; MINNESOTA; NICKEL; ONTARIO; PARDEE TOWNSHIP; PGE; SULFUR; UNITED-STATES;

48 Eckstrand, O. R., Cogulu, E. H., and Scoates, R. F. J., 1989, Magmatic Ni-Cu-Pge mineralization in the Crystal Lake layered intrusion, Ontario and the Fox River sill, Manitoba [abs.], in Morey, G. B., ed., Workshop on the applicability of gold and platinum-group element models in Minnesota:, Minnesota Geological Survey, Information Circular 30, p. 45-46. CANADA; COPPER; CRYSTAL LAKE INTRUSION; DISTRICT OF THUNDER BAY; FOX RIVER; GREAT LAKES NICKEL; MAGMATIC; MANITOBA; MINERALIZATION; MINNESOTA; NICKEL; ONTARIO; PARDEE TOWNSHIP; PGE; UNITED-STATES;

Edwards, I., 1926, The sea caves of Devil's Island: Milwaukee Public Museum Yearbook, 1924, v. 4, p. 94-98. DEVIL'S-ISLAND; EROSION; PHYSICAL-GEOLOGY; SEA-CAVES; SEDIMENTARY-ROCKS; SEDIMENTS; UNITED-STATES; WISCONSIN;

Eger, P., and Lapakko, K., 1980, Environmental leaching of Duluth Gabbro under laboratory and field conditions: Oxidative dissolution of metal sulfide and silicate minerals: St. Paul, MN, Minnesota Department of Natural Resources, Division of Minerals, 340 p. BABBITT; COLUMN LEACHING; COPPER; DULUTH COMPLEX; DUNKA PIT; ENVIRONMENTAL; EXPERIMENTAL STUDIES; GEOCHEMISTRY; LAYERED INTRUSION; LEACHATES; LEACHING; LEACHING SOLUTIONS; MINERAL DEPOSIT; MINEWATER; MINNAMAX; MINNESOTA; NICKEL; PARTRIDGE RIVER INTRUSION; RECLAMATION; ST. LOUIS COUNTY; SULFIDES; TAILINGS; UNITED-STATES; WASTE ROCK; WATER CHEMISTRY;

Eglinton, G., Scott, P. M., Belsky, T., Burlingame, A. L., and Calvin, M., 1964, Hydrocarbons of biological origin from a one-billion-year-old sediment: Science, v. 145, no. 3629, p. 263-264. COPPER; DIAGENESIS; HYDROCARBONS; ISOPRENOID HYDROCARBONS; MARKER BED; MICHIGAN; MICHIGAN COPPER DISTRICT; NONESUCH SHALE; ONTONAGON-COUNTY; ORIGIN; ORONTO-GROUP; PHYTANE; PRISTANE; SEDIMENTS; UNITED-STATES; UPPER-PENINSULA; WHITE PINE MINE;

---, 1974, Hydrocarbons of biological origin from a one-billion-year-old sediment, in Kvenvolden, K. A., ed., Geochemistry and the origin of life: v. 14, p. 280. CHEMICAL-ANALYSIS; CHROMATOGRAPHY; COPPER; GEOCHEMISTRY; HYDROCARBONS; MASS; MICHIGAN; MICHIGAN COPPER DISTRICT; NONESUCH SHALE; ONTONAGON-COUNTY; ORGANIC-MATERIALS; ORONTO-GROUP; PETROLEUM; PHYTANE; PRISTANE; SEDIMENTARY-ROCKS; SEDIMENTS; SPECTROSCOPY; UNITED-STATES; UPPER-PENINSULA; WHITE PINE MINE;

Eglinton, G., Scott, P. M., Belsky, T., Burlingame, A. L., Richter, W., and Calvin, M., 1966, Occurrence of isoprenoid alkanes in a Precambrian sediment, in Advances in organic geochemistry: Oxford, England, Pergamon Press, v. 24, p. 41-74. CHEMICAL-ANALYSIS; CHROMATOGRAPHY; COPPER; FARNESANE; GEOCHEMISTRY; HYDROCARBONS; ISOPRENOID HYDROCARBONS; MARKER BED; MICHIGAN; MICHIGAN COPPER DISTRICT; NONESUCH SHALE; OIL; ONTONAGON-COUNTY; ORGANIC GEOCHEMISTRY; ORGANIC-MATERIALS; ORONTO-GROUP; PHYTANE; PRISTANE; SEDIMENTARY-ROCKS; SEDIMENTS; SHALE; UNITED-STATES; UPPER-PENINSULA; WHITE PINE MINE;

Ehrlich, R., and Vogel, T. A., 1972, Depositional model for the Lower Nonesuch Shale based on lithologic variation [abs.]: 18th Annual Institute on Lake Superior Geology, Houghton, MI, v. 18, Paper 7, 3 p. BROWN MASSIVE BED; CLASTICS; COPPER; DEPOSITION; DOMINO BED; GENESIS; LITHOLOGY; MICHIGAN; MICHIGAN COPPER DISTRICT; MINERALIZATION; MODEL; MODELLING; NONESUCH SHALE; ONTONAGON-COUNTY; ORONTO-GROUP; SEDIMENTARY STRUCTURES; SEDIMENTARY-PETROLOGY; SEDIMENTARY-ROCKS; SEDIMENTS; SHALE; STRATABOUND; TERRIGENOUS; UNITED-STATES; WHITE PINE MINE;

Eisenreich, S. J., Hoffman, M. R., Iwasaki, I., and Bydalek, T. J., 1976, Metal sulfide leaching potential in the Duluth Gabbro Complex - A literature survey: Minneapolis, MN, Minnesota Environmental Quality Board, Report to Minnesota State Planning Agency and Cu-Ni Regional Study, 131 p. BACTERIA; BIBLIOGRAPHY; COPPER; DULUTH COMPLEX; ENVIRONMENTAL; EXPERIMENTAL STUDIES; GEOCHEMISTRY; KINETICS; LAYERED INTRUSION; LEACHING; MINNESOTA; NICKEL; OXIDATION; REGIONAL COPPER-NICKEL STUDY; SULFIDES; THERMODYNAMICS; UNITED-STATES;

Eisenreich, S. J., Hoffman, M. R., and Lapakko, K., 1977, Mechanism and control of metal sulfide in gabbro mining-related solids: Minneapolis, MN, Minnesota Environmental Quality Board, Progress Report to Copper-Nickel Task Force, 73 p. BIRCH LAKE; COPPER; DULUTH COMPLEX; DUNKA BAY; DUNKA PIT; ENVIRONMENTAL; EXPERIMENTAL STUDIES; GEOCHEMISTRY; LAYERED INTRUSION; LEACHATES; LEACHING; LEACHING SOLUTIONS; MINNESOTA; NICKEL; REGIONAL COPPER-NICKEL STUDY; SOUTH KAWISHIWI INTRUSION; ST. LOUIS COUNTY; UNITED-STATES; UNNAMED CREEK; WASTE ROCK; WATER CHEMISTRY;

Elftman, A. H., 1895, Notes upon the bedded and banded structures of the gabbro and upon an area of troctolyte, in: Geological and Natural History Survey of Minnesota, Annual Report, v. 23, p. 224-230. DULUTH COMPLEX; GABBRO; LAYERED INTRUSION; MINNESOTA; TROCTOLITE; UNITED-STATES;

---, 1898, The geology of the Keweenawan area in northeastern Minnesota. II: American Geologist, v., p. 175-188. DULUTH COMPLEX; GEOLOGY; LAYERED INTRUSION; MINNESOTA; UNITED-STATES; VOLCANIC;

---, 1898, The geology of the Keweenawan area in northeastern Minnesota. III: American Geologist, v. 22, p. 130-149. CONTACT METAMORPHISM; DULUTH COMPLEX; GEOLOGY; LAYERED INTRUSION; METAMORPHISM; MINNESOTA; UNITED-STATES; VOLCANIC;

49 Elmore, R. D., 1980, The Copper Harbor Conglomerate and Nonesuch Shale, an alluvial fan-lacustrine basin-fill sequence [abs.]: Geological Society of America Abstracts with Programs, v. 12, no. 7, p. 421. ALLUVIAL-FANS; CLASTIC-ROCKS; COPPER HARBOR CONGLOMERATE; ENVIRONMENT; LACUSTRINE-ENVIRONMENT; MICHIGAN; NONESUCH SHALE; ORONTO-GROUP; SEDIMENTARY-PETROLOGY; SEDIMENTARY-ROCKS; SEDIMENTATION; SEDIMENTS; SHALE; UNITED-STATES; UPPER-PENINSULA; VOLCANIC ROCKS;

---, 1981, The Copper Harbor Conglomerate and Nonesuch Shale; sedimentation in a Precambrian intracontinental rift, upper Michigan [Ph.D. Dissertation]: University of Michigan, Ann Arbor, 192 p. ARID-ENVIRONMENT; CHEMICAL REMANENT MAGNETIZATION; COPPER HARBOR CONGLOMERATE; ENVIRONMENT; GEOPHYSICS; MICHIGAN; NONESUCH SHALE; ORONTO-GROUP; PALEOCLIMATOLOGY; PALEOGEOGRAPHY; PALEOMAGNETISM; REMANENT-MAGNETIZATION; SEDIMENTARY-ROCKS; SEDIMENTATION; SEDIMENTS; STRATIGRAPHY; TERRESTRIAL-ENVIRONMENT; UNITED-STATES; UPPER-PENINSULA;

---, 1983, Precambrian non-marine in alluvial fan deposits, the Copper Harbor Conglomerate, upper Michigan: Sedimentology, v. 30, no. 6, p. 829-842. ALGAE; BIOGENIC-STRUCTURES; CLASTIC-ROCKS; CONGLOMERATE; COPPER HARBOR CONGLOMERATE; FLUVIAL-SEDIMENTATION; LITHOFACIES; MICHIGAN; ORONTO-GROUP; PROCESSES; SANDSTONE; SEDIMENTARY STRUCTURES; SEDIMENTARY-PETROLOGY; SEDIMENTARY-ROCKS; SEDIMENTATION; SEDIMENTS; STROMATOLITES; UNITED-STATES;

---, 1983, The Copper Harbor Conglomerate: A late Precambrian fining-upward alluvial fan sequence in northern Michigan: Geological Society of America Bulletin, v. 95, p. 610-617. ALLUVIAL-FANS; COPPER HARBOR CONGLOMERATE; MICHIGAN; ORONTO-GROUP; SEDIMENTATION; UNITED-STATES; UPPER-PENINSULA;

---, 1984, The Copper Harbor Conglomerate: A late Precambrian fining-upward alluvial fan sequence in northern Michigan: Geological Society of America Bulletin, v. 95, no. 5, p. 610-617. ALLUVIAL-FANS; CLASTIC-ROCKS; CONGLOMERATE; COPPER HARBOR CONGLOMERATE; ENVIRONMENT; FAILED ARM; FLUVIAL-ENVIRONMENT; KEWEENAW COUNTY; MICHIGAN; ORONTO-GROUP; PALEOCLIMATOLOGY; PALEOGEOGRAPHY; SEDIMENTARY-ROCKS; SEDIMENTATION; SEDIMENTS; STRATIGRAPHY; UNITED- STATES;

Elmore, R. D., and Daniels, P. A., 1980, Nonmarine stromatolites in alluvial fan deposits, the Copper Harbor Conglomerate, upper Michigan [abs.]: Geological Society of America Abstracts with Programs, v. 12, no. 5, p. 225. ALGAE; ALLUVIAL-FANS; BIOGENIC-STRUCTURES; COPPER HARBOR CONGLOMERATE; MICHIGAN; ORONTO-GROUP; PALEOECOLOGY; RIVERS; SEDIMENTARY STRUCTURES; SEDIMENTARY-PETROLOGY; SEDIMENTARY-ROCKS; SEDIMENTS; STROMATOLITES; TERRESTRIAL; ULTRASTRUCTURE; UNITED-STATES; UPPER-PENINSULA;

Elmore, R. D., and Daniels, P. A., Jr., 1980, Depositional system model for upper Keweenawan Oronto Group sediments, Northern Peninsula, Michigan [abs.]: Eos (American Geophysical Union Transactions), v. 61, no. 48, p. 1195. CLASTIC-ROCKS; COPPER HARBOR CONGLOMERATE; DEPOSITION; FREDA-SANDSTONE; MICHIGAN; MODELS; NONESUCH SHALE; ORONTO-GROUP; SANDSTONE; SEDIMENTARY-ROCKS; SEDIMENTATION; SEDIMENTS; STRUCTURAL-GEOLOGY; TECTONICS; UNITED-STATES; UPPER- PENINSULA;

Elmore, R. D., Milavec, G., Imbus, S., and Engel, M., 1988, The Precambrian Nonesuch Formation of the North American Mid-Continent Rift: Sedimentology and organic geochemical aspects of lacustrine deposition: Precambrian Research, v. 43, p. 191-213. DEPOSITION; GEOCHEMISTRY; LACUSTRINE; MICHIGAN; MICHIGAN COPPER DISTRICT; NONESUCH SHALE; ONTONAGON-COUNTY; ORGANIC GEOCHEMISTRY; SEDIMENTARY-ROCKS; SEDIMENTOLOGY; UNITED-STATES; WHITE PINE MINE;

Elmore, R. D., Milavec, G. J., Imbus, S. W., and Engel, M. H., 1989, The Precambrian Nonesuch Formation of the North American mid-continent rift; sedimentology and organic geochemical aspects of lacustrine deposition: Precambrian Research, v. 43, no. 3, p. 191-213. CLASTIC-ROCKS; ENVIRONMENT; GENESIS; LACUSTRINE-ENVIRONMENT; MICHIGAN; NONESUCH SHALE; ORGANIC-CARBON; ORGANIC- MATERIALS; ORONTO-GROUP; PETROGRAPHY; SEDIMENTARY-PETROLOGY; SEDIMENTARY-ROCKS; SEDIMENTATION; SEDIMENTS; STRATIGRAPHY; UNITED-STATES;

Elmore, R. D., and Van der Voo, R., 1981, Detrital and chemical magnetizations in of the Copper Harbor Conglomerate (Keweenawan), Upper Michigan [abs.]: Eos (American Geophysical Union Transactions), v. 62, p. 273. CHEMICAL-REMANENCE; CLASTIC-ROCKS; COPPER HARBOR CONGLOMERATE; DETRITAL REMANENT MAGNETIZATION; GEOPHYSICS; HEMATITE; MAGNETITE; MICHIGAN; ORONTO-GROUP; OXIDES; PALEOMAGNETISM; SANDSTONE; SEDIMENTARY-ROCKS; SEDIMENTS; STRATIGRAPHY; UNITED- STATES; UPPER-PENINSULA;

---, 1981, Origin of hematite in a red bed deposit; petrography and paleomagnetism of the Copper Harbor Conglomerate (Keweenawan), Upper Michigan [abs.]: Geological Society of America Abstracts with Programs, v. 13, no. 7, p. 446. CLASTIC-ROCKS; COPPER HARBOR CONGLOMERATE; DIAGENESIS; GEOPHYSICS; HEMATITE; MATERIALS; MICHIGAN; MINERALS; ORONTO-GROUP; OXIDES; PALEOMAGNETISM; PETROLOGY; RED-BEDS; SEDIMENTARY-PETROLOGY; SEDIMENTARY-ROCKS; SEDIMENTS; UNITED- STATES; UPPER-MICHIGAN;

---, 1982, Origin of hematite and its associated remanence in the Copper Harbor Conglomerate (Keweenawan), upper Michigan: Journal of Geophysical Research, v. 87, p. 10918-10928. COPPER HARBOR CONGLOMERATE; HEMATITE; MAGNETIZATION; MICHIGAN; ORIGIN; ORONTO-GROUP; REMANENCE; UNITED-STATES; UPPER-PENINSULA;

Engel, M. H., and Imbus, S. W., 1988, Chemical and stable isotopic composition of organic matter associated with late Proterozoic North American shales [abs.]: Third Chemical Congress of North America, Book of Abstracts, Toronto, Ontario, p. 3. APACHE-GROUP; BELT-SUPERGROUP; CLASTIC-ROCKS; ECONOMIC GEOLOGY; ISOTOPES; ORGANIC-MATERIALS; PETROLEUM; SEDIMENTARY-ROCKS; SEDIMENTS; SHALE; STABLE-ISOTOPES; UINTA MOUNTAIN GROUP; UPPER-UPPER-PROTEROZOIC;

50 Ensign, C. O., Jr., 1964, Ore dilution control increases earnings at White Pine: Transactions of the American Institute of Mining and Metallurgical Engineers, v. 229, p. 184-191. COPPER; ECONOMICS; MICHIGAN; MICHIGAN COPPER DISTRICT; MINING; MINING-METHODS; NONESUCH SHALE; ONTONAGON-COUNTY; ORONTO-GROUP; UNITED-STATES; UPPER-PENINSULA; WHITE PINE MINE;

Ensign, C. O., Jr., and Patrick, J. L., 1968, Ore reserve computation and ore dilution control at the White Pine Mine, White Pine, Michigan, in Ore reserve estimation and grade control-Canadian centennial conference:, Canadian Institute of Mining and Metallurgy, Special Volume 9, p. 308-318. CHALCOCITE; COPPER; DILUTION; ECONOMIC GEOLOGY; GRADE-CONTROL; MICHIGAN; MICHIGAN COPPER DISTRICT; MINE; MINING; MINING-METHODS; NONESUCH SHALE; ONTONAGON-COUNTY; ORE RESERVES; ORONTO-GROUP; RESERVE- ESTIMATION; ROOM-AND-PILLAR; SEDIMENTARY-ROCKS; SEDIMENTS; UNITED-STATES; UPPER-PENINSULA; WHITE PINE MINE;

Ensign, C. O., Jr., White, W. S., Wright, J. C., Patrick, J. L., Leone, R. J., Hathaway, D. J., Trammell, J. W., Fritts, J. J., and Wright, T. L., 1968, Copper deposits in the Nonesuch Shale, White Pine, Michigan, in Ridge, J. D., ed., Ore deposits of the United States, 1933-1967 (Graton-Sales Volume): New York, American Institute of Mining, Metallurgical, and Petroleum Engineers, v. 1, p. 460-488. BASTNAESITE; BORNITE; CHALCOCITE; CHALCOPYRITE; COPPER; COVELLITE; DIAGENESIS; ECONOMIC GEOLOGY; GALENA; GENESIS; GREENOCKITE; IGNEOUS INTRUSIONS; LOWER SANDSTONE; MARKER BED; MICHIGAN; MICHIGAN COPPER DISTRICT; MINERAL DEPOSITS; MINERALIZATION; MINING; NATIVE COPPER; NATIVE-SILVER; NONESUCH SHALE; OCCURRENCE; ONTONAGON-COUNTY; ORIGIN; ORONTO-GROUP; PARAGENESIS; PARTING-SHALE; PETROGRAPHY; PYRITE; RARE-EARTH CARBONATES; SANDSTONE; SEDIMENTARY-ROCKS; SEDIMENTS; SHALE; SPHALERITE; STRATIFORM; STRATIGRAPHY; STRIPED BED; STRUCTURAL- GEOLOGY; SYNCHISITE; UNITED-STATES; UPPER SANDSTONE; UPPER SHALE; UPPER-PENINSULA; WHITE PINE MINE;

Ensign, P. S., 1981, An input electromagnetic investigation of the southern margin of the Jacobsville Sandstone, Upper Peninsula of Michigan [M.S. Thesis]: Michigan Technological University, Houghton, 68 p. ECONOMIC GEOLOGY; ELECTROMAGNETIC-SURVEYS; GEOPHYSICAL- SURVEYS; GEOPHYSICS; JACOBSVILLE-SANDSTONE; MAGNETIC-SURVEYS; METAL-ORES; MICHIGAN; MINERAL-RESOURCES; SANDSTONE; SEDIMENTARY-ROCKS; SEDIMENTS; SURVEYS; UNITED-STATES; UPPER-PENINSULA; URANIUM-ORES;

---, 1982, Electromagnetic geophysics of Jacobsville basin, northern Michigan, in Geological Survey Research 1982:, U. S. Geological Survey, Professional Paper, p. 36-37. AIRBORNE-METHODS; ARCHEAN; ECONOMIC GEOLOGY; GEOPHYSICAL-SURVEYS; GEOPHYSICS; ; JACOBSVILLE-BASIN; JACOBSVILLE-SANDSTONE; LAKE-GOGEBIC; MAGNETIC-SURVEYS; MICHIGAMME FORMATION; MICHIGAN; SANDSTONE; SEDIMENTARY-ROCKS; SEDIMENTS; UNITED-STATES; UPPER-PENINSULA; URANIUM- ORES;

Epili, D., and Mereu, R. F., 1989, The crustal structure beneath and Georgian Bay as revealed from the GLIMPCE refraction and wide angle reflection data [abs.]: Eos (American Geophysical Union Transactions), v. 70, no. 15, p. 271. BRITT DOMAIN; CANADA; CRUST; CRUSTAL STRUCTURE; GEOPHYSICS; GEORGIAN BAY; GLIMPCE; GRENVILLE FRONT TECTONIC ZONE; GRENVILLE-FRONT; LAKE SUPERIOR; LAKE-HURON; MANITOULIN TERRANE; MOHO; ONTARIO; REFLECTION; REFRACTION; SEISMIC; SEISMIC LINE J; SEISMIC-SURVEYS; STRUCTURAL-GEOLOGY; UNITED-STATES; VELOCITY;

---, 1989, The GLIMPCE seismic experiment: Onshore refraction and wide-angle reflection observations from a fan line over the Lake Superior Midcontinent Rift System, in Mereu, R. F., Mueller, S., and Fountain, D. M., eds., Properties and processes of Earth's lower crust:, American Geophysical Union, Geophysical Monograph 51, p. 93-101. GEOPHYSICS; GLIMPCE; LAKE SUPERIOR; REFLECTION; REFRACTION; SEISMIC; SEISMIC-SURVEYS;

Ernst, W. G., 1955, The petrology of the Endion Sill, Duluth, Minnesota [M.S. Thesis]: University of Minneasota, Minneapolis, 31 p. DULUTH COMPLEX; ENDION SILL; LAYERED INTRUSION; MINNESOTA; PETROLOGY; SILLS; UNITED-STATES;

---, 1960, Diabase-granophyre relations in the Endion sill, Duluth, Minnesota: Journal of Petrology, v. 1, p. 286-303. DIABASE; DULUTH; DULUTH COMPLEX; ENDION SILL; FELSIC SERIES; GRANOPHYRE; LAYERED INTRUSION; MINNESOTA; SILLS; UNITED-STATES;

Ervin, C. P., 1977, Analysis of Clam Lake gravity and magnetic anomalies:, Wisconsin State Geological and Natural History Survey, Report, 8 p. CLAM LAKE; CLAM LAKE INTRUSION; GEOPHYSICS; GRAVITY; GRAVITY-SURVEYS; MAGNETICS; UNITED-STATES; WISCONSIN;

Ervin, C. P., and Hammer, S. H., 1974, Bouguer anomaly gravity map of Wisconsin: Wisconsin Geological and Natural History Survey, scale 1:500,000. ARCHEAN; BOUGUER-ANOMALIES; GEOPHYSICS; GRAVITY; LOWER-PROTEROZOIC; MAP; PENOKEAN; PENOKEAN OROGEN; UNITED-STATES; WISCONSIN;

Ervin, C. P., Olmstead, J. F., and Mudrey, M. G., Jr., 1988, Geophysical and petrological characteristics of the Clam Lake Intrusion--A constraint on the time of Keweenawan basin development [abs.]: 34th Annual Institute on Lake Superior Geology, Marquette, MI, v. 34, p. 24-25. AEROMAGNETICS; BOUGUER-ANOMALIES; CLAM LAKE INTRUSION; CUMULATES; DENSITY; DRILL CORE; DRILL HOLE; GEOCHEMISTRY; GEOPHYSICS; ILMENITE; MAGNETIC SUSCEPTIBILITY; MAGNETITE; MELLEN COMPLEX; MINERAL CHEMISTRY; OXIDES; PALEOMAGNETISM; UNITED-STATES; WISCONSIN;

Eschman, D. F., 1977, The source of chloride contamination of ground water near Sault Ste. Marie, Michigan [abs.]: Geological Society of America Abstracts with Programs, v. 9, no. 5, p. 591-592. CAMBRIAN; CHIPPEWA-COUNTY; CHLORIDE; CHLORINE; CONTAMINATION; GROUNDWATER; HYDROGEOLOGY; JACOBSVILLE-SANDSTONE; MICHIGAN; PALEOZOIC; PHANEROZOIC; POLLUTION; PUMPING; SALINITY; SALT WATER INTRUSION; SANDSTONE; SAULT STE. MARIE; SEDIMENTARY-ROCKS; SEDIMENTS; UNITED-STATES; UPPER-PENINSULA;

Evans, N. J., 1984, Rare earth geochemistry of lamprophyre dykes from the Coldwell Alkaline Complex, northwestern Ontario [H.B.Sc. Thesis]: Lakehead University, Thunder Bay, Ontario, Canada, 50 p. ALKALIC COMPLEX; ALKALINE; ALKALINE INTRUSION; CANADA;

51 COLDWELL COMPLEX; DIKES; DISTRICT OF THUNDER BAY; GEOCHEMISTRY; LAMPROPHYRE; ONTARIO; PORT COLDWELL; RARE-EARTH ELEMENTS; REE;

Fackler, W. C., 1941, Clastic crevice fillings in the Keweenawan lavas: Journal of Geology, v. 49, p. 550-556. CLASTIC; CLASTIC DIKE; CREVICE; INTERFLOW SEDIMENTS; LAKE COUNTY; MINNESOTA; ORIGIN; PETROGRAPHY; SEDIMENTARY-ROCKS; SEDIMENTOLOGY; UNITED-STATES; VOLCANIC ROCKS;

Fahrig, W. F., 1987, The tectonic settings of continental mafic dyke swarms: Failed arm and early passive margin, in Halls, H. C., and Fahrig, W. F., eds., Mafic dyke swarms:, Geological Association of Canada, Special Paper 34, p. 331-348. ARCHEAN; BARAGA DIKES; BEAR PROVINCE; CANADA; CANADIAN SHIELD; DIKE; DISTRICT OF THUNDER BAY; FAILED ARM; LAYERED INTRUSION; LOWER-PROTEROZOIC; MACKENZIE DIKES; MAFIC; MAGMATIC; MATACHEWAN DIKES; MUSKOX INTRUSION; NORTHWEST TERRITORIES; OCEAN- FLOOR SPREADING; ONTARIO; PASSIVE MARGIN; PLATE TECTONICS; RIFTING; SLAVE PROVINCE; SUDBURY DIKES; THUNDER BAY DIKES; UNITED-STATES;

Fahrig, W. F., and Wanless, R. K., 1963, Age and significance of diabase dyke swarms of the Canadian Shield: Nature, v. 200, p. 934-937. AGE DATING; BEAR PROVINCE; BIOTITE; CANADA; CANADIAN SHIELD; CHURCHILL PROVINCE; DIABASE; DIKE; DIKE-SWARMS; FLOOD BASALTS; GEOCHRONOLOGY; GRENVILLE PROVINCE; LOWER-PROTEROZOIC; MACKENZIE DYKE SWARM; MINERAL AGES; ONTARIO; POTASSIUM-ARGON; QUEBEC; SLAVE PROVINCE; SOUTHERN PROVINCE; SUPERIOR PROVINCE; UPPER- PROTEROZOIC;

Fahrig, W. F., and West, T. D., 1987, Diabase dyke swarms of the Canadian Shield: Geological Survey of Canada, Map 1627A, scale 1:4,873,900. ABITIBI DIKES; AILLIK DIKES; ARCHEAN; BARAGA DIKES; BEAR PROVINCE; CANADA; CHURCHILL PROVINCE; DIKES; DISTRICT OF THUNDER BAY; GRAND PORTAGE DIKES; GRENVILLE PROVINCE; LOWER-PROTEROZOIC; MICHIGAN; MINNESOTA; ONTARIO; PENOKEAN; SLAVE PROVINCE; SUDBURY DIKES; SUPERIOR PROVINCE; THUNDER BAY DIKES; UNITED-STATES; UPPER- PROTEROZOIC; WISCONSIN;

Fairbairn, H. W., Ahrens, L. H., and Gorfinkle, L. G., 1953, Minor element content of Ontario diabase: Geochimica et Cosmochimica Acta, v. 3, p. 34-36. BASE METAL ANALYSES; CANADA; DIABASE; DIKE; DULUTH COMPLEX; GEOCHEMISTRY; LAYERED INTRUSION; MATACHEWAN DIKES; MINNESOTA; MINOR ELEMENT ANALYSES; NIPIGON SILLS; NIPISSING DIABASE; ONTARIO; TRACE ELEMENT ANALYSES; UNITED-STATES;

Fairbairn, H. W., Bullwinkel, J. H., Pinson, W. H., and Hurley, P. M., 1959, Age investigations of syenites from Coldwell, Ontario: Proceedings of the Geological Association of Canada, v. 11, p. 141-144. AGE DATING; ALKALIC COMPLEX; ALKALINE; ALKALINE INTRUSION; BIOTITE; CANADA; COLDWELL COMPLEX; DISTRICT OF THUNDER BAY; GEOCHRONOLOGY; K-FELDSPAR; MINERAL AGES; ONTARIO; PORT COLDWELL; POTASSIUM FELDSPAR; POTASSIUM-ARGON; RUBIDIUM-STRONTIUM; SYENITE;

Farnham, P. R., 1967, Crustal structure in the Keweenawan province of east-central Minnesota and western Wisconsin [Ph.D. Dissertation]: University of Minnesota, Minneapolis, 464 p. CRUST; CRUSTAL STRUCTURE; GEOPHYSICS; MINNESOTA; STRUCTURAL-GEOLOGY; UNITED- STATES; WISCONSIN;

Faure, G., 1964, The age of the Duluth gabbro complex and the Endion sill by the whole rock Rb-Sr method, in Variations in isotopic abundances of strontium, calcium, and argon and related topics: Cambridge, MA, Massachusetts Institute of Technology, Department of Geology and Geophysics, 12th Annual Progress Report, p. 256-257. U.S. Atomic Energy Commission contract At(30-1)-1381 AGE DATING; DULUTH COMPLEX; ENDION SILL; GEOCHRONOLOGY; LAYERED INTRUSION; MINNESOTA; RUBIDIUM-STRONTIUM; SILLS; ST. LOUIS COUNTY; STRONTIUM ISOTOPES; UNITED-STATES;

Faure, G., and Chaudhuri, S., 1966, Whole-rock Rb-Sr age of the cupriferous Parting Shale Member of the Nonesuch Formation, Michigan [abs.], in: Geological Society of America, Special Paper 87, p. 55-56. AGE DATING; COPPER; FELSITE; GEOCHRONOLOGY; MICHIGAN; MICHIGAN COPPER DISTRICT; NONESUCH SHALE; ORONTO-GROUP; PARTING SHALE MEMBER; RUBIDIUM-STRONTIUM; SEDIMENTARY-ROCKS; SEDIMENTS; SHALE; STRONTIUM ISOTOPES; UNITED-STATES; UPPER-PENINSULA;

---, 1967, The geochronology of the Keweenawan rocks of Michigan and the origin of copper deposits:, Ohio State University, Department of Geology, Laboratory Isotope, Geology and Geochemistry Department No. 1, AGE DATING; COPPER; GEOCHRONOLOGY; MICHIGAN; MINERALIZATION; ORE-DEPOSITS; ORIGIN; UNITED-STATES; UPPER-PENINSULA;

Faure, G., Chaudhuri, S., and Fenton, M., 1969, Ages of the Duluth gabbro complex and of the Endion sill, Duluth, Minnesota: Journal of Geophysical Research, v. 74, p. 720-725. AGE DATING; DULUTH; DULUTH COMPLEX; ENDION SILL; GEOCHRONOLOGY; LAYERED INTRUSION; MINNESOTA; SILLS; ST. LOUIS COUNTY; UNITED-STATES;

Faure, G., and Hurley, P. M., 1964, The age of the Duluth gabbro and the Endion sill by the whole-rock Rb-Sr method [abs.]: 10th Annual Institute on Lake Superior Geology, Ishpeming, MI, v. 10, p. 60-62. AGE DATING; ANORTHOSITIC SERIES; DULUTH; DULUTH COMPLEX; ENDION SILL; ENGER TOWER; GEOCHRONOLOGY; LAYERED INTRUSION; MINNESOTA; RUBIDIUM-STRONTIUM; SILLS; ST. LOUIS COUNTY; STRONTIUM ISOTOPES; UNITED-STATES;

Feeney, J., 1990, Paleomagnetism of Keweenawan age basalts of the Chengwatana Volcanic Group in Polk County, Wisconsin [M.S. Thesis]: University of Wisconsin, Milwaukee, 218 p. BASALTS; CHENGWATANA VOLCANIC GROUP; GEOPHYSICS; PALEOMAGNETISM; POLK- COUNTY; UNITED-STATES; VOLCANIC ROCKS; WISCONSIN;

52 Feeney, J., and Kean, W. F., 1988, Paleomagnetism of Keweenawan age basalts from the Taylor Falls-St. Croix Falls area of Wisconsin and Minnesota [abs.]: 34th Annual Institute on Lake Superior Geology, Marquette, MI, v. 34, p. 28. BASALTS; GEOPHYSICS; MINNESOTA; PALEOMAGNETISM; PALEOPOLE; REVERSE POLARITY; ST. CROIX FALLS; TAYLOR'S FALLS; UNITED-STATES; WISCONSIN;

Feenstra, J., The mineralogy, petrology, and economic significance of oxide zones in the Duluth Complex, northeastern Minnesota [M.S. Thesis]: University of Minnesota, Duluth, not completed. DULUTH COMPLEX; LAYERED INTRUSION; MINERALOGY; MINNESOTA; OXIDE; PETROLOGY; UNITED-STATES;

Fellows, S. N., 1976, Description and interpretation of the petrology of a portion of a drill core from the Duluth Complex near Babbitt, Minnesota [M.S. Thesis]: Cornell University, Ithaca, New York, 149 p. DRILL HOLE; B1-128; BABBITT; COPPER; DULUTH COMPLEX; LAYERED INTRUSION; MINERAL DEPOSIT; MINERALIZATION; MINNAMAX; MINNESOTA; NICKEL; ORE DEPOSIT; PARTRIDGE RIVER INTRUSION; PETROLOGY; ST. LOUIS COUNTY; SULFIDE; SULFIDES; UNITED-STATES;

Felmlee, J. K., 1970, Geologic structure along the Huronian-Keweenawan contact near Mellen, Wisconsin [M.A. Thesis]: University of Wisconsin, Madison, 91 p. HURONIAN; LOWER-PROTEROZOIC; STRUCTURAL-GEOLOGY; UNITED-STATES; WISCONSIN;

Fenwick, K., and Scott, J., 1978, Report of North Central Regional Geologist, in Annual Report of the Regional and Resident Geologists:, Ontario Geological Survey, Miscellaneous Paper 78, p. 43-44. ALKALIC COMPLEX; ALKALINE; ALKALINE INTRUSION; CANADA; CARBONATITE; ONTARIO; PROTEROZOIC;

Ferderer, R. J., 1982, Gravity and magnetic modelling of the southern half of the Duluth Complex, northeastern Minnesota [M.A. Thesis]: Indiana University, Bloomington, 99 p. DULUTH COMPLEX; GEOPHYSICS; GRAVITY; LAYERED INTRUSION; MAGNETIC; MINNESOTA; UNITED-STATES;

Ferderer, R. J., Chandler, V. W., and Mead, J., 1983, Gravity and magnetic model studies of the southern Duluth Complex, northeastern Minnesota [abs.]: 29th Annual Institute on Lake Superior Geology, Houghton, MI, v. 29, p. 15-16. AEROMAGNETICS; DULUTH COMPLEX; GEOPHYSICS; GRAVITY; LAYERED INTRUSION; MAGMATIC; MAGNETICS; MINNESOTA; MODELLING; ST. LOUIS COUNTY; UNITED-STATES;

Fiebor, B., 1994, Petrochemistry and platinum-group element concentrations of drill core BA-4 through the Partridge River Intrusion, Duluth Complex, Minnesota [M.S. Thesis]: Auburn University, Auburn, , 202 p. DRILL HOLE; BA-4; BASE METAL ANALYSES; BIOTITE; CHALCOPYRITE; CLINOPYROXENE; COPPER; CPX; CRYSTALLIZATION; CUMULATES; DISSEMINATED ORE; DULUTH COMPLEX; EQUILIBRIA; GEOCHEMISTRY; GRAIN SIZE; ILMENITE; MAGNETITE; MAJOR ELEMENT ANALYSES; MINERAL CHEMISTRY; MINNESOTA; MINOR ELEMENT ANALYSES; MODAL ANALYSES; MODEL; MODELLING; NICKEL; OLIVINE; OPX; ORTHOPYROXENE; PARTRIDGE RIVER INTRUSION; PARTRIDGE RIVER TROCTOLITE SERIES; PENTLANDITE; PETROCHEMISTRY; PETROGRAPHY; PGE; PLAGIOCLASE; PLATINUM-GROUP ELEMENTS; PYRITE; PYRRHOTITE; SPECIFIC GRAVITY; ST. LOUIS COUNTY; STRATIGRAPHY; SULFIDES; TRACE ELEMENT ANALYSES; UNITED-STATES; WHOLE ROCK ANALYSES;

Field, K. K., 1976, A study of copper-nickel mineralization in the Duluth Complex, northeastern Minnesota [B.S. Thesis]: Cornell University, Ithaca, New York BORNITE; CHALCOPYRITE; CHROMIUM HERCYNITE; CHROMIUM SPINEL; COPPER; COVELLITE; CUBANITE; DIGENITE; DRILL HOLE; DULUTH COMPLEX; HEMATITE; HERCYNITE; ILMENITE; K-1; LAYERED INTRUSION; MACKINAWITE; MAGNETITE; MINERALIZATION; MINERALOGY; MINNESOTA; NICKEL; PENTLANDITE; PYRRHOTITE; SOUTH FILSON CREEK; SOUTH KAWISHIWI INTRUSION; SPHALERITE; SPINEL; SULFIDE; SULFIDES; TROILITE; UNITED-STATES; VALLERITE; VIOLARITE;

Fisher, J. H., 1983, Tectonic evolution of the Michigan Basin [abs.]: Geological Society of America Abstracts with Programs, v. 15, no. 6, p. 573. CANADIAN SHIELD; CLASTIC-ROCKS; FAULTS; FREDA-SANDSTONE; GEOPHYSICS; GRAVITY; GRAVITY-ANOMALIES; MICHIGAN; MICHIGAN-BASIN; OGEMAW-COUNTY; ORONTO-GROUP; RIFTING; SANDSTONE; SEDIMENTARY-ROCKS; SEDIMENTS; SHALE; SHEAR ZONES; SILTSTONE; STRUCTURAL-GEOLOGY; TECTONICS; UNITED-STATES;

Fitz, T. J., and Green, J. C., 1986, Large rheoignimbrites in the Keweenawan North Shore Volcanic Group in Cook County, Minnesota [abs]: Geological Society of America Abstracts with Programs, v. 18, p. 288. COOK COUNTY; FELSIC; MINNESOTA; NORTH SHORE VOLCANIC GROUP; RHEOIGNIMBRITE; UNITED-STATES; VOLCANIC ROCKS;

Fitz, T. J., III, 1989, Large felsic flows in the Keweenawan North Shore Volcanic Group in Cook County, MN [M.S. Thesis]: University of Minnesota, Duluth COOK COUNTY; FELSIC; MINNESOTA; NORTH SHORE VOLCANIC GROUP; PETROLOGY; RHEOIGNIMBRITE; UNITED- STATES; VOLCANIC ROCKS;

53 Flacker, W. C., 1941, Clastic crevice fillings in the Keweenawan lavas: Journal of Geology, v. 49, p. 550-556. CLASTICS; VOLCANIC ROCKS;

Flood, T., 1982, Geology of the Cypress, Hanson and South Arm of Knife Lake area, B.W.C.A., northeast Minnesota [abs.]: 28th Annual Institute on Lake Superior Geology, International Falls, MN, v. 28, p. 9-10. ARCHEAN; BOUNDARY WATERS CANOE AREA; BWCA; DIABASE; DIKES; GEOLOGY; GREENSTONE BELTS; KNIFE LAKE; KNIFE LAKE SYNCLINORIUM; METASEDIMENTARY-ROCKS; MINNESOTA; SEDIMENTARY-ROCKS; SPOON LAKE; STRUCTURAL-GEOLOGY; TURBIDITE; UNITED-STATES; VERMILION DISTRICT; METAMORPHISM; CONTACT METAMORPHISM

Foose, M. P., 1982, Structural, stratigraphic, and geochemical features of the South Kawishiwi intrusion, Duluth Complex, Minnesota [abs.]: Geological Society of America Abstracts with Programs, v. 14, p. 490. DULUTH COMPLEX; GEOCHEMISTRY; LAKE COUNTY; LAYERED INTRUSION; MINNESOTA; SOUTH KAWISHIWI; SOUTH KAWISHIWI INTRUSION; STRATIGRAPHY; STRUCTURAL-GEOLOGY; UNITED-STATES;

---, 1982, The stratigraphic and structural setting of the South Kawishiwi intrusion, Duluth Complex, Minnesota, U.S.A. [abs.], in Sulfide deposits in mafic and ultramafic rocks:, p. 17-18. DULUTH COMPLEX; LAKE COUNTY; LAYERED INTRUSION; MAFIC; MINNESOTA; SOUTH KAWISHIWI; SOUTH KAWISHIWI INTRUSION; STRATIGRAPHY; STRUCTURAL-GEOLOGY; SULFIDES; ULTRAMAFIC; UNITED- STATES;

---, 1984, Logs and correlation of drill holes within the South Kawishiwi intrusion, Duluth Complex, northeastern Minnesota:, U. S. Geological Survey, Open-file Report 84-14, 230 p. DRILLS HOLES; DU-6; DU-8; DU-10; DU-12; DU-14; DU-15; DU-16; DU-17; DULUTH COMPLEX; GEOLOGY; LAYERED INTRUSION; MINNESOTA; SOUTH KAWISHIWI; UNITED-STATES;

---, 1984, Genesis of sulfide ores in the Duluth Complex, in Geological Survey Research, Fiscal Year 1981:, U. S. Geological Survey, Professional Paper 1375, p. 5. DULUTH COMPLEX; GENESIS; LAYERED INTRUSION; MINERALIZATION; MINNESOTA; ORE GENESIS; SULFIDE; SULFIDES; UNITED-STATES;

---, 1984, The physical and chemical setting of copper-nickel sulfides in part of the Duluth Complex, Minnesota, U.S.A [abs.]: 27th International Geological Congress, Moscow, Abstracts, v. 6, p. 104. COPPER; DULUTH COMPLEX; GEOCHEMISTRY; GEOLOGY; LAKE COUNTY; LAYERED INTRUSION; MINNESOTA; NICKEL; SOUTH KAWISHIWI; SOUTH KAWISHIWI INTRUSION; STRATIGRAPHY; SULFIDE; SULFIDES; UNITED-STATES;

---, 1985, Setting and distribution of copper-nickel sulfides in the South Kawishiwi intrusion, Duluth Complex, Minnesota, in Kraft, K., ed., U. S. Geological Survey research on mineral resources, 1985:, U. S. Geological Survey, Circular 949, p. 12-13. COPPER; DISTRIBUTION; DULUTH COMPLEX; GEOLOGY; LAKE COUNTY; LAYERED INTRUSION; MINNESOTA; NICKEL; SOUTH KAWISHIWI; SOUTH KAWISHIWI INTRUSION; SULFIDE; SULFIDES; UNITED-STATES;

Foose, M. P., and Cooper, R. W., 1978, Preliminary geologic report on the Harris Lake area, northeastern Minnesota:, U. S. Geological Survey, Open- file Report 78-385, 24 p. DULUTH COMPLEX; GEOLOGY; HARRIS LAKE; LAYERED INTRUSION; MINNESOTA; UNITED-STATES;

---, 1978, Faulting in the Duluth Complex in Minnesota, in Geological Survey Research, 1977:, U. S. Geological Survey, Professional Paper 1100, p. 6. DULUTH COMPLEX; FAULT; LAYERED INTRUSION; MINNESOTA; STRUCTURAL-GEOLOGY; UNITED-STATES;

---, 1978, Faulting in part of the Duluth Complex, northeastern Minnesota [abs.]: 24th Annual Institute on Lake Superior Geology, Milwaukee, WI, v. 24, p. 12. DULUTH COMPLEX; FAULT; LAKE COUNTY; LAYERED INTRUSION; MINNESOTA; SOUTH KAWISHIWI INTRUSION; STRUCTURAL-GEOLOGY; UNITED-STATES;

---, 1980, Faulting in the Duluth Complex, in Geological Survey Research, 1979:, U. S. Geological Survey, Professional Paper 1150, p. 66. DULUTH COMPLEX; FAULT; LAYERED INTRUSION; MINNESOTA; STRUCTURAL-GEOLOGY; UNITED-STATES;

---, 1981, Faulting and fracturing in part of the Duluth Complex, northeastern Minnesota: Canadian Journal of Earth Sciences, v. 18, p. 810-814. DULUTH COMPLEX; LAYERED INTRUSION; MINNESOTA; SOUTH KAWISHIWI; STRUCTURAL-GEOLOGY; UNITED-STATES;

Foose, M. P., and Weiblen, P. W., 1986, The physical and chemical setting and textural and compositional characteristics of sulfide ores from the South Kawishiwi Intrusion, Duluth Complex, Minnesota, U.S.A, in 27th International Geological Congress (Moscow), Special Copper Symposium: New York, Springer-Verlag, p. 8-24. COPPER; DULUTH COMPLEX; GEOCHEMISTRY; LAKE COUNTY; LAYERED INTRUSION; MINNESOTA; NICKEL; PETROLOGY; SOUTH KAWISHIWI; SOUTH KAWISHIWI INTRUSION; SULFIDES; UNITED-STATES;

Forsyth, D. A., Milkereit, B., Davidson, A., Hanmer, S., Hutchinson, D. R., Hinze, W. J., and Mereu, R. F., 1994, Seismic images of a tectonic subdivision of the Grenville Orogen beneath lakes Ontario and Erie: Canadian Journal of Earth Sciences, v. 31, p. 229-242. AEROMAGNETIC ANOMALY; AEROMAGNETICS; CANADA; CENTRAL GNEISS BELT; CENTRAL METASEDIMENTARY BELT; CRUST; EXTENSIONAL TECTONICS; FAULTS; GEOPHYSICS; GRENVILLE OROGENY; GRENVILLE PROVINCE; ; ; NEW YORK; ONTARIO; REFLECTION; SEISMIC; SEISMIC-SURVEYS; STRUCTURAL-GEOLOGY; THRUST FAULT; UNITED-STATES; UPPER- PROTEROZOIC;

Foster, J. W., and Whitney, J. D., 1850, Report on the geology and topography of a portion of the Lake Superior land district in the State of Michigan:, U. S. 31st Congress, 1st Session, House Executive Document 69, 227 p. COPPER; GEOLOGY; MICHIGAN; MICHIGAN COPPER DISTRICT; MINERALIZATION; NATIVE COPPER; TOPOGRAPHY; UNITED-STATES; UPPER-PENINSULA;

---, 1851, Report on the geology of the Lake Superior land district: Washington, D.C., A.B. Hamilton, 400 p. GEOLOGY; LAKE SUPERIOR; MICHIGAN; UNITED-STATES;

54 ---, 1851, On the age of the sandstone of Lake Superior, with a description of the phenomena of the association of igneous rocks: Proceedings of the America Association for the Advancement of Science, v., p. 22-38. Fifth Meeting LAKE SUPERIOR; MICHIGAN; SANDSTONE; SEDIMENTARY-ROCKS; UNITED-STATES; UPPER-PENINSULA; WISCONSIN;

Foster, M. E., 1981, Analysis of small-scale structures in the Duluth Complex at Bardon Peak, St. Louis County, Minnesota [M.S. Thesis]: University of Minnesota, Duluth, 144 p. BARDON PEAK; DULUTH COMPLEX; LAYERED INTRUSION; MINNESOTA; ST. LOUIS COUNTY; STRUCTURAL-GEOLOGY; UNITED-STATES;

Foster, M. E., and Hudleston, P. J., 1986, "Fracture cleavage" in the Duluth Complex, northeastern Minnesota: Geological Society of America Bulletin, v. 97, p. 85-96. BARDON PEAK; DULUTH COMPLEX; LAYERED INTRUSION; MINNESOTA; STRUCTURAL-GEOLOGY; UNITED- STATES;

Foster, R. L., 1963, Mineralization in Cook County, Minnesota: Economic Geology, v. 58, p. 796-800. ALTERATION; AMYGDALOIDAL BASALT; ASH-FLOW TUFF; CASCADE RIVER; CHALCOPYRITE; COOK COUNTY; COPPER; CUTFACE CREEK; GEOCHEMISTRY; LOGAN SILLS; MALACHITE; MINERALIZATION; MINNESOTA; NATIVE COPPER; NORTH SHORE VOLCANIC GROUP; SULFIDE; SULFIDES; UNITED-STATES; VOLCANIC ROCKS;

Fowler, J. H., and Kuenzi, W. D., 1978, Keweenawan turbidites in Michigan (deep borehole ); a foundered basin sequence developed during evolution of a protoceanic rift system: Journal of Geophysical Research, v. 83, no. B12, p. 5833-5843. ARKOSE; BOUMA SEQUENCE; CAMBRIAN; CHARLEVOIX-COUNTY; CLASTIC-ROCKS; CROSS-STRATIFICATION; GRADED BEDDING; GRATIOT-COUNTY; LIVINGSTON COUNTY; LOWER PENINSULA; MCCLURE-SPARKS NO. 1; MESSMORE NO. 1; MICHIGAN; MICHIGAN-BASIN; MT. SIMON SANDSTONE; ; PALEOZOIC; PHANEROZOIC; PLATE TECTONICS; RED-BEDS; RIFTING; SEDIMENTARY STRUCTURES; SEDIMENTARY-ROCKS; SEDIMENTATION; SEDIMENTS; STATE-BEAVER ISLAND NO. 1; STATE-BEAVER ISLAND NO. 2; STRATIGRAPHY; TECTONOPHYSICS; TRANSPORT; TURBIDITE; TURBIDITY CURRENT STRUCTURES; TURBIDITY- CURRENTS; UNITED-STATES;

Fox, A. J., 1988, An integrated geophysical study of the southeastern extension of the Midcontinent Rift System [M.S. Thesis]: Purdue University, West Lafayette, Indiana, 112 p. GEOPHYSICS; LAKE MICHIGAN; LOWER PENINSULA; MICHIGAN; UNITED-STATES; UPPER- PENINSULA;

Franklin, J. M., 1970, Metallogeny of the Proterozoic rocks of , Ontario [Ph.D. Dissertation]: University of Western Ontario, Hamilton, Ontario, Canada, 317 p. CANADA; DISTRICT OF THUNDER BAY; METALLOGENY; ONTARIO; THUNDER BAY;

Franklin, J. M., Kissin, S. A., Smyk, M. C., and Scott, S. D., 1986, Silver deposits associated with Proterozoic rocks of the Thunder Bay District, Ontario: Canadian Journal of Earth Sciences, v. 23, p. 1576-1591. ACANTHITE; ALKALIC COMPLEX; ALKALINE; ALKALINE INTRUSION; ALLEMONTITE; ALTERATION; ANIMIKIE; ANNABERGITE; ARGENTITE; ARSENIDES; ARSENOPOLYBASITE; AZURITE; BADGER MINE; BARITE; BEAVER JR. MINE; BEAVER MINE; BORNITE; CALCITE; CANADA; CANADIAN SHIELD; CERUSSITE; CHALCOCITE; CHALCOPYRITE; COBALTITE; COLDWELL COMPLEX; COVELLITE; CRESWEL MINE; DEWATERING; DIKES; DISTRICT OF THUNDER BAY; DOMEYKITE; ECONOMIC GEOLOGY; EDWARD ISLAND MINE; ERYTHRITE; FAULTS; FLUID; FLUORITE; FRACTURES; GALENA; GANGUE; GENESIS; GUNFLINT FORMATION; HOST ROCKS; KEYSTONE MINE; LEAD ISOTOPES; LEAD-LEAD; LISTRIC FAULTS; LOELLINGITE; LOGAN SILLS; LOWER-PROTEROZOIC; MALACHITE; MARCASITE; METAMORPHISM; MINERALIZATION; MINERALOGY; NATIVE-SILVER; NICCOLITE; NORMAL-FAULTS; ONTARIO; ORE-DEPOSITS; ORIGIN; PARAGENESIS; PORCUPINE MINE; PORT COLDWELL; PYARGYYRITE; PYRITE; QUETICO SUBPROVINCE; RABBIT MOUNTAIN MINE; RADIOGENIC ISOTOPES; RHODOCHROSITE; ROVE FORMATION; SAFFLORITE; SHEAR ZONES; MINE; SILLS; SILVER; SILVER CREEK MINE; MINE; SILVER MOUNTAIN MINE; SKUTTERUDITE; SMITHSONITE; SPHALERITE; STEPHANITE; STRUCTURAL- GEOLOGY; SULFARSENIDES; SULFIDES; SUPERIOR PROVINCE; VEINS; WAWA SUBPROVINCE; WEST BEAVER MINE;

Franklin, J. M., and Kustra, C. R., 1970, Proterozoic rocks in the Thunder Bay area: 16th Annual Institute on Lake Superior Geology, Thunder Bay, ONT, v. 16, Field Trip Guide, p. 49-68. ALKALIC COMPLEX; ALKALINE; ALKALINE INTRUSION; ANIMIKIE; CANADA; COLDWELL COMPLEX; CRESWEL MINE; DIABASE; DIKES; DISTRICT OF THUNDER BAY; GEOLOGY; GUIDEBOOK; GUNFLINT FORMATION; GUNFLINT IRON-FORMATION; IRON-FORMATION; LOGAN SILLS; LOWER-PROTEROZOIC; ONTARIO; OSLER GROUP; PORT COLDWELL; ROVE FORMATION; SIBLEY GROUP; SILLS; SILVER; SILVER ISLET MINE; STRATIGRAPHY; STRUCTURAL-GEOLOGY; THUNDER BAY;

---, 1972, The Proterozoic rocks of the Lake Superior area, northwestern Ontario:, International Geological Congress, 24th Session, Canada, Guidebook for Field Excursion C34, 74 p. CANADA; DISTRICT OF THUNDER BAY; GUIDEBOOK; ONTARIO; PROTEROZOIC;

Frantti, G. E., 1954, Geophysical investigations in the eastern half of the Upper Peninsula of Michigan [M.S. Thesis]: Michigan Technological University, Houghton GEOPHYSICS; MICHIGAN; UNITED-STATES; UPPER-PENINSULA;

Frarey, M. J., 1977, Geology of the Huronian belt between Sault Ste. Marie and Blind River, Ontario:, Geological Survey of Canada, Memoir 383, 87 p. AREAL-GEOLOGY; BLIND RIVER; BRUCE-MINES; CANADA; COBALT-GROUP; DEAN-LAKE; ECHO-LAKE; ELLIOT LAKE GROUP; GEOLOGIC-MAPS; GEOLOGY; HOUGH LAKE GROUP; HURONIAN; ILE-PARISIENNE; LAKE-GEORGE; MAPS; ONTARIO; QUIRKE LAKE GROUP; SAULT STE. MARIE; SEDIMENTARY-ROCKS; SEDIMENTS; STRATIGRAPHY; WAKWEKOBI-LAKE;

French, B. M., 1965, Progressive contact metamorphism of the Biwabik Iron-Formation on the Mesabi Range, Minnesota [abs.]: 11th Annual Institute on Lake Superior Geology, St. Paul, MN, v. 11, p. 13-14. ANIMIKIE GROUP; BIWABIK IRON-FORMATION; CONTACT METAMORPHISM; DULUTH COMPLEX; IRON-FORMATION; LOWER-PROTEROZOIC; MESABI RANGE; METAMORPHISM; MINERALOGY; MINNESOTA; TACONITE; UNITED-STATES;

55 ---, 1968, Progressive contact metamorphism of the Biwabik Iron-Formation, Mesabi Range, Minnesota:, Minnesota Geological Survey, Bulletin 45, 103 p. CONTACT METAMORPHISM; DULUTH COMPLEX; IRON ORE; IRON-FORMATION; LAYERED INTRUSION; LOWER- PROTEROZOIC; MESABI RANGE; METAMORPHISM; MINNESOTA; UNITED-STATES;

French, R. B., and Van der Voo, R., 1975, Paleomagnetism of the Jacobsville Sandstone, Michigan [abs.]: Eos (American Geophysical Union Transactions), v. 56, p. 596. AGE DATING; CAMBRIAN; GEOCHRONOLOGY; GEOPHYSICS; HADRYNIAN; JACOBSVILLE-SANDSTONE; LOWER-CAMBRIAN; MICHIGAN; PALEOMAGNETISM; PALEOZOIC; PHANEROZOIC; POLE-POSITIONS; SANDSTONE; SEDIMENTARY-ROCKS; SEDIMENTS; STRATIGRAPHY; UNITED-STATES; UPPER-PRECAMBRIAN;

French, W. A., 1976, Silver mining in the Thunder Bay region 1845-1891: An examination of its economic viability [B.A. Thesis]: Lakehead University, Thunder Bay, Ontario, Canada, 44 p. CANADA; DISTRICT OF THUNDER BAY; ECONOMICS; HISTORY; MINERALIZATION; MINING; ONTARIO; SILVER;

Frey, B. A., 1995, Central Minnesota, U.S.A. core logging and assay databases [abs.]: 41st Annual Institute on Lake Superior Geology, Marathon, ONT, v. 41, p. 18-19. ARCHEAN; ARROWHEAD MINE; ARSENIC; BASE METAL ANALYSES; COPPER; DRILL CORE; GEOCHEMISTRY; GOLD; GRAPHITE; HEMATITE; IRON-FORMATION; LEAD; LITHIUM; MAGNETITE; MAJOR ELEMENT ANALYSES; MINNESOTA; MINOR ELEMENT ANALYSES; PALLADIUM; PGE; PLATINUM; PLATINUM-GROUP ELEMENTS; RARE-EARTH ELEMENTS; REE; SULFIDES; TOURMALINE; TRACE ELEMENT ANALYSES; UNITED-STATES; WHOLE ROCK ANALYSES; ZINC;

Frey, F. A., Haskin, M. A., Poetz, J. A., and Haskin, L. A., 1968, Rare earth abundances in some basic rocks: Journal of Geophysical Research, v. 73, p. 6085-6098. GEOCHEMISTRY; MAFIC; RARE-EARTH ELEMENTS; REE;

Frey, M. G., 1939, Geology of the region about the west end of Lake Superior [Ph.D. Dissertation]: University of Minnesota, Minneapolis, 83 p. DOUGLAS-FAULT; FAULTS; GEOLOGY; GEOPHYSICS; MAGNETIC-SURVEYS; MAGNETICS; MINNESOTA; STRUCTURAL-GEOLOGY; WISCONSIN;

Fritts, C. C., Jr., 1931, Carbonaceous matter of the Nonesuch Shale (northeastern Wisconsin) [M.S. Thesis]: University of Wisconsin, Madison, 20 p. CARBONACEOUS-COMPOSITION; COMPOSITION; MICHIGAN; NONESUCH SHALE; NORTHEASTERN-WISCONSIN; ORONTO- GROUP; SEDIMENTARY-PETROLOGY; SEDIMENTARY-ROCKS; SEDIMENTS; UNITED-STATES; WISCONSIN;

Fritts, C. E., 1952, A petrologic study of the Mount Houghton felsite [M.S. Thesis]: Michigan Technological University, Houghton, 42 p. KEWEENAW PENINSULA; MICHIGAN; MOUNT HOUGHTON FELSITE; PETROLOGY; UNITED-STATES; UPPER-PENINSULA; VOLCANIC ROCKS;

---, 1965, Stratigraphy, structure, and granitic rocks in the Marenisco-Watersmeet area, Michigan [abs.]: 11th Annual Institute on Lake Superior Geology, St. Paul, MN, v. 11, p. 15. ANIMIKIE; GRANITE; JACOBSVILLE-SANDSTONE; LAKE-GOGEBIC; LOWER-PROTEROZOIC; MARENISCO; MICHIGAN; SANDSTONE; STRATIGRAPHY; STRUCTURAL-GEOLOGY; UNITED-STATES; UPPER-PENINSULA; VOLCANIC ROCKS; WATERSMEET;

---, 1969, Bedrock geologic map of the Marenisco-Watersmeet area, Gogebic and Ontonagon Counties, Michigan: U. S. Geological Survey, Miscellaneous Investigations Series, Map I-576, scale 1:48,000. ANTICLINES; BARB LAKE FAULT; FAULTS; GOGEBIC-COUNTY; LAKE- GOGEBIC; MAP; MARENISCO; MARSH CREEK FAULT; MICHIGAN; MONOCLINE; ONTONAGON-COUNTY; SEDIMENTARY-ROCKS; SEDIMENTS; STRUCTURAL-GEOLOGY; UNITED-STATES; WATERSMEET;

Fritz, M., 1985, Kansas well going deeper: American Association of Petroleum Geologists Explorer, v. 6, no. 1, p. 1. ABILENE-ARCH; ECONOMIC GEOLOGY; FOREST CITY BASIN; FREDA-SANDSTONE; JACOBSVILLE-SANDSTONE; KANSAS; MOUNT SIMON FORMATION; NORTHEASTERN-KANSAS; ORONTO-GROUP; PETROLEUM; RICE-FORMATION; SALINA-BASIN; SANDSTONE; SEDIMENTARY-ROCKS; SEDIMENTS; UNITED-STATES; WASHINGTON-COUNTY;

---, 1985, Mid-Continent exploration continues; Rift remains an intriguing frontier: American Association of Petroleum Geologists Explorer, v. 6, no. 7, p. 18-20. ASHLAND-SYNCLINE; BAYFIELD-COUNTY; ECONOMIC GEOLOGY; EXPLORATION; FUEL-RESOURCES; SEDIMENTARY-ROCKS; SEDIMENTS; UNITED-STATES; WISCONSIN;

---, 1988, Mid-Continent Rift keeps high profile: American Association of Petroleum Geologists Explorer, v. 9, no. 1, p. 16-17. CARROLL COUNTY; COPPER; ECONOMIC GEOLOGY; EXPLORATION; IOWA; KANSAS; MICHIGAN; MICHIGAN COPPER DISTRICT; NONESUCH SHALE; OIL-SEEPS; ONTONAGON-COUNTY; ORONTO-GROUP; PETROLEUM; SEDIMENTARY-BASINS; SEDIMENTARY-ROCKS; SEDIMENTS; UNITED-STATES; UPPER-PENINSULA; WASHINGTON COUNTY KANSAS; WHITE PINE MINE;

Fukui, L. M., 1976, The mineralogy and petrology of the South Kawishiwi intrusion, Duluth Complex, Minnesota [M.S. Thesis]: University of Illinois, Chicago Circle, 110 p. DRILL HOLES; B1-128; BABBITT; DULUTH COMPLEX; LAYERED INTRUSION; MINERAL CHEMISTRY; MINERAL DEPOSIT; MINERALOGY; MINNAMAX; MINNESOTA; NM-5; PARTRIDGE RIVER INTRUSION; PETROLOGY; SOUTH KAWISHIWI; SOUTH KAWISHIWI INTRUSION; ST. LOUIS COUNTY; TIGER BOY; UNITED-STATES;

---, 1976, The mineralogy and petrology of drill core NM-5, South Kawishiwi intrusion, Duluth Complex, Minnesota [abs.]: First annual student conference in earth science, abstracts with program, Madison, University of Wisconsin DULUTH COMPLEX; LAKE COUNTY; LAYERED INTRUSION; MINERALOGY; MINNESOTA; NM-5; PETROLOGY; SOUTH KAWISHIWI INTRUSION; UNITED-STATES;

Gardner, J. E., 1987, Trace-element and Nd-isotope evidence for the origin of the stratifications of the Endion Sill, Duluth, Minnesota [M.A. Thesis]: Washington University, St. Louis, Missouri, 359 p. DULUTH COMPLEX; ENDION SILL; GEOCHEMISTRY; IGNEOUS PROCESS; LAYERED INTRUSION; MINNESOTA; NEODYMIUM ISOTOPES; RADIOGENIC ISOTOPES; SAMARIUM-NEODYMIUM; SILLS; UNITED-STATES;

56 Geerts, S., Barnes, R. J., and Hauck, S. A., 1990, Geology and mineralization in the Dunka Road copper-nickel mineral deposit, St. Louis County, Minnesota: Duluth, Natural Resources Research Institute, University of Minnesota, Technical Report NRRI/GMIN-TR-89-16, 89 p. COPPER; DULUTH COMPLEX; DUNKA ROAD; GEOCHEMISTRY; GEOLOGY; GEOSTATISTICS; LAYERED INTRUSION; MINERAL DEPOSIT; MINERAL DEPOSITS; MINERALIZATION; MINNESOTA; NICKEL; NRRI; ORE DEPOSIT; PARTRIDGE RIVER INTRUSION; PARTRIDGE RIVER TROCTOLITE SERIES; ST. LOUIS COUNTY; STRATIGRAPHY; SULFIDE; SULFIDES; UNITED-STATES;

Geerts, S. D., 1990, Geology and mineralization in the Dunka Road copper-nickel mineral deposit, St. Louis County, Minnesota [abs.]: 36th Annual Institute on Lake Superior Geology, Thunder Bay, ONT, v. 36, p. 24-25. COPPER; DULUTH COMPLEX; DUNKA ROAD; GEOLOGY; LAYERED INTRUSION; MINERAL DEPOSIT; MINERALIZATION; MINNESOTA; NICKEL; ORE DEPOSIT; PARTRIDGE RIVER; PARTRIDGE RIVER INTRUSION; PARTRIDGE RIVER TROCTOLITE SERIES; ST. LOUIS COUNTY; SULFIDE; SULFIDES; UNITED- STATES;

---, 1991, Geology of platinum group element-enriched horizons within the Dunka Road copper-nickel prospect, St. Louis County, Minnesota [abs.]: 37th Annual Institute on Lake Superior Geology, Eau Claire, WI, v. 37, p. 45-46. COPPER; DULUTH COMPLEX; DUNKA ROAD; GEOLOGY; LAYERED INTRUSION; MINERAL DEPOSIT; MINERALIZATION; MINNESOTA; NICKEL; ORE DEPOSIT; PARTRIDGE RIVER INTRUSION; PARTRIDGE RIVER TROCTOLITE SERIES; PGE; PLATINUM-GROUP ELEMENTS; ST. LOUIS COUNTY; STRATIFORM; STRATIGRAPHY; SULFIDE; SULFIDES; UNITED-STATES;

---, 1991, Geology, stratigraphy, and mineralization of the Dunka Road Cu-Ni prospect, northeastern Minnesota: Duluth, Natural Resources Research Institute, University of Minnesota, Technical Report NRRI/TR-91/14, 59 p. COPPER; DULUTH COMPLEX; DUNKA ROAD; GEOLOGY; LAYERED INTRUSION; MINERAL DEPOSIT; MINERALIZATION; MINNESOTA; NICKEL; NRRI; ORE DEPOSIT; PARTRIDGE RIVER INTRUSION; PARTRIDGE RIVER TROCTOLITE SERIES; PGE; PLATINUM-GROUP ELEMENTS; ST. LOUIS COUNTY; STRATIGRAPHY; SULFIDE; SULFIDES; UNITED-STATES;

---, 1994, Petrography and geochemistry of a platinum group element-bearing mineralized horizon in the Dunka Road prospect, (Keweenawan) Duluth Complex, northeastern Minnesota [M.S. Thesis]: University of Minnesota, Duluth, 155 p. ALTERATION; BASE METAL ANALYSES; BISMUTH; BORNITE; CHALCOPYRITE; CLINOPYROXENE; COPPER; CPX; CUBANITE; DULUTH COMPLEX; DUNKA ROAD; FOOTWALL; FRACTURES; FROODITE; GALENA; GEOCHEMISTRY; GEOTHERMOMETRY; GOLD; ILMENITE; MACKINAWITE; MAFIC; MAJOR ELEMENT ANALYSES; MAUCHERITE; MICHENERITE; MINERAL CHEMISTRY; MINERAL DEPOSIT; MINERALIZATION; MINNESOTA; MINOR ELEMENT ANALYSES; NATIVE BISMUTH; NATIVE COPPER; NATIVE-SILVER; NICCOLITE; NICKEL; OLIVINE; OPX; ORTHOPYROXENE; PALLADIUM; PARTRIDGE RIVER INTRUSION; PARTRIDGE RIVER TROCTOLITE SERIES; PENTLANDITE; PETROGRAPHY; PGE; PLAGIOCLASE; PLATINUM; PLATINUM-GROUP ELEMENTS; PYRITE; PYROXENE; PYRRHOTITE; RARE- EARTH ELEMENTS; REE; SILVER; SPHALERITE; ST. LOUIS COUNTY; STRATABOUND; STRATIGRAPHY; STRUCTURAL-GEOLOGY; SULFIDES; SULFUR; TALNAKHITE; TRACE ELEMENT ANALYSES; ULTRAMAFIC; UNITED-STATES; VALLERIITE; VIOLARITE; VIRGINIA FORMATION; WHOLE ROCK ANALYSES;

Geerts, S. D., Hauck, S., and Morton, P., 1990, Palladium mineralization within the Dunka Road copper-nickel mineral deposit, Duluth Complex, NE Minnesota [abs.]: Geological Society of America Abstracts with Programs, v. 22, p. A137. COPPER; DULUTH COMPLEX; DUNKA ROAD; LAYERED INTRUSION; MINERAL DEPOSIT; MINERAL DEPOSITS; MINERALIZATION; MINNESOTA; NICKEL; ORE DEPOSIT; ORIGIN; PALLADIUM; PARTRIDGE RIVER INTRUSION; PARTRIDGE RIVER TROCTOLITE SERIES; PGE; PLATINUM-GROUP ELEMENTS; ST. LOUIS COUNTY; STRATIGRAPHY; SULFIDE; SULFIDES; UNITED-STATES;

Gehman, H. M., 1957, The petrology of the Beaver Bay Complex, Lake County, Minnesota [Ph.D. Dissertation]: University of Minnesota, Minneapolis, 92 p. BEAVER BAY; BEAVER BAY COMPLEX; DULUTH COMPLEX; LAKE COUNTY; LAYERED INTRUSION; MINNESOTA; PETROLOGY; UNITED-STATES;

---, 1958, The petrology of the Beaver Bay Complex [abs.]: 4th Annual Institute on Lake Superior Geology, Duluth, MN, v. 4, p. 1. ANORTHOSITE; BEAVER BAY COMPLEX; DIKES; DULUTH COMPLEX; FERROGABBRO; GABBRO; LAKE COUNTY; MINNESOTA; PETROLOGY; SILLS; UNITED-STATES; XENOLITHS;

Geometrix, 1978, Aerial gamma ray and magnetic survey--Peninsula portion, Hancock Quadrangle, Michigan, Ashland Quadrangle, Wisconsin/Michigan/Minnesota, Iron River Quadrangle, Michigan/Wisconsin, Marquette Quadrangle, Michigan:, U. S. Department of Energy, Open- File Report GJBX-50(78), 103 p. AERIAL GAMMA RAY; AERIAL GAMMA RAY SURVEY; AEROMAGNETIC SURVEY; AEROMAGNETICS; AIRBORNE RADIOMETRICS; ARCHEAN; ASHLAND 2 DEGREE QUADRANGLE; GEOPHYSICS; HANCOCK 2 DEGREE QUADRANGLE; IRON RIVER 2 DEGREE QUADRANGLE; LOWER-PROTEROZOIC; MARQUETTE 2 DEGREE QUADRANGLE; MICHIGAN; MINNESOTA; UNITED-STATES; UPPER-PENINSULA; WISCONSIN;

Geul, J. J. C., 1970, Geology of Devon and Pardee Townships and the Stuart location:, Ontario Department of Mines, Geological Report 87, 52 p. Accompanied by Map 2207, scale 1 inch to 1/2 mile ANIMIKIE; ANIMIKIE GROUP; BLACK-SHALE; CANADA; CROOKS TOWNSHIP; CRYSTAL LAKE INTRUSION; DEVON TOWNSHIP; DIABASE; DISTRICT OF THUNDER BAY; GEOLOGY; LOGAN SILLS; LOWER- PROTEROZOIC; MAP; MCKELLAR ISLAND; MINNESOTA; ONTARIO; PARDEE TOWNSHIP; PIGEON RIVER DIKES; PINE RIVER- MOUNT MOLLIE INTRUSION; PYRITE; ROVE FORMATION; SEDIMENTS; STRATIGRAPHY; UNITED-STATES;

---, 1970, Geology of Devon and Pardee Townships and the Stuart location: Ontario Department of Mines, Map 2207, scale 1:31,680. ANIMIKIE; CANADA; CRYSTAL LAKE INTRUSION; DEVON TOWNSHIP; DIABASE; DISTRICT OF THUNDER BAY; GEOLOGY; LOWER- PROTEROZOIC; MAP; ONTARIO; PARDEE TOWNSHIP; PINE RIVER-MOUNT MOLLIE INTRUSION; ROVE FORMATION;

---, 1973, Geology of Crooks Township, Jarvis and Prince locations and offshore islands, District of Thunder Bay:, Ontario Division of Mines, Geological Report 102, 46 p. Accompanied by Map 2250, scale 1 inch to 1 mile ANIMIKIE; BLACK-SHALE; CANADA; DIABASE; DISTRICT OF THUNDER BAY; GRAYWACKE; LOGAN SILLS; LOWER-PROTEROZOIC; MAP; ONTARIO; PIGEON RIVER DIKES; PIGEON RIVER

57 SILLS; PYRITE; ROVE FORMATION; SEDIMENTATION; SEDIMENTS; SIBLEY PENINSULA; SILLS; SQUAW BAY; TURBIDITY- CURRENTS;

---, 1973, Geology of the Crooks Township, Jarvis and Prince locations, and offshore islands, District of Thunder Bay: Ontario Division of Mines, Map 2250, scale 1:62,360. ANIMIKIE; CANADA; CROOKS TOWNSHIP; CRYSTAL LAKE INTRUSION; DISTRICT OF THUNDER BAY; GEOLOGY; LOWER-PROTEROZOIC; MAP; ONTARIO; PINE RIVER-MOUNT MOLLIE INTRUSION; ROVE FORMATION;

Gibb, R. A., Hinze, W. J., and Thomas, M. D., 1994, Potential field studies of continental rifts - The - Introduction: Canadian Journal of Earth Sciences, v. 31, no. 4, p. 617-618. AEROMAGNETICS; GEOPHYSICS; GLIMPCE; PLATE TECTONICS; POTENTIAL FIELD; REFLECTION; RIFTING; SEISMIC;

Gibbons, M. G., 1975, Low frequency microseismic investigation of roof stability in the White Pine mine [M.S. Thesis]: Michigan Technological University, Houghton COPPER; GEOPHYSICS; MICHIGAN; MICHIGAN COPPER DISTRICT; MINE; MINING; ONTONAGON-COUNTY; SEISMIC; UNITED-STATES; UPPER-PENINSULA; WHITE PINE MINE;

Gibbs, A. K., Payne, B., Setzer, T., Brown, L. D., Oliver, J. E., and Kaufman, S., 1984, Seismic-reflection study of the Precambrian crust of Minnesota: Geological Society of America Bulletin, v. 95, p. 280-294. AEROMAGNETIC ANOMALY; AEROMAGNETICS; ARCHEAN; COCORP; CRUST; GEOPHYSICS; GIANTS RANGE BATHOLITH; GRANITE; GRAVITY; GRAVITY-ANOMALIES; GREAT LAKES TECTONIC ZONE; KANDIYOHI COUNTY; MANTLE; MINNESOTA; MOHO; MORRIS FAULT; QUIET ZONE; REFLECTION; SEISMIC; SEISMIC-SURVEYS; STEARNS COUNTY; SUPERIOR PROVINCE; TODD COUNTY; UNITED-STATES; VELOCITY;

Giblin, P. E., 1966, Recent exploration and mining developments in the Batchawana area of Ontario: Canadian Mining Journal, v. 87, no. 4, p. 77-80. BATCHAWANA BAY; CANADA; COPPER; DISTRICT OF ALGOMA; EXPLORATION; MAMAINSE POINT; MINING; ONTARIO; PROTEROZOIC;

---, 1966, Copper deposits of the Batchawana area, Ontario [abs.]: 12th Annual Institute on Lake Superior Geology, Sault Ste. Marie, MI, v. 12, p. 8. BORNITE; BRECCIA PIPE; CANADA; CHALCOCITE; CHALCOPYRITE; COPPER; DISTRICT OF ALGOMA; GALENA; MINERALIZATION; MOLYBDENITE; NATIVE COPPER; ONTARIO; PYRITE; SPHALERITE; VEINS;

---, 1969, Kincaid Township, District of Algoma: Ontario Department of Mines, Preliminary Map, Map P.553, scale 1:15,840. ALONA BAY; BASALT; CANADA; DISTRICT OF ALGOMA; FLOOD BASALTS; FREDA-SANDSTONE; GEOLOGY; INTERFLOW SEDIMENTS; JACOBSVILLE-SANDSTONE; KINCAID TOWNSHIP; MAFIC; MAMAINSE POINT; MAMAINSE POINT FORMATION; MAP; MICA BAY; ONTARIO; ORONTO-GROUP; SANDSTONE; SEDIMENTARY-ROCKS; SEDIMENTS; THOLEIITIC BASALT; VOLCANIC ROCKS;

---, 1969, Geology of the Mamainse Point area, District of Algoma: Ontario Department of Mines, Preliminary, Map P.554, scale 1:15,840. BASALT; CANADA; DISTRICT OF ALGOMA; GEOLOGY; MAMAINSE POINT; MAMAINSE POINT FORMATION; MAP; ONTARIO; VOLCANIC ROCKS;

---, 1969, Geology of Ryan Township, District of Algoma: Ontario Department of Mines, Preliminary, Map P.555, scale 1:15,840. CANADA; DISTRICT OF ALGOMA; GEOLOGY; MAP; ONTARIO; PROTEROZOIC;

---, 1969, Geology of Herrick Township, District of Algoma: Ontario Department of Mines, Preliminary, Map P.556, scale 1:15,840. CANADA; DISTRICT OF ALGOMA; GEOLOGY; MAP; ONTARIO; PROTEROZOIC;

---, 1969, Geology of Fisher Township, District of Algoma: Ontario Department of Mines, Preliminary, Map P.557, scale 1:15,840. CANADA; DISTRICT OF ALGOMA; GEOLOGY; MAP; ONTARIO; PROTEROZOIC;

---, 1971, Geology of Palmer Township, District of Algoma: Ontario Department of Mines, Preliminary, Map P.710, scale 1:15,840. CANADA; DISTRICT OF ALGOMA; GEOLOGY; MAP; ONTARIO; PROTEROZOIC;

---, 1974, Middle Keweenawan rocks of the Batchawana-Mamainse Point area: 20th Annual Institute on Lake Superior Geology, Sault Ste. Marie, v. 20, Field Trip 1, p. 39-67. AGE; ANTICLINE; BATCHAWANA BAY; BRECCIA PIPE; CANADA; COPPER; DIABASE; DIKES; DISTRICT OF ALGOMA; FAULTS; GEOLOGY; GEOPHYSICS; GUIDEBOOK; JACOBSVILLE-SANDSTONE; MAMAINSE POINT; MAMAINSE POINT FORMATION; MICA BAY FORMATION; MINERALIZATION; NORMAL POLARITY; ONTARIO; PALEOMAGNETISM; REVERSE POLARITY; SEDIMENTARY-ROCKS; STRUCTURAL-GEOLOGY; VEINS; VOLCANIC ROCKS;

---, 1982, area, District of Algoma, in Wood, J., White, O. L., Barlow, R. B., and Colvine, A. C., eds., Summary of field work, 1982:, Ontario Geological Survey, Miscellaneous Paper 106, p. 44-47. ALGOMA; AREAL-GEOLOGY; AWERES-TOWNSHIP; CANADA; DENNIS- TOWNSHIP; DISTRICT OF ALGOMA; ECONOMIC GEOLOGY; FENWICK-TOWNSHIP; GOULAIS RIVER; GOULAIS RIVER REGION; LITHOSTRATIGRAPHY; METAMORPHIC-ROCKS; MINERAL-RESOURCES; ONTARIO; PENNEFATHER-TOWNSHIP; PHANEROZOIC; SEDIMENTARY-ROCKS; SEDIMENTS;

---, 1982, Ile Parisienne and Rudderhead Point areas, District of Algoma, in Wood, J., White, O. L., Barlow, R. B., and Colvine, A. C., eds., Summary of field work, 1982:, Ontario Geological Survey, Miscellaneous Paper 106, p. 41-43. ARCHEAN; AREAL-GEOLOGY; CANADA; CONSTRUCTION-MATERIALS; DISTRICT OF ALGOMA; ECONOMIC GEOLOGY; JACOBSVILLE-SANDSTONE; LAKE SUPERIOR; LITHOSTRATIGRAPHY; METAMORPHIC-ROCKS; MICHIGAN; ONTARIO; PARISIAN-ISLAND; RUDDERHEAD-POINT; SANDSTONE; SEDIMENTARY-ROCKS; SEDIMENTS; UNITED-STATES;

58 Giblin, P. E., and Armbrust, G. A., 1974, Batchawana, Algoma District: Ontario Department of Mines, Map 2251, scale 1:63,360. ARCHEAN; BATCHAWANA BAY; CAMBRIAN; CANADA; DISTRICT OF ALGOMA; MAMAINSE POINT; MAP; ONTARIO; PALEOZOIC; PHANEROZOIC; STRUCTURAL-GEOLOGY;

Giblin, P. E., and Armburst, G. A., 1973, Geology of Batchawana Bay, Algoma District, Ontario: Ontario Department of Mines, Map 2251, scale 1:63,360. ARCHEAN; BATCHAWANA BAY; BATCHAWANA GREENSTONE BELT; CANADA; DISTRICT OF ALGOMA; MAP; ONTARIO; PROTEROZOIC;

Giblin, P. E., and Leahy, E. J., 1967, Sault Ste. Marie - Elliot Lake Sheet, Districts of Algoma, Manitoulin, and Sudbury: Ontario Department of Mines, Geological Compilation Series, Map 2108, scale 1:250,000. ARCHEAN; CANADA; DISTRICT OF ALGOMA; DISTRICT OF MANITOULIN; DISTRICT OF SUDBURY; GEOLOGY; MAP; ONTARIO; PROTEROZOIC;

Giblin, P. E., and Nivins, G., 1975, Second supplement to bibliography of current research of the geology of Lake Superior region: May 1974/May 1975: Marquette, MI, 21st Annual Institute on Lake Superior Geology, 19 p. ARCHEAN; BIBLIOGRAPHY; CANADA; CENOZOIC; DULUTH COMPLEX; ECONOMIC GEOLOGY; GEOCHEMISTRY; GEOLOGY; GEOPHYSICS; GLACIAL GEOLOGY; GRAVITY; GREENSTONE BELTS; LOWER-PROTEROZOIC; MAP; MELLEN COMPLEX; MICHIGAN; MINNESOTA; NORTH DAKOTA; ONTARIO; PALEOZOIC; PETROGRAPHY; PHANEROZOIC; PLATE TECTONICS; PLEISTOCENE; QUATERNARY; SEDIMENTARY-ROCKS; SEDIMENTATION; STRATIGRAPHY; UNITED-STATES; UPPER-PENINSULA; WISCONSIN;

Giguere, J. F., 1969, St. Ignace Island and vicinity, District of Thunder Bay, in: Ontario Department of Mines, Miscellaneous Paper 32, p. 28-30. DISTRICT OF THUNDER BAY; MICHIPICOTEN ISLAND; ONTARIO; ST. IGNACE ISLAND; VOLCANIC ROCKS;

---, 1970, St. Ignace Island and vicinity (west part), Lake Superior, District of Thunder Bay: Ontario Department of Mines, Preliminary Geologic, Map No. P. 615. CANADA; DISTRICT OF THUNDER BAY; MAP; ONTARIO; ST. IGNACE ISLAND; VOLCANIC ROCKS;

---, 1970, St. Ignace Island and vicinity (east part), Lake Superior, District of Thunder Bay: Ontario Department of Mines, Preliminary Geologic, Map No. P. 616. CANADA; MAP; ONTARIO; ST. IGNACE ISLAND; VOLCANIC ROCKS;

---, 1975, Geology of St. Ignace Island and adjacent islands, District of Thunder Bay:, Ontario Division of Mines, Geological Report 118, 35 p. BASALT; CANADA; DISTRICT OF THUNDER BAY; GABBRO; GEOLOGY; INTERFLOW SEDIMENTS; MAFIC; ONTARIO; OSLER GROUP; RING DIKE; SEDIMENTS; ST. IGNACE COMPLEX; ST. IGNACE ISLAND; THOLEIITIC BASALT; VOLCANIC ROCKS;

Gittins, J., McIntyre, R. M., and York, D., 1967, The ages of carbonatite complexes in eastern Canada: Canadian Journal of Earth Sciences, v. 4, p. 651-655. AGE DATING; ALKALIC COMPLEX; ALKALINE; BIG BEAVER HOUSE CARBONATITE COMPLEX; CAMBRIAN; CANADA; CARBONATITE; CARGILL TOWNSHIP CARBONATITE COMPLEX; DISTRICT OF ALGOMA; FIRESAND RIVER CARBONATITE COMPLEX; GEOCHRONOLOGY; GOLDRAY CARBONATITE COMPLEX; HECLA-KILMER ALKALIC COMPLEX; KAPUSKASING STRUCTURAL ZONE; LACKNER LAKE ALKALIC COMPLEX; MANITOU ISLAND ALKALIC COMPLEX; NEMOGOSENDA LAKE ALKALIC COMPLEX; NEWMAN ISLAND; ONTARIO; PALEOZOIC; PHANEROZOIC; POTASSIUM-ARGON; PRAIRIE LAKE CARBONATITE COMPLEX; QUEBEC; SEABROOK LAKE CARBONATITE COMPLEX;

Gmitro, T. T., 1990, Chemostratigraphy and petrogenesis of Keweenawan lavas at Alona Bay, Ontario [M.S. Thesis]: Northern Illinois University, De Kalb, 243 p. ALONA BAY; CANADA; DISTRICT OF ALGOMA; GENESIS; GEOCHEMISTRY; ONTARIO; PETROGENESIS; PETROLOGY; STRATIGRAPHY; VOLCANIC ROCKS;

Golder and Associates, 1978, Report to Minnesota Environmental Quality Board on Regional Copper-Nickel Study engineering aspects of tailing disposal: Minnesota Environmental Quality Board. CONSTRUCTION-MATERIALS; COPPER; DULUTH COMPLEX; ENGINEERING- GEOLOGY; LAYERED INTRUSION; MINNESOTA; NICKEL; REGIONAL COPPER-NICKEL STUDY; TAILING BASIN; TAILING DAM; TAILINGS; UNITED-STATES; WASTE ROCK;

Goldich, S. S., 1968, Geochronology in the Lake Superior region: Canadian Journal of Earth Sciences, v. 5, p. 171-1736. AGE DATING; GEOCHRONOLOGY; LAKE SUPERIOR; POTASSIUM-ARGON; PROTEROZOIC;

---, 1971, Lunar and terrestrial ilmenite basalt: Science, v. 171, no. 3977, p. 1245-1246. BASALT; DULUTH; DULUTH COMPLEX; GEOCHEMISTRY; HORNFELS; ILMENITE; LAYERED INTRUSION; LUNAR BASALT; MINNESOTA; ST. LOUIS COUNTY; TI; TITANIUM; UNITED-STATES; WHOLE ROCK ANALYSES;

---, 1972, Geochronology in Minnesota, in Sims, P. K., and Morey, G. B., eds., Geology of Minnesota: A Centennial Volume: St. Paul, Minnesota Geological Survey, p. 27-37. AGE DATING; ANIMIKIE; ANIMIKIE BASIN; ANIMIKIE GROUP; ARCHEAN; BIOTITE; CANADA; DULUTH COMPLEX; ELY GREENSTONE; ENDION SILL; GEOCHRONOLOGY; GIANTS RANGE; GOLD ISLAND GRANITE; GRANITE; GREENSTONE BELTS; GUNFLINT IRON-FORMATION; HORNBLENDE; ICARUS PLUTON; LAYERED INTRUSION; LEAD-LEAD; LINDEN SYENITE; LOWER-PROTEROZOIC; MAHNOMEN FORMATION; MELLEN COMPLEX; MINNESOTA; MINNESOTA RIVER VALLEY; MINNESOTA RIVER VALLEY SUBPROVINCE; MONTEVIDEO GNEISS; MORTON GNEISS; NEWTON LAKE FORMATION; NIPISSING DIABASE; NORTHERN LIGHT GNEISS; POTASSIUM FELDSPAR; POTASSIUM-ARGON; REDWOOD COUNTY; ROVE FORMATION; RUBIDIUM-STRONTIUM; SACRED HEART GRANITE; SAGANAGA; SEDIMENTARY-ROCKS; SILLS; ST. LOUIS COUNTY; THOMSON FORMATION; UNITED-STATES; URANIUM-LEAD; VERMILION DISTRICT; VERMILION GRANITE; VIRGINIA FORMATION; WISCONSIN; ZIRCON;

Goldich, S. S., Lidiak, E. G., Hedge, C. E., and Walthall, F. G., 1966, Geochronology of the midcontinent region, United States: Part 2, Northern area: Journal of Geophysical Research, v. 71, p. 5389-5408. AGE DATING; ARCHEAN; CANADA; COLORADO; DULUTH COMPLEX; GEOCHRONOLOGY; IOWA; LAYERED INTRUSION; LOWER-PROTEROZOIC; MANITOBA; MINNESOTA; MONTANA; NEBRASKA;

59 NORTH DAKOTA; NORTH SHORE VOLCANIC GROUP; POTASSIUM-ARGON; RUBIDIUM-STRONTIUM; SASKATCHEWAN; SOUTH DAKOTA; UNITED-STATES; UPPER-PROTEROZOIC; URANIUM-LEAD; VOLCANIC ROCKS; WISCONSIN; WYOMING; ZIRCON;

Goldich, S. S., and Nier, A. O., 1958, Problems of the division of Precambrian time [abs.]: 4th Annual Institute on Lake Superior Geology, Duluth, MN, v. 4, p. 11. AGE; AGE DATING; ANIMIKIE; ARCHEAN; DULUTH COMPLEX; GEOCHRONOLOGY; LOWER-PROTEROZOIC; METAMORPHISM; MINNESOTA; NORTH SHORE VOLCANIC GROUP; UNITED-STATES;

Goldich, S. S., Nier, A. O., and Baadsgaard, H., 1957, A40/K40 dating of rocks of the Lake Superior region [abs.]: 3rd Annual Institute on Lake Superior Geology, East Lansing, MI, v. 3, p. 2-3. AGE DATING; ANIMIKIE; ANIMIKIE BASIN; ANIMIKIE GROUP; ARCHEAN; BEAVER BAY COMPLEX; BELLINGHAM GRANITE; CUYUNA RANGE; DIABASE; DULUTH COMPLEX; GEOCHRONOLOGY; IRON- FORMATION; LAKE SUPERIOR REGION; MICHIGAN; MINNESOTA; MINNESOTA RIVER VALLEY; MINNESOTA RIVER VALLEY SUBPROVINCE; MORTON GNEISS; NORTHERN LIGHT GNEISS; NORTHWEST ANGLE; PENOKEAN; POTASSIUM-ARGON; ST. LOUIS COUNTY; THOMSON FORMATION; UNITED-STATES; UPPER-PENINSULA; VERMILION DISTRICT; WISCONSIN;

Goldich, S. S., Nier, A. O., Baadsgaard, H., Hoffman, J. H., and Krueger, H. W., 1961, The geology and geochronology of Minnesota:, Minnesota Geological Survey, Bulletin 41, 193 p. AGE DATING; ARCHEAN; GEOCHRONOLOGY; GEOLOGY; MINNESOTA; PENOKEAN; UNITED- STATES;

Goldich, S. S., and Taylor, R. B., 1956, The Duluth gabbro complex - first day, October 28, 1956, in Schwartz, G. M., ed., Field trip no. 1, Precambrian of northeastern Minnesota:, Geological Society of America, Guidebook Series, p. 29-41. DULUTH; DULUTH COMPLEX; DULUTH LAYERED SERIES; GUIDEBOOK; LAYERED INTRUSION; MINNESOTA; ST. LOUIS COUNTY; UNITED-STATES;

Goldich, S. S., Taylor, R. B., and Lucia, F. J., 1954, Geology of the Enger Tower area, Duluth, Minnesota [abs.]: Geological Society of America Bulletin, v. 65, p. 1256. ANORTHOSITE; ANORTHOSITIC SERIES; DULUTH; DULUTH COMPLEX; DULUTH LAYERED SERIES; ENGER TOWER; GEOLOGY; LAYERED INTRUSION; MINNESOTA; ST. LOUIS COUNTY; UNITED-STATES;

---, 1956, Geology of the Enger Tower area, Duluth, Minnesota, in Schwartz, G. M., ed., Field trip no. 1, Precambrian of northeastern Minnesota:, Geological Society of America, Guidebook Series, p. 67-90. ANORTHOSITE; ANORTHOSITIC SERIES; DULUTH; DULUTH COMPLEX; DULUTH LAYERED SERIES; ENGER TOWER; LAYERED INTRUSION; MINNESOTA; ST. LOUIS COUNTY; UNITED-STATES;

Goldman, A. L., Jr., 1976, A field guide and sourcebook to geology of the eastern Upper Peninsula of Michigan: Intended primarily for secondary earth science teachers: Western Michigan University Department of Geology, Kalamazoo, Michigan, Publication ES-3, 88 p. AU TRAIN FORMATION; ; CORDELL-DOLOMITE; ENGADINE-DOLOMITE; HENDRICKS-DOLOMITE; JACOBSVILLE- SANDSTONE; MANITOULIN-DOLOMITE; MICHIGAN; MUNISING-FORMATION; PALEOZOIC; PHANEROZOIC; POINTE AUX CHENES FORMATION; SAINT IGNACE DOLOMITE; SANDSTONE; SCHOOLCRAFT-DOLOMITE; SEDIMENTARY-ROCKS; SEDIMENTS; TRENTON-GROUP; UNITED-STATES;

Good, D. J., 1992, Genesis of copper-precious metal sulfide deposits in the Port Coldwell alkalic complex, Ontario [Ph.D. Dissertation]: McMaster University, Hamilton, Ontario, Canada, 203 p. ALKALIC COMPLEX; ALKALINE; ALKALINE INTRUSION; CANADA; COLDWELL COMPLEX; COPPER; DISTRICT OF THUNDER BAY; FRACTIONATION; GENESIS; GEOCHEMISTRY; GOLD; IGNEOUS-PROCESSES; MACRAE; MAGMATIC; MAGMATIC SULFIDES; MARATHON; MINERAL DEPOSITS; NICKEL; ONTARIO; ORE-DEPOSITS; ORIGIN; PETROGRAPHY; PETROLOGY; PGE; PLATINUM-GROUP ELEMENTS; PORT COLDWELL; SULFIDE LIQUID; SULFIDES; SUPERIOR PROVINCE; TWO DUCK LAKE INTRUSION;

---, 1992, Genesis of Cu-precious metal sulfide deposits in the Port Coldwell alkalic complex [abs.]: Laurentian University Symposium, March, 1992, 1 p. ALKALIC COMPLEX; ALKALINE; ALKALINE INTRUSION; CANADA; COLDWELL COMPLEX; COPPER; DISTRICT OF THUNDER BAY; GENESIS; MINERAL DEPOSITS; MINERALIZATION; ONTARIO; PORT COLDWELL; PRECIOUS METALS; SULFIDES;

---, 1993, Genesis of copper-precious metal sulfide deposits in the Port Coldwell alkalic complex:, Ontario Geological Survey, Open-File Report 5839, 231 p. ALKALIC COMPLEX; ALKALINE; ALKALINE INTRUSION; CANADA; COLDWELL COMPLEX; COPPER; DISTRICT OF THUNDER BAY; GENESIS; ONTARIO; ORE-DEPOSITS; ORIGIN; PGE; PLATINUM-GROUP ELEMENTS; PORT COLDWELL; SUPERIOR PROVINCE;

Good, D. J., and Crocker, J. H., 1989, Pge study of the Geordie Lake and Marathon Cu-Ni precious metal deposits, Coldwell alkalic complex, in Geoscience Research Grant Program, Summary of Research 1988-1989:, Ontario Geological Survey, Miscellaneous Paper 143, p. 186-198. ALKALIC COMPLEX; ALKALINE; ALKALINE INTRUSION; CANADA; COLDWELL COMPLEX; COPPER; DISTRICT OF THUNDER BAY; GEORDIE LAKE DEPOSIT; MARATHON; MARATHON DEPOSIT; MINERALIZATION; NICKEL; ONTARIO; PGE; PLATINUM-GROUP ELEMENTS; PORT COLDWELL; PRECIOUS METALS; SULFIDES;

Good, D. J., and Crocket, J. H., 1989, PGE study of the Geordie Lake and Marathon Cu-precious metal deposits, Coldwell Alkalic Complex, in Geoscience Research Grant Program, summary of Research 1988-1989:, Ontario Geological Survey, Miscellaneous Paper 143, p. 186-198. ALKALIC COMPLEX; ALKALINE; ALKALINE INTRUSION; ALTERATION; BASE METAL ANALYSES; CANADA; CHALCOPYRITE; COLDWELL COMPLEX; COPPER; DISSEMINATED ORE; DISTRICT OF THUNDER BAY; GEOCHEMISTRY; GEORDIE LAKE DEPOSIT; GEORDIE LAKE INTRUSION; MARATHON; MASSIVE SULFIDE ORE; MINERALIZATION; ONTARIO; ORE-DEPOSITS; PGE; PLATINUM- GROUP ELEMENTS; PORT COLDWELL; STABLE-ISOTOPES; SULFARSENIDES; SULFIDES; SULFUR ISOTOPES; SUPERIOR PROVINCE; TELLURIDES; TRACE ELEMENT ANALYSES;

---, 1994, Genesis of the Marathon Cu-platinum-group element deposit, Port Coldwell Alkalic Complex, Ontario: A Midcontinent rift-related magmatic sulfide deposit: Economic Geology, v. 89, p. 131-149. ALKALIC COMPLEX; ALKALINE; ALKALINE INTRUSION; CANADA; CHLORINE; CLINOPYROXENE; COLDWELL COMPLEX; COPPER; DISTRICT OF THUNDER BAY; DULUTH COMPLEX; GENESIS; GEOCHEMISTRY;

60 GOLD; LAYERED INTRUSION; MAGMATIC SULFIDES; MARATHON; MINERAL CHEMISTRY; MINERALIZATION; MINNESOTA; NICKEL; OLIVINE; ONTARIO; ORTHOPYROXENE; OUIS; OXIDE-BEARING ULTRAMAFIC INTRUSION; PARTRIDGE RIVER INTRUSION; PETROGRAPHY; PGE; PLAGIOCLASE; PLATINUM-GROUP ELEMENTS; PORT COLDWELL; PYROXENE; RARE-EARTH ELEMENTS; REE; SULFIDE; SULFIDES; SUPERIOR PROVINCE; TRACE ELEMENT ANALYSES; TWO DUCK LAKE INTRUSION; UNITED-STATES; WATER HEN; WATER HEN INTRUSION; WHOLE ROCK ANALYSES;

---, 1994, Origin of albite pods in the Geordie Lake gabbro, Port Coldwell alkaline complex, northwestern Ontario: Evidence for late-stage hydrothermal Cu-Pd mineralization: The Canadian Mineralogist, v. 32, p. 681-701. ACTINOLITE; ALBITE; ALKALIC COMPLEX; ALKALINE; ALKALINE INTRUSION; ALTAITE; AMPHIBOLE; ANTIMONIDES; APATITE; ARSENIDES; BIOTITE; BISMUTHINIDES; BORNITE; CANADA; CHALCOPYRITE; CLINOPYROXENE; COLDWELL COMPLEX; COPPER; DISTRICT OF THUNDER BAY; FLUID; GALENA; GEOCHEMISTRY; GEOLOGY; GEORDIE LAKE INTRUSION; GUANGLINITE; HESSITE; HORNBLENDE; HYDROTHERMAL; KOTULSKITE; MAJOR ELEMENT ANALYSES; MELONITE; MERENSKYITE; MICHENERITE; MINERAL CHEMISTRY; MINERALIZATION; MINOR ELEMENT ANALYSES; NEPHELINE; OLIVINE; ONTARIO; ORIGIN; ORTHOCLASE; PAOLOVITE; PETROLOGY; PGE; PLAGIOCLASE; PLATINUM-GROUP ELEMENTS; PORT COLDWELL; POTASSIUM FELDSPAR; PYRITE; RARE- EARTH ELEMENTS; REE; SOLUTIONS; SOPCHEITE; SPERRYLITE; SPHALERITE; SULFIDES; TELLURIDES; TELLURIUM; TEMPERATURE; TRACE ELEMENT ANALYSES; WHOLE ROCK ANALYSES;

---, 1994, Interrelationships between intrusive setting and the mode of Cu-PGE deposition: A comparative study of sulfide deposits in the Port Coldwell alkaline complex, Ontario [abs.]: Geological Association of Canada/Mineralogical Association of Canada Program with Abstracts, v., p. poster. ALKALIC COMPLEX; ALKALINE; ALKALINE INTRUSION; CANADA; COLDWELL COMPLEX; COPPER; DISTRICT OF THUNDER BAY; MINERAL DEPOSITS; MINERALIZATION; ONTARIO; ORIGIN; PGE; PLATINUM-GROUP ELEMENTS; PORT COLDWELL; SULFIDES;

Good, D., and Crocket, J. H., 1990, PGE study: The MacRae and Marathon copper-precious metal deposits, Coldwell Complex, in Geoscience Research Grant Program, Summary of Research 1989-1990:, Ontario Geological Survey, Miscellaneous Paper 150, p. 87-96. ALKALIC COMPLEX; ALKALINE; ALKALINE INTRUSION; BASE METAL ANALYSES; CANADA; CHALCOPYRITE; COLDWELL COMPLEX; COPPER; CUBANITE; DISTRICT OF THUNDER BAY; GEOCHEMISTRY; GEORDIE LAKE INTRUSION; MACRAE; MARATHON; ONTARIO; ORE- DEPOSITS; ORIGIN; PENTLANDITE; PGE; PLATINUM-GROUP ELEMENTS; PORT COLDWELL; PYRITE; PYRRHOTITE; SULFIDES; SUPERIOR PROVINCE; TRACE ELEMENT ANALYSES; TWO DUCK LAKE INTRUSION; WHOLE ROCK ANALYSES;

Goodden, J. J., 1974, Sedimentological aspects of underwater copper exploration in Lake Superior [M.S. Thesis]: University of Wisconsin, Madison CENOZOIC; COPPER; EXPLORATION; GEOCHEMISTRY; HOLOCENE; LAKE SUPERIOR; MONTREAL-RIVER; PHANEROZOIC; RECENT; SEDIMENTOLOGY; SEDIMENTS;

Gordon, M. B., and Hempton, M. R., 1983, The Keweenawan Rift: A collision-induced rift caused by the Grenville Orogeny? [abs.]: Eos (American Geophysical Union Transactions), v. 64, p. 852. COLLISION; GRENVILLE; OROGENY; PLATE TECTONICS; RIFTING; STRUCTURAL- GEOLOGY;

---, 1984, The Red Sea/Gulf of Aden rift: A modern analog for the Proterozoic mid continent (Keweenawan) rift [abs.]: Geological Society of America Abstracts with Programs, v. 16, p. 141. GULF OF ADEN; PLATE TECTONICS; RED SEA; RIFTING; STRUCTURAL-GEOLOGY;

---, 1986, Collision-induced rifting: The Grenville orogeny and the Keweenawan Rift of North America: Tectonophysics, v. 127, p. 1-25. COLLISION; GRENVILLE; OROGENY; PLATE TECTONICS; RIFTING; STRUCTURAL-GEOLOGY;

Gordon, W. C., and Lane, A. C., 1906, A geological section from Bessemer down Black River:, Michigan Geological Survey, Report, BASALT; BESSEMER; BLACK RIVER; COPPER HARBOR CONGLOMERATE; GEOLOGY; MICHIGAN; ORONTO-GROUP; THICKNESS; UNITED- STATES; UPPER-PENINSULA; VOLCANIC ROCKS;

Gorham, E., 1974, The ecological hazards of air pollution from smelters: Naturalist, v. 25, no. 2/3, p. 21-29. AIR POLLUTION; COPPER; DULUTH COMPLEX; ECOLOGY; ENVIRONMENT; ENVIRONMENTAL; MINERAL PROCESSING; MINNESOTA; NICKEL; POLLUTION; REGIONAL COPPER-NICKEL STUDY; SMELTING; SULFIDES; UNITED-STATES;

Graham, J. W., 1953, Changes of ferromagnetic minerals and their bearing on magnetic properties of rocks: Journal of Geophysical Research, v. 58, p. 243-260. BARAGA COUNTY; DIKES; GEOPHYSICS; MAGNETIC; MARQUETTE COUNTY; MICHIGAN; MINERALOGY; REVERSE POLARITY; UNITED-STATES;

Grant, N. K., and Chalokwu, C. I., 1992, Petrology of the Partridge River intrusion, Duluth Complex, Minnesota: II. Geochemistry and strontium isotope systematics in drill core DDH-221: Journal of Petrology, v. 33, p. 1007-1038. DRILL HOLE; B1-221; BABBITT; DULUTH COMPLEX; GEOCHEMISTRY; LAYERED INTRUSION; MINERAL DEPOSIT; MINNAMAX; MINNESOTA; PARTRIDGE RIVER INTRUSION; PETROLOGY; ST. LOUIS COUNTY; STRONTIUM ISOTOPES; TIGER BOY; TRACE ELEMENT ANALYSES; UNITED-STATES; WHOLE ROCK ANALYSES;

Grant, N. K., and Molling, P. A., 1981, A strontium isotope and trace element profile through the Partridge River troctolite, Duluth Complex, Minnesota: Contributions to Mineralogy and Petrology, v. 77, p. 296-305. DRILL HOLE; B1-295; BABBITT; COPPER; DULUTH COMPLEX; GEOCHEMISTRY; LAYERED INTRUSION; MINERAL DEPOSIT; MINNAMAX; MINNESOTA; NICKEL; PARTRIDGE RIVER INTRUSION; ST. LOUIS COUNTY; STRONTIUM ISOTOPES; TRACE ELEMENT ANALYSES; UNITED-STATES;

Grant, U. S., 1889, in 17th Annual Report:, Geological and Natural History Survey of Minnesota, p. 169-173. DULUTH COMPLEX; LAYERED INTRUSION; MINNESOTA; UNITED-STATES;

61 ---, 1892, The geology of Kekequabic Lake in northeastern Minnesota, with special reference to an augite soda-granite, in 21st Annual Report:, Geological and Natural History Survey of Minnesota, p. 5-58. ARCHEAN; ARGILLITE; CONGLOMERATE; DIABASE; DIKES; DULUTH COMPLEX; GABBRO; GEOLOGY; GRAYWACKE; GREENSTONE BELTS; KEKEQUABIC; KEKEQUABIC GRANITE; KEKEQUABIC LAKE; KNIFE LAKE GROUP; LAKE COUNTY; LAYERED INTRUSION; MINNESOTA; PETROGRAPHY; SANDSTONE; SCHIST; SEDIMENTARY-ROCKS; TUFF; UNITED-STATES;

---, 1894, Notes on the Keweenawan rocks of Grand Portage Island, north coast of Lake Superior: American Geologist, v. 13, p. 437-439. CONGLOMERATE; COOK COUNTY; GRAND PORTAGE ISLAND; MINNESOTA; PUCKWUNGE FORMATION; SEDIMENTARY-ROCKS; UNITED-STATES;

---, 1899, The geology of Akeley Lake plate, in Winchell, N. H., ed., The geology of Minnesota:, Geological and Natural History Survey of Minnesota, Final Report, v. 4, p. 462-480. AKELEY LAKE; DULUTH COMPLEX; GEOLOGY; LAYERED INTRUSION; MINNESOTA; UNITED-STATES;

---, 1899, The geology of Cook County, in Winchell, N. H., ed., The geology of Minnesota:, Geological and Natural History Survey of Minnesota, Final Report, v. 4, p. 313-345. ARCHEAN; COOK COUNTY; DULUTH COMPLEX; LAYERED INTRUSION; MINNESOTA; UNITED- STATES;

---, 1899, The geology Fraser Lake plate, in Winchell, N. H., ed., The geology of Minnesota:, Geological and Natural History Survey of Minnesota, Final Report, v. 4, p. 434-461. DULUTH COMPLEX; FRASER LAKE; GEOLOGY; LAYERED INTRUSION; MINNESOTA; UNITED-STATES;

---, 1899, The geology of Gabbro Lake plate, in Winchell, N. H., ed., The Geology of Minnesota:, Geological and Natural History Survey, Final Report, v. 4, p. 399-419. ARCHEAN; DULUTH COMPLEX; GREENSTONE BELTS; LAKE COUNTY; LAYERED INTRUSION; MINNESOTA; SOUTH KAWISHIWI; SOUTH KAWISHIWI INTRUSION; UNITED-STATES;

---, 1899, The geology of Gunflint Lake plate, in Winchell, N. H., ed., The geology of Minnesota:, Geological and Natural History Survey of Minnesota, Final Report, v. 4, p. 481-490. CONTACT METAMORPHISM; COOK COUNTY; DULUTH COMPLEX; GEOLOGY; GUNFLINT; GUNFLINT IRON-FORMATION; LAYERED INTRUSION; LOWER-PROTEROZOIC; METAMORPHISM; MINNESOTA; UNITED-STATES;

---, 1899, The geology of Rove Lake plate, in Winchell, N. H., ed., The geology of Minnesota:, Geological and Natural History Survey of Minnesota, Final Report, v. 4, p. 491-495. ANIMIKIE; DULUTH COMPLEX; GEOLOGY; LAYERED INTRUSION; LOWER-PROTEROZOIC; MINNESOTA; ROVE FORMATION; ROVE LAKE; UNITED-STATES;

---, 1899, The geology of Snowbank Lake plate, in Winchell, N. H., ed., The geology of Minnesota:, Geological and Natural History Survey of Minnesota, Final Report, v. 4, p. 420-433. ARCHEAN; DULUTH COMPLEX; GEOLOGY; GRANITE; LAKE COUNTY; LAYERED INTRUSION; MINNESOTA; SNOWBANK; SNOWBANK LAKE; UNITED-STATES;

---, 1900, Contact metamorphism of a basic : Geological Society of America Bulletin, v. 11, p. 503-510. CONTACT METAMORPHISM; DULUTH COMPLEX; LAYERED INTRUSION; MAFIC; METAMORPHISM; MINNESOTA; UNITED-STATES;

---, 1900, Preliminary report on the copper-bearing rocks of Douglas County, Wisconsin:, Wisconsin Geological and Natural History Survey, Bulletin 6, 55 p. BASALT; COPPER; DOUGLAS-COUNTY; FELSIC; INTERFLOW SEDIMENTS; SAINT CROIX HORST; UNITED-STATES; VOLCANIC ROCKS; WISCONSIN;

---, 1901, Preliminary report on the copper-bearing rocks of Douglas County, Wisconsin:, Wisconsin Geological and Natural History Survey, Bulletin 6, 83 p. COPPER; DOUGLAS-COUNTY; UNITED-STATES; WISCONSIN;

---, 1902, Junction of Lake Superior sandstone and Keweenawan traps in Wisconsin: Geological Society of America Bulletin, v. 13, p. 6-9. FAULTS; SANDSTONE; SEDIMENTARY-ROCKS; STRUCTURAL-GEOLOGY; UNITED-STATES; VOLCANIC ROCKS; WISCONSIN;

Green, A. G., 1988, Deep seismic profiling across the Great Lakes in the Lithoprobe Program--Sondages sismiques a grande profondeur realises dans les Grands Lacs dans le cadre du Programme Lithoprobe [abs.]: Geological Survey of Canada Current Activities Forum 1988, Program with Abstracts. CONTINENTAL-MARGIN; GEOPHYSICAL-PROFILES; GEOPHYSICAL-SURVEYS; GEOPHYSICS; GRENVILLE; GRENVILLE-FRONT; HURONIAN; LAKE SUPERIOR; LAKE-HURON; LITHOPROBE; LITHOSPHERE-PROGRAM; PENOKEAN OROGENY; SEDIMENTARY- ROCKS; SEDIMENTS; SEISMIC-SURVEYS;

Green, A. G., and Cannon, W., 1989, Introduction to GLIMPCE [abs.]: Eos (American Geophysical Union Transactions), v. 70, no. 15, p. 271. CANADA; CANADIAN SHIELD; GEOPHYSICS; GLIMPCE; GRENVILLE-FRONT; LAKE MICHIGAN; LAKE SUPERIOR; LAKE-HURON; NIAGARA FAULT ZONE; ONTARIO; REFLECTION; SEISMIC; SEISMIC-SURVEYS; UNITED-STATES; WISCONSIN MAGMATIC TERRANE;

Green, A. G., Cannon, W. F., Milkereit, B., Hutchinson, D. R., Davidson, A., Behrendt, J. C., Spencer, C., Lee, M. W., Morel a l'Huissier, P., and Agena, W. F., 1989, A ''GLIMPCE'' of the deep crust beneath the Great Lakes, in Mereu, R. F., Mueller, S., and Fountain, D. M., eds., Properties and processes of Earth's lower crust:, International Union of Geodesy and Geophysics, Geophysical Monograph 51, p. 65-80. ATTENUATION; CRUST; FAULTS; GEOPHYSICAL-SURVEYS; GEOPHYSICS; GROWTH-FAULTS; HURONIAN; JACOBSVILLE-SANDSTONE; LOWER-CRUST; MULTICHANNEL-METHODS; ORONTO-GROUP; REFLECTION; SANDSTONE; SEDIMENTARY-ROCKS; SEDIMENTS; SEISMIC- SURVEYS; TECTONOPHYSICS; UPPER-CRUST;

Green, J., 1990, Tridymite, other SiO2 minerals and the P-T trajectory of Keweenawan lavas, Minnesota [abs.]: 36th Annual Institute on Lake Superior Geology, Thunder Bay, ONT, v. 36, p. 26. CRISTOBALITE; MINNESOTA; NORTH SHORE VOLCANIC GROUP; TRIDYMITE; UNITED- STATES; VOLCANIC ROCKS;

62 Green, J. C., 1966, New field studies of the Keweenawan lavas of Minnesota [abs.]: 12th Annual Institute on Lake Superior Geology, Sault Ste. Marie, MI, v. 12, p. 9. ANORTHOSITE; COOK COUNTY; DULUTH COMPLEX; LAKE COUNTY; MINNESOTA; NORTH SHORE VOLCANIC GROUP; UNITED-STATES; VOLCANIC ROCKS; XENOLITHS;

---, 1968, Varieties of flows in the North Shore Volcanic Group, Minnesota [abs.]: 14th Annual Institute on Lake Superior Geology, Superior, WI, v. 14, p. 52-53. ALKALI OLIVINE BASALT; BASALT; MINNESOTA; NORTH SHORE VOLCANIC GROUP; OLIVINE THOLEIITE; RHYOLITE; TRACHYBASALT; UNITED-STATES; VOLCANIC ROCKS;

---, 1970, Lower rocks of the Gabbro Lake quadrangle, northeastern Minnesota:, Minnesota Geological Survey, Special Publication SP-13, 96 p. APLITE; ARCHEAN; CARBONATE IRON-FORMATION; CLEAR LAKE; CUMULATES; DIABASE; DIKE; ECONOMIC GEOLOGY; ELY GREENSTONE; FALL LAKE; FARM LAKE; FAULT; FELSIC; FOLDS; GABBRO LAKE; GABBRO LAKE QUADRANGLE; GARDEN LAKE; GEOCHEMISTRY; GEOLOGY; GIANTS RANGE; GRANITE; GRANITOID; GREENSTONE BELTS; INTRUSIVE; IRON-FORMATION; KINK FOLDS; KNIFE LAKE; KNIFE LAKE GROUP; MAFIC; MAJOR ELEMENTS; METAMORPHISM; MINNESOTA; MOOSE LAKE; NEWTON LAKE; NEWTON LAKE GROUP; NORTH KAWISHIWI RIVER; PEA SOUP LAKE; PEGMATITE; PETROLOGY; PILLOW BASALT; PORPHYRY; ST. LOUIS COUNTY; STRUCTURAL-GEOLOGY; STUB LAKE; SULFIDES; SYENITE; ULTRAMAFIC; UNITED-STATES; VARIOLITE; VOLCANIC;

---, 1971, Stratigraphy of the North Shore Volcanic Group, northeast of Silver Bay, Minnesota [abs.]: 17th Annual Institute on Lake Superior Geology, Duluth, MN, v. 17, p. 20-22. ANDESITE; BAPTISM RIVER; BASALTS; BELL HARBOR; BREAKWATER; BRULE RIVER; CROFTVILLE; DERONDA BAY; DEVIL TRACK; FELSITE; GEOPHYSICS; GOOD HARBOR; GRAND MARAIS; GRAND PORTAGE; HOVLAND; KIMBALL CREEK; LUCILLE ISLAND; LUTSEN; MAGNETIC REVERSAL; MANITOU; MARR ISLAND; MINNESOTA; NOPEMING; NORTH SHORE VOLCANIC GROUP; PALEOMAGNETISM; ; PUCKWUNGE; RED CLIFF; RED ROCK; RHYOLITES; SCHROEDER; SILVER BAY; STRATIGRAPHY; TERRACE POINT; THICKNESS; TOFTE; TRACHYBASALT; UNITED-STATES; VOLCANIC ROCKS;

---, 1971, The North Shore Volcanic Group: 17th Annual Institute on Lake Superior Geology, Duluth, Minnesota, Field Trip Guidebook, p. 73-96. FLOOD BASALTS; GUIDEBOOK; MINNESOTA; NORTH SHORE VOLCANIC GROUP; STRATIGRAPHY; UNITED-STATES; VOLCANIC; VOLCANIC ROCKS;

---, 1972, General geology, northeastern Minnesota, in Sims, P. K., and Morey, G. B., eds., Geology of Minnesota: A Centennial Volume: St. Paul, Minnesota Geological Survey, p. 292-293. DULUTH COMPLEX; GEOLOGY; LAYERED INTRUSION; MINNESOTA; NORTH SHORE VOLCANIC GROUP; UNITED-STATES; VOLCANIC ROCKS;

---, 1972, North Shore Volcanic Group, in Sims, P. K., and Morey, G. B., eds., Geology of Minnesota: A Centennial Volume: St. Paul, Minnesota Geological Survey, p. 294-332. ANORTHOSITE; BEAVER BAY COMPLEX; BREAKWATER TRACHYBASALT FLOW; BRULE RIVER BASALTS; BRULE RIVER RHYOLITE FLOW; COOK COUNTY; COPPER; CROFTVILLE BASALTS; DERONDA BAY ANDESITE FLOW; DEVIL TRACK FELSITE; DIKES; DULUTH COMPLEX; ENDION SILL; GEOCHEMISTRY; GOOD HARBOR BAY ANDESITE; GRAND MARAIS RHYOLITE FLOW; GRAND PORTAGE BASALTS; HOVLAND DIABASE COMPLEX; HOVLAND LAVAS; KIMBALL CREEK FELSITE; LAKE COUNTY; LAYERED INTRUSION; LESTER RIVER SILL; LEVEAUX PORPHYRY; LOGAN SILLS; LUTSEN BASALTS; MARR ISLAND LAVAS; MINNESOTA; NORTH SHORE VOLCANIC GROUP; NORTHLAND SILL; ORIGIN; PETROGRAPHY; PIGEON POINT SILLS; RED CLIFF BASALTS; RED ROCK RHYOLITE FLOW; RESERVATION RIVER DIABASE COMPLEX; SILLS; ST. LOUIS COUNTY; STRATIGRAPHY; STRUCTURAL-GEOLOGY; TERRACE POINT BASALT FLOW; UNITED-STATES; VENTS; VOLCANIC ROCKS; VOLCANIC VENTS; WHOLE ROCK ANALYSES;

---, 1972, Field trip guidebook for Precambrian North Shore Volcanic Group, northeastern Minnesota:, Minnesota Geological Survey, Guidebook Series No. 3, 36 p. GUIDEBOOK; MINNESOTA; NORTH SHORE VOLCANIC GROUP; UNITED-STATES; VOLCANIC ROCKS;

---, 1974, Geology of the copper-nickel deposits of Minnesota: Naturalist, v. 25, no. 2/3, p. 1-7. BABBITT; BOUNDARY WATERS CANOE AREA; BWCA; COPPER; DULUTH COMPLEX; EXPLORATION; LAKE COUNTY; MATURI; MINERAL DEPOSITS; MINERALIZATION; MINNAMAX; MINNESOTA; NICKEL; ORIGIN; PARTRIDGE RIVER INTRUSION; REGIONAL COPPER-NICKEL STUDY; ST. LOUIS COUNTY; SULFIDES; UNITED-STATES;

---, 1977, Keweenawan plateau volcanism in the Lake Superior region, in Baragar, W. R. A., Coleman, L. C., and Hall, J. M., eds., Volcanic regimes in Canada:, Geological Association of Canada, Special Paper 16, p. 407-422. CANADA; FLOOD BASALTS; MICHIGAN; MINNESOTA; NORTH SHORE VOLCANIC GROUP; ONTARIO; UNITED-STATES; VOLCANIC ROCKS; WISCONSIN;

---, 1979, Iron enrichment in experimentally crystallized olivine tholeiite and its application to the differentiation of Keweenawan magmas [abs.]: Geological Society of America Abstracts with Programs, v. 11, p. 435. DIFFERENTIATION; IRON ENRICHMENT; MINNESOTA; NORTH SHORE VOLCANIC GROUP; UNITED-STATES; VOLCANIC ROCKS;

---, 1979, Bedrock geology of the Milepost 7 area, Silver Bay, Minnesota [abs.]: 25th Annual Institute on Lake Superior Geology, Duluth, MN, v. 25, p. 17. ANORTHOSITE; BEAVER BAY COMPLEX; DULUTH COMPLEX; FAULTS; GEOLOGY; GOOSEBERRY RIVER BASALTS; INTERFLOW SEDIMENTS; LAKE COUNTY; MILEPOST 7; MINNESOTA; NORTH SHORE VOLCANIC GROUP; STRUCTURAL-GEOLOGY; THIRTY-NINE MILE CREEK; UNITED-STATES; XENOLITHS;

---, 1980, Keweenawan volcanism and the nature of Keweenaw rift tectonics [abs.]: 26th Annual Institute on Lake Superior Geology, Eau Claire, WI, v. 26, p. 35-36. CANADA; DIKES; DISTRICT OF THUNDER BAY; FAULTS; FLOOD BASALTS; MICHIGAN; NORMAL-FAULTS; ONTARIO; OSLER GROUP; PORTAGE LAKE VOLCANICS; STRUCTURAL-GEOLOGY; UNITED-STATES; UPPER-PENINSULA; VOLCANIC ROCKS; VOLCANISM;

63 ---, 1981, Pre-Tertiary plateau basalts, in Basaltic volcanism on the terrestrial planets: New York, Pergamon Press, Basaltic volcanism study project, p. 30-77. AFRICA; ARGENTINA; ASIA; BRAZILIAN CRATON; FLOOD BASALTS; GEOCHEMISTRY; JURASSIC; KAROO; MESOZOIC; MICHIGAN; MINERAL CHEMISTRY; MINNESOTA; NORIL'SK; NORTH SHORE VOLCANIC GROUP; PARAGUAY; PARANÁ BASIN; PARANÁ TRAPS; PETROGRAPHY; PHANEROZOIC; PORTAGE LAKE VOLCANICS; RUSSIA; SIBERIA; SIBERIAN TRAPS; SOUTH AFRICA; SOUTH AMERICA; TRIASSIC; UNITED-STATES; UPPER-PENINSULA; URUGUAY; VOLCANIC ROCKS; WHOLE ROCK ANALYSES;

---, 1981, Keweenawan dikes at Grand Portage, Minnesota: Geochemistry and geological setting [abs.]: Geological Society of America Abstracts with Programs, v. 13, no. 6, p. 279. COOK COUNTY; DIKES; GEOCHEMISTRY; GEOLOGY; GRAND PORTAGE; GRAND PORTAGE DIKES; MINNESOTA; UNITED-STATES;

---, 1982, Geology of Keweenawan extrusive rocks, in Wold, R. J., and Hinze, W. J., eds., Geology and tectonics of the Lake Superior basin:, Geological Society of America, Memoir 156, p. 47-55. GEOCHEMISTRY; GEOLOGY; LOGAN SILLS; MINNESOTA; NORTH SHORE VOLCANIC GROUP; QUARTZ-NORMATIVE; RARE-EARTH ELEMENTS; REE; SILLS; TRACE ELEMENT ANALYSES; UNITED-STATES; VOLCANIC ROCKS; WHOLE ROCK ANALYSES;

---, 1982, Geology of the Milepost 7 area, Lake County, Minnesota:, Minnesota Geological Survey, Report of Investigations 26, 12 p. ALTERATION; ANDESITE; ANORTHOSITE; BASALT; BASALTIC ANDESITE; BEAR LAKE; BEAR LAKE RIDGE; BEAVER BAY COMPLEX; BEAVER RIVER; DIABASE; DRILL HOLE; DULUTH COMPLEX; FAULT; FERROGABBRO; GEOCHEMISTRY; GOOSEBERRY RIVER; HORNFELS; LAKE COUNTY; LAVA-FLOWS; LAYERED INTRUSION; MAP; MILEPOST 7; MINNESOTA; NORTH SHORE VOLCANIC GROUP; OLIVINE BASALT; OLIVINE DIABASE; OPHITIC BASALT; PETROLOGY; SANDSTONE; SHEAR ZONES; SILLS; SPLIT ROCK RIVER; STRUCTURAL-GEOLOGY; UNITED-STATES; VOLCANIC BRECCIA; VOLCANIC ROCKS; WHOLE ROCK ANALYSES; ZEOLITE;

---, 1982, Geologic map of Minnesota: Two Harbors sheet: Minnesota Geological Survey, scale 1:250,000. BEAVER BAY COMPLEX; DULUTH COMPLEX; GEOLOGY; LAYERED INTRUSION; MAP; MINNESOTA; NORTH SHORE VOLCANIC GROUP; UNITED-STATES; VOLCANIC ROCKS;

---, 1983, Physical volcanology of the Keweenawan North Shore Volcanics [abs.]: 29th Annual Institute on Lake Superior Geology, Houghton, MI, v. 29, p. 18. MINNESOTA; NORTH SHORE VOLCANIC GROUP; UNITED-STATES; VOLCANIC ROCKS; VOLCANOLOGY;

---, 1983, Geologic and geochemical evidence for the nature and development of the Middle Proterozoic (Keweenawan) Midcontinent rift of North America: Tectonophysics, v. 94, p. 413-437. GEOCHEMISTRY; GEOLOGY; MINNESOTA; NORTH SHORE VOLCANIC GROUP; ORIGIN; RIFTING; UNITED-STATES; VOLCANIC ROCKS;

---, 1983, Composition, origin and evolution of Keweenawan magmas - a review [abs.]: 29th Annual Institute on Lake Superior Geology, Houghton, MI, v. 29, p. 17. ANDESITE; BASALTIC ANDESITE; BASALTS; FERROANDESITE; GEOCHEMISTRY; HAWAIITES; ICELANDITE; MANTLE; MELTING; MINNESOTA; MUGEARITE; NORTH SHORE VOLCANIC GROUP; OLIVINE THOLEIITE; ORIGIN; RHYOLITE; UNDEPLETED MANTLE; UNITED-STATES; VOLCANIC ROCKS;

---, 1986, Lithogeochemistry of Keweenawan igneous rocks: A final report to the Minnesota Department of Natural Resources:, Minnesota Department of Natural Resources, Division of Minerals, Report 241-4, 94 p. BASE METAL ANALYSES; DIKE; DULUTH COMPLEX; GEOCHEMISTRY; LAYERED INTRUSION; MAJOR ELEMENT ANALYSES; MINNESOTA; MINOR ELEMENT ANALYSES; NORTH SHORE VOLCANIC GROUP; PRECIOUS METAL ANALYSES; RARE-EARTH ELEMENTS; REE; SILLS; TRACE ELEMENT ANALYSES; UNITED-STATES; VOLCANIC ROCKS; WHOLE ROCK ANALYSES;

---, 1987, Plateau basalts of the Keweenawan North Shore Volcanic Group, in Biggs, D. L., ed., Centennial Field Guide: Boulder, CO, Geological Society of America, North-Central Section, v. 3, p. 59-62. FLOOD BASALTS; GEOLOGY; GUIDEBOOK; LAKE COUNTY; MINNESOTA; NORTH SHORE VOLCANIC GROUP; ST. LOUIS COUNTY; UNITED-STATES; VOLCANIC ROCKS;

---, 1987, The Middle Proterozoic Duluth Complex at Duluth, Minnesota, in Biggs, D. L., ed., Centennial Field Guide: Boulder, CO, Geological Society of America, North-Central Section, v. 3, p. 63-66. DULUTH; DULUTH COMPLEX; DULUTH LAYERED SERIES; GEOCHEMISTRY; GUIDEBOOK; MAJOR ELEMENT ANALYSES; MINNESOTA; ST. LOUIS COUNTY; UNITED-STATES; WHOLE ROCK ANALYSES;

---, 1989, Physical volcanology of mid-Proterozoic plateau lavas: Geological Society of America Bulletin, v. 101, p. 486-500. ANDESITE; BASALT; BASALTIC ANDESITE; BRECCIA; CANADA; COOK COUNTY; DEVIL TRACK RHYOLITE; DISTRICT OF ALGOMA; DISTRICT OF THUNDER BAY; ELY'S PEAK BASALT; FLOOD BASALTS; GEOCHEMISTRY; GEOPHYSICS; GOOD HARBOR BAY ANDESITE; GOOSEBERRY RIVER; GREENSTONE FLOW; ICELANDITE; IGNIMBRITES; INTERFLOW SEDIMENTS; ISLE ROYALE; JOINTS; KEWEENAW PENINSULA; KIMBALL CREEK RHYOLITE; LAKE COUNTY; LUCILLE ISLAND; LUTSEN BASALTS; MAFIC; MAGNETIC POLARITY; MAMAINSE POINT; MAMAINSE POINT FORMATION; MICHIGAN; MINNESOTA; NOPEMING-FORMATION; NORMAL POLARITY; NORTH SHORE VOLCANIC GROUP; ONTARIO; OSLER GROUP; PALEOMAGNETISM; PLATEAU LAVAS; POLARITY; PORTAGE LAKE VOLCANICS; REVERSE POLARITY; RHYOLITE; SANDSTONE; SCHROEDER BASALTS; ST. LOUIS COUNTY; TERRACE POINT BASALT FLOW; THICKNESS; UNITED-STATES; UPPER-PENINSULA; VOLCANIC ROCKS; VOLCANOLOGY;

---, 1992, Geologic map of the North Shore of Lake Superior, Lake and Cook Counties, Minnesota: Part 1 Little Marais to Tofte: Minnesota Geological Survey, Miscellaneous Map Series, Map M-71, scale 1:24,000. BASALT; GEOLOGY; LITTLE MARAIS; MAP; MINNESOTA; NORTH SHORE VOLCANIC GROUP; RHYOLITE; STRATIGRAPHY; TOFTE; UNITED-STATES; VOLCANIC ROCKS;

---, 1992, The Palisade rhyolite, Lake County, Minnesota: A cryptic rheoignimbrite in the North Shore volcanics [abs.]: 38th Annual Institute on Lake Superior Geology, Hurley, WI, v. 38, p. 31. FLOW BRECCIA; FLOW LAMINATION; LAKE COUNTY; MINNESOTA; NORTH SHORE

64 VOLCANIC GROUP; OUTCROP; PALISADE RHYOLITE; PETROGRAPHY; PYROCLASTIC FLOW; RHEOIGNIMBRITE; UNITED-STATES; WELDING;

---, 1993, Proterozoic Rifts, in Condie, K. C., ed., Proterozoic Crustal Evolution: Amsterdam, Elsevier, p. 97-149. ADELAIDE GEOSYNCLINE; AFRICA; ANIMIKIE; ARCHEAN; ARUNTA BLOCK; ASHBURTON TROUGH; AUSTRALIA; BACK-ARC; BALTIC SHIELD; BELT GROUP; BRAZILIAN CRATON; BRITISH COLUMBIA; CANADA; CANADIAN SHIELD; CAPE SMITH; CONGO CRATON; COPPERMINE RIVER; CRATON; DALRADIAN; DAMARA; EAST SAHARAN/CHAD CRATON; ENSIALIC; EXTENSION; FLINDERS RANGE; FLOOD BASALTS; GAWLER CRATON; GEOCHEMISTRY; GREAT DYKE; GRENVILLE; HALLS CREEK INLIER; HEMLOCK; HURONIAN; IAPETUS; IDAHO; IRELAND; KAAPVAAL CRATON; KALAHARI CRATON; KIBARAN BELT; KRESTSOVSKY; LABRADOR TROUGH; LAURENTIAN SHIELD; LAYERED INTRUSION; MACKENZIE MOUNTAINS; MARQUETTE; MICHIGAN; MINNESOTA; MONTANA; MT. ISA INLIER; MUSKOX INTRUSION; NAMIBIA; NORTHWEST TERRITORIES; ONTARIO; ORSHANO; PAN-AFRICAN; PILBARA BLOCK; PINE CREEK INLIER; PURCELL SUPERGROUP; QUEBEC; RACKLAN OROGENY; REPUBLIC; RIFTS; RIPHEAN; SAO FRANCISCO CRATON; SCOTLAND; SIBERIAN CRATON; SOUTH AFRICA; SREDNE-RUSSKY; SVECOKARELIAN; TELEMARK; UDZH; UNITED-STATES; UTAH; VOLCANIC; VOLYNO; WASHINGTON; WERNECKE SUPERGROUP; WEST AFRICAN CRATON; WILLYAMA BLOCK; WISCONSIN; WOPMAY OROGEN; YILGARN BLOCK; YUKON; ZIMBABWE;

---, 1993, Stratigraphy and volcanology of the North Shore volcanics in the Duluth quadrangle [abs.]: 39th Annual Institute on Lake Superior Geology, Eveleth, MN, v. 39, p, 33-34. 40TH AVENUE EAST ICELANDITE; 42ND AVENUE EAST RHYOLITE; BASALT; BURIAL- METAMORPHISM; CITY HALL ICELANDITE; CONTACT METAMORPHISM; DIABASE; DULUTH COMPLEX; DULUTH QUADRANGLE; ENDION SILL; GREENSCHIST-FACIES; HARTLEY OPHITIC BASALT; HORNBLENDE HORNFELS FACIES; ICELANDITE; KENWOOD AVENUE PORPHYRITIC BASALTS; LAYERED INTRUSION; LESTER RIVER SILL; METAMORPHISM; MINNESOTA; NETTLETON PORPHYRITIC BASALT; NORTH SHORE VOLCANIC GROUP; NORTHLAND SILL; PREHNITE-PUMPELLYITE FACIES; PUMICE; PYROXENE HORNFELS; PYROXENE HORNFELS FACIES; RHEOIGNIMBRITE; RHYOLITE; SILLS; ST. MICHAEL'S SILL; STRATIGRAPHY; UNITED-STATES; VOLCANOLOGY; WELDED;

---, 1995, Geology of the North Shore state parks [abs.]: 41st Annual Institute on Lake Superior Geology, Marathon, ONT, v. 41, p. 21. ANORTHOSITE; BASALT; ; CASCADE RIVER; CASCADE RIVER STATE PARK; CENOZOIC; DIABASE; DIKES; DULUTH COMPLEX; GLACIAL GEOLOGY; GOOSEBERRY FALLS; GOOSEBERRY FALLS STATE PARK; ; ; JUDGE MAGNEY STATE PARK; LOWER-PROTEROZOIC; MINNESOTA; NORTH SHORE VOLCANIC GROUP; PALISADE RHYOLITE; PLEISTOCENE; QUATERNARY; RHYOLITE; SANDSTONE; SAWTOOTH RANGE; SPLIT ROCK LIGHTHOUSE STATE PARK; TEMPERANCE RIVER; TEMPERANCE RIVER STATE PARK; TETTEGOUCHE STATE PARK; UNITED- STATES; VOLCANIC ROCKS;

---, 1995, Volcanic rocks of the Midcontinent Rift System: A review [abs.], in Ojakangas, R. W., Dickas, A. B., and Green, J. C., eds., Basement Tectonics 10: Proceedings of the Tenth International Conference on Basement Tectonics: Netherlands, Kluwer Academic Publishers, v. 4, p. 65-67. AGE; FLOOD BASALTS; GEOPHYSICS; GLIMPCE; MICHIGAN; MINNESOTA; SEISMIC; UNITED-STATES; UPPER-PENINSULA; VOLCANIC ROCKS;

Green, J. C., and Books, K. G., 1972, Paleomagnetic evidence for the extent of Lower Keweenawan lavas in Minnesota [abs.]: 18th Annual Institute on Lake Superior Geology, Houghton, MI, v. 18, Paper 8, 3 p. BASALT; CANADA; COOK COUNTY; CORRELATION; DISTRICT OF THUNDER BAY; DULUTH COMPLEX; ELY'S PEAK BASALT; GEOPHYSICS; GRAND PORTAGE; GRAND PORTAGE DIKES; GRAND PORTAGE LAVAS; HOVLAND; HOVLAND LAVAS; LUCILLE ISLAND; MAFIC; MAGNET ISLAND; MICHIGAN; MINNESOTA; NOPEMING-FORMATION; NORMAL POLARITY; NORTH SHORE VOLCANIC GROUP; ONTARIO; OSLER GROUP; PALEOMAGNETISM; PUCKWUNGE FORMATION; REVERSE POLARITY; SIBLEY GROUP; ST. LOUIS COUNTY; UNCONFORMITY; UNITED-STATES; UPPER- PENINSULA; WISCONSIN;

Green, J. C., Bornhorst, T. J., Chandler, V. W., Mudrey, M. G., Jr., Myers, P. E., Pesonen, L. J., and Wilband, J. T., 1987, Keweenawan dykes of the Lake Superior region: Evidence for evolution of the Middle Proterozoic Midcontinent Rift of North America, in Halls, H. C., and Fahrig, W. F., eds., Mafic dyke swarms:, Geological Association of Canada, Special Paper 34, p. 289-302. DIKE; EVOLUTION; LAKE SUPERIOR; MAFIC; ORIGIN; PLATE TECTONICS; RIFTING;

---, 1988, Evidence for evolution of the middle Proterozoic Midcontinent rift of North America, in Halls, H. C., and Fahrig, W. F., eds., Mafic dyke swarms:, Geological Association of Canada, Special Paper 34, p. 289-302. BARAGA COUNTY; BARAGA DIKES; BASE METAL ANALYSES; CANADA; CARLTON COUNTY; CARLTON COUNTY DIKES; COOK COUNTY; DISTRICT OF ALGOMA; DISTRICT OF THUNDER BAY; GEOCHEMISTRY; GEOPHYSICS; GRAND PORTAGE DIKES; KEWEENAW PENINSULA; MARQUETTE COUNTY; MARQUETTE DIKES; MICHIGAN; MINNESOTA; NORMAL POLARITY; OLIVINE THOLEIITE; ONTARIO; PALEOMAGNETISM; PIGEON RIVER; PUKASKWA DIKES; RARE-EARTH ELEMENTS; REE; REVERSE POLARITY; ST. LOUIS COUNTY; TRACE ELEMENT ANALYSES; UNITED-STATES; WHOLE ROCK ANALYSES; WISCONSIN;

Green, J. C., and Chandler, V. W., 1985, Diabase dikes of the Midcontinent Rift in Minnesota: A record of Keweenawan magmatism and tectonic development [abs.]: Geological Society of America Abstracts with Programs, v. 17, p. 597. DIABASE; DIKE; MAGMATISM; MINNESOTA; PLATE TECTONICS; TECTONICS; UNITED-STATES;

---, 1985, Keweenawan dikes of Minnesota [abs.]: 31st Annual Institute on Lake Superior Geology, Kenora, ONT, v. 31, p. 31-32. ANIMIKIE; ANIMIKIE BASIN; CARLTON COUNTY; COOK COUNTY; DIKE-SWARMS; DIKES; DULUTH COMPLEX; GEOPHYSICS; INTRUSIONS; LAYERED INTRUSION; LOWER-PROTEROZOIC; MINNESOTA; PALEOMAGNETISM; PETROLOGY; PUCKWUNGE-SANDSTONE; ROVE FORMATION; SEDIMENTARY-ROCKS; SEDIMENTS; THOMSON FORMATION; UNITED-STATES;

Green, J. C., and Fitz III, T. J., 1993, Extensive felsic lavas and rheoignimbrites in the Keweenawan Midcontinent Rift plateau volcanics, Minnesota: Petrographic and field recognition: Journal of Volcanology and Geothermal Research, v. 54, p. 177-196. FELSIC; GEOCHEMISTRY; LAKE

65 COUNTY; MAFIC; MANTLE; MINNESOTA; NORTH SHORE VOLCANIC GROUP; PETROLOGY; RHEOIGNIMBRITE; UNITED-STATES; VOLCANIC; VOLCANIC ROCKS;

Green, J. C., and Morton, P. M., 1987, Comment on "Reequilibration of olivine with trapped liquid in the Duluth Complex: Geology, v. 11, p. 1079. DRILL HOLE; B1-221; BABBITT; DULUTH COMPLEX; IGNEOUS-PROCESSES; LAYERED INTRUSION; MINERAL CHEMISTRY; MINERAL DEPOSIT; MINNAMAX; MINNESOTA; ORIGIN; PARTRIDGE RIVER INTRUSION; ST. LOUIS COUNTY; TIGER BOY; UNITED- STATES;

Green, J. C., Phinney, W. C., and Weiblen, P. W., 1966, Geologic map of Gabbro Lake quadrangle, Lake County: Minnesota Geological Survey, Miscellaneous Map Series, Map M-2, scale 1:31,680. DULUTH COMPLEX; GABBRO LAKE; GABBRO LAKE QUADRANGLE; LAKE COUNTY; LAYERED INTRUSION; MINNESOTA; UNITED-STATES;

Greenberg, J. K., 1983, Relative age and tectonic significance of Proterozoic metasedimentary rocks in the Upper Midwest [abs.]: 29th Annual Institute on Lake Superior Geology, Houghton, MI, v. 29, p. 19-20. BARABOO INTERVAL; BARABOO-QUARTZITE; BARAGA GROUP; BARRON-QUARTZITE; CALC-ALKALINE; IRON-FORMATION; ISLAND ARC; LOWER-PROTEROZOIC; MARQUETTE RANGE SUPERGROUP; METASEDIMENTARY-ROCKS; MICHIGAN; MILLE LACS GROUP; MINNESOTA; PAINT RIVER GROUP; PENOKEAN OROGENY; QUARTZITE; RIFT BASIN; SEDIMENTARY-ROCKS; SIOUX-QUARTZITE; SUPERIOR CRATON; SUPERIOR PROVINCE; TECTONICS; THOLEIITIC; TURBIDITE; UNITED-STATES; UPPER-PENINSULA; VOLCANIC ROCKS; WISCONSIN;

Griffin, J. B., 1961, Lake Superior copper and the Indians; miscellaneous studies of the Great Lakes prehistory:, University of Michigan, Museum of Anthropology, Anthropological Papers no. 17, 189 p. COPPER; HISTORY; LAKE SUPERIOR; MICHIGAN; MICHIGAN COPPER DISTRICT; NATIVE AMERICANS; NATIVE COPPER; UNITED-STATES; UPPER-PENINSULA;

Grimes, J. G., 1976, Application of a flow direction technique to the Portage Lake Volcanics, Michigan [abs.]: 22nd Annual Institute on Lake Superior Geology, St. Paul, MN, v. 22, p. 25. HOUGHTON-COUNTY; MICHIGAN; PORTAGE LAKE VOLCANICS; SCALES CREEK FLOW; UNITED- STATES; UPPER-PENINSULA; VOLCANIC ROCKS;

---, 1977, Geochemistry and petrology of Keweenaw rhyolites, Keweenaw Peninsula [M.S. Thesis]: Michigan Technological University, Houghton, 80 p. FELSIC; GEOCHEMISTRY; KEWEENAW PENINSULA; MICHIGAN; PETROLOGY; RHYOLITE; UNITED-STATES; UPPER- PENINSULA; VOLCANIC ROCKS;

Grogan, R. M., 1940, Geology of a part of the Minnesota shore of Lake Superior northeast of Two Harbors, Minnesota [Ph.D. Dissertation]: University of Minnesota, Minneapolis, 145 p. BEAVER BAY; BEAVER BAY COMPLEX; DULUTH COMPLEX; GEOLOGY; LAYERED INTRUSION; MINNESOTA; NORTH SHORE VOLCANIC GROUP; TWO HARBORS; UNITED-STATES; VOLCANIC ROCKS;

Grosh, W. A., Pennington, J. W., Wasson, P. A., and Cooke, S. R. B., 1955, Investigation of copper-nickel mineralization in Kawishiwi River area, Lake County, Minnesota:, U. S. Bureau of Mines, Report of Investigations 5177, 18 p. COPPER; DULUTH COMPLEX; KAWISHIWI RIVER; LAKE COUNTY; LAYERED INTRUSION; MINERALIZATION; MINNESOTA; NICKEL; SOUTH KAWISHIWI INTRUSION; UNITED- STATES;

Grout, F. F., 1910, Contribution to the petrography of the Keweenawan: Journal of Geology, v. 18, no. 7, p. 633-657. CHENGWATANA VOLCANIC GROUP; PETROGRAPHY; VOLCANIC ROCKS;

---, 1910, Keweenawan copper deposits: Economic Geology, v. 5, no. 5, p. 471-476. COPPER; DATOLITE; EXPLORATION; KETTLE RIVER; LAUMONTITE; MINERAL DEPOSITS; MINING; MINNESOTA; PREHNITE; PROSPECTING; SHAFT; SNAKE RIVER; UNITED-STATES; VEINS; ZEOLITE;

---, 1913, Contact metamorphism of the of Minnesota by granite and gabbro magmas: Geological Society of America Bulletin, v. 44, p. 889- 1040. ANIMIKIE; ANIMIKIE GROUP; CONTACT METAMORPHISM; DULUTH COMPLEX; LAYERED INTRUSION; LOWER- PROTEROZOIC; MINNESOTA; ROVE FORMATION; SEDIMENTARY-ROCKS; UNITED-STATES; VIRGINIA FORMATION;

---, 1917, The Duluth Gabbro and its associated formations [Ph.D. Dissertation]: Yale University, New Haven, Connecticut, 152 p. COOK COUNTY; DULUTH COMPLEX; GEOLOGY; LAKE COUNTY; LAYERED INTRUSION; MINNESOTA; ST. LOUIS COUNTY; UNITED- STATES;

---, 1918, Two-phase convection in igneous magmas: Journal of Geology, v. 26, p. 481-499. DULUTH COMPLEX; LAYERED INTRUSION; MINNESOTA; UNITED-STATES;

---, 1918, A type of igneous differentiation: Journal of Geology, v. 26, p. 626-658. ANORTHOSITE; COOK COUNTY; DIABASE; DIFFERENTIATION; DULUTH; DULUTH COMPLEX; GEOCHEMISTRY; GRANOPHYRE; IGNEOUS-PROCESSES; LAYERED INTRUSION; MAGNETITE; MINNESOTA; PERIDOTITE; ST. LOUIS COUNTY; TITANIFEROUS MAGNETITE; TROCTOLITE; UNITED-STATES; WHOLE ROCK ANALYSES;

---, 1918, Internal structures of igneous rocks; their significance and origin; with special reference to the Duluth Gabbro: Journal of Geology, v. 26, p. 439-458. DULUTH COMPLEX; IGNEOUS-PROCESSES; LAYERED INTRUSION; MINNESOTA; UNITED-STATES;

---, 1918, The lopolith, an igneous form exemplified by the Duluth gabbro: American Journal of Science, v. 46, p. 516-522. DULUTH COMPLEX; IGNEOUS-PROCESSES; LAYERED INTRUSION; MINNESOTA; UNITED-STATES;

66 ---, 1918, The pegmatites of the Duluth gabbro: Economic Geology, v. 13, p. 185-197. DULUTH COMPLEX; IGNEOUS-PROCESSES; LAYERED INTRUSION; MINNESOTA; PEGMATITE; UNITED-STATES;

---, 1928, Anorthosite and granite as differentiates of a diabase sill on Pigeon Point, Minnesota: Geological Society of America Bulletin, v. 39, p. 555- 578. ADIRONDACK MOUNTAINS; ANORTHOSITE; BEAVER BAY; BEAVER BAY COMPLEX; COOK COUNTY; DIABASE; DIFFERENTIATION; DULUTH COMPLEX; GEOCHEMISTRY; GRANITE; IGNEOUS PROCESS; LAKE COUNTY; LAYERED INTRUSION; MINNESOTA; NEW YORK; PIGEON POINT; SILLS; UNITED-STATES; WHOLE ROCK ANALYSES;

---, 1933, Contact metamorphism of the slates of Minnesota by granite and gabbro magmas: Geological Society of America Bulletin, v. 44, p. 989- 1040. ANIMIKIE; CONTACT METAMORPHISM; DULUTH COMPLEX; GRANITE; LAYERED INTRUSION; MINNESOTA; UNITED- STATES;

---, 1933, Duluth rocks and structure. 16th International Geological Congress, Washington, 1933, Guidebook 27, Excursion C-4, p. 67-72 DULUTH COMPLEX; GUIDEBOOK; LAYERED INTRUSION; MINNESOTA; UNITED-STATES;

---, 1937, Criteria of origin of inclusions in plutonic rocks: Geological Society of America Bulletin, v. 48, p. 1521-1572. DULUTH COMPLEX; IGNEOUS PROCESS; LAYERED INTRUSION; MINNESOTA; UNITED-STATES; XENOLITHS;

---, 1950, The titaniferous magnetites of Minnesota: St. Paul, Office of the Commissioner of the Iron Range Resources and Rehabilitation Board, 117 p. ANIMIKIE; ANIMIKIE GROUP; ARCHEAN; COOK COUNTY; DULUTH COMPLEX; GENESIS; GUNFLINT IRON-FORMATION; IRON ORE; IRON-FORMATION; LAKE COUNTY; LAYERED INTRUSION; LOWER-PROTEROZOIC; MINNESOTA; ORE-DEPOSITS; ORIGIN; ROVE FORMATION; TI; TITANIUM; TITANOMAGNETITE; UNITED-STATES;

Grout, F. F., Gruner, J. W., Schwartz, G. M., and Thiel, G. A., 1951, Precambrian stratigraphy of Minnesota: Geological Society of America Bulletin, v. 62, p. 1017-1078. ANIMIKIE; ANIMIKIE BASIN; ANIMIKIE GROUP; ARCHEAN; BIWABIK IRON-FORMATION; CARLTON COUNTY; COOK COUNTY; DIABASE; DULUTH COMPLEX; FOND DU LAC FORMATION; GREENSTONE BELTS; HINCKLEY-SANDSTONE; INTERFLOW SEDIMENTS; IRON-FORMATION; KNIFE LAKE GROUP; LAKE COUNTY; LAYERED INTRUSION; LOWER-PROTEROZOIC; MINNESOTA; NORTH SHORE VOLCANIC GROUP; NORTHERN LIGHT LAKE; PINE-COUNTY; POKEGAMA QUARTZITE; PUCKWUNGE FORMATION; RAINY LAKE; SAGANAGA; SAGANAGA LAKE; SEDIMENTARY-ROCKS; SIOUX FORMATION; SIOUX-QUARTZITE; SOUDAN IRON-FORMATION; ST. LOUIS COUNTY; STRUCTURAL-GEOLOGY; THOMSON FORMATION; UNITED-STATES; VERMILION DISTRICT; VIRGINIA FORMATION; VOLCANIC ROCKS;

Grout, F. F., and Longley, W. W., 1935, Relations of anorthosite to granite: Journal of Geology, v. 43, p. 133-141. ANORTHOSITE; DIFFERENTIATION; DULUTH COMPLEX; GRANITE; IGNEOUS PROCESS; LAYERED INTRUSION; MINNESOTA; UNITED-STATES;

Grout, F. F., and Schwartz, G. M., 1933, The geology of the Rove Formation and associated intrusives of northeastern Minnesota:, Minnesota Geological Survey, Bulletin 24, 103 p. ANIMIKIE; DULUTH COMPLEX; FRACTURES; GEOLOGY; LAYERED INTRUSION; LOGAN SILLS; LOWER-PROTEROZOIC; MINERALIZATION; MINNESOTA; ROVE FORMATION; SILVER; STRUCTURAL-GEOLOGY; UNITED-STATES; VEINS;

---, 1939, The geology of the anorthosites of the Minnesota coast of Lake Superior:, Minnesota Geological Survey, Bulletin 28, 119 p. ANORTHOSITE; CLASTIC; CLASTIC DIKE; CREVICE; DULUTH COMPLEX; LAKE COUNTY; LAYERED INTRUSION; MINNESOTA; SEDIMENTARY-ROCKS; UNITED-STATES;

Grout, F. F., Sharp, R. P., and Schwartz, G. M., 1959, The geology of Cook County, Minnesota:, Minnesota Geological Survey, Bulletin 39, 163 p. ANIMIKIE; COOK COUNTY; DULUTH COMPLEX; GEOLOGY; LAYERED INTRUSION; LOGAN SILLS; LOWER-PROTEROZOIC; MINNESOTA; ROVE FORMATION; SILLS; UNITED-STATES;

Gruner, J. W., 1941, Structural geology of the Knife Lake area of northeastern Minnesota: Geological Society of America Bulletin, v. 52, p. 1577- 1642. ANIMIKIE; ARCHEAN; DIABASE; DIKES; DULUTH COMPLEX; GREENSTONE BELTS; GREENSTONES; GUNFLINT IRON- FORMATION; IRON-FORMATION; KNIFE LAKE; KNIFE LAKE GROUP; LAKE COUNTY; LAYERED INTRUSION; LOWER- PROTEROZOIC; MINNESOTA; ROVE FORMATION; SAGANAGA; SEDIMENTS; SOUDAN IRON-FORMATION; ST. LOUIS COUNTY; STRUCTURAL-GEOLOGY; UNITED-STATES; VERMILION DISTRICT;

Gundersen, J. N., 1958, The mineralogy of the metamorphosed Biwabik Iron Formation, eastern Mesabi Range, Minnesota [abs.]: 4th Annual Institute on Lake Superior Geology, Duluth, MN, v. 4, p. 19. AMPHIBOLE; BIWABIK IRON-FORMATION; CALC-SILICATES; CONTACT METAMORPHISM; DULUTH COMPLEX; GARNET; HORNFELS; IRON-FORMATION; LOWER-PROTEROZOIC; MAGNETITE; MESABI RANGE; METAMORPHISM; METASOMATISM; MICA; MINERALOGY; MINNESOTA; MOLYBDENITE; MOLYBDENUM; OLIVINE; OPX; ORTHOPYROXENE; OXIDES; PEGMATITE; PLAGIOCLASE; STRATIGRAPHY; TACONITE; UNITED-STATES; UPPER CHERTY; UPPER SLATY; VEINS;

Gupta, V. K., 1991, Bouguer gravity of Ontario, east-central sheet: Ontario Geological Survey, Map 2594, scale 1:1,000,000. BATCHAWANA BAY; BOUGUER-ANOMALIES; CANADA; DISTRICT OF ALGOMA; GEOPHYSICS; GRAVITY; MAMAINSE POINT; MAMAINSE POINT FORMATION; MAP; ONTARIO; VOLCANIC ROCKS;

Gustafson, T., 1961, Report on the Port Monroe columbium occurrence: Resident Geologist's files, District of Thunder Bay, Thunder Bay. ALKALIC COMPLEX; ALKALINE; ALKALINE INTRUSION; CANADA; COLDWELL COMPLEX; COLUMBIUM; DISTRICT OF THUNDER BAY; ONTARIO; PORT COLDWELL; PORT MONROE; RARE-EARTH ELEMENTS; REE;

67 Gustavson, J. B., 1983, Basement rift control on oil production in eastern Kansas [abs.]: American Association of Petroleum Geologists Bulletin, v. 67, p. 1324-1325. AEROMAGNETICS; BASEMENT; EXPLORATION; FAULTS; FOREST CITY BASIN; GEOPHYSICS; GRABENS; GRAVITY; HORSTS; KANSAS; LANDSAT; NEMAHA RIDGE; OIL; PRODUCTION; SALINA-BASIN; STRUCTURAL-GEOLOGY; UNITED- STATES;

Haas, L. A., Schluter, R. B., and Mahan, W. M., 1979, Autoclave leaching of copper-nickel matte produced from Duluth Complex:, U. S. Bureau of Mines, Report of Investigations 8340, 14 p. AUTOCLAVE; COPPER; DULUTH COMPLEX; EXPERIMENTAL STUDIES; GOLD; LAYERED INTRUSION; LEACHING; MATTE; MINERAL PROCESSING; MINNESOTA; NICKEL; PLATINUM-GROUP ELEMENTS; PRECIOUS METALS; PRESSURE; SILVER; TEMPERATURE; UNITED-STATES;

Haas, L. A., Schluter, R. B., and Nafziger, R. H., 1981, Low-pressure leaching of Duluth Complex matte:, U. S. Bureau of Mines, Report of Investigations 8522, 12 p. DULUTH COMPLEX; LAYERED INTRUSION; LEACHING; MATTE; MINERAL PROCESSING; MINNESOTA; PRESSURE; TEMPERATURE; UNITED-STATES;

Haas, L. R., Schluter, R. B., and Mahan, W. M., 1977, Leaching Duluth Complex concentrates, mattes, and roasted mattes with H2SO4: Engineering and Mining Journal, v. 178, no. 4, p. 80-82. CONCENTRATE; DULUTH COMPLEX; LAYERED INTRUSION; LEACHING; MATTE; MINERAL PROCESSING; MINNESOTA; ROASTING; UNITED-STATES;

Hahnenberg, J. J., 1978, Petrology and geochemistry of Keweenawan diabase dikes Ontonagon, Gogebic, Iron and Dickinson Counties, Michigan [abs.]: 25th Annual Institute on Lake Superior Geology, Duluth, MN, v. 25, p. 20. DIABASE; DICKINSON COUNTY; DIKES; GEOCHEMISTRY; GOGEBIC-COUNTY; IRON-COUNTY; MAJOR ELEMENT ANALYSES; MICHIGAN; MINOR ELEMENT ANALYSES; ONTONAGON-COUNTY; PETROLOGY; POWDER MILL GROUP; TRACE ELEMENT ANALYSES; UNITED-STATES; UPPER-PENINSULA;

Haig, T. D., 1986, A new paleomagnetic pole position for the interbedded lava flows within the Copper Harbor Conglomerate of Michigan's Keweenaw Peninsula [M.S. Thesis]: Michigan Technological University, Houghton, 46 p. COPPER HARBOR CONGLOMERATE; GEOPHYSICS; KEWEENAW COUNTY; KEWEENAW PENINSULA; LAKE SHORE TRAPS; LAVA-FLOWS; MICHIGAN; ORONTO-GROUP; PALEOMAGNETISM; POLE-POSITIONS; SEDIMENTARY-ROCKS; SEDIMENTS; STRATIGRAPHY; UNITED-STATES; UPPER- PENINSULA;

Haig, T. D., Diehl, J. F., and Paces, J. B., 1985, A new paleomagnetic pole position for the interbedded lava flows within the Copper Harbor Conglomerate of Michigan's Keweenaw Peninsula [abs.]: Eos (American Geophysical Union Transactions), v. 66, p. 866. COPPER HARBOR CONGLOMERATE; GEOPHYSICS; KEWEENAW PENINSULA; LAVA-FLOWS; MICHIGAN; ORONTO-GROUP; PALEOMAGNETISM; POLE-POSITIONS; PORTAGE LAKE VOLCANICS; SEDIMENTARY-ROCKS; SEDIMENTS; STRATIGRAPHY; UNITED-STATES; UPPER- PENINSULA;

Haimson, B. C., 1978, Crustal stress in the Michigan Basin: Journal of Geophysical Research, v. 83, no. B12, p. 5857-5863. CRUST; FORMATION; DEVONIAN; GRATIOT-COUNTY; HYDROFRACTURING; JACOBSVILLE-SANDSTONE; LOWER PENINSULA; MICHIGAN; MICHIGAN-BASIN; MT. SIMON SANDSTONE; ORDOVICIAN; PALEOZOIC; PHANEROZOIC; PRAIRIE DU CHIEN FORMATION; RED-BEDS; SANDSTONE; STRESS; STRUCTURAL-GEOLOGY; UNITED-STATES;

Hajnal, Z., and Wei, K. C., 1989, Signal enhancement of the GLIMPCE multichannel refraction data [abs.]: Eos (American Geophysical Union Transactions), v. 70, no. 15, p. 273. CANADA; GEOPHYSICS; GLIMPCE; LAKE SUPERIOR; ONTARIO; PROCESSING; REFRACTION; SEISMIC; SEISMIC-SURVEYS; UNITED-STATES;

Hak, J., Tupper, W. M., and Heslop, J. B., 1977, The mineralogy of the Coppercorp deposit, Mamainse Point, Ontario: Acta Univ. Carolinae-Gologica, v., p. 267-283. CANADA; COPPER; COPPERCORP DEPOSIT; DISTRICT OF ALGOMA; MAMAINSE POINT; MINERALOGY; ONTARIO; ORE DEPOSIT; PROTEROZOIC;

Hall, C. R., 1985, Precambrian phosphorites of northern Michigan; mode and environment of deposition [M.S. Thesis]: Michigan Technological University, Houghton BARAGA COUNTY; BARAGA-COMPLEX; CHOCOLAY-GROUP; ECONOMIC GEOLOGY; ENVIRONMENT; GEOPHYSICAL-SURVEYS; GEOPHYSICS; JACOBSVILLE-SANDSTONE; LOWER-PROTEROZOIC; MARQUETTE RANGE SUPERGROUP; MENOMINEE-GROUP; MICHIGAN; MODELS; PHOSPHATE-DEPOSITS; PHOSPHORITES; RADIOACTIVITY-SURVEYS; SANDSTONE; SEDIMENTARY-ROCKS; SEDIMENTATION; SEDIMENTS; STRATIGRAPHY; UNITED-STATES;

Hall, C. W., 1889, A brief history of copper mining in Minnesota: Minnesota Academy of Natural Science Bulletin, v. 3. Paper Q, 7 p. COPPER; ECONOMIC GEOLOGY; MINING; MINNESOTA; UNITED-STATES;

---, 1901, Keweenawan area of eastern Minnesota: Geological Society of America Bulletin, v. 12, p. 313-342. BURNETT COUNTY; CAMBRIAN; CARLTON COUNTY; CHENGWATANA VOLCANIC GROUP; CHISAGO-COUNTY; DOUGLAS-COUNTY; FAULT; KETTLE RIVER; MINNESOTA; PALEOZOIC; PETROGRAPHY; PHANEROZOIC; PINE-COUNTY; POLK-COUNTY; SANDSTONE; SNAKE RIVER; ST. CROIX COUNTY; ST. CROIX RIVER; STRUCTURAL-GEOLOGY; TAYLOR'S FALLS; UNITED-STATES; VOLCANIC ROCKS; WISCONSIN;

---, 1901, Keewatin area of eastern and central Minnesota: Geological Society of America Bulletin, v. 12, p. 343-376. AITKIN COUNTY; ANIMIKIE; ANIMIKIE BASIN; ANIMIKIE GROUP; BENTON COUNTY; BLACKHOOF RIVER; CARLTON COUNTY; DIABASE; DIKES; DULUTH; DULUTH COMPLEX; GEOLOGY; GRANITE; KANABEC COUNTY; KETTLE RIVER; LAYERED INTRUSION; LOWER- PROTEROZOIC; METAMORPHISM; MILLE LACS; MINNESOTA; MOOSE LAKE; MORRISON COUNTY; NORTH SHORE VOLCANIC GROUP; RUM RIVER; SHERBURNE COUNTY; SNAKE RIVER; ST. LOUIS COUNTY; ST. LOUIS RIVER; STEARNS COUNTY; STRUCTURAL-GEOLOGY; THOMSON FORMATION; UNITED-STATES; VOLCANIC ROCKS;

68 Hall, C. W., Meinzer, O. E., and Fuller, M. L., 1911, Geology and underground waters of southern Minnesota:, U. S. Geological Survey, Water-Supply Paper 256, 376 p. CENOZOIC; CLASTICS; GEOLOGY; GLACIAL GEOLOGY; GROUNDWATER; HYDROLOGY; MINNESOTA; PALEOZOIC; PHANEROZOIC; PLEISTOCENE; RED CLASTICS; SEDIMENTARY-ROCKS; UNITED-STATES; WATER;

Hall, H. T., and Weiblen, P. W., 1967, Ore minerals of the Duluth Gabbro Complex [abs.]: Economic Geology, v. 62, p. 870. ALTERATION; BIOTITE; CHALCOPYRITE; CHROMIFEROUS MAGNETITE; COPPER; CUBANITE; DULUTH COMPLEX; ILMENITE; INCO; LAKE COUNTY; LAYERED INTRUSION; MAGNETITE; MINERAL CHEMISTRY; MINERAL DEPOSIT; MINERALIZATION; MINERALOGY; MINNESOTA; NATIVE COPPER; NICKEL; PENTLANDITE; PYRRHOTITE; SERPENTINE; SOUTH KAWISHIWI INTRUSION; SPRUCE ROAD; SULFIDES; UNITED-STATES;

---, 1967, Ore minerals of the Duluth Gabbro Complex [abs.]: Geological Society of America Abstracts with Programs, v., p. 89-90. COPPER; DULUTH COMPLEX; LAYERED INTRUSION; MINERALOGY; MINNESOTA; NICKEL; PETROGRAPHY; UNITED-STATES;

---, 1968, Ore minerals of the Duluth Gabbro complex [abs.], in: Geological Society of America, Special Paper 115, p. 89-90. DULUTH COMPLEX; LAYERED INTRUSION; MINERALIZATION; MINNESOTA; SULFIDES; UNITED-STATES;

Halls, H. C., 1966, A review of the Keweenawan geology of Lake Superior, in: American Geophysical Union, Geophysical Monograph 10, p. 3-27. BASALTS; CANADA; DISTRICT OF ALGOMA; DISTRICT OF THUNDER BAY; DULUTH COMPLEX; GEOLOGY; GEOPHYSICS; ISLE ROYALE; JACOBSVILLE-SANDSTONE; LAYERED INTRUSION; LOGAN SILLS; MELLEN COMPLEX; MICHIGAN; MICHIPICOTEN ISLAND; MINNESOTA; ONTARIO; OSLER GROUP; PORTAGE LAKE VOLCANICS; SANDSTONE; SEDIMENTARY-ROCKS; SEDIMENTS; SIBLEY GROUP; UNITED-STATES; UPPER-PENINSULA; VOLCANIC ROCKS; WISCONSIN;

---, 1969, Compressional wave velocities of Keweenawan rock specimens from the Lake Superior region: Canadian Journal of Earth Sciences, v. 5, p. 555-568. AMYGDALOID; BAYFIELD-COUNTY; BAYFIELD-GROUP; CANADA; CARIBOU ISLAND; CHENGWATANA VOLCANIC GROUP; CLASTICS; COMPRESSIONAL WAVE; COPPER HARBOR CONGLOMERATE; DENSITY; DIABASE; DISTRICT OF ALGOMA; DISTRICT OF THUNDER BAY; DOUGLAS-COUNTY; FOND DU LAC FORMATION; FREDA-SANDSTONE; GABBRO; GEOPHYSICS; HINCKLEY-SANDSTONE; ISLE ROYALE; JACOBSVILLE-SANDSTONE; KEWEENAW COUNTY; METAMORPHISM; MICHIGAN; MINNESOTA; MONTREAL-RIVER; ONTARIO; ORONTO-GROUP; OSLER GROUP; POROSITY; PORTAGE LAKE VOLCANICS; REFRACTION; SANDSTONE; SEDIMENTS; SEISMIC; SOUTH RANGE; TAYLOR'S FALLS; UNITED-STATES; UPPER-PENINSULA; VELOCITY; VOLCANIC ROCKS; WISCONSIN;

---, 1972, Magnetic studies in northern Lake Superior: Canadian Journal of Earth Sciences, v. 9, p. 1349-1367. CANADA; GEOPHYSICS; MAGNETICS; ONTARIO; PROTEROZOIC;

---, 1972, Geophysical studies in northern Lake Superior [abs.]: Geological Society of America Abstracts with Programs, v. 4, p. 525. CANADA; DISTRICT OF THUNDER BAY; GEOPHYSICAL-SURVEYS; GEOPHYSICS; ONTARIO; PROTEROZOIC;

---, 1974, A paleomagnetic reversal in the Osler volcanic group, northern Lake Superior: Canadian Journal of Earth Sciences, v. 11, p. 1200-1207. CANADA; DISTRICT OF THUNDER BAY; GEOPHYSICS; ONTARIO; OSLER GROUP; PALEOMAGNETISM; REVERSALS; VOLCANIC ROCKS;

---, 1974, A Keweenawan volcanic sequence from the Slate Islands, northern Lake Superior [abs.]: 20th Annual Institute on Lake Superior Geology, Sault Ste. Marie, ONT, v. 20, p. 14. ARCHEAN; BASALT; CANADA; DIABASE; DIKES; DISTRICT OF THUNDER BAY; GEOPHYSICS; METASEDIMENTARY-ROCKS; METASEDIMENTS; ONTARIO; OSLER GROUP; PALEOMAGNETISM; SEDIMENTARY-ROCKS; SLATE ISLANDS; UNCONFORMITY; VOLCANIC ROCKS;

---, 1975, Shock-induced remanent magnetisation in late Precambrian rocks from Lake Superior: Nature, v. 255, no. 5511, p. 692-695. CANADA; DISTRICT OF THUNDER BAY; GEOPHYSICS; IMPACT; LAKE SUPERIOR; ONTARIO; PALEOMAGNETISM; REMANENT- MAGNETIZATION; SLATE ISLANDS;

---, 1978, The late Precambrian central North American rift system--a survey of recent geological and geophysical investigations, in Ramberg, I. B., and Neumann, E. R., eds., Tectonics and geophysics of continental rifts: Dordrecht, Holland, D. Reidel, NATO Advanced Study Institute, v. 2, p. 111-123. AEROMAGNETICS; BURIAL-METAMORPHISM; CANADA; CLASTICS; CRUST; DULUTH COMPLEX; GEOLOGY; GEOPHYSICS; GRAVITY; GREENSCHIST-FACIES; GRENVILLE; GRENVILLE OROGENY; HORSTS; IOWA; KANSAS; LAYERED INTRUSION; MAGNETICS; MANTLE; MAP; METAMORPHISM; MICHIGAN; MINNESOTA; NEBRASKA; NORMAL POLARITY; ONTARIO; ORIGIN; PALEOMAGNETISM; PLATE TECTONICS; PLUME; REGIONAL; REVERSE POLARITY; RIFTING; SEDIMENTARY- ROCKS; SEDIMENTS; STRATIGRAPHY; STRUCTURAL-GEOLOGY; UNITED-STATES; VOLCANISM; WISCONSIN; ZEOLITE-FACIES;

---, 1978, The use of converging remagnetization circles in palaeomagnetism: Physics of the Earth and Planetary Interiors, v. 16, no. 1, p. 1-11. Reliability of palaeomagnetic results; criteria, methods and error estimation ; third European Geophysical Society meeting, Amsterdam, Sept. 8-10, 1976 CANADA; COPPER HARBOR CONGLOMERATE; GEOPHYSICS; INTERPRETATION; KEWEENAW COUNTY; KEWEENAW PENINSULA; LAKE SUPERIOR REGION; MAGNETIZATION; METHODS; MICHIGAN; ONTARIO; ORONTO-GROUP; PALEOMAGNETISM; REMAGNETIZATION; SEDIMENTARY-ROCKS; SEDIMENTS; STRATIGRAPHY; UNITED-STATES;

---, 1979, The Slate Islands meteorite impact site: A study of shock remanent magnetization: Geophysical Journal of the Royal Astronomical Society, v. 59, p. 553-591. CANADA; DISTRICT OF THUNDER BAY; GEOPHYSICS; IMPACT; METEORITE; ONTARIO; OSLER GROUP; PALEOMAGNETISM; REMANENT-MAGNETIZATION;

---, 1982, Crustal thickness in the Lake Superior region, in Wold, R. J., and Hinze, W. J., eds., Geology and tectonics of the Lake Superior basin:, Geological Society of America, Memoir 156, p. 239-243. CRUST; GEOPHYSICS; LAKE SUPERIOR; REGIONAL; THICKNESS;

69 Halls, H. C., and Grieve, R. A. F., 1976, The Slate Islands: A probable complex meteorite impact structure in Lake Superior: Canadian Journal of Earth Sciences, v. 13, p. 1301-1309. CANADA; DISTRICT OF THUNDER BAY; IMPACT; METEORITE; ONTARIO; SLATE ISLANDS;

Halls, H. C., Manson, M. L., and Zhang, B., 1995, Are the major thrust faults of the Mid-Continent Rift and the Kapuskasing Zone part of the same tectonic zone? [abs.]: 41st Annual Institute on Lake Superior Geology, Marathon, ONT, v. 41, p. 22. AGAWA CANYON FAULT; CANADA; CANADIAN SHIELD; DISTRICT OF THUNDER BAY; GEOPHYSICS; GRENVILLE OROGENY; ISLE ROYALE FAULT; KAPUSKASING STRUCTURAL ZONE; KEWEENAW FAULT; LAKE SUPERIOR; LOWER-PROTEROZOIC; MATACHEWAN DYKES; MICHIGAN; ONTARIO; PALEOMAGNETISM; STRUCTURAL-GEOLOGY; SUPERIOR PROVINCE; THRUST-FAULTS; UNITED-STATES; UPPER- PENINSULA;

Halls, H. C., and Palmer, H. C., 1980, Partial magnetic overprinting in the Copper Harbor Formation, Michigan, and its possible relationship to native copper deposits [abs.]: Eos (American Geophysical Union Transactions), v. 61, no. 48, p. 1195-1196. AGE DATING; APPLICATIONS; CLASTIC- ROCKS; COPPER; COPPER HARBOR CONGLOMERATE; DEMAGNETIZATION; GEOCHRONOLOGY; GEOPHYSICS; LAKE SUPERIOR; MICHIGAN; MT. SIMON SANDSTONE; NATIVE COPPER; ORONTO-GROUP; OVERPRINTING; PALEOMAGNETISM; SEDIMENTARY- ROCKS; SEDIMENTS; STRATIGRAPHY; UNITED-STATES;

---, 1980, Possible remagnetization associated with native copper deposits, Michigan [abs.]: Eos (American Geophysical Union Transactions), v. 61, no. 17, p. 223. CLASTIC-ROCKS; CONGLOMERATE; COPPER; COPPER HARBOR CONGLOMERATE; GEOPHYSICS; KEWEENAW COUNTY; KEWEENAW PENINSULA; MICHIGAN; MINERALIZATION; ORE-DEPOSITS; ORONTO-GROUP; PALEOMAGNETISM; REMAGNETIZATION; SEDIMENTARY-ROCKS; SEDIMENTS; STRATIGRAPHY; UNITED-STATES;

---, 1981, Remagnetization in Keweenawan rocks: Part II: Lava flows within the Copper Harbor Conglomerate, Michigan: Canadian Journal of Earth Sciences, v. 18, no. 9, p. 1395-1408. CLASTIC-ROCKS; CONGLOMERATE; COPPER HARBOR CONGLOMERATE; GEOPHYSICS; KEWEENAW COUNTY; KEWEENAW PENINSULA; LAVA; MAGNETIC-PROPERTIES; MICHIGAN; ORONTO-GROUP; PALEOMAGNETISM; PROPERTIES; REMAGNETIZATION; SEDIMENTARY-ROCKS; SEDIMENTS; STRATIGRAPHY; UNITED-STATES;

Halls, H. C., and Pesonen, L. J., 1980, Paleomagnetism of Keweenawan rocks [abs.]: 26th Annual Institute on Lake Superior Geology, Eau Claire, WI, v. 26, p. 49. GEOPHYSICS; LOGAN LOOP; OVERPRINTING; PALEOMAGNETISM; PALEOPOLE; PALEOZOIC; PHANEROZOIC; UPPER-PROTEROZOIC;

---, 1982, Paleomagnetism of Keweenawan rocks, in Wold, R. J., and Hinze, W. J., eds., Geology and Tectonics of the Lake Superior basin:, Geological Society of America, Memoir 156, p. 173-202. CORRELATION; GEOPHYSICS; PALEOMAGNETISM; REVERSALS; STRATIGRAPHY; VOLCANIC ROCKS;

Halls, H. C., and Shaw, E. G., 1988, Paleomagnetism and orientation of Precambrian dykes, eastern Lake Superior region, and their use in estimates of crustal tilting: Canadian Journal of Earth Sciences, v. 25, p. 732-743. ALONA BAY; ARCHEAN; BARAGA DIKES; CANADA; CRUST; DIKES; DISTRICT OF ALGOMA; GEOPHYSICS; MAMAINSE POINT; MATACHEWAN DYKES; MONTREAL-RIVER; ONTARIO; PALEOMAGNETISM; PUKASKWA DIKES; STRUCTURAL-GEOLOGY; TILTING;

Halls, H. C., and West, G. F., 1967, Identification of seismic refractions in the Lake Superior syncline [abs.]: 13th Annual Institute on Lake Superior Geology, East Lansing, MI, v. 13, p. 14. GEOPHYSICS; LAKE SUPERIOR; LAKE SUPERIOR SYNCLINE; REFRACTION; SEISMIC;

---, 1971, Shallow structure and stratigraphy of the Lake Superior basin from seismic refraction measurements [abs.]: 17th Annual Institute on Lake Superior Geology, Duluth, MN, v. 17, p. 23-24. GEOPHYSICS; LAKE SUPERIOR; REFRACTION; SEISMIC; SEISMIC-SURVEYS; STRATIGRAPHY; STRUCTURAL-GEOLOGY;

---, 1971, The Isle Royale fault [abs.]: 17th Annual Institute on Lake Superior Geology, Duluth, MN, v. 17, p. 25-27. AEROMAGNETICS; FAULT; GEOPHYSICS; ISLE ROYALE; ISLE ROYALE FAULT; LAKE SUPERIOR; MICHIGAN; PALEOMAGNETISM; SEISMIC; STRUCTURAL- GEOLOGY; UNITED-STATES;

---, 1971, A seismic refraction survey in Lake Superior: Canadian Journal of Earth Sciences, v. 8, p. 610-630. CANADA; FAULT; GEOPHYSICS; LAKE SUPERIOR; MICHIPICOTEN ISLAND; MICHIPICOTEN ISLAND FAULT; REFRACTION; SEISMIC; SEISMIC-SURVEYS; SLATE ISLANDS; STRUCTURAL-GEOLOGY; TRANS SUPERIOR TECTONIC ZONE;

Hamblin, W. K., 1957, The origin of the Jacobsville Formation [abs.]: 3rd Annual Institute on Lake Superior Geology, East Lansing, MI, v. 3, p. 5. JACOBSVILLE-SANDSTONE; MICHIGAN; ORIGIN; SEDIMENTARY STRUCTURES; UNITED-STATES; UPPER-PENINSULA;

---, 1958, The Cambrian sandstones of northern Michigan:, Michigan Geological Survey, Publication 51, 149 p. CAMBRIAN; FACIES; FREDA- SANDSTONE; GEOLOGIC-FORMATIONS; GEOLOGIC-MAPS; HEAVY MINERALS; JACOBSVILLE-SANDSTONE; L'ANSE; LITHOLOGY; MARQUETTE; MICHIGAN; MUNISING-FORMATION; ORONTO-GROUP; PALEOZOIC; PHANEROZOIC; SANDSTONE; SEDIMENTARY- ROCKS; SEDIMENTS; UNITED-STATES;

---, 1961, Micro-cross-lamination in upper Keweenawan sediments of northern Michigan: Journal of Sedimentary Petrology, v. 31, no. 3, p. 390-401. COPPER HARBOR CONGLOMERATE; CROSS LAMINATION; CUSP RIPPLE MARKS; DEPOSITION; DEPOSITIONAL ENVIRONMENT; FREDA-SANDSTONE; MICHIGAN; MUD CRACKS; NONESUCH SHALE; ORONTO-GROUP; PALEOCURRENTS; RIPPLE MARKS; SANDSTONE; SEDIMENTARY STRUCTURES; SEDIMENTARY-ROCKS; SEDIMENTS; SILTSTONE; UNITED-STATES; UPPER- PENINSULA;

70 ---, 1964, Basement control of Keweenawan and Cambrian sedimentation in the Lake Superior region [abs.]: American Association of Petroleum Geologists Bulletin, v. 48, no. 4, p. 529. BASEMENT; CAMBRIAN; LAKE SUPERIOR REGION; MICHIGAN; PALEOZOIC; PHANEROZOIC; SEDIMENTATION; UNITED-STATES; UPPER-PENINSULA; WISCONSIN;

---, 1965, Basement control of Keweenawan and Cambrian sedimentation in Lake Superior region: American Association of Petroleum Geologists Bulletin, v. 49, p. 950-958. BASEMENT-CONTROL; BASINS; CAMBRIAN; DISPERSAL-PATTERNS; JACOBSVILLE-SANDSTONE; KEWEENAWAN-BASIN; LAKE SUPERIOR REGION; MICHIGAN; PALEOCURRENTS; PALEOZOIC; PHANEROZOIC; SANDSTONE; SEDIMENTARY STRUCTURES; SEDIMENTARY-PETROLOGY; SEDIMENTARY-ROCKS; SEDIMENTATION; SEDIMENTS; STRUCTURAL-GEOLOGY; UNITED-STATES;

Hamblin, W. K., and Horner, W. J., 1961, Sources of the Keweenawan conglomerate of northern Michigan: Journal of Geology, v. 69, p. 204-211. CONGLOMERATE; COPPER HARBOR CONGLOMERATE; CROSS-BEDDING; CROSS-STRATIFICATION; CURRENT BEDDING; HURON-MOUNTAINS; INTERFLOW SEDIMENTS; MELLEN-AREA; MICHIGAN; ORONTO-GROUP; PORTAGE LAKE VOLCANICS; SANDSTONE; SEDIMENTARY-ROCKS; SEDIMENTS; UNITED-STATES; UPPER-PENINSULA;

Hamblin, W. K., 1961, Paleogeographic evolution of the Lake Superior region from Late Keweenawan to Late Cambrian time: Geological Society of America Bulletin, v. 72, p. 1-18. ALONA BAY; CAMBRIAN; CANADA; CURRENT BEDDING; DISTRICT OF ALGOMA; FREDA- SANDSTONE; HEAVY MINERALS; HURON-MOUNTAINS; JACOBSVILLE-SANDSTONE; KEWEENAW PENINSULA; LAKE SUPERIOR REGION; MAMAINSE POINT; MICA BAY; MICHIGAN; ONTARIO; ORONTO-GROUP; PALEOGEOGRAPHY; PALEOZOIC; PETROGRAPHY; PETROLOGY; PHANEROZOIC; SANDSTONE; SAULT STE. MARIE; SEDIMENTARY STRUCTURES; SEDIMENTARY- ROCKS; SEDIMENTS; STRATIGRAPHY; THICKNESS; UNITED-STATES; UPPER-PENINSULA;

Hamilton, D. A., and Mereu, R. F., 1993, 2-D tomographic imaging across the North American Mid-Continent Rift System: Geophysical Journal International, v. 112, p. 344-358. GEOPHYSICS; TOMOGRAPHY;

Hamilton, S. K., 1965, Copper mineralization in the upper part of the Copper Harbor conglomerate (Precambrian) at White Pine, Michigan [M.S. Thesis]: University of Wisconsin, Madison COPPER; COPPER HARBOR CONGLOMERATE; ECONOMIC GEOLOGY; GENESIS; MICHIGAN; MICHIGAN COPPER DISTRICT; MINERAL DEPOSITS; MINERALIZATION; NONESUCH SHALE; ONTONAGON-COUNTY; ORONTO-GROUP; SEDIMENTARY-ROCKS; SEDIMENTS; UNITED-STATES; UPPER-PENINSULA; WHITE PINE MINE;

---, 1967, Copper mineralization in the upper part of the Copper Harbor Conglomerate at White Pine, Michigan: Economic Geology, v. 62, no. 7, p. 885-904. ALGODONITE; ARSENIC; BARITE; BITUMENS; CALCITE; CEMENTATION; CHALCOCITE; CHALCOPYRITE; CHLORITE; CONGLOMERATE; COPPER; COPPER HARBOR CONGLOMERATE; COVELLITE; CROSS-STRATIFICATION; CUPRIFEROUS; DIAGENESIS; DISSEMINATED ORE; DOMINO BED; ECONOMIC GEOLOGY; FAULT; GENESIS; HEMATITE; HYDROCARBONS; LOWER SANDSTONE; LOWER TRANSITION; MICHIGAN; MICHIGAN COPPER DISTRICT; MINERAL DEPOSITS; MINERALIZATION; NATIVE COPPER; NATIVE-SILVER; NONESUCH SHALE; ONTONAGON-COUNTY; ORE-DEPOSITS; ORGANIC-MATERIALS; ORIGIN; ORONTO- GROUP; PARTING-SHALE; SANDSTONE; SEDIMENTARY STRUCTURES; SEDIMENTARY-ROCKS; SEDIMENTS; SOUTHWEST MINE; STRATABOUND; STRATIGRAPHY; STRUCTURAL-GEOLOGY; THICKNESS; UNITED-STATES; UPPER SHALE; UPPER-PENINSULA; VEINS; WHITE PINE FAULT; WHITE PINE MINE;

---, 1969, Copper mineralization in the upper part of the Copper Harbor conglomerate at White Pine, Michigan; reply: Economic Geology, v. 64, p. 462-464. COPPER; COPPER HARBOR CONGLOMERATE; ECONOMIC GEOLOGY; GENESIS; MICHIGAN; MICHIGAN COPPER DISTRICT; MINERAL DEPOSITS; NONESUCH SHALE; ONTONAGON-COUNTY; ORONTO-GROUP; SEDIMENTARY-ROCKS; SEDIMENTS; UNITED-STATES; UPPER-PENINSULA; WHITE PINE MINE;

Hammond, J. G., 1986, Are the major element chemistries of 1.1 to 1.3 b.y. old basaltic rocks in intra-plate rifts different from those associated with plate separation? [abs.]: Geological Society of America Abstracts with Programs, v. 18, p. 626. FLOOD BASALTS; GEOCHEMISTRY; PLATE TECTONICS; RIFTING; RIFTS; WHOLE ROCK ANALYSES;

Han, T.-M., 1988, Genesis and metamorphism of magnetite in Biwabik Iron-Formation, Mesabi District, Minnesota [abs.]: 34th Annual Institute on Lake Superior Geology, Marquette, MI, v. 34, p. 34-36. ANIMIKIE GROUP; BIWABIK IRON-FORMATION; CONTACT METAMORPHISM; DULUTH COMPLEX; GENESIS; HEMATITE; IRON-FORMATION; LOWER-PROTEROZOIC; MAGNETITE; MARTITIZATION; MESABI RANGE; METAMORPHISM; MINERALOGY; MINNESOTA; UNITED-STATES;

Handke, M. J., and Palmquist, J. C., 1993, Ultramafic lamprophyre dikes with carbonatitic affinities near Marquette, Michigan; Evidence in support of the Thiel Fault and a Trans-Superior Tectonic Zone [abs.]: 39th Annual Institute on Lake Superior Geology, Eveleth, MN, v. 39, p. 35-36. ALKALIC COMPLEX; ALKALINE; ALKALINE INTRUSION; CANADA; CARBONATITE; COLDWELL COMPLEX; DIABASE; DIKES; DISTRICT OF THUNDER BAY; FAULTS; GEOCHEMISTRY; KILLALA LAKE ALKALIC COMPLEX; LAMPROPHYRE; LITTLE PRESQUE ISLE; MARQUETTE COUNTY; MICHIGAN; MIDDLE ISLAND POINT; ONTARIO; PORT COLDWELL; PRAIRIE LAKE CARBONATITE COMPLEX; STRUCTURAL-GEOLOGY; THIEL FAULT; TRANS SUPERIOR TECTONIC ZONE; ULTRAMAFIC; UNITED-STATES; UPPER- PENINSULA;

Handy, A. H., and Twenter, F. R., 1985, Water resources of Pictured Rocks National Lakeshore, Michigan:, U. S. Geological Survey, Water Resources Investigations, 41 p. ALGER-COUNTY; AQUIFERS; ECONOMIC GEOLOGY; GEOCHEMISTRY; GROUNDWATER; HYDROCHEMISTRY; HYDROLOGY; JACOBSVILLE-SANDSTONE; LIMNOLOGY; MICHIGAN; MUNISING-FORMATION; PICTURED ROCKS NATIONAL LAKESHORE; SANDSTONE; SEDIMENTARY-ROCKS; SEDIMENTS; UNITED-STATES; WATER-RESOURCES;

Hanes, J. A., 1987, Dating of mafic dyke swarms by the Rb-Sr, K-Ar and Sm-Nd methods, in Halls, H. C., and Fahrig, W. F., eds., Mafic Dyke Swarms:, Geological Association of Canada, Special Paper 34, p. 137-146. AGE DATING; GEOCHRONOLOGY; MAFIC; NEODYMIUM ISOTOPES; POTASSIUM-ARGON; RADIOGENIC ISOTOPES; RUBIDIUM-STRONTIUM; SAMARIUM-NEODYMIUM;

71 Hanninen, C. C., and Sipola, J. W., 1973, Thermechanized mining system at White Pine, in New horizons in rock mechanics; rock breakage techniques:, Proceedings No. 14, p. 623-648. Symposium on Rock Mechanics COPPER; ENGINEERING-GEOLOGY; EXPERIMENTAL STUDIES; MECHANICAL; METHODS; MICHIGAN; MICHIGAN COPPER DISTRICT; MINING; MINING-GEOLOGY; NONESUCH SHALE; ONTONAGON-COUNTY; ORONTO-GROUP; ROCK-BREAKING; ROCK-MECHANICS; SEDIMENTARY-ROCKS; SEDIMENTS; SHALE; SILTSTONE; STRENGTH; TECHNOLOGY; THERMAL; UNITED-STATES; UPPER-PENINSULA; WHITE PINE MINE;

Hansell, J. M., 1926, A cross-section in the Keweenawan of Wisconsin [M.S. Thesis]: University of Wisconsin, Madison, 80 p. PROTEROZOIC; UNITED-STATES; WISCONSIN;

Hanson, G. N., 1972, Application of 40Ar-39Ar dating to mafic dikes [abs.]: Geological Society of America Abstracts with Programs, v. 4, no. 7, p. 527. AGE DATING; ARCHEAN; ARGON-ARGON; CANADA; CHURCHILL PROVINCE; DIKE; DISTRICT OF THUNDER BAY; FELSIC; GEOCHRONOLOGY; LOGAN SILLS; LOWER-PROTEROZOIC; MAFIC; MINNESOTA; NIPIGON SILLS; NONACHO DIKE SWARM; NORTH SHORE VOLCANIC GROUP; ONTARIO; SILLS; UNITED-STATES; VOLCANIC ROCKS;

---, 1975, 40Ar/39Ar spectrum ages on Logan intrusions, a lower Keweenawan flow, and mafic dikes in northeastern Minnesota-northwestern Ontario: Canadian Journal of Earth Sciences, v. 12, p. 821-835. 40AR/39AR; AGE DATING; ARGON-ARGON; CANADA; DIKE; GEOCHRONOLOGY; LOGAN SILLS; MAFIC; MINNESOTA; ONTARIO; UNITED-STATES;

Hanson, G. N., and Catanzaro, E. F., 1971, Reliability of U-Pb ages of sphene in northeastern Minnesota and northwestern Ontario [abs.]: 17th Annual Institute on Lake Superior Geology, Duluth, MN, v. 17, p. 28. AGE DATING; ARCHEAN; CANADA; DULUTH COMPLEX; GEOCHRONOLOGY; GIANTS RANGE; GRANITE; ICARUS; LAYERED INTRUSION; LINDEN SYENITE; MINNESOTA; ONTARIO; RADIOGENIC ISOTOPES; SAGANAGA; SPHENE; UNITED-STATES; URANIUM-LEAD;

Hanson, G. N., Catanzaro, E. J., and Anderson, D. H., 1971, U-Pb ages for sphene in a contact metamorphic zone: Earth and Planetary Science Letters, v. 12, p. 231-237. AGE; AGE DATING; ARCHEAN; BIOTITE; CONTACT METAMORPHISM; DULUTH COMPLEX; GEOCHRONOLOGY; GIANTS RANGE; GRANITE; HORNBLENDE; LAKE COUNTY; LAYERED INTRUSION; METAMORPHISM; MINERAL AGES; MINNESOTA; POTASSIUM-ARGON; SPHENE; ST. LOUIS COUNTY; UNITED-STATES; URANIUM-LEAD;

Hanson, G. N., and Gast, P. W., 1967, Kinetic studies in a contact metamorphic zone: Geochimica et Cosmochimica Acta, v. 31, p. 1119-1153. AGE DATING; CONTACT METAMORPHISM; DULUTH COMPLEX; GEOCHRONOLOGY; LAYERED INTRUSION; MINNESOTA; UNITED- STATES;

Hanson, G. N., and Malhotra, R., 1970, K-Ar ages of mafic dikes in northeastern Minnesota [abs.]: 16th Annual Institute on Lake Superior Geology, Thunder Bay, ONT, v. 16, p. 19. AGE DATING; ALTERATION; ARCHEAN; BURIAL-METAMORPHISM; CANADA; DIKES; DISTRICT OF THUNDER BAY; GEOCHRONOLOGY; GREENSTONE BELTS; LOGAN SILLS; LOWER-PROTEROZOIC; MAFIC; METAMORPHISM; MINERAL AGES; MINNESOTA; NORTHERN LIGHT LAKE; ONTARIO; POTASSIUM-ARGON; SAGANAGA LAKE; SILLS; UNITED- STATES; VERMILION DISTRICT;

---, 1971, K-Ar ages of mafic dikes and evidence for low grade metamorphism in northeastern Minnesota: Geological Society of America Bulletin, v. 82, p. 1107-1114. AGE DATING; CANADA; CARLTON COUNTY; COOK COUNTY; DIKES; GEOCHRONOLOGY; LAKE COUNTY; LOGAN SILLS; LOWER-PROTEROZOIC; MAFIC; METAMORPHISM; MINNESOTA; NORTHERN LIGHT LAKE; ONTARIO; POTASSIUM- ARGON; PREHNITE-PUMPELLYITE FACIES; SAGANAGA LAKE; SILLS; UNITED-STATES; VERMILION DISTRICT;

Hanson, G. N., Phinney, W. C., and Gast, P. W., 1963, The thermal metamorphic effect on the Duluth Gabbro upon the Snowbank Granite [abs.]: 9th Annual Institute on Lake Superior Geology, Duluth, MN, v. 9, p. 6. AGE DATING; ARCHEAN; BIOTITE; CONTACT METAMORPHISM; GEOCHRONOLOGY; METAMORPHISM; MINERALOGY; MINNESOTA; POTASSIUM FELDSPAR; RUBIDIUM-STRONTIUM; SNOWBANK; UNITED-STATES;

Harcourt, G. A., 1938, The southwestern part of the Schreiber area, in: Ontario Department of Mines, Part 9, v. 47, p. 1-18. CANADA; DIATREME; DISTRICT OF THUNDER BAY; GOLD RANGE DIATREME; ONTARIO; SCHREIBER-HEMLO DISTRICT;

Harder, E. C., and Johnson, A. W., 1918, Preliminary report on the geology of east-central Minnesota including the Cuyuna iron-ore district:, Minnesota Geological Survey, Bulletin 15, 178 p. CUYUNA IRON RANGE; GEOLOGY; IRON; IRON ORE; IRON-FORMATION; LOWER- PROTEROZOIC; MINNESOTA; SEDIMENTARY-ROCKS; UNITED-STATES;

Hardyman, R. F., 1969, The petrography of a section of the basal Duluth Complex, St. Louis County, northeastern Minnesota [M.S. Thesis]: University of Minnesota, Minneapolis, 132 p. ALTERATION; DRILL HOLE; B1-61; BABBITT; BORNITE; CHALCOCITE; CHALCOPYRITE; CORDIERITE; CUBANITE; DIGENITE; DULUTH COMPLEX; ILMENITE; LAYERED INTRUSION; MACKINAWITE; MAGNETITE; MINERAL CHEMISTRY; MINERAL DEPOSIT; MINERALIZATION; MINERALOGY; MINNAMAX; MINNESOTA; OLIVINE; PARTRIDGE RIVER INTRUSION; PENTLANDITE; PETROGRAPHY; PLAGIOCLASE; PYROXENE; PYRRHOTITE; ST. LOUIS COUNTY; SULFIDE; SULFIDES; TALNAKHITE; TROCTOLITE SERIES; UNITED-STATES; VESUVIANITE; WOLLASTONITE;

---, 1970, Subsolidus reequilibration and secondary alteration of a primary sulfide assemblage in the basal Duluth gabbro complex, Minnesota [abs.]: Geological Society of America Abstracts with Programs, v. 2, p. 98-99. B1-61; BABBITT; COPPER; DRILL HOLE; DULUTH COMPLEX; LAYERED INTRUSION; MINERAL DEPOSIT; MINERALIZATION; MINNAMAX; MINNESOTA; NICKEL; PARTRIDGE RIVER INTRUSION; ST. LOUIS COUNTY; SULFIDE; SULFIDES; UNITED-STATES;

Harringer, R. V., 1990, Copper country: Lapidary Journal, v. 44, no. 1, p. 65-68. ABANDONED-MINES; COLLECTING; COPPER-HARBOR; COPPER-ORES; ECONOMIC GEOLOGY; HISTORY; METAL-ORES; MICHIGAN; MINERAL-LOCALITIES; MINERALS; MINING; MISCELLANEOUS-MINERALS; POPULAR-GEOLOGY; SEDIMENTARY-ROCKS; SEDIMENTS; UNITED-STATES; UPPER-PENINSULA;

72 Harris, J. M., 1954, Further notes on field work in the copper-nickel prospect area: Lake and St. Louis counties:, Minnesota Geological Survey, Summary Report 7, 4 p. COPPER; DULUTH COMPLEX; GEOLOGY; LAKE COUNTY; LAYERED INTRUSION; MINNESOTA; NICKEL; ST. LOUIS COUNTY; UNITED-STATES;

Harris, R. D., 1972, Investigation of a possible mineralogical control of roof failure at the White Pine Copper Mine [M.S. Thesis]: Michigan Technological University, Houghton COPPER; MICHIGAN; MICHIGAN COPPER DISTRICT; MINE; MINERALOGY; MINING; ONTONAGON-COUNTY; ROCK-MECHANICS; UNITED-STATES; UPPER-PENINSULA; WHITE PINE MINE;

Harris, T. N., 1993, Evidence from fluid inclusions for two generations of apatite at the Duluth Complex, Minnesota [abs.]: Geological Society of America Abstracts with Programs, v. 25, p. 24. APATITE; DULUTH COMPLEX; FISH LAKE; FLUID INCLUSIONS; LAYERED INTRUSION; MINNESOTA; ST. LOUIS COUNTY; UNITED-STATES;

Harrison, W., Edgar, D., Van Luik, A., Hinze, W., Braile, L., Kalliokoski, J., Pfannkuch, H., Wright, H., Jr., Tisue, M., and Sood, M., 1983, Geology, hydrology, and mineral resources of crystalline rock areas of the Lake Superior region, United States:, Argonne National Laboratory, ANL/ES-134, Part 1, 384 p. ARCHEAN; COPPER; CRUSHED STONE; CRUST; DIMENSION STONE; DULUTH COMPLEX; EARTHQUAKES; FAULTS; GEOLOGY; GEOMORPHOLOGY; GEOPHYSICS; GLACIAL GEOLOGY; GRAVITY; GROUNDWATER; HYDROLOGY; INDUSTRIAL MINERALS; IRON ORE; IRON-FORMATION; LAKE SUPERIOR; LAYERED INTRUSION; LINEAMENT; MAGNETICS; MESABI RANGE; METAMORPHISM; MICHIGAN; MICHIGAN COPPER DISTRICT; MINE; MINERAL PRODUCTION; MINERAL-RESOURCES; MINNESOTA; NICKEL; NONESUCH SHALE; ONTONAGON-COUNTY; ORONTO-GROUP; OUIS; PALEOZOIC; RESISTIVITY; SEISMIC; STRUCTURAL- GEOLOGY; UNITED-STATES; UPPER-PENINSULA; VMS; VOLCANOGENIC MASSIVE SULFIDES; WHITE PINE MINE; WISCONSIN;

Harrison, W. J., 1971, Clay mineral assemblages and chlorite polytypes in the basal Nonesuch Shale, White Pine, Michigan [M.S. Thesis]: Northern Illinois University, De Kalb, 84 p. CHLORITE; CHLORITE-GROUP; CLAY MINERALS; COPPER; METAMORPHISM; METASEDIMENTARY-ROCKS; MICHIGAN; MICHIGAN COPPER DISTRICT; MINERAL-ASSEMBLAGES; MINERALOGY; NONESUCH SHALE; ONTONAGON-COUNTY; ORONTO-GROUP; SEDIMENTARY-ROCKS; SEDIMENTS; SHEET-SILICATES; SILICATES; STRATIGRAPHY; UNITED-STATES; UPPER-PENINSULA; WHITE PINE MINE;

Hart, S. R., and Steinhart, J. S., 1965, Terrestrial heat flow: Measurement in lake bottoms: Science, v. 149, p. 1499-1501. ANALYTICAL TECHNIQUES; GEOPHYSICS; HEAT-FLOW; LAKE SUPERIOR; PROTEROZOIC;

Hart, S. R., Steinhart, J. S., and Smith, T. J., 1968, Heat flow, in: Washington, D.C., Carnegie Institution, Year Book, v. 66, p. 52-57. GEOPHYSICS; HEAT-FLOW; LAKE SUPERIOR; PROTEROZOIC;

---, 1994, Terrestrial heat flow in Lake Superior: Canadian Journal of Earth Sciences, v. 31, no. 4, p. 698-708. BOUGUER-ANOMALIES; CANADA; DISTRICT OF THUNDER BAY; GEOPHYSICS; GLIMPCE; GRAVITY; HEAT-FLOW; KEWEENAW PENINSULA; LAKE SUPERIOR; MICHIGAN; ONTARIO; REFLECTION; SEDIMENTS; SEISMIC; SEISMIC LINE A; SEISMIC LINE B; SEISMIC LINE C; SEISMIC LINE F; SEISMIC-SURVEYS; UNITED-STATES; UPPER-PENINSULA; VOLCANIC ROCKS;

Hase, H. W., Jr., 1973, Geological-geophysical site investigation of a portion of the Student Development Complex, Michigan Technology University, Houghton County, Michigan [M.S. Thesis]: Michigan Technological University, 35 p. GEOLOGY; GEOPHYSICS; HOUGHTON-COUNTY; MICHIGAN; UNITED-STATES; UPPER-PENINSULA;

Haskin, L., 1968, Rare-earth elements in the Duluth gabbro [abs.]: 14th Annual Institute on Lake Superior Geology, Superior, WI, v. 14, p. 10. DULUTH COMPLEX; GEOCHEMISTRY; LAYERED INTRUSION; MINNESOTA; RARE-EARTH ELEMENTS; REE; UNITED-STATES;

Hatch, J. R., and Morey, G., 1985, Hydrocarbon source rock evaluation of middle Proterozoic Solor Church Formation, North American Mid-Continent Rift System: American Association of Petroleum Geologists Bulletin, v. 69, no. 8, p. 1208-1216. COPPER; EXPLORATION; FOND DU LAC FORMATION; GAS; GEOCHEMISTRY; GEOTHERMAL-GRADIENT; HYDROCARBONS; KEWEENAWAN-SUPERGROUP; LONSDALE 65-1; MICHIGAN; MICHIGAN COPPER DISTRICT; MINNESOTA; NONESUCH SHALE; OIL; ONTONAGON-COUNTY; ORGANIC GEOCHEMISTRY; ORGANIC MATTER; ORONTO-GROUP; RICE COUNTY; SAINT CROIX HORST; SANDSTONE; SEDIMENTARY- ROCKS; SEDIMENTOLOGY; SEDIMENTS; SILTSTONE; SOLOR CHURCH FORMATION; SOURCE-ROCKS; STRATIGRAPHY; THERMAL- MATURITY; TOTAL ORGANIC CARBON; UNITED-STATES; UPPER-PENINSULA; WHITE PINE MINE;

Hatch, J. R., and Morey, G. B., 1984, Hydrocarbon source-rock evaluation; Solor Church Formation (middle Proterozoic, Keweenawan Supergroup), southeastern Minnesota:, U. S. Geological Survey, Open-File Report, 19 p. CHROMATOGRAMS; CLASTIC-ROCKS; ECONOMIC GEOLOGY; FUEL-RESOURCES; GEOCHEMISTRY; HYDROCARBONS; KEWEENAWAN-SUPERGROUP; MATURITY; MINNESOTA; NATURAL-GAS; ORGANIC-MATERIALS; RICE COUNTY; SEDIMENTARY-ROCKS; SEDIMENTS; SOLOR CHURCH FORMATION; SOURCE-ROCKS; UNITED-STATES;

Hauck, S., Severson, M., Zanko, L., Barnes, S.-J., Morton, P., Alminas, H., Foord, E. E., and Dahlberg, E. H., 1995, A review of sulfide, platinum group element and oxide mineralization along the western contact of the Duluth Complex: As related to structural development, in Ojakangas, R. W., Dickas, A., and Green, J. C., eds., Basement Tectonics 10: Netherlands, Kluwer Academic Publishers, p. 47-54. ALTERATION; ARSENIDES; BABBITT; BATHTUB; BORNITE; CHALCOCITE; CHALCOPYRITE; CHLORIDE; COPPER; COVELLITE; CUBANITE; DIGENITE; DISSEMINATED ORE; DULUTH COMPLEX; DUNKA ROAD; FAULTS; FLUIDS; FOOTWALL; GEOCHEMISTRY; GOLD; HYDROTHERMAL; ILMENITE; LAKE COUNTY; LOCAL BOY; LOCAL BOY ANTICLINE; MACKINAWITE; MAGNETITE; MASSIVE SULFIDE ORE; MAUCHERITE; MINERALIZATION; MINNAMAX; MINNESOTA; NATIVE COPPER; NATIVE-SILVER; NICKEL; OUIS; OXIDE-BEARING ULTRAMAFIC INTRUSION; OXIDES; PARTRIDGE RIVER INTRUSION; PENTLANDITE; PGE; PLATINUM-GROUP ELEMENTS; PYRITE; PYRRHOTITE; SERPENTINIZATION; SOUTH KAWISHIWI INTRUSION; SPRUCE ROAD; ST. LOUIS COUNTY; STRATABOUND; STRATIGRAPHY; STRUCTURAL-GEOLOGY; SULFIDES; UNITED-STATES; VALLERITE; VIOLARITE; WATER HEN;

73 Hauck, S., Severson, M., Zanko, L., Morton, P., Alminas, H., and Dahlberg, H., 1992, A review of sulfide, platinum group elements, and oxide mineralization along the western contact of the Duluth Complex: As related to structural development [abs.]: 10th International Conference on Basement Tectonics, Duluth, MN, p. 183-185 BABBITT; BATHTUB; BIRCH LAKE; CHLORIDES; CHLORINE; COPPER; DU-15; DULUTH COMPLEX; DUNKA ROAD; GENESIS; GOLD; LAKE COUNTY; LAYERED INTRUSION; LOCAL BOY; LONGEAR; LONGNOSE; MINERAL DEPOSIT; MINERALIZATION; MINNAMAX; MINNESOTA; NICKEL; ORE DEPOSIT; ORIGIN; OUIS; OXIDE; OXIDE-BEARING ULTRAMAFIC INTRUSION; PARTRIDGE RIVER INTRUSION; PARTRIDGE RIVER TROCTOLITE SERIES; PGE; PLATINUM-GROUP ELEMENTS; RIFTING; SECTION 17; SERPENTINE; SILVER; SOUTH FILSON CREEK; SOUTH KAWISHIWI INTRUSION; SOUTHWEST EXTENSION; SPRUCE ROAD; ST. LOUIS COUNTY; STRUCTURAL-GEOLOGY; SULFIDE; SULFIDES; TIGER BOY; UNITED-STATES; WATER HEN;

Hauck, S. A., Ager, C., Pastor, J., Zanko, L., and Aaseng, N., 1990, Airborne imaging scanner survey of northeastern Minnesota:, Natural Resources Research Institute, University of Minnesota, Duluth, Technical Report NRRI\GMIN\TR-89-13, 55 p. AIRBORNE IMAGING SCANNER SURVEY; AIRBORNE SPECTROMETRY; ARCHEAN; BABBITT; BOREAL FOREST; COPPER; DULUTH COMPLEX; DUNKA PIT; DUNKA ROAD; ECOLOGY; GEOPHYSICS; GOLD; GREENSTONE BELTS; GROUND SPECTROMETRY; IRON; LAKE COUNTY; LAYERED INTRUSION; LONGEAR; LONGNOSE; MATURI; MINERAL DEPOSIT; MINERALIZATION; MINNESOTA; NICKEL; NRRI; ORE DEPOSIT; ORE- DEPOSITS; OUIS; OXIDE-BEARING ULTRAMAFIC INTRUSION; PARTRIDGE RIVER INTRUSION; PARTRIDGE RIVER TROCTOLITE SERIES; PGE; PLATINUM-GROUP ELEMENTS; REMOTE SENSING; SECTION 17; SERPENTINE; SOUTH FILSON CREEK; SOUTH KAWISHIWI INTRUSION; SPECTRAL REFLECTANCE; SPECTRORADIOMETER; SPRUCE ROAD; ST. LOUIS COUNTY; SULFIDES; TITANIUM; UNITED-STATES; VEGETATION; VERMILION DISTRICT; VERMILION FAULT;

Hauck, S. A., and Barnes, R. J., 1989, Precious metals (Pt-Pd-Au-Ag) in three copper-nickel deposits in the Duluth Complex: Duluth, MN, Natural Resources Research Institute, University of Minnesota, Duluth, Technical Summary Report, NRRI/GMIN-TSR-1, 19 p. COPPER; DULUTH COMPLEX; GEOSTATISTICS; GOLD; LAKE COUNTY; LAYERED INTRUSION; MINERALIZATION; MINNESOTA; NICKEL; NRRI; ORIGIN; PGE; PLATINUM-GROUP ELEMENTS; PRECIOUS METALS; SILVER; ST. LOUIS COUNTY; SULFIDES; UNITED-STATES;

Hauck, S. A., ed., 1993, Ceramic tile and lightweight aggregate product development using Minnesota clays: Duluth, Natural Resources Research Institute, University of Minnesota, Duluth, Technical Report NRRI/TR-91/23, 248 p. ANORTHOSITE; BALL CLAY; BLOATING CLAY; BRENNA FORMATION; BROWN-COUNTY; CENOZOIC; CERAMIC TILE; CLAY; CRETACEOUS; DECORAH SHALE; DULUTH COMPLEX; ECONOMICS; EXPANDING CLAY; GLACIAL ; INDUSTRIAL MINERALS; KAOLIN; KITTSON COUNTY; LIGHTWEIGHT AGGREGATE; MARKETING; MERIDIAN AGGREGATE QUARRY; MESOZOIC; MINERAL ECONOMICS; MINERAL PROCESSING; MINNESOTA; NRRI; ORDOVICIAN; PALEOZOIC; PHANEROZOIC; PLEISTOCENE; QUATERNARY; SPRINGFIELD; ST. CLOUD; STEARNS COUNTY; TACONITE; TACONITE CONCENTRATE; UNITED-STATES;

Hauser, E. C., 1992, A buried Grenville foreland thrust belt in the eastern U.S. midcontinent from COCORP and industrial data [abs.]: Geological Society of America Abstracts with Programs, v. 24, no. 7, p. A364. CANADA; COCORP; FORELAND-BASINS; GEOPHYSICS; GLIMPCE; GRANITE-RHYOLITE TERRAINS; GRENVILLE; GRENVILLE FRONT TECTONIC ZONE; ILLINOIS; INDIANA; LAKE SUPERIOR; LAKE- HURON; MICHIGAN; MIDDLE RUN FORMATION; OHIO; ONTARIO; REFLECTION; SEISMIC; SEISMIC-SURVEYS; STRUCTURAL- GEOLOGY; THRUST-FAULTS; UNITED-STATES;

---, 1992, Layered Proterozoic rocks of the eastern U.S. midcontinent and their involvement in Grenville foreland thrusting [abs.]: Eos (American Geophysical Union Transactions), v. 73, no. 14, p. 319. COCORP; DRILL HOLE; FORELAND-BASINS; GEOPHYSICS; GLIMPCE; GRANITE- RHYOLITE TERRAINS; GRAVITY; GRAVITY-ANOMALIES; GRENVILLE FRONT TECTONIC ZONE; GRENVILLE OROGENY; GRENVILLE-FRONT; INDIANA; LAKE-HURON; LOWER PENINSULA; MICHIGAN; OHIO; SEDIMENTARY-ROCKS; SEDIMENTS; SEISMIC; SEISMIC-SURVEYS; STRUCTURAL-GEOLOGY; THRUST FAULT; UNITED-STATES;

---, 1993, Grenville foreland thrust belt hidden beneath the eastern U.S. midcontinent: Geology, v. 21, p. 61-64. CANADA; COCORP; GEOPHYSICS; GRENVILLE; GRENVILLE FORELAND THRUST BELT; GRENVILLE OROGENY; GRENVILLE-FRONT; KENTUCKY; LOWER PENINSULA; MICHIGAN; MIDDLE RUN FORMATION; OHIO; ONTARIO; PLATE TECTONICS; REFLECTION; SEDIMENTARY- ROCKS; SEDIMENTS; SEISMIC; SEISMIC-SURVEYS; STRUCTURAL-GEOLOGY; THRUST FAULT; UNITED-STATES;

Hawley, J. E., 1929, Lead and zinc deposits, Dorion and McTavish Townships, Thunder Bay district, in: Ontario Department of Mines, Vol. 38, pt. 6, p. 58-85. Accompanied by Map 38f, scale 1:63,360 CANADA; DISTRICT OF THUNDER BAY; DORION TOWNSHIP; LEAD; MCTAVISH TOWNSHIP; MINERALIZATION; ONTARIO; ORE-DEPOSITS; ZINC;

Heaman, L., and Machado, N., 1990, Timing and origin of Midcontinent Rift alkaline magmatism [abs.]: International Conference on Geochronology, Canberra, v. 7, p. 46. AGE DATING; ALKALIC COMPLEX; ALKALINE; ALKALINE INTRUSION; CANADA; COLDWELL COMPLEX; DISTRICT OF THUNDER BAY; GEOCHRONOLOGY; ONTARIO; ORIGIN; PORT COLDWELL; PROTEROZOIC;

Heaman, L. M., and Krogh, T. E., 1986, The U-Pb systematics of perovskite and age of some North American kimberlite and lamprophyre intrusions [abs.]: Terra Cognita, v. 6, no. 2, p. 158. AGE DATING; CANADA; DIAMONDS; DIKES; GEOCHRONOLOGY; KIMBERLITES; LAMPROPHYRE; PEROVSKITE; URANIUM-LEAD;

Heaman, L. M., and Machado, H., 1987, Isotope geochemistry of the Coldwell alkaline complex I-U-Pb studies on accessory minerals [abs.]: Geological Association of Canada/Mineralogical Association of Canada Program with Abstracts, v. 12, p. 54. AGE DATING; ALKALIC COMPLEX; ALKALINE; ALKALINE INTRUSION; CANADA; COLDWELL COMPLEX; DISTRICT OF THUNDER BAY; GEOCHRONOLOGY; MINERALOGY; ONTARIO; PORT COLDWELL; URANIUM-LEAD;

Heaman, L. M., and Machado, N., 1987, Isotope geochemistry of the Coldwell alkaline complex: 1. U-Pb studies on accessory minerals [abs.]: Geological Association of Canada/Mineralogical Association of Canada Program with Abstracts, v., p. 54. ALKALIC COMPLEX; ALKALINE;

74 ALKALINE INTRUSION; CANADA; COLDWELL COMPLEX; DISTRICT OF THUNDER BAY; ONTARIO; PORT COLDWELL; RADIOGENIC ISOTOPES; URANIUM-LEAD;

---, 1992, Timing of midcontinent rift alkaline magmatism, North America: Evidence from the Coldwell Complex: Contributions to Mineralogy and Petrology, v. 110, p. 289-303. AGE DATING; ALKALIC COMPLEX; ALKALINE; ALKALINE INTRUSION; CANADA; COLDWELL COMPLEX; DISTRICT OF THUNDER BAY; GEOCHRONOLOGY; MAGMATISM; ONTARIO; PORT COLDWELL; SUPERIOR PROVINCE;

Hearst, R. B., Morris, W. A., and Thomas, M. D., 1994, Magnetic interpretation along the Sudbury Structure lithoprobe transect, in Lightfoot, P. C., and Naldrett, A. J., eds., Proceedings of the Sudbury-Noril'sk Symposium:, Ontario Geological Survey, Special Volume 5, p. 33-43. AEROMAGNETICS; BENY GREENSTONE BELT; CANADA; CARTIER GRANITE; DIABASE; DIABASE DIKES; DIKES; DISTRICT OF SUDBURY; GEOPHYSICS; GRANOPHYRE; HURONIAN; HURONIAN SUPERGROUP; LEVACK GNEISS; LITHOPROBE; LOWER- PROTEROZOIC; MAGNETICS; NORITE; ONAPING FORMATION; ONTARIO; ONWATIN FORMATION; PENOKEAN OROGENY; REMANENT-MAGNETIZATION; SOUTH RANGE; STRUCTURAL-GEOLOGY; ; SUDBURY IGNEOUS COMPLEX; SUDBURY STRUCTURE;

Hedgman, C. A., 1992, Provenance and tectonic setting of the Jacobsville Sandstone, from Ironwood to Keweenaw Bay, Michigan [M.S. Thesis]: University of Cincinnati, Cincinnati, Ohio, 158 p. GOGEBIC-COUNTY; IRONWOOD; JACOBSVILLE-SANDSTONE; KEWEENAW-BAY; LAKE-GOGEBIC; MICHIGAN; SANDSTONE; UNITED-STATES; UPPER-PENINSULA;

---, 1992, Petrology and provenance of a conglomerate facies of the Jacobsville Sandstone: Ironwood to Bergland, Michigan [abs.]: 38th Annual Institute on Lake Superior Geology, Hurley, WI, p. 32-33. ARCHEAN; CLASTS; CONGLOMERATE; EROSION; FAULTS; IRON-FORMATION; JACOBSVILLE-SANDSTONE; KEWEENAW FAULT; LAKE-GOGEBIC; MICHIGAN; PELTON CREEK FAULT; PETROLOGY; PROVENANCE; SANDSTONE; SEDIMENTARY-ROCKS; STRUCTURAL-GEOLOGY; THRUST FAULT; UNITED-STATES; UPLIFT; UPPER- PENINSULA;

---, 1992, Petrology and provenance of a conglomerate facies of the Jacobsville Sandstone; Ironwood to Bergland, Michigan [abs.]: Geological Society of America Abstracts with Programs, v. 24, no. 7, p. A329. ARENITE; BERGLAND; CHEMICALLY PRECIPITATED ROCKS; CLASTS; CONGLOMERATE; DIP; GOGEBIC-COUNTY; IRON-FORMATION; IRONWOOD; JACOBSVILLE-SANDSTONE; KEWEENAW FAULT; LAKE-GOGEBIC; LITHOFACIES; MICHIGAN; PELTON CREEK FAULT; SANDSTONE; SEDIMENTARY-ROCKS; SEDIMENTS; STRUCTURAL-GEOLOGY; UNITED-STATES; UPPER-PENINSULA;

Heinrich, E. W., 1973, An unusual manganese deposit in Keweenawan lava, Copper Harbor, Michigan [abs.]: 19th Annual Institute on Lake Superior Geology, Madison, WI, v. 19, p. 12. BRAUNITE; COPPER-HARBOR; ECONOMIC GEOLOGY; GENESIS; KEWEENAW COUNTY; MANGANESE; MANGANESE-LAKE; MANGANITE; MICHIGAN; ORE-DEPOSITS; ORIENTITE; PYROLUSITE; REPLACEMENT; SEDIMENTARY-ROCKS; SEDIMENTS; TEXTURES; UNITED-STATES;

---, 1978, Industrial sand and sandstone resources of Michigan [abs.]: 24th Annual Institute on Lake Superior Geology, Milwaukee, WI, v. 24, p. 15. AJIBIK-QUARTZITE; CAMBRIAN; CENOZOIC; DEVONIAN; DIMENSION STONE; ECONOMIC GEOLOGY; FERROSILICON; GLACIAL GEOLOGY; GLASS; HURON COUNTY; INDUSTRIAL MINERALS; JACOBSVILLE-SANDSTONE; LOWER PENINSULA; MARSHALL- SANDSTONE; MICHIGAN; MUNISING-SANDSTONE; NAPOLEON SANDSTONE; PALEOZOIC; PHANEROZOIC; PLEISTOCENE; QUATERNARY; SAND; SANDSTONE; SYLVANIA-SANDSTONE; UNITED-STATES; UPPER-PENINSULA;

---, 1979, Economic geology of the sand and sandstone resources of Michigan:, Michigan Geological Survey, Report of Investigations 21, 31 p. AJIBIK-QUARTZITE; CLASTIC-ROCKS; CLASTIC-SEDIMENTS; ECONOMIC GEOLOGY; INDUSTRIAL MINERALS; IONIA-SANDSTONE; JACOBSVILLE-SANDSTONE; MARSHALL-SANDSTONE; MESNARD-QUARTZITE; MICHIGAN; MUNISING-FORMATION; SAND; SANDSTONE; SEDIMENTARY-ROCKS; SEDIMENTS; SYLVANIA-SANDSTONE; UNITED-STATES; UPPER-PENINSULA;

Heinrich, E. W., and Vian, R. W., 1966, A barite-quartz phase in the Firesand River carbonatite, Wawa, Ontario [abs.]: 12th Annual Institute on Lake Superior Geology, Sault Ste. Marie, MI, v. 12, p. 11. ALKALIC COMPLEX; ALKALINE; ALTERATION; BARITE; CANADA; CARBONATIZATION; FIRESAND RIVER CARBONATITE COMPLEX; ONTARIO; PETROLOGY; VEINS; WAWA SUBPROVINCE;

Helsley, C. E., 1965, Paleomagnetic results from Precambrian rocks of central Arizona and Duluth, Minnesota: American Geophysical Union Transactions, v. 46, p. 67. ARIZONA; DULUTH COMPLEX; GEOPHYSICS; LAYERED INTRUSION; MINNESOTA; PALEOMAGNETISM; UNITED-STATES;

Helsley, C. E., and Spall, H. R., 1966, A compilation of paleomagnetic investigations of rocks from North America: American Geophysical Union Transactions, v. 47, no. 1, p. 291-302. ARIZONA; BARRON-QUARTZITE; BEARTOOTH MOUNTAINS; BEAVER BAY COMPLEX; BRITISH COLUMBIA; CALIFORNIA; CAMBRIAN; CANADA; ; CENOZOIC; CENTRAL AMERICA; COLORADO; COPPERMINE RIVER BASALTS; CRETACEOUS; DEVONIAN; DISTRICT OF SUDBURY; DULUTH COMPLEX; ENDION SILL; FREDA-SANDSTONE; GEOPHYSICS; GEORGIA; GREENLAND; GUATEMALA; HAWAII; IDAHO; JACOBSVILLE-SANDSTONE; JURASSIC; KEWEENAW PENINSULA; LABRADOR; LAYERED INTRUSION; LOGAN SILLS; LOWER-PROTEROZOIC; MACKENZIE DYKE SWARM; MAINE; MARYLAND; MASSACHUSETTS; MELLEN COMPLEX; MESOZOIC; MEXICO; MICHIGAN; MINNESOTA; MIOCENE; MONTANA; NEVADA; NEW BRUNSWICK; NEW HAMPSHIRE; NEW JERSEY; NEW MEXICO; NEW YORK; NEWFOUNDLAND; NONESUCH SHALE; NORTH SHORE VOLCANIC GROUP; NORTHWEST TERRITORIES; NOVA SCOTIA; OKLAHOMA; OLIGOCENE; ONTARIO; ORDOVICIAN; OREGON; ORONTO-GROUP; PALEOMAGNETISM; PALEOZOIC; PENNSYLVANIA; PENNSYLVANIAN; PERMIAN; PHANEROZOIC; PLEISTOCENE; PLIOCENE; PORTAGE LAKE VOLCANICS; QUATERNARY; QUEBEC; SANDSTONE; SILURIAN; SIOUX-QUARTZITE; ST. LOUIS COUNTY; STILLWATER COMPLEX; SUDBURY IGNEOUS COMPLEX; SUDBURY STRUCTURE; TERTIARY; TEXAS; TRIASSIC; UNITED-STATES; UPPER-PENINSULA; UPPER-PROTEROZOIC; UTAH; VERMONT; VICTORIA ISLAND; VIRGINIA; VOLCANIC ROCKS; WEST VIRGINIA; WISCONSIN; WYOMING; YUKON;

75 Henderson, F. A., 1971, Petrofabrics of the Nonesuch Formation (Precambrian) and its relationship to primitive stress directions in the White Pine (north Michigan) ore body [M.S. Thesis]: Michigan Technological University, Houghton CLASTICS; CLASTICS-TERRIGENOUS; COPPER; MICHIGAN; MICHIGAN COPPER DISTRICT; NONESUCH SHALE; ONTONAGON-COUNTY; ORONTO-GROUP; PETROFABRICS; POLYMETALLIC-ORES; SEDIMENTARY-ROCKS; SEDIMENTS; SHALE; STRESS; STRUCTURAL-ANALYSIS; STRUCTURAL-GEOLOGY; TERRIGENOUS; UNITED-STATES; UPPER-PENINSULA; WHITE PINE MINE;

Henry, S. G., 1976, Paleomagnetism of the upper Keweenawan sediments, the Nonesuch Shale and Freda Sandstone [M.S. Thesis]: University of Michigan, Ann Arbor FREDA-SANDSTONE; GEOPHYSICS; MICHIGAN; NONESUCH SHALE; ORONTO-GROUP; PALEOMAGNETISM; SANDSTONE; SEDIMENTARY-ROCKS; SEDIMENTS; STRATIGRAPHY; UNITED-STATES; UPPER-PENINSULA; WISCONSIN;

---, 1978, Chemical demagnetization; methods and procedures [abs.]: Eos (American Geophysical Union Transactions), v. 59, no. 12, p. 1036-1037. CHEMICAL-METHODS; CLASTIC-ROCKS; DEMAGNETIZATION; DETRITAL REMANENT MAGNETIZATION; FREDA-SANDSTONE; GEOPHYSICS; METHODS; NATURAL REMANENT MAGNETIZATION; ORONTO-GROUP; PALEOMAGNETISM; REMANENT- MAGNETIZATION; SAMPLE-PREPARATION; SANDSTONE; SEDIMENTARY-ROCKS; SEDIMENTS; TECHNIQUES; UNITED-STATES;

---, 1978, Chemical demagnetization; methods and procedure [abs.]: Eos (American Geophysical Union Transactions), v. 59, no. 4, p. 267. CHEMICAL-DEMAGNETIZATION; DEMAGNETIZATION; EXPERIMENTAL STUDIES; FREDA-SANDSTONE; GEOPHYSICS; METHODS; ORONTO-GROUP; PALEOMAGNETISM; RED-BEDS; SAMPLE-PREPARATION; SANDSTONE; SEDIMENTARY-ROCKS; SEDIMENTS; TECHNIQUES; UNITED-STATES;

---, 1979, Chemical demagnetization; methods, procedures, and applications through vector analysis: Canadian Journal of Earth Sciences, v. 16, no. 9, p. 1832-1841. BLOCKING-TEMPERATURE; CHEMICAL REMANENT MAGNETIZATION; CLASTIC-ROCKS; DEMAGNETIZATION; EXPERIMENTAL STUDIES; FREDA-SANDSTONE; GEOPHYSICS; METHODS; MICHIGAN; ORONTO-GROUP; PALEOMAGNETISM; RED- BEDS; SAMPLE-PREPARATION; SANDSTONE; SEDIMENTARY-ROCKS; SEDIMENTS; TECHNIQUES; UNITED-STATES;

Henry, S. G., and Mauk, F. J., 1975, Paleomagnetism of the upper Keweenawan (1.05+ or -.46 b.y.) Nonesuch Shale and Freda Sandstone [abs.]: Eos (American Geophysical Union Transactions), v. 56, p. 596. FREDA-SANDSTONE; GEOPHYSICS; MICHIGAN; NONESUCH SHALE; ORONTO-GROUP; PALEOMAGNETISM; POLE-POSITIONS; PORCUPINE MOUNTAINS; PRESQUE-ISLE; SANDSTONE; SEDIMENTARY- ROCKS; SEDIMENTS; SHALE; STRATIGRAPHY; UNITED-STATES; UPPER-PRECAMBRIAN;

Henry, S. G., Mauk, F. J., and Van der Voo, R., 1977, Paleomagnetism of the upper Keweenawan sediments; the Freda Sandstone and Nonesuch Shale: Canadian Journal of Earth Sciences, v. 14, no. 5, p. 1128-1138. CONTINENTAL-DRIFT; FREDA-SANDSTONE; GEOPHYSICS; GOGEBIC- COUNTY; MICHIGAN; NONESUCH SHALE; ONTONAGON-COUNTY; ORONTO-GROUP; PALEOMAGNETISM; PLATE TECTONICS; POLAR-WANDERING; POLE-POSITIONS; SANDSTONE; SEDIMENTARY-ROCKS; SEDIMENTS; STRATIGRAPHY; UNITED-STATES; UPPER-PENINSULA;

Henry, S. G., and Van der Voo, R., 1976, Secondary magnetization of the upper Keweenawan sediments; Nonesuch Shale and Freda Sandstone [abs.]: Eos (American Geophysical Union Transactions), v. 57, p. 752. DECLINATION; FREDA-SANDSTONE; GEOPHYSICS; INCLINATION; MICHIGAN; NONESUCH SHALE; ORONTO-GROUP; PALEOMAGNETISM; POLE-POSITIONS; SANDSTONE; SEDIMENTARY-ROCKS; SEDIMENTS; STRATIGRAPHY; UNITED-STATES; UPPER-UPPER-WISCONSIN;

Herdman, D. J., 1974, Chemical petrology of the Port Coldwell alkali intrusion [M.Sc. Thesis]: McMaster University, Hamilton, Ontario, Canada ALKALIC COMPLEX; ALKALINE; ALKALINE INTRUSION; CANADA; COLDWELL COMPLEX; DISTRICT OF THUNDER BAY; GEOCHEMISTRY; ONTARIO; PETROLOGY; PORT COLDWELL; PROTEROZOIC;

Herman, J. H., 1974, Environmental law and mining: Naturalist, v. 25, no. 2/3, p. 33-39. COPPER; DULUTH COMPLEX; ENVIRONMENT; ENVIRONMENTAL; LAW; MINING; MINNESOTA; NICKEL; REGIONAL COPPER-NICKEL STUDY; SULFIDES; UNITED-STATES;

Herz, N., 1976, Titanium deposits in anorthosite massifs, in: U. S. Geological Survey, Professional Paper 959-D, p. D1-D6. ANORTHOSITE; ANORTHOSITE MASSIFS; DULUTH COMPLEX; GRENVILLE; LAYERED INTRUSION; MINNESOTA; NEW YORK; ORE-DEPOSITS; SANFORD LAKE; TI; TITANIUM; UNITED-STATES; VIRGINIA;

Heslop, J. B., 1968, Mineralogy and textural relationships of the Mount Mollie sulphides, Pine Bay area, Thunder Bay District, Ontario [B.Sc. Thesis]: University of Western Ontario, London, Ontario, Canada, 68 p. CANADA; CRYSTAL LAKE INTRUSION; DISTRICT OF THUNDER BAY; MINERALOGY; MOUNT MOLLIE; ONTARIO; PARDEE TOWNSHIP; PINE BAY; SULFIDES;

---, 1970, Geology, mineralogy and textural relationships of the Coppercorp deposit, Mamainse Point area, Ontario [M.S. Thesis]: Carleton University, Ottawa, Ontario, Canada, 103 p. CANADA; COPPER; COPPERCORP DEPOSIT; DISTRICT OF ALGOMA; GEOLOGY; MAMAINSE POINT; MINERALIZATION; MINERALOGY; ONTARIO; SULFIDES;

Heslop, J. B., and Tupper, W. M., 1974, Geology, mineralogy and textural relationships of the Coppercorp deposit, Mamainse Point area, Ontario [abs.]: 20th Annual Institute on Lake Superior Geology, Sault Ste. Marie, ONT, v. 20, p. 15. ALGODONITE; ALTERATION; ARCHEAN; ARSENIAN COPPER; ARSENIC; BORNITE; BRECCIATION; CANADA; CHALCOCITE; CHALCOPYRITE; CLAUSTHALITE; COPPER; COPPERCORP DEPOSIT; COVELLITE; DIGENITE; DIKES; DISTRICT OF ALGOMA; DOMEYKITE; FAULTS; GANGUE; GEOLOGY; GOLD; HEMATITE; MAMAINSE POINT; MINERALOGY; NATIVE COPPER; NATIVE GOLD; ONTARIO; PYRITE; STRUCTURAL- GEOLOGY; SULFIDES; SUPERGENE; TETRAHEDRITE; UNCONFORMITY; VEINS; WITTICHENITE;

Hieshima, G. B., 1991, Source and thermal maturity of bitumen in Precambrian Nonesuch Formation inferred from isotopic compositions of individual normal alkanes [abs.]: American Association of Petroleum Geologists Bulletin, v. 75, p. 594-595. ALIPHATIC-HYDROCARBONS; ALKANES;

76 BITUMENS; DIAGENESIS; GEOCHEMISTRY; HYDROCARBONS; ISOTOPES; MICHIGAN; NONESUCH SHALE; ORGANIC-MATERIALS; ORONTO-GROUP; PETROLEUM; SEDIMENTARY-ROCKS; SEDIMENTS; THERMAL-MATURITY; UNITED-STATES; WISCONSIN;

---, 1992, Organic and isotopic geochemical study of the middle Proterozoic Nonesuch Formation, North American Midcontinent Rift [Ph.D. Dissertation]: Indiana University, Bloomington, 187 p. BIOMARKERS; CARBON; CARBON ISOTOPES; DIAGENESIS; ISOTOPES; KEROGEN; MARINE-ENVIRONMENT; MICHIGAN; NONESUCH SHALE; ORGANIC-CARBON; ORGANIC-MATERIALS; ORONTO- GROUP; RECONSTRUCTION; SEDIMENTARY-ROCKS; SEDIMENTS; STABLE-ISOTOPES; SULFUR; SULFUR ISOTOPES; UNITED- STATES; WHOLE ROCK ANALYSES;

Hieshima, G. B., and Mauk, J. L., 1990, Maturation of organic matter during mineralization at White Pine, North American Midcontinent Rift [abs.]: Geological Society of America Abstracts with Programs, v. 22, no. 7, p. 13. BITUMENS; COPPER; COPPER-ORES; ECONOMIC GEOLOGY; GENESIS; GEOCHEMISTRY; MATURATION; MICHIGAN; MICHIGAN COPPER DISTRICT; MINERALIZATION; NONESUCH SHALE; ONTONAGON-COUNTY; ORGANIC GEOCHEMISTRY; ORGANIC-MATERIALS; ORONTO-GROUP; SEDIMENTARY-ROCKS; SEDIMENTS; THERMAL-MATURITY; UNITED-STATES; UPPER-PENINSULA; WHITE PINE MINE;

Hieshima, G. B., and Pratt, L. M., 1991, Sulfur/carbon ratios and extractable organic matter of the middle Proterozoic Nonesuch Formation, North American Midcontinent Rift: Precambrian Research, v. 54, no. 1, p. 65-79. ALKANES; CARBON; COPPER; CYCLOHEXYL ALKANES; GAS; GEOCHEMISTRY; HYDROCARBONS; ISOPRENOIDS; MICHIGAN; MICHIGAN COPPER DISTRICT; MONOMETHYL-BRANCHED ALKANES; NONESUCH SHALE; OIL; ONTONAGON-COUNTY; ORGANIC GEOCHEMISTRY; ORGANIC-CARBON; ORGANIC- MATERIALS; ORONTO-GROUP; PETROLEUM; PHYTANE; PRISTANE; SEDIMENTARY-ROCKS; SEDIMENTS; SULFUR; THERMAL- MATURITY; UNITED-STATES; UPPER-PENINSULA; WHITE PINE MINE; WISCONSIN;

---, 1992, Organic geochemical constraints on tectonic evolution of the North American Midcontinent Rift [abs.]: Geological Society of America Abstracts with Programs, v. 24, no. 7, p. A329. BITUMENS; BURIAL-METAMORPHISM; COPPER; EVOLUTION; GEOCHEMISTRY; GEOTHERMAL-GRADIENT; HOPANES; KEROGEN; METAMORPHISM; METHYLPHENANTHRENE; MICHIGAN; MICHIGAN COPPER DISTRICT; NONESUCH SHALE; ONTONAGON-COUNTY; ORGANIC GEOCHEMISTRY; ORGANIC-MATERIALS; ORONTO-GROUP; PORTAGE LAKE VOLCANICS; SEDIMENTARY-ROCKS; SEDIMENTS; STERANES; TECTONICS; TEMPERATURE; THERMAL- MATURITY; UNITED-STATES; UPPER-PENINSULA; WHITE PINE MINE; WISCONSIN;

Hieshima, G. B., Pratt, L. M., and Hayes, J. M., 1990, Novel isotopic compositions of total organic carbon and bitumen in the Nonesuch Formation, North American Mid-Continental Rift [abs.]: American Association of Petroleum Geologists Bulletin, v. 74, no. 5, p. 674. BITUMENS; CARBON; CARBON ISOTOPES; ECONOMIC GEOLOGY; GEOCHEMISTRY; MICHIGAN; NONESUCH SHALE; OIL; ORGANIC-CARBON; ORGANIC- MATERIALS; ORONTO-GROUP; PETROLEUM; SEDIMENTARY-ROCKS; SEDIMENTS; STABLE-ISOTOPES; UNITED-STATES; UPPER- PENINSULA; WISCONSIN;

Hieshima, G. B., Summons, R. E., and Pratt, L. M., 1991, Thermal maturity of the 1.05 Ga Nonesuch Formation, North American Midcontinent Rift; biomarker ratios and hopane and sterane stereoisomers [abs.]: American Association of Petroleum Geologists Bulletin, v. 75, no. 3, p. 595. ALKANES; BIOMARKERS; CHROMATOGRAMS; GEOCHEMISTRY; HOPANES; HYDROCARBONS; ISOMERS; MASS-SPECTRA; MICHIGAN; NONESUCH SHALE; ORGANIC-MATERIALS; ORONTO-GROUP; PRISTANE; SEDIMENTARY-ROCKS; SEDIMENTS; STERANES; THERMAL-MATURITY; UNITED-STATES; WISCONSIN;

Hinze, W. J., 1963, Regional gravity and magnetic anomaly maps of the Southern Peninsula of Michigan:, Michigan Geological Survey, Report of Investigation 1, 26 p. BASEMENT; GEOPHYSICS; GRAVITY; GRAVITY-ANOMALIES; LOWER PENINSULA; MAGNETIC-ANOMALIES; MAGNETICS; MAPS; MICHIGAN; UNITED-STATES;

---, 1989, The Midcontinent Rift [abs.]: Eos (American Geophysical Union Transactions), v. 70, no. 15, p. 272. CANADA; GRENVILLE OROGENY; ORIGIN; RIFTING; UNITED-STATES;

Hinze, W. J., Allen, D. J., Braile, L. W., and Mariano, J., 1995, The Midcontinent Rift System: An overview [abs.], in Ojakangas, R. W., Dickas, A. B., and Green, J. C., eds., Basement Tectonics 10: Proceedings of the tenth international conference on basement tectonics: Netherlands, Kluwer Academic Publishers, v. 4, p. 3-5. CRUST; GEOCHRONOLOGY; GEOPHYSICS; GRABENS; HOTSPOT; KANSAS; KENTUCKY; KEWEENAWAN-SUPERGROUP; LAKE SUPERIOR REGION; LOWER PENINSULA; MANTLE; MANTLE PLUME; MICHIGAN; MINNESOTA; OHIO; OKLAHOMA; ORIGIN; RIFT BASIN; SEDIMENTARY-ROCKS; STRUCTURAL-GEOLOGY; TENNESSEE; TEXAS; UNITED-STATES; UPPER-PENINSULA; VOLCANIC ROCKS; WISCONSIN;

Hinze, W. J., Allen, D. J., Fox, A. J., Sunwood, D., Woelk, T., and Green, A. G., 1992, Geophysical investigations and crustal structure of the North American Midcontinent Rift system: Tectonophysics, v. 213, no. 1-2, p. 17-32. CRUST; GEOPHYSICS; LAKE SUPERIOR; STRUCTURAL- GEOLOGY;

Hinze, W. J., Allen, D. J., and Mariano, J., 1992, Lithosphere of the Midcontinent Rift region: Progress and problems [abs.]: Eos (American Geophysical Union Transactions), v. 73, no. 14, p. 319. COMPRESSION-TECTONICS; EXTENSIONAL TECTONICS; GEOPHYSICS; GRENVILLE OROGENY; LITHOSPHERE; MANTLE; ORIGIN; RIFTING; SEDIMENTARY-ROCKS; STRUCTURAL-GEOLOGY; TECTONICS; VOLCANIC ROCKS;

Hinze, W. J., Bradley, J. W., and Brown, A. R., 1978, Gravimeter survey in the Michigan Basin deep borehole: Journal of Geophysical Research, v. 83, no. B12, p. 5864-5868. ANTRIM SHALE; BASS ISLANDS DOLOMITE; ; ; ; ; BOREHOLE; CAMBRIAN; CARBONATE; ; CENOZOIC; CLASTICS; COLDWATER-SHALE; DENSITY; DESBACH SANDSTONE; DEVONIAN; DUNDEE-LIMESTONE; EAU CLAIRE FORMATION; EVAPORITES; FRANCONIA SANDSTONE; GEOPHYSICS; GLACIAL DRIFT; GLENWOOD FORMATION; GRATIOT-COUNTY; GRAVITY; GRAVITY-SURVEYS; JACOBSVILLE-SANDSTONE; JURASSIC; KIMERIDGIAN RED BEDS; LOWER PENINSULA; MARSHALL-

77 SANDSTONE; MCCLURE-SPARKS NO. 1; MESOZOIC; MICHIGAN; MICHIGAN-BASIN; MISSISSIPPIAN; MT. SIMON SANDSTONE; NIAGARAN FORMATION; ORDOVICIAN; PALEOZOIC; PHANEROZOIC; PLEISTOCENE; PRAIRIE DU CHIEN FORMATION; RED-BEDS; SALINA FORMATION; SANDSTONE; SEDIMENTARY-ROCKS; SEDIMENTS; SILURIAN; ST. PETER SANDSTONE; ; TRAVERSE LIMESTONE; TREMPLEAU FORMATION; ; UNITED-STATES; UTICA-SHALE;

Hinze, W. J., Braile, L. W., and Chandler, V. W., 1990, A geophysical profile of the southern margin of the Midcontinent Rift System in western Lake Superior: Tectonics, v. 9, p. 303-310. ARCHEAN; CANADA; COMPRESSION-TECTONICS; COPPER HARBOR CONGLOMERATE; EXTENSIONAL TECTONICS; FAULTS; GEOLOGY; GEOPHYSICS; GLIMPCE; GNEISS; GRAVITY; JACOBSVILLE-SANDSTONE; KEWEENAW FAULT; KEWEENAW PENINSULA; KEWEENAWAN-SUPERGROUP; LAKE SUPERIOR; LOWER-PROTEROZOIC; MAGNETICS; MICHIGAN; MINNESOTA; ONTARIO; ORONTO-GROUP; PORTAGE LAKE VOLCANICS; POWDER MILL GROUP; REFLECTION; SANDSTONE; SEDIMENTARY-ROCKS; SEISMIC; SEISMIC-SURVEYS; STRUCTURAL-GEOLOGY; UNITED-STATES; UPPER-PENINSULA; WISCONSIN;

Hinze, W. J., Braile, L. W., McGinnis, L. D., Cannon, W. F., Milkereit, B., Sexton, J. L., and Wang, H. F., 1989, Structure of the Mid-continent Rift System in eastern Lake Superior: Results from 8-sec reflection seismic data and gravity and magnetic anomalies [abs.]: Eos (American Geophysical Union Transactions), v. 70, p. 277. GEOPHYSICS; GRAVITY; GRAVITY-ANOMALIES; LAKE SUPERIOR; MAGNETIC-ANOMALIES; MAGNETICS; REFLECTION; SEISMIC; SEISMIC-SURVEYS; UNITED-STATES;

Hinze, W. J., Davidson, D. M., and Roy, R. F., 1971, Continental rifts [abs.]: 17th Annual Institute on Lake Superior Geology, Duluth, MN, v. 17, p. 29. ORIGIN; PLATE TECTONICS; RIFTING; RIFTS;

Hinze, W. J., and Hood, P. J., 1989, The magnetic anomaly map of North America: A new tool for regional geologic mapping, in Bally, A. W., and Palmer, A. R., eds., :, Geological Society of America, v. A, p. 29-38. CANADA; GEOLOGY; GEOPHYSICS; MAGNETIC-ANOMALIES; MAGNETICS; MAP; MAPPING; UNITED-STATES;

Hinze, W. J., Kellogg, R. L., and Merritt, D. W., 1971, Gravity and aeromagnetic anomaly maps of the southern peninsula of Michigan:, Geological Survey Division, Michigan Department of Natural Resources, Report of Investigation 14, 16 p. AEROMAGNETIC SURVEY; AEROMAGNETICS; GEOPHYSICS; GRAVITY; GRAVITY-SURVEYS; LOWER PENINSULA; MAPS; MICHIGAN; MICHIGAN-BASIN; UNITED-STATES;

Hinze, W. J., Kellogg, R. L., and O'Hara, N. W., 1975, Geophysical studies of basement geology of southern peninsula of Michigan: American Association of Petroleum Geologists Bulletin, v. 59, no. 9, p. 1562-1584. AEROMAGNETIC SURVEY; AEROMAGNETICS; BASEMENT; BOUGUER-ANOMALIES; FELSIC; GEOLOGY; GEOPHYSICAL-SURVEYS; GEOPHYSICS; GNEISS; GRAVITY; GRAVITY-ANOMALIES; GRENVILLE-FRONT; HOWELL ANTICLINE; LOWER PENINSULA; MAFIC; MAP; MICHIGAN; MICHIGAN-BASIN; SEDIMENTARY- ROCKS; STRUCTURAL-GEOLOGY; UNITED-STATES; VOLCANIC ROCKS;

Hinze, W. J., and Kelly, W. C., 1988, Scientific drilling into the Midcontinent Rift System [abs.]: 34th Annual Institute on Lake Superior Geology, Marquette, MI, v. 34, p. 37-39. DRILLING; KANSAS; MICHIGAN; MINNESOTA; UNITED-STATES; UPPER-PENINSULA;

Hinze, W. J., McGinnis, L. D., Cannon, W. F., Milkereit, B., Sexton, J. L., and Wang, H. F., 1989, Structure of the Midcontinent Rift System in eastern Lake Superior: Results from 8-sec reflection seismic data and gravity and magnetic anomalies [abs.]: Eos (American Geophysical Union Transactions), v. 70, no. 15, p. 277. GEOPHYSICS; GLIMPCE; GRABENS; GRAND ISLAND; GRANT-NORPAC; GRAVITY; GRAVITY-ANOMALIES; LAKE SUPERIOR; MAGNETIC-ANOMALIES; MAGNETICS; REFLECTION; SEDIMENTARY-ROCKS; SEDIMENTS; SEISMIC; SEISMIC- SURVEYS; STRUCTURAL-GEOLOGY;

Hinze, W. J., and Merritt, D. W., 1969, Basement rocks of the southern peninsula of Michigan, in Stonehouse, H. B., ed., Studies of the Precambrian of the Michigan Basin: Denver, CO, Michigan Basin Geological Society, p. 28-59. GUIDEBOOK; LOWER PENINSULA; MICHIGAN; MICHIGAN-BASIN; UNITED-STATES;

Hinze, W. J., O'Hara, N. W., and Trow, J. W., 1966, Aeromagnetic studies of eastern Lake Superior [abs.]: 12th Annual Institute on Lake Superior Geology, Sault Ste. Marie, MI, v. 12, p. 12. AEROMAGNETIC SURVEY; AEROMAGNETICS; FAULTS; ISLE ROYALE FAULT; KEWEENAW PENINSULA; LAKE SUPERIOR; MICHIGAN; STRUCTURAL-GEOLOGY; UNITED-STATES; UPPER-PENINSULA;

Hinze, W. J., O'Hara, W. N., Trow, J. W., and Secor, G. B., 1966, Aeromagnetic studies of eastern Lake Superior, in The earth beneath the continents:, American Geophysical Union, Geophysical Monograph 10, p. 45-110. AEROMAGNETIC SURVEY; AEROMAGNETICS; CANADA; FAULTS; GEOPHYSICS; LAKE SUPERIOR; MICHIGAN; MICHIPICOTEN ISLAND; ONTARIO; UNITED-STATES;

Hinze, W. J., Roy, R. F., and Davidson, D. M., 1972, The origin of late Precambrian rifts [abs.]: Geological Society of America Abstracts with Programs, v. 4, no. 7, p. 723. ORIGIN; PLATE TECTONICS; RIFTING; RIFTS; UNITED-STATES;

Hinze, W. J., Trow, J. W., O'Hare, N. W., Secor, G. B., and Wold, R. J., 1965, Aeromagnetic survey of Lakes Superior, Huron, and Michigan [abs.]: U. S. Progress Report Internal Upper Mantle Project. AEROMAGNETIC SURVEY; AEROMAGNETICS; CANADA; DISTRICT OF ALGOMA; GEOPHYSICS; HURON-MOUNTAINS; LAKE MICHIGAN; LAKE SUPERIOR; LAKE-HURON; MICHIGAN; MINNESOTA; ONTARIO; UNITED-STATES; UPPER-PENINSULA; WISCONSIN;

Hinze, W. J., and Wold, R. J., 1982, Lake Superior geology and tectonics--overview and major unsolved problems, in Wold, R. J., and Hinze, W. J., eds., Geology and tectonics of the Lake Superior basin:, Geological Society of America, Memoir 156, p. 273-280. CANADA; GEOLOGY; LAKE SUPERIOR; MICHIGAN; MINNESOTA; ONTARIO; TECTONICS; UNITED-STATES; WISCONSIN;

Hinze, W. J., Wold, R. J., and O'Hara, N. W., 1980, Gravity and magnetic anomaly studies of Lake Superior [abs.]: 26th Annual Institute on Lake Superior Geology, Eau Claire, WI, v. 26, p. 40-41. BAYFIELD-GROUP; BOUGUER-ANOMALIES; CRUST; GEOPHYSICS; GRAVITY;

78 GRAVITY-ANOMALIES; JACOBSVILLE-SANDSTONE; LAKE SUPERIOR; MAGNETIC-ANOMALIES; MAGNETICS; MODELLING; SEDIMENTARY-ROCKS; VOLCANIC ROCKS;

---, 1982, Gravity and magnetic anomaly studies of Lake Superior, in Wold, R. J., and Hinze, W. J., eds., Geology and tectonics of the Lake Superior basin:, Geological Society of America, Memoir 156, p. 203-222. ALKALIC COMPLEX; ALKALINE; ALKALINE INTRUSION; CANADA; COLDWELL COMPLEX; DISTRICT OF THUNDER BAY; GEOPHYSICS; GRAVITY; MAGNETICS; ONTARIO; PORT COLDWELL; PROTEROZOIC;

Hite, D. M., 1967, Re-examination of the Jacobsville, in Correlation problems of the Cambrian and Ordovician outcrop areas, northern peninsula of Michigan:, Michigan Basin Geological Society, Annual Field Excursion, p. 79-81. CAMBRIAN; CORRELATION; JACOBSVILLE-SANDSTONE; MICHIGAN; PALEOZOIC; PHANEROZOIC; SANDSTONE; SEDIMENTARY-ROCKS; SEDIMENTS; STRATIGRAPHY; UNITED-STATES; UPPER-PENINSULA;

---, 1968, Sedimentology of the upper Keweenawan Sequence of northern Wisconsin and adjacent Michigan (Precambrian) [Ph.D. Dissertation]: University of Wisconsin, Madison, 217 p. GENESIS; KEWEENAWAN-GROUP; MICHIGAN; PROCESSES; REGIONAL; SEDIMENTARY- PETROLOGY; SEDIMENTARY-ROCKS; SEDIMENTATION; SEDIMENTOLOGY; SEDIMENTS; UNITED-STATES; UPPER-PENINSULA; WISCONSIN;

Ho, E. S., Mauk, J. L., and Meyers, P. A., 1991, The Keweenawan Nonesuch Formation of the Midcontinent Rift, northern Michigan; copper-silver ore deposition and thermal history [abs.]: Michigan: Its geology and geologic resources: A second symposium, program and abstracts, Michigan Geological Survey, Lansing, MI, p. 10. COPPER; COPPER HARBOR CONGLOMERATE; COPPER-ORES; DEPOSITION; ECONOMIC GEOLOGY; METAMORPHISM; MICHIGAN; MICHIGAN COPPER DISTRICT; NONESUCH SHALE; ONTONAGON-COUNTY; ORONTO- GROUP; SEDIMENTARY-ROCKS; SEDIMENTS; SILVER; SILVER-ORES; UNITED-STATES; UPPER-PENINSULA; UPPER- PRECAMBRIAN;

Ho, E. S., Meyers, P. A., and Mauk, J. L., 1990, Organic geochemical study of mineralization in the Keweenawan Nonesuch Formation at White Pine, Michigan: Organic Geochemistry, v. 16, p. 229-234. COPPER; COPPER-ORES; ECONOMIC GEOLOGY; EXPERIMENTAL STUDIES; GENESIS; GEOCHEMICAL-CONTROLS; GEOCHEMISTRY; MICHIGAN; MICHIGAN COPPER DISTRICT; MINERAL DEPOSITS; MINERALIZATION; NONESUCH SHALE; ONTONAGON-COUNTY; ORGANIC GEOCHEMISTRY; ORGANIC-MATERIALS; ORONTO- GROUP; SEDIMENTARY-ROCKS; SEDIMENTS; SILVER-ORES; UNITED-STATES; UPPER-PENINSULA; WHITE PINE MINE;

Hoering, T. C., 1964, Chemicals from the Nonesuch shale of Michigan, in Year Book 63, 1963-64: Washington, D.C., Carnegie Institute, p. 262-264. CHROMATOGRAPHY; GEOCHEMISTRY; HYDROCARBONS; MAJOR ELEMENT ANALYSES; MICHIGAN; NONESUCH SHALE; ORGANIC GEOCHEMISTRY; ORGANIC-MATERIALS; ORONTO-GROUP; SEDIMENTARY-ROCKS; SEDIMENTS; UNITED-STATES;

---, 1976, Molecular fossils from the Precambrian Nonesuch Shale, in: Washington, D.C., Carnegie Institution, Yearbook, 1975-76, v. 75, p. 806-813. COPPER; FRACTIONATION; GAS-CHROMATOGRAPHY; GEOCHEMISTRY; HYDROCARBONS; MASS; METHODS; MICHIGAN; MICHIGAN COPPER DISTRICT; MOLECULAR-FOSSILS; NONESUCH SHALE; NORTHWEST; ONTONAGON-COUNTY; ORGANIC- MATERIALS; ORONTO-GROUP; SATURATED-HYDROCARBONS; SEDIMENTARY-ROCKS; SEDIMENTS; SPECTRA; UNITED-STATES; UPPER-PENINSULA; WHITE PINE MINE;

Hoeve, J., and Quirt, D., 1986, A diagenetic-hydrothermal origin for unconformity-related and stratiform copper deposits in the Central African and Michigan copper districts [abs.]: Geological Association of Canada/Mineralogical Association of Canada Program with Abstracts, v. 11, p. 82. AFRICA; ATHABASCA-DISTRICT; CANADA; COPPER; COPPER-ORES; DIAGENESIS; ECONOMIC GEOLOGY; HYDROTHERMAL; METAL-ORES; MICHIGAN; NONESUCH SHALE; ORONTO-GROUP; PORTAGE LAKE VOLCANICS; SASKATCHEWAN; SEDIMENTARY- ROCKS; SEDIMENTS; STRATIFORM; STRATIFORM-DEPOSITS; UNCONFORMITIES; UNITED-STATES; UPPER-PENINSULA; URANIUM- ORES;

Hoffman, P. F., 1988, United Plates of America: Origin and early evolution of (2.0 to 1.0 Ga) [abs.]: 34th Annual Institute on Lake Superior Geology, Marquette, MI, v. 34, p. 42-44. ARCHEAN; CANADA; CENTRAL PLAINS OROGEN; COLLISION; COLLISION ZONE; CONTINENTAL-MARGIN; CRUST; FAULTS; GREENLAND; GRENVILLE OROGENY; ISLAND ARC; KETILIDIAN OROGEN; KLIPPE; LAURENTIA; LOWER-PROTEROZOIC; MACKENZIE DYKE SWARM; MAKKOVIK-KETILIDIAN OROGEN; MANITOBA; MAZATZAL OROGEN; MICROCONTINENT; OCEANIC ISLAND ARC; PENOKEAN OROGEN; PLATE TECTONICS; QUEBEC; SASKATCHEWAN; STRUCTURAL-GEOLOGY; SUBDUCTION; SUPERSWELL; SUTURE; TRANS-HUDSON OROGEN; UNITED-STATES; UPLIFT; WOPMAY OROGEN; WYOMING PROVINCE; YAVAPAI OROGEN; YAVAPAI-CENTRAL PLAINS OROGEN;

---, 1989, Speculations on Laurentia's first gigayear (2.0 to 1.0 Ga): Geology, v. 17, p. 135-138. ANOROGENIC; CANADA; DIKE-SWARMS; DIKES; GEOPHYSICS; LAURENTIA; LOWER-PROTEROZOIC; MACKENZIE DIKES; MACKENZIE DYKE SWARM; MAGMATISM; MANTLE; REFLECTION; RIFTING; SEISMIC; SUDBURY DIKES; SUPERCONTINENT; SUPERSWELL; UNITED-STATES;

---, 1989, Precambrian geology and tectonic history of North America, in Bally, A. W., and Palmer, A. R., eds., The geology of North America-An overview: Boulder, CO, Geological Society of America, v. A, p. 447-512. ARCHEAN; CANADA; GEOLOGY; LOWER-PROTEROZOIC; UNITED-STATES; UPPER-PROTEROZOIC;

Hoffmann, M. R., and Eisenreich, S. J., 1979, Kinetics and mechanisms of the oxidative-dissolution of metal sulfide minerals found in Duluth-Gabbro ore: Department of Civil and Mineral Engineering, University of Minnesota. COPPER; DISSOLUTION; DULUTH COMPLEX; KINETICS; LAYERED INTRUSION; MINNESOTA; NICKEL; OXIDATION; REGIONAL COPPER-NICKEL STUDY; SULFIDE; UNITED-STATES;

79 Holcomb, F. W., 1975, Geological map of the eastern half of the City of Houghton, Michigan [M.S. Thesis]: Michigan Technological University, Houghton, 43 p. GEOLOGY; HOUGHTON-COUNTY; KEWEENAW PENINSULA; MAP; MICHIGAN; UNITED-STATES; UPPER- PENINSULA; VOLCANIC ROCKS;

Holden, E. F., 1925, The cause of color in smokey quartz and amethyst: American Mineralogist, v. 10, p. 203-252. AMETHYST; CANADA; COLOR; GEMSTONES; MINERALOGY; ONTARIO; SMOKEY QUARTZ;

Holliday, R. W., 1955, Investigation of the Chippewa copper-nickel prospect near Rockmont, Douglas County, Wisconsin:, U. S. Bureau of Mines, Report of Investigations 5114, 11 p. BASALT; BASE METAL ANALYSES; CHIPPEWA MINE; COPPER; DOUGLAS-COUNTY; FAULTS; GEOCHEMISTRY; MINERALIZATION; NATIVE COPPER; NICKEL; STRUCTURAL-GEOLOGY; UNDERGROUND MINE; UNITED- STATES; VOLCANIC ROCKS; WISCONSIN;

Hollister, V. F., 1980, Origin of graphite in the Duluth Complex: Economic Geology, v. 75, p. 764-766. ANIMIKIE; ANIMIKIE GROUP; DULUTH COMPLEX; GRAPHITE; LAYERED INTRUSION; LOWER-PROTEROZOIC; MINNESOTA; SEDIMENTARY-ROCKS; UNITED-STATES; VIRGINIA FORMATION;

Holst, T. B., Mullenmeister, E. E., Chandler, V. W., Green, J. C., and Weiblen, P. W., 1986, Relationship of structural geology of the Duluth Complex to economic mineralization:, Minnesota Department of Natural Resources, Division of Minerals, Report 241-2, 165 p. AEROMAGNETICS; BABBITT; COPPER; DULUTH COMPLEX; DUNKA PIT; FAULTS; GEOPHYSICS; GRAVITY; LAYERED INTRUSION; MINERAL DEPOSIT; MINERALIZATION; MINNAMAX; MINNESOTA; NICKEL; ORIGIN; PARTRIDGE RIVER INTRUSION; ST. LOUIS COUNTY; STRUCTURAL-GEOLOGY; SULFIDES; UNITED-STATES;

Holst, T. B., Mullenmeister, E. E., and Green, J. C., 1985, Keweenawan structural features at the base of the Duluth Complex in the Dunka Pit near Babbitt, Minnesota [abs.]: 31st Annual Institute on Lake Superior Geology, Kenora, ONT, v. 31, p. 35. COPPER; DULUTH COMPLEX; DUNKA PIT; LAYERED INTRUSION; MINERALIZATION; MINNESOTA; NICKEL; ORE DEPOSIT; SOUTH KAWISHIWI INTRUSION; ST. LOUIS COUNTY; STRUCTURAL-GEOLOGY; SULFIDE; SULFIDES; UNITED-STATES;

Hong, S.-M., 1992, Alteration of the Portage Lake Volcanics in the St. Louis Mine near Calumet, Michigan [M.S. Thesis]: Michigan Technological University, Houghton ALTERATION; KEWEENAW COUNTY; KEWEENAW PENINSULA; MICHIGAN; MINE; PORTAGE LAKE VOLCANICS; ST. LOUIS MINE; UNITED-STATES; UPPER-PENINSULA;

Honnorez, J. J., 1978, Preliminary results of a petrological and geochemical study of the lower metagabbro from the basement of the Michigan basin: Journal of Geophysical Research, v. 83. GABBRO; GEOCHEMISTRY; GRATIOT-COUNTY; GREENSCHIST-FACIES; LOWER PENINSULA; MCCLURE-SPARKS NO. 1; METAMORPHISM; MICHIGAN; MICHIGAN-BASIN; PETROLOGY; UNITED-STATES;

Horner, W. J., 1958, Paleocurrent studies of the middle and upper Keweenawan conglomerates of Michigan [M.S. Thesis]: University of Kansas, Lawrence, 38 p. CLASTIC-ROCKS; CONGLOMERATE; MICHIGAN; PALEOCURRENTS; SEDIMENTARY-ROCKS; SEDIMENTS; STRATIGRAPHY; UNITED-STATES; UPPER-PENINSULA;

Hornstein, O. M., 1950, A field and petrographic study of some extrusive and metasedimentary rocks along the Carp and Little Carp rivers in Ontonagon and Gogebic counties, Michigan [M.S. Thesis]: Michigan State University, East Lansing, 55 p. CARP RIVER; GOGEBIC-COUNTY; LITTLE CARP RIVER; MICHIGAN; ONTONAGON-COUNTY; PETROGRAPHY; SEDIMENTARY-ROCKS; SEDIMENTOLOGY; SEDIMENTS; UNITED-STATES; UPPER-PENINSULA; VOLCANIC ROCKS;

Horton, R. J., 1993, Prehistoric copper mining in the Lake Superior basin [abs.]: 39th Annual Institute on Lake Superior Geology, Eveleth, MN, v. 39, p. 43-44. ARCHEOLOGY; CANADA; COPPER; HISTORY; ISLE ROYALE; KEWEENAW PENINSULA; MICHIGAN; MICHIGAN COPPER DISTRICT; MINING; ONTARIO; UNITED-STATES; UPPER-PENINSULA; WISCONSIN;

Hotchkiss, W. O., 1923, The Lake Superior geosyncline: Geological Society of America Bulletin, v. 34, p. 669-678. GEOLOGY; GEOSYNCLINE; LAKE SUPERIOR; PROTEROZOIC;

Hotchkiss, W. O., Rooney, W. J., and Fisher, J., 1929, Earth-resistivity measurements in the Lake Superior copper county, in Geophysical Prospecting:, American Institute of Mining and Metallurgical Engineers, p. 51-67. COPPER; GEOPHYSICS; MICHIGAN; MINERALIZATION; RESISTIVITY; RESISTIVITY SURVEY; UNITED-STATES; UPPER-PENINSULA; WISCONSIN;

Hough, J. L., 1958, Geology of the Great Lakes: Champaign-Urbana, University of Illinois Press, 313 p. ALKALIC COMPLEX; ALKALINE; ALKALINE INTRUSION; CANADA; COLDWELL COMPLEX; DISTRICT OF THUNDER BAY; GEOLOGY; LAKE SUPERIOR; ONTARIO; PORT COLDWELL; REGIONAL; STRUCTURAL-GEOLOGY; UNITED-STATES;

Houghton, D., 1841, [Fourth] annual report of the State Geologist:, Michigan House of Representatives, Document no. 27, 184 p. COPPER; MICHIGAN; MICHIGAN COPPER DISTRICT; MINERALIZATION; NATIVE COPPER; UNITED-STATES; UPPER-PENINSULA;

Howard, K. A., 1991, Intrusion of horizontal dikes: Tectonic significance of Middle Proterozoic diabase sheets widespread in the upper crust of the southwestern United States: Journal of Geophysical Research, v. 96, no. B7, p. 12,461-12,478. ARIZONA; CALIFORNIA; CRUST; DIABASE; DIKES; EXTENSIONAL TECTONICS; TECTONICS; UNITED-STATES;

80 Hoy, L. D., and Ohmoto, H., 1989, Constraints for the genesis of redbed-associated stratiform Cu deposits from sulphur and carbon mass-balance relations, in Boyle, R. W., Brown, A. C., Jefferson, C. W., Jowett, E. C., and Kirkham, R. V., eds., Sediment-hosted stratiform copper deposits:, Geological Association of Canada, Special Paper 36, p. 135-149. BRINES; CARBON; COPPER; GENESIS; MASS BALANCE; MICHIGAN; MICHIGAN COPPER DISTRICT; ONTONAGON-COUNTY; ORIGIN; RED-BEDS; STRATIFORM; SULFUR; UNITED-STATES; UPPER- PENINSULA; WHITE PINE MINE;

Hubbard, H. A., 1967, Keweenawan volcanic rocks near Ironwood, Michigan [abs.]: 13th Annual Institute on Lake Superior Geology, East Lansing, MI, v. 13, p. 20-21. GEOPHYSICS; KEWEENAW POINT; MAGNETICS; MICHIGAN; PALEOMAGNETISM; PORTAGE LAKE VOLCANICS; SOUTH RANGE; UNITED-STATES; UPPER-PENINSULA; VOLCANIC ROCKS;

---, 1968, Stratigraphic relationships of some Keweenawan rocks of Michigan and Wisconsin [abs.]: 14th Annual Institute on Lake Superior Geology, Superior, WI, v. 14, p. 35-37. BAYFIELD-COUNTY; BLACK RIVER; COPPER HARBOR CONGLOMERATE; DAVIS HILL; DISCONFORMITY; FAULTS; JACOBSVILLE-SANDSTONE; LAKE-GOGEBIC; MICHIGAN; MONTREAL-RIVER; ORONTO-GROUP; PORTAGE LAKE VOLCANICS; SOUTH RANGE; STRATIGRAPHY; STRUCTURAL-GEOLOGY; STURGEON FALLS; UNCONFORMITY; UNITED-STATES; UPPER-PENINSULA; VOLCANIC ROCKS; WISCONSIN;

---, 1971, Keweenawan geology of the Porcupine mountains, western Upper Peninsula, Michigan [abs.]: 17th Annual Institute on Lake Superior Geology, Duluth, MN, v. 17, p. 30. CONGLOMERATE; COPPER HARBOR CONGLOMERATE; FAULTS; FOLDS; GEOLOGY; IGNEOUS- ROCKS; MICHIGAN; ORONTO-GROUP; PORCUPINE MOUNTAINS; SEDIMENTARY-ROCKS; SEDIMENTS; STRATIGRAPHY; STRUCTURAL-GEOLOGY; TECTONICS; UNITED-STATES; VOLCANIC ROCKS;

---, 1972, Sources of pebbles of volcanic rocks in the middle and upper Keweenawan conglomerate of northern Michigan: Journal of Geology, v. 80, p. 627-629. COMPOSITION; CONGLOMERATE; COPPER HARBOR CONGLOMERATE; FELSITE; FREDA-SANDSTONE; MICHIGAN; NONESUCH SHALE; ORONTO-GROUP; PEBBLES; RHYOLITE; SANDSTONE; SEDIMENTARY-ROCKS; SEDIMENTS; UNITED-STATES; UPPER-PENINSULA; VOLCANIC ROCKS;

---, 1975, Geology of Porcupine Mountains in Carp River and White Pine quadrangles, Michigan: U.S. Geological Survey Journal of Research, v. 3, no. 5, p. 519-528. BAYFIELD-GROUP; CARP RIVER QUADRANGLE; COPPER; COPPER HARBOR CONGLOMERATE; FOLDS; FREDA- SANDSTONE; LITHOSTRATIGRAPHY; METAMORPHISM; METAVOLCANIC-ROCKS; MICHIGAN; MICHIGAN COPPER DISTRICT; NONESUCH SHALE; ONTONAGON; ONTONAGON-COUNTY; ORONTO-GROUP; PORCUPINE MOUNTAINS; SANDSTONE; SEDIMENTARY-ROCKS; SEDIMENTS; STRATIGRAPHY; STRUCTURAL-GEOLOGY; TECTONICS; UNITED-STATES; UPPER- PENINSULA; VOLCANIC ROCKS; WHITE PINE MINE; WHITE PINE QUADRANGLE;

---, 1975, Lower Keweenawan volcanic rocks of Michigan and Wisconsin: U.S. Geological Survey Journal of Research, v. 3, no. 5, p. 529-541. ASHLAND COUNTY; BAYFIELD-COUNTY; GOGEBIC-COUNTY; IRON-COUNTY; KALLANDER-CREEK FORMATION; METAMORPHIC- ROCKS; MICHIGAN; ONTONAGON-COUNTY; PORTAGE LAKE VOLCANICS; POWDER MILL GROUP; SEDIMENTARY-ROCKS; SEDIMENTS; SIEMENS CREEK FORMATION; STRATIGRAPHY; UNITED-STATES; UPPER-PENINSULA; WISCONSIN;

---, 1975, Keweenawan geology of the North Ironwood, Ironwood and Little Girls Point quadrangles, Gogebic County, Michigan:, U. S. Geological Survey, Open-file Report 75-152, 23 p. GEOLOGY; GOGEBIC-COUNTY; IRONWOOD QUADRANGLE; LITTLE GIRLS POINT QUADRANGLE; MICHIGAN; NORTH IRONWOOD QUADRANGLE; UNITED-STATES; UPPER-PENINSULA;

Hubbard, T. P., 1971, An investigation of the Keweenawan magnetic field intensity using regionally hydrothermally altered lavas [Ph.D. Dissertation]: University of Liverpool, Liverpool, England ALTERATION; GEOPHYSICS; HYDROTHERMAL; MAGNETICS; VOLCANIC ROCKS;

Hubbard, T. P., and Ade-Hall, J. M., 1972, Intensity of the geomagnetic field during the extrusion of the Keweenawan lavas [abs.]: Geological Society of America Abstracts with Programs, v. 4, p. 546. GEOPHYSICS; PALEOMAGNETISM; PROTEROZOIC;

Huber, N. K., 1967, Block faulting on Isle Royale in Lake Superior, in Geological Survey Research, 1967:, U. S. Geological Survey, Professional Paper 575-A, p. A76. FAULTS; ISLE ROYALE; KEWEENAW COUNTY; MICHIGAN; STRUCTURAL-GEOLOGY; UNITED-STATES; UPPER- PENINSULA;

---, 1969, Pink copper-bearing prehnite from Isle Royale National Park, Michigan, in: U. S. Geological Survey, Professional Paper 650-D, p. D63-D68. COPPER; ISLE ROYALE; ISLE ROYALE NATIONAL PARK; KEWEENAW COUNTY; MICHIGAN; MINERAL CHEMISTRY; MINERALOGY; PREHNITE; UNITED-STATES;

---, 1971, The Keweenawan geology of Isle Royale, Michigan [abs.]: 17th Annual Institute on Lake Superior Geology, Duluth, MN, v. 17, p. 31. CONGLOMERATE; COPPER HARBOR CONGLOMERATE; DISTRIBUTION; GEOLOGY; IGNEOUS-ROCKS; ISLE ROYALE; LITHOFACIES; MICHIGAN; ORONTO-GROUP; PORTAGE LAKE VOLCANICS; SEDIMENTARY-ROCKS; SEDIMENTS; STRATIGRAPHY; UNITED-STATES; UPPER-PENINSULA; VOLCANIC ROCKS;

---, 1971, Pink copper-bearing prehnite from Isle Royale National Park, Michigan: Earth Science, v. 24, no. 1, p. 9-14. COPPER; ISLE ROYALE; ISLE ROYALE NATIONAL PARK; MICHIGAN; MINERALOGY; NATIVE COPPER; PREHNITE; UNITED-STATES; UPPER-PENINSULA;

---, 1972, Keweenawan geology of Isle Royale, Michigan [abs.]: Geological Society of America Abstracts with Programs, v. 4, p. 546. GEOLOGY; ISLE ROYALE; KEWEENAW COUNTY; MICHIGAN; UNITED-STATES; UPPER-PENINSULA;

---, 1973, Geologic map of the Isle Royale National Park, Keweenaw County, Michigan: U. S. Geological Survey, Miscellaneous Investigation, Map I-796. GEOLOGY; ISLE ROYALE; KEWEENAW COUNTY; MAP; MICHIGAN; UNITED-STATES;

81 ---, 1973, The Portage Lake volcanics (middle Keweenawan) on Isle Royale, Michigan:, U. S. Geological Survey, Professional Paper 754-C, 32 p. ISLE ROYALE; KEWEENAW COUNTY; MICHIGAN; PORTAGE LAKE; PORTAGE LAKE VOLCANICS; UNITED-STATES; UPPER- PENINSULA; VOLCANIC;

---, 1975, The geologic story of Isle Royale National Park:, U. S. Geological Survey, Bulletin 1309, 66 p. COPPER; GEOLOGY; ISLE ROYALE; ISLE ROYALE NATIONAL PARK; KEWEENAW COUNTY; MICHIGAN; MICHIGAN COPPER DISTRICT; MINING; PORTAGE LAKE VOLCANICS; UNITED-STATES; UPPER-PENINSULA; VOLCANIC ROCKS;

---, 1983, The geologic story of Isle Royale National Park:, U. S. Geological Survey, Bulletin 1039, 66 p. GEOLOGY; GLACIAL GEOLOGY; ISLE ROYALE; ISLE ROYALE NATIONAL PARK; KEWEENAW COUNTY; MICHIGAN; UNITED-STATES; VOLCANIC ROCKS;

Hunt, T. S., 1873, The geognostical history of metals: Transactions of the Institute of Mining Engineers, v. 1, p. 33-345. ANIMIKIE; BISMUTH; CANADA; CHROMIUM; COPPER; DISTRICT OF THUNDER BAY; EMERY; ESSEX COUNTY; GOLD; HYDROTHERMAL; IRON; IRON ORE; IRON-FORMATION; LAKE SUPERIOR; LEAD; LOWER-PROTEROZOIC; MAINE; MASSACHUSETTS; MICHIGAN; MICHIGAN COPPER DISTRICT; MINERALIZATION; MISSISSIPPI VALLEY TYPE; NEVADA; NEW BRUNSWICK; NEW ENGLAND; NEW HAMPSHIRE; NEW JERSEY; NEW YORK; NORTH CAROLINA; NOVA SCOTIA; ONTARIO; ORIGIN; QUEBEC; SILVER; SILVER ISLET; STRATABOUND; STRATIGRAPHY; TENNESSEE; TIN; TITANIUM; UNITED-STATES; UPPER-MICHIGAN; VEINS; VERMONT; VIRGINIA; VMS; VOLCANOGENIC MASSIVE SULFIDES; WHITE MOUNTAINS; WYOMING; ZINC;

Hunzicker, A. A., 1929, A study of a section of the Middle Keweenawan series in Douglas County, Wisconsin by core drilling [B.A. Thesis]: University of Wisconsin, Madison, 7 p. DOUGLAS-COUNTY; DRILL HOLE; DRILLING; GEOLOGY; UNITED-STATES; WISCONSIN;

Hutchinson, D. R., Lee, M. W., Behrendt, J. C., Cannon, W. F., and Green, A. G., 1989, True-amplitude processing of GLIMPCE seismic reflection data; interpretation [abs.]: Eos (American Geophysical Union Transactions), v. 70, no. 15, p. 278. CANADA; DISTRICT OF ALGOMA; DISTRICT OF THUNDER BAY; GEOPHYSICS; GLIMPCE; LAKE SUPERIOR; MICHIGAN; MINNESOTA; MOHO; ONTARIO; PROCESSING; REFLECTION; SEISMIC; SEISMIC LINE A; SEISMIC LINE B; SEISMIC LINE C; SEISMIC LINE F; SEISMIC-SURVEYS; UNITED-STATES; WISCONSIN;

---, 1992, Variations in the reflectivity of the Moho transition zone beneath the Midcontinent Rift System of North America--Results from true amplitude analysis of GLIMPCE data: Journal of Geophysical Research, v. 97, p. 4721-4737. CANADA; GEOPHYSICS; GLIMPCE; MOHO; ONTARIO; REFLECTION; SEISMIC; SEISMIC-SURVEYS; UNITED-STATES;

Hutchinson, D. R., Lee, M. W., Behrendt, J. C., Cannon, W. F., Trehu, A. M., Green, A. G., and Milkereit, B., 1989, Structure and evolution of North American Midcontinent Rift System from GLIMPCE deep seismic data [abs.]: 28th International Geological Congress, Abstracts, v. 28, p. 2.88. CANADA; DISTRICT OF ALGOMA; DISTRICT OF THUNDER BAY; EVOLUTION; GEOPHYSICS; GLIMPCE; LAKE SUPERIOR; MICHIGAN; MINNESOTA; ONTARIO; SEISMIC; SEISMIC-SURVEYS; STRUCTURAL-GEOLOGY; UNITED-STATES; WISCONSIN;

Hutchinson, D. R., and White, R. S., 1989, Origin of the Midcontinent rift: A Keweenawen hotspot [abs.]: Eos (American Geophysical Union Transactions), v. 70, no. 15, p. 275. ASTHENOSPHERE; GEOPHYSICS; GLIMPCE; GRAVITY; HOTSPOT; MANTLE; MODELLING; ORIGIN; RIFTING; SEISMIC; SEISMIC-SURVEYS; TEMPERATURE;

Hutchinson, D. R., White, R. S., Cannon, W. F., and Schulz, K. J., 1990, Keweenaw hot spot: Geophysical evidence for a 1.1-Ga mantle plume beneath the Midcontinent Rift System: Journal of Geophysical Research, v. 95, p. 10869-10884. GEOPHYSICS; HOTSPOT; MANTLE; PLATE TECTONICS; PLUME; RIFTING;

Hutchinson, D. R., White, R. S., Schulz, K. J., and Cannon, W. F., 1989, Keweenaw hot spot. A Proterozoic mantle plume beneath the Mid-continent Rift System of North America [abs.]: Eos (American Geophysical Union Transactions), v. 70, p. 1357. HOTSPOT; MANTLE; PLATE TECTONICS; PLUME; RIFTING;

Ikola, R. J., 1968, Simple Bouguer gravity map of southern part of Duluth Complex and adjacent areas, Minnesota: Minnesota Geological Survey, Miscellaneous Map Series, Map M-4, scale 1:125,000. ANIMIKIE; ANIMIKIE BASIN; BARDON PEAK; DULUTH COMPLEX; DULUTH LAYERED SERIES; FOND DU LAC FORMATION; GEOPHYSICS; GRAVITY; LAYERED INTRUSION; MINNESOTA; ST. LOUIS COUNTY; UNITED-STATES;

---, 1968, Simple Bouguer gravity map of Minnesota, Hibbing sheet: Minnesota Geological Survey, Miscellaneous Map Series, Map M-3, scale 1:250,000. ARCHEAN; DULUTH COMPLEX; GEOPHYSICS; GRAVITY; GREENSTONE BELTS; HIBBING 2 DEGREE QUADRANGLE; LAYERED INTRUSION; MAP; MINNESOTA; ST. LOUIS COUNTY; UNITED-STATES; VERMILION DISTRICT;

---, 1969, Simple Bouguer gravity map of Minnesota, Two Harbors sheet: Minnesota Geological Survey, Miscellaneous Map Series, Map M-9, scale 1:250,000. DULUTH COMPLEX; GEOPHYSICS; GRAVITY; LAKE COUNTY; LAYERED INTRUSION; MAP; MINNESOTA; NORTH SHORE VOLCANIC GROUP; UNITED-STATES; VOLCANIC ROCKS;

Imbus, S. W., 1990, Organic petrologic and geochemical studies on the Oronto Group Nonesuch Formation (middle Proterozoic) of the Midcontinent Rift system, northern Wisconsin and Upper Peninsula Michigan [Ph.D. Dissertation]: University of Oklahoma, Norman, 393 p. CARBON; CARBON ISOTOPES; GEOCHEMISTRY; ISOTOPES; MICHIGAN; NITROGEN; NITROGEN ISOTOPES; NONESUCH SHALE; NORTHERN- WISCONSIN; ORGANIC GEOCHEMISTRY; ORGANIC-MATERIALS; ORONTO-GROUP; PETROLOGY; RATIOS; SEDIMENTARY-ROCKS; SEDIMENTS; STABLE-ISOTOPES; SULFUR ISOTOPES; UNITED-STATES; UPPER-PENINSULA; WISCONSIN;

Imbus, S. W., Engel, M. H., Elmore, R. D., and Maynard, R. J., 1989, Organic geochemical, petrographic and sedimentologic analysis of selected North American Proterozoic units [abs.]: Geological Society of America Abstracts with Programs, v. 21, no. 6, p. 10. ARIZONA; BELT-

82 SUPERGROUP; BIG COTTONWOOD FORMATION; CLASTIC-ROCKS; DRIPPING SPRING QUARTZITE; GEOCHEMISTRY; MINERAL FORK FORMATION; MONTANA; NONESUCH SHALE; ORGANIC GEOCHEMISTRY; ORGANIC-MATERIALS; ORONTO-GROUP; PETROLOGY; RED PINE SHALE FORMATION; SEDIMENTARY-PETROLOGY; SEDIMENTARY-ROCKS; SEDIMENTOLOGY; SEDIMENTS; UNITED-STATES;

Imbus, S. W., Engel, M. H., Elmore, R. D., and Zumberge, J. E., 1988, The origin, distribution and hydrocarbon generation potential of organic-rich facies in the Nonesuch Formation, central North American Rift system: A regional study: Organic Geochemistry, v. 13, p. 207-219. CARBON; CARBON ISOTOPES; CLASTIC-ROCKS; DISTRIBUTION; ECONOMIC GEOLOGY; GENESIS; GEOCHEMISTRY; HYDROCARBONS; LITHOLOGY; MICHIGAN; NONESUCH SHALE; ORGANIC-MATERIALS; ORONTO-GROUP; PETROLEUM; SEDIMENTARY-ROCKS; SEDIMENTS; SOURCE-ROCKS; UNITED-STATES; WISCONSIN;

Imbus, S. W., Galvez, A., Elmore, R. D., and Engel, M. H., 1990, Stable isotope (C,S,N) and molecular studies on the Precambrian Nonesuch Shale; evidence for organic productivity/preservation rates, environment and hydrothermal influence [abs.]: Geological Society of America Abstracts with Programs, v. 22, no. 7, p. 101-102. CARBON ISOTOPES; DEPOSITION; ENVIRONMENTAL-ANALYSIS; GEOCHEMISTRY; HYDROTHERMAL; ISOTOPES; MICHIGAN; NITROGEN ISOTOPES; NONESUCH SHALE; ORGANIC GEOCHEMISTRY; ORONTO- GROUP; SEDIMENTARY-ROCKS; SEDIMENTS; STABLE-ISOTOPES; SULFUR ISOTOPES; UNITED-STATES; UPPER-PENINSULA; WISCONSIN;

Imbus, S. W., Macko, S. A., Elmore, R. D., and Engel, M. H., 1992, Stable isotope (C, S, N) and molecular studies on the Precambrian Nonesuch Shale (Wisconsin-Michigan, U.S.A.); evidence for differential preservation rates, depositional environment and hydrothermal influence: Chemical Geology, v. 101, no. 3-4, p. 25. ASHLAND COUNTY; BAYFIELD-COUNTY; CARBON ISOTOPES; EXPERIMENTAL STUDIES; GEOCHEMISTRY; HOUGHTON-COUNTY; HYDROTHERMAL; ISOTOPES; MICHIGAN; NITROGEN ISOTOPES; NONESUCH SHALE; ONTONAGON- COUNTY; ORGANIC-MATERIALS; ORONTO-GROUP; PYROLYSIS; SEDIMENTARY-ROCKS; SEDIMENTS; SHALE; STABLE-ISOTOPES; SULFUR; SULFUR ISOTOPES; UNITED-STATES; WISCONSIN;

Imbus, S. W., Milavec, G. J., Elmore, R. D., and Engle, M. H., 1986, Sedimentologic and organic geochemical characterization of the Precambrian Nonesuch Shale, central North American rift system [abs.]: Geological Society of America Abstracts with Programs, v. 18, no. 6, p. 643. GEOCHEMISTRY; MICHIGAN; NONESUCH SHALE; ORGANIC GEOCHEMISTRY; ORGANIC-MATERIALS; ORONTO-GROUP; REGRESSION; RIFT-ZONES; SEDIMENTARY-PETROLOGY; SEDIMENTARY-ROCKS; SEDIMENTS; SILTSTONE; TRANSGRESSION; UNITED-STATES; WISCONSIN;

Imbus, S. W., Engel, M. H., and Elmore, R. D., 1990, Organic geochemistry and sedimentology of middle Proterozoic Nonesuch Formation; hydrocarbon source rock assessment of a lacustrine rift deposit, in Katz, B. J., ed., Lacustrine basin exploration - Case studies and modern analogs:, American Association of Petroleum Geologists, Memoir 50, p. 197-208. ECONOMIC GEOLOGY; GEOCHEMISTRY; HYDROCARBONS; LACUSTRINE; METAMORPHIC-ROCKS; METASEDIMENTARY-ROCKS; MICHIGAN; NONESUCH SHALE; ORGANIC-MATERIALS; ORONTO-GROUP; PETROLEUM; SEDIMENTARY-ROCKS; SEDIMENTS; SOURCE-ROCKS; UNITED-STATES; UPPER-WISCONSIN;

INCO, 1975, Description of operating concepts required to establish preoperational monitoring for INCO's proposed Spruce Road project:, Minnesota Department of Natural Resources, Division of Minerals, Open-File Report, COPPER; DULUTH COMPLEX; ENVIRONMENT; LAKE COUNTY; LAYERED INTRUSION; MINERAL DEPOSIT; MINERALIZATION; MINNESOTA; NICKEL; SOUTH KAWISHIWI INTRUSION; SPRUCE ROAD; SULFIDE; SULFIDES; UNITED-STATES;

Ingall, E. D., 1887, Report on mines and mining on Lake Superior. Part 1:, Canada Geological and Natural History Survey, Annual Report, 124 p. AMETHYST; BARITE; CALCITE; CANADA; DISTRICT OF THUNDER BAY; FLUORITE; FRACTURES; LAKE SUPERIOR; MINERALIZATION; MINES; ONTARIO; ORE DEPOSIT; PARAGENESIS; QUARTZ; STRUCTURAL-GEOLOGY; VEINS;

Ingemansen, D. B., 1985, A trace element study of the contact relationships between the Partridge River troctolite and the Virginia Formation, Dunka Road deposit, northeastern Minnesota [B.S. Thesis]: Carleton College, Northfield, Minnesota, 29 p. DRILL HOLE; 26069; ANIMIKIE; ANIMIKIE GROUP; CONTACT METAMORPHISM; COPPER; DULUTH COMPLEX; DUNKA ROAD; GEOCHEMISTRY; LAYERED INTRUSION; LOWER-PROTEROZOIC; METAMORPHISM; MINERAL DEPOSIT; MINERALIZATION; MINNESOTA; MINOR ELEMENTS; NICKEL; ORE DEPOSIT; PARTRIDGE RIVER INTRUSION; PARTRIDGE RIVER TROCTOLITE SERIES; SEDIMENTARY-ROCKS; ST. LOUIS COUNTY; SULFIDE; SULFIDES; TRACE ELEMENTS ANALYSES; UNITED-STATES; VIRGINIA FORMATION;

Innes, M. J. S., 1960, Gravity and isostasy in northern Ontario and Manitoba, in: Publications of the Dominion Observatory, No. 21, p. 263-338. ALKALIC COMPLEX; ALKALINE; ALKALINE INTRUSION; ARCHEAN; CANADA; COLDWELL COMPLEX; DISTRICT OF THUNDER BAY; GEOPHYSICS; GRAVITY; MANITOBA; ONTARIO; PORT COLDWELL; PROTEROZOIC;

Irving, E., and McGlynn, J. C., 1976, Proterozoic magnetic stratigraphy and the tectonic evolution of Laurentia: Philosophical Transactions of the Royal Society of London, v. 280, p. 433-468. CANADA; COPPER HARBOR CONGLOMERATE; CORONATION GEOSYNCLINE; DISTRICT OF ALGOMA; DISTRICT OF THUNDER BAY; ELSONIAN OROGENY; EVOLUTION; FREDA-SANDSTONE; GEOPHYSICS; GRENVILLE OROGENY; HUDSONIAN OROGENY; LAURENTIA; LOGAN SILLS; MAGNETIC STRATIGRAPHY; MAMAINSE POINT FORMATION; MICHIGAN; MINNESOTA; NONESUCH SHALE; NORMAL POLARITY; NORTH SHORE VOLCANIC GROUP; ONTARIO; ORONTO- GROUP; OSLER GROUP; PALEOMAGNETISM; PORTAGE LAKE VOLCANICS; REVERSE POLARITY; SANDSTONE; TECTONICS; UNITED-STATES; UPPER-PENINSULA; VOLCANIC ROCKS;

Irving, R. D., 1874, On the age of the copper-bearing rocks of Lake Superior and on the westward continuation of the Lake Superior syncline: American Journal of Science, v. 8, p. 46-56. COPPER; LAKE SUPERIOR; LAKE SUPERIOR SYNCLINE; MICHIGAN; MINERALIZATION; STRUCTURAL-GEOLOGY; SYNCLINE; UNITED-STATES; UPPER-PENINSULA; WISCONSIN;

83 ---, 1880, Geology of the east Lake Superior district, in Chamberlin, T. C., ed., Geology of Wisconsin:, Wisconsin Geological and Natural History Survey, v. III, p. 53-238. ANIMIKIE; COPPER; IRON; IRON-FORMATION; LOWER-PROTEROZOIC; MICHIGAN; MINERAL DEPOSITS; MINERALIZATION; UNITED-STATES; UPPER-PENINSULA; WISCONSIN;

---, 1880, The mineral resources of Wisconsin: Transactions of the American Institute of Mining and Metallurgical Engineers, v. 8, p. 478-508. AMNICON RIVER; ASHLAND COUNTY; BAD RIVER; BLACK RIVER; BRICK CLAY; BRULE RIVER; CLAY; COPPER; DOUGLAS- COUNTY; GALENA FORMATION; GEOLOGY; IRON ORE; IRON-FORMATION; KAOLIN; LEAD; LOWER-PROTEROZOIC; MINERAL- RESOURCES; MONTREAL-RIVER; NUMAKAGON RIVER; RICHLAND COUNTY; SILVER; ST. CROIX RIVER; SUGAR RIVER; TRENTON-GROUP; UNITED-STATES; UPPER MISSISSIPPI VALLEY; VEINS; VERNON COUNTY; WISCONSIN; ZINC;

---, 1883, The copper-bearing rocks of Lake Superior:, U. S. Geological Survey, Monograph 5, 464 p. CLASTIC; COPPER; CREVICE; LAKE SUPERIOR; MICHIGAN; MICHIGAN COPPER DISTRICT; MINERAL DEPOSITS; MINERALIZATION; MINNESOTA; PINE-COUNTY; SEDIMENTARY-ROCKS; SEDIMENTOLOGY; UNITED-STATES; UPPER-PENINSULA;

---, 1883, Copper-bearing rocks of Lake Superior, in 3rd Annual Report:, U. S. Geological Survey, p. 89-188. COPPER; LAKE SUPERIOR; MICHIGAN; MINERALIZATION; UNITED-STATES; UPPER-PENINSULA; WISCONSIN;

Irving, R. D., and Chamberlin, T. C., 1885, Observations on the junction between eastern sandstone and Keweenaw series on Keweenaw Point, Lake Superior:, U. S. Geological Survey, Bulletin 23, 124 p. KEWEENAW COUNTY; KEWEENAW PENINSULA; KEWEENAW POINT; MICHIGAN; SANDSTONE; UNITED-STATES; UPPER-PENINSULA; VOLCANIC ROCKS;

Iwasaki, I., and Malicsi, A., 1976, Separation of copper-nickel from Duluth gabbro by a differential flotation-matte smelting-matte separation process: Minneapolis, Mineral Resources Research Center, University of Minnesota, Final Report to the U. S. Bureau of Mines, Grant No. GO144109, 145 p. BENEFICIATION; COPPER; DULUTH COMPLEX; FLOTATION; LAYERED INTRUSION; MATTE SEPARATION; METALLURGY; MINERAL PROCESSING; MINNESOTA; NICKEL; SMELTING; SULFIDE; SULFIDES; UNITED-STATES;

Iwasaki, I., Malicsi, A. S., and Lipp, R. J., 1978, Copper-nickel study, mineral processing studies-flotation tests: Minneapolis, Mineral Resources Research Center, University of Minnesota, Final Report To the Environmental Quality Board, 365 p. BENEFICIATION; COPPER; DULUTH COMPLEX; FLOTATION; LAYERED INTRUSION; METALLURGY; MINERAL PROCESSING; MINNESOTA; NICKEL; REGIONAL COPPER-NICKEL STUDY; SULFIDE; SULFIDES; UNITED-STATES;

---, 1984, Byproduct recovery from copper-nickel bearing Duluth Gabbro flotation tailings: Transactions of the Society of Mining Engineering, v. 276, p. 1823-1829. BENEFICIATION; COPPER; DULUTH COMPLEX; FLOTATION; LAYERED INTRUSION; METALLURGY; MINERAL PROCESSING; MINNESOTA; NICKEL; SULFIDE; SULFIDES; UNITED-STATES;

Iwasaki, I., Nakazawa, H., Malicsi, A. S., and Li, X. W., 1988, Recovery of platinum-group metals from gabbroic rocks: Journal of Metals, v., p. 36- 39. BENEFICIATION; BIRCH LAKE; DULUTH COMPLEX; LAYERED INTRUSION; METALLURGY; MINERAL PROCESSING; MINNESOTA; PGM; PLATINUM-GROUP METALS; SOUTH KAWISHIWI INTRUSION; ST. LOUIS COUNTY; UNITED-STATES;

Iwasaki, I., Weiblen, P. W., Reid, K. J., Ryan, P. J., Nakazawa, H., and Malicsi, A. S., 1983, Platinum group and arsenide minerals in copper-nickel sulfide bearing Duluth gabbro and their flotation recoveries: Transactions of the American Institute of Mining and Metallurgical Engineers, v. 280, p. 1983-1988. ARSENIDES; BENEFICIATION; CHALCOPYRITE; COPPER; DULUTH COMPLEX; FLOTATION; LAYERED INTRUSION; MINERAL PROCESSING; MINERALOGY; MINNESOTA; NICKEL; OXIDATION; PENTLANDITE; PGE; PGM; PLATINUM-GROUP ELEMENTS; PLATINUM-GROUP MINERALS; PRECIOUS METALS; PYRRHOTITE; SULFIDES; UNITED-STATES;

---, 1986, Platinum group and arsenide minerals in copper-nickel sulfide bearing Duluth gabbro and their flotation recoveries: Transactions of the American Institute of Mining and Metallurgical Engineers, v. 280, p. 1983-1988. ARSENIDES; BENEFICIATION; CHALCOPYRITE; COPPER; CUBANITE; DULUTH COMPLEX; FLOTATION; LAYERED INTRUSION; MAUCHERITE; MINERAL PROCESSING; MINERALIZATION; MINERALOGY; MINNESOTA; NICCOLITE; NICKEL; PENTLANDITE; PGE; PGM; PLATINUM-GROUP ELEMENTS; PLATINUM-GROUP MINERALS; PYRRHOTITE; SPERRYLITE; SULFIDES; UNITED-STATES;

Jacobsen, S. I., 1978, The geochemistry of peat bogs over different bedrock types, Houghton County, Michigan [M.S. Thesis]: Michigan Technological University, Houghton ANALYSIS; BEDROCK; COPPER HARBOR CONGLOMERATE; FREDA-SANDSTONE; GEOCHEMISTRY; HOUGHTON-COUNTY; JACOBSVILLE-SANDSTONE; MICHIGAN; NONESUCH SHALE; ORGANIC-SEDIMENTS; ORONTO-GROUP; PEAT; PORTAGE LAKE VOLCANICS; SANDSTONE; SEDIMENTARY-ROCKS; SEDIMENTS; UNITED-STATES; UPPER-PENINSULA;

Jacobson, S. I., 1976, The trace element geochemistry of peat bogs over different bedrock types, southern Houghton County, Michigan [abs.]: 22nd Annual Institute on Lake Superior Geology, St. Paul, MN, v. 22, p. 32. BIOGEOCHEMISTRY; COPPER HARBOR CONGLOMERATE; EXPLORATION; FREDA-SANDSTONE; GEOCHEMISTRY; HOUGHTON-COUNTY; JACOBSVILLE-SANDSTONE; MICHIGAN; NONESUCH SHALE; ORONTO-GROUP; PEAT; PORTAGE LAKE VOLCANICS; UNITED-STATES; UPPER-PENINSULA;

Jago, B. C., 1980, Geology of a portion of the western contact margin: the Coldwell Complex [B.Sc. Thesis]: Lakehead University, Thunder Bay, Ontario, Canada, 98 p. ALKALIC COMPLEX; ALKALINE; ALKALINE INTRUSION; CANADA; COLDWELL COMPLEX; DISTRICT OF THUNDER BAY; GEOLOGY; ONTARIO; PORT COLDWELL; PROTEROZOIC;

Jahanbagloo, I. C., and Zoltai, T., 1968, The crystal structure of a hexagonal Al-serpentine: American Mineralogist, v. 53, p. 14-24. CRYSTAL; ELECTRON-MICROSCOPY; MINERALOGY; MINNESOTA; NORTH SHORE VOLCANIC GROUP; RHYOLITE; SERPENTINE; UNITED- STATES;

84 Jahrein, C. E., 1965, Magnetization of Keweenawan rocks near Duluth, Minnesota: Geophysics, v. 30, p. 858. DULUTH; GEOPHYSICS; MINNESOTA; PALEOMAGNETISM; ST. LOUIS COUNTY; UNITED-STATES;

Jahren, C. E., 1960, Magnetizations of iron-formations and igneous rocks of northern Minnesota [abs.]: 6th Annual Institute on Lake Superior Geology, Madison, WI, v. 6, p. 28. ARCHEAN; DIABASE; DULUTH COMPLEX; GEOPHYSICS; GIANTS RANGE; GIANTS RANGE BATHOLITH; GREENSTONE BELTS; IRON-FORMATION; LOWER-PROTEROZOIC; MAGNETICS; MAGNETIZATION; MESABI RANGE; MINNESOTA; REMANENT-MAGNETIZATION; SOUDAN IRON-FORMATION; UNITED-STATES; VERMILION DISTRICT;

---, 1965, Magnetization of Keweenawan rocks near Duluth, Minnesota: Geophysics, v. 30, no. 5, p. 858-874. BABBITT; BARDON PEAK; BASALT; BEAVER BAY COMPLEX; BEAVER RIVER DIABASE; DIABASE; DIKES; DULUTH; DULUTH COMPLEX; DULUTH LAYERED SERIES; GEOPHYSICS; GRANOPHYRE; LAKE COUNTY; MAGNETIC SUSCEPTIBILITY; MAGNETIZATION; MINNESOTA; NORTH SHORE VOLCANIC GROUP; PALEOMAGNETISM; PALEOPOLE; PARTRIDGE RIVER INTRUSION; REMANENT-MAGNETIZATION; ST. LOUIS COUNTY; UNITED-STATES;

Janse, A. J. A., Downie, I. F., Reed, L. E., and Sinclair, I. G. L., 1989, Alkaline intrusions in the Hudson Bay Lowlands, Canada: Exploration methods, petrology and geochemistry, in Ross, J., ed., Kimberlites and related rocks: Their mantle/crust setting, diamonds and diamond exploration: Oxford, Blackwell Scientific Publications, Geological Society of Australia Special Publication No. 2, v. 2, p. 1192-1203. AEROMAGNETIC SURVEY; AEROMAGNETICS; AGE DATING; ALKALINE; ALKALINE INTRUSION; ALNÖITE; CANADA; CARBONATITE; DIAMONDS; DIATREME; EXPLORATION; GEOCHEMISTRY; GEOCHRONOLOGY; GEOPHYSICS; GROUND MAGNETOMETER SURVEY; HUDSON BAY LOWLANDS; KIMBERLITES; MAJOR ELEMENT ANALYSES; MESOZOIC; ONTARIO; PHANEROZOIC; POTASSIUM-ARGON; PYROCLASTIC; RARE-EARTH ELEMENTS; REE; TUFF; WHOLE ROCK ANALYSES; XENOCRYSTS; XENOLITHS;

Jefferson, T. J., Karl, J. H., and Meyer, P. J., 1989, A model of the velocity distribution across the Midcontinent Rift: GLIMPCE line A [abs.]: Eos (American Geophysical Union Transactions), v. 70, no. 15, p. 274. BASEMENT; CANADA; CRUST; GEOPHYSICS; GLIMPCE; ISLE ROYALE FAULT; KEWEENAW FAULT; LAKE SUPERIOR; MODELLING; MOHO; ONTARIO; REFLECTION; SEISMIC; SEISMIC LINE A; SEISMIC- SURVEYS; UNITED-STATES; VELOCITY; VOLCANIC ROCKS; WIDE ANGLE;

Jennings, E. A., 1986, A survey of the Mainland and Island Belts, Thunder Bay silver district, Ontario: Fluid inclusions, mineralogy, and sulfur isotopes [M.Sc. Thesis]: Lakehead University, Thunder Bay, Ontario, 159 p. CANADA; DISTRICT OF THUNDER BAY; ECONOMIC GEOLOGY; FLUID INCLUSIONS; ISLAND BELT; MAINLAND BELT; MINERALOGY; ONTARIO; ORE-DEPOSITS; SILVER; STABLE- ISOTOPES; SULFUR ISOTOPES;

Jensen, M. L., 1959, Sulfur isotopes and hydrothermal mineral deposits: Economic Geology, v. 54, p. 383. ANALYTICAL TECHNIQUES; CANADA; DISTRICT OF SUDBURY; DULUTH COMPLEX; HYDROTHERMAL; LAYERED INTRUSION; LOWER-PROTEROZOIC; MELLEN COMPLEX; MINERAL DEPOSITS; MINNESOTA; ONTARIO; SUDBURY IGNEOUS COMPLEX; SUDBURY STRUCTURE; SULFUR ISOTOPES; UNITED-STATES; WISCONSIN;

Jerde, E. A., 1989, Hypabyssal rocks of the North Shore of Lake Superior: Evidence for polybaric fractionation in the Midcontinent Rift [abs.]: 35th Annual Institute on Lake Superior Geology, Duluth, MN, v. 35, p. 34-36. DULUTH; DULUTH COMPLEX; ENDION SILL; GEOCHEMISTRY; HYPABYSSAL; LAYERED INTRUSION; MINNESOTA; ST. LOUIS COUNTY; UNITED-STATES;

---, 1990, Reverse zonation in the Lester River sill, Duluth, Minnesota, and evidence for polybaric fractionation [abs.]: 36th Annual Institute on Lake Superior Geology, Thunder Bay, ONT, v. 36, p. 34-36. DULUTH; DULUTH COMPLEX; FRACTIONATION; GEOCHEMISTRY; IGNEOUS PROCESS; LAYERED INTRUSION; LESTER RIVER; LESTER RIVER SILL; MINNESOTA; POLYBARIC FRACTIONATION; SILLS; ST. LOUIS COUNTY; UNITED-STATES;

---, 1991, Geochemistry and petrology of hypabyssal rocks associated with the Midcontinent Rift, northeastern Minnesota [Ph.D. Dissertation]: University of California, Los Angeles, 305 p. DULUTH; DULUTH COMPLEX; ENDION SILL; GEOCHEMISTRY; HYPABYSSAL; LAYERED INTRUSION; MAJOR ELEMENTS; MINERAL CHEMISTRY; MINNESOTA; PETROLOGY; RARE-EARTH ELEMENTS; REE; ST. LOUIS COUNTY; TRACE ELEMENTS ANALYSES; UNITED-STATES; WHOLE ROCK ANALYSES;

---, 1991, Magmatic evolution in the Midcontinent Rift: Evidence from hypabyssal rocks of the North Shore of Lake Superior [abs.]: 37th Annual Institute on Lake Superior Geology, Eau Claire, WI, v. 37, p. 59-61. EVOLUTION; GEOCHEMISTRY; LAKE SUPERIOR; MAGMATIC; MINNESOTA; ST. LOUIS COUNTY; UNITED-STATES;

Jessberger, E. K., and Ostertag, R., 1982, Shock-effects on the K-Ar system of plagioclase feldspar and the age of anorthosite inclusions from north- eastern Minnesota: Geochimica et Cosmochimica Acta, v. 46, p. 1465-1471. 40AR/39AR; AGE; AGE DATING; ANORTHOSITE; ARGON- ARGON; BEAVER BAY COMPLEX; CANADA; DULUTH COMPLEX; GEOCHRONOLOGY; LABRADOR; LAYERED INTRUSION; MINNESOTA; NAIN; PLAGIOCLASE; POTASSIUM-ARGON; UNITED-STATES;

Jessop, A. M., and Lewis, T., 1978, Heat flow and heat generation in the Superior Province of the Canadian Shield: Tectonophysics, v. 50, p. 55-77. ARCHEAN; CANADA; CANADIAN SHIELD; DISTRICT OF THUNDER BAY; GEOPHYSICS; GREENSTONE BELTS; HEAT-FLOW; ONTARIO; SUPERIOR PROVINCE;

Jirsa, M. A., 1978, The petrology and tectonic significance of the interflow sediments in the Keweenawan North Shore Volcanic Group of northeastern Minnesota [abs.]: 24th Annual Institute on Lake Superior Geology, Milwaukee, WI, v. 24, p. 17. CLASTIC DIKE; COOK COUNTY; INTERFLOW SEDIMENTS; LAKE COUNTY; MINNESOTA; NORTH SHORE VOLCANIC GROUP; PALEOCURRENTS; PETROLOGY; PROVENANCE; SEDIMENTARY STRUCTURES; SEDIMENTARY-ROCKS; SEDIMENTS; ST. LOUIS COUNTY; UNITED-STATES;

85 ---, 1980, The petrology and tectonic significance of interflow sediments in the Keweenawan North Shore Volcanic Group of northeastern Minnesota [M.S. Thesis]: University of Minnesota, Duluth, 125 p. CLASTIC-ROCKS; DIKES; FLUVIAL-ENVIRONMENT; HEAVY MINERALS; INTERFLOW SEDIMENTS; INTRUSIONS; MINNESOTA; NORTH SHORE VOLCANIC GROUP; PALEOGEOGRAPHY; SANDSTONE; SEDIMENTARY-PETROLOGY; SEDIMENTARY-ROCKS; SEDIMENTS; STRUCTURAL-GEOLOGY; TECTONICS; UNITED-STATES; VOLCANIC ROCKS;

---, 1984, Interflow sedimentary rocks in the Keweenawan North Shore Volcanic Group, northeastern Minnesota:, Minnesota Geological Survey, Report of Investigations 30, 20 p. INTERFLOW SEDIMENTS; MINNESOTA; NORTH SHORE VOLCANIC GROUP; SEDIMENTARY-ROCKS; UNITED-STATES; VOLCANIC ROCKS;

Jirsa, M. A., and Morey, G. B., 1987, Jay Cooke State Park and Grandview areas; evidence for a major early Proterozoic-middle Proterozoic unconformity in Minnesota, in Biggs, D. L., ed., Centennial Field Guide: Boulder, CO, Geological Society of America, North-Central Section, p. 67- 72. ANIMIKIE; ANIMIKIE BASIN; CARLTON COUNTY; FOND DU LAC FORMATION; GUIDEBOOK; INTERPRETATION; JAY COOKE STATE PARK; LITHOSTRATIGRAPHY; LOWER-PROTEROZOIC; METAMORPHIC-ROCKS; MINNESOTA; NORTHERN; SEDIMENTARY STRUCTURES; SEDIMENTARY-ROCKS; SEDIMENTS; ST. LOUIS COUNTY; STRATIGRAPHY; THOMSON FORMATION; THOMSON- SLATE; UNCONFORMITIES; UNITED-STATES;

Johns, R. B., Belsky, T., McGarthy, E. D., Burlingame, A. L., Haug, P., Schoes, H. K., Richter, W., and Calvin, M., 1966, The organic geochemistry of ancient sediments - Part II: Geochimica et Cosmochimica Acta, v. 30, p. 1191-1222. COPPER; GEOCHEMISTRY; MICHIGAN; MICHIGAN COPPER DISTRICT; NONESUCH SHALE; ONTONAGON-COUNTY; ORGANIC GEOCHEMISTRY; ORONTO-GROUP; UNITED-STATES; UPPER-PENINSULA; WHITE PINE MINE;

Johnson, A., Parker, B., Snider, D., and Van Alstine, J., 1980, Petrology of the Bear Lake intrusive, Keweenaw Peninsula, Michigan [abs.]: 26th Annual Institute on Lake Superior Geology, Eau Claire, WI, v. 26, p. 67. ALTERATION; BEAR LAKE INTRUSION; CLASTIC-SEDIMENTS; CLASTICS; COPPER; DRILL CORE; DRILL HOLE; DRILLING; FELSIC; FREDA-SANDSTONE; KEWEENAW PENINSULA; METASOMATISM; MICHIGAN; MINERALIZATION; NATIVE COPPER; ORONTO-GROUP; PETROLOGY; SULFIDES; UNITED-STATES; UPPER-PENINSULA;

Johnson, C. H., and Foster, R. L., 1965, Precambrian ash flow tuff, Cascade River, Minnesota [abs.], in: Geological Society of America, Special Paper 82, p. 102. ASH-FLOW TUFF; CASCADE RIVER; COOK COUNTY; INTERFLOW SEDIMENTS; MINNESOTA; NORTH SHORE VOLCANIC GROUP; TUFF; UNITED-STATES; VOLCANIC ROCKS;

Johnson, D. L., 1988, Geotechnical characterization of Keweenaw copper sulfides for in-situ solution mining [M.S. Thesis]: Michigan Technological University, Houghton COPPER; MICHIGAN; MICHIGAN COPPER DISTRICT; MINING; SOLUTION MINING; SULFIDES; UNITED- STATES; UPPER-PENINSULA;

Johnson, R. C., 1985, Documentation of a subaqueously emplaced volcanic horizon in the Upper Portage Lake Volcanics, Keweenaw Peninsula, Michigan [abs.]: 31st Annual Institute on Lake Superior Geology, Kenora, ONT, v. 31, p. 38-39. KEWEENAW PENINSULA; MICHIGAN; PORTAGE LAKE VOLCANICS; SUBAQUEOUS; UNITED-STATES; UPPER-PENINSULA; VOLCANIC ROCKS;

Johnson, R. E., 1978, Preliminary mine planning for the MINNAMAX Project, in Proceedings of the 39th Annual Mining Symposium and 51st Annual Meeting, American Insitute of Mining and Metallurgical Engineers:, University of Minnesota, Minneapolis, Paper 20, p. 1-22. BABBITT; COPPER; DULUTH COMPLEX; LAYERED INTRUSION; MINE PLANNING; MINERAL DEPOSIT; MINERALIZATION; MINING; MINNAMAX; MINNESOTA; NICKEL; ORE DEPOSIT; PARTRIDGE RIVER INTRUSION; ST. LOUIS COUNTY; SULFIDE; SULFIDES; UNITED-STATES;

Johnson, R. F., and White, W. S., 1969, Preliminary report on the bedrock geology and copper deposits of the Matchwood quadrangle, Ontonagon County, Michigan:, U. S. Geological Survey, Open-File Report, BEDROCK; COPPER; GEOLOGY; MATCHWOOD QUADRANGLE; MICHIGAN; MICHIGAN COPPER DISTRICT; MINERALIZATION; ORE-DEPOSITS; UNITED-STATES; UPPER-MICHIGAN;

Johnson, R. G., 1968, Copper-nickel mineralization in the basal Duluth Gabbro Complex, northeastern Minnesota: A case study [M.S. Thesis]: University of Iowa, Iowa City, 91 p. ANIMIKIE; COOK COUNTY; COPPER; DULUTH COMPLEX; LAYERED INTRUSION; LOWER- PROTEROZOIC; MINERALIZATION; MINNESOTA; NATHAN'S LAYERED SERIES; NICKEL; ORE DEPOSIT; ROVE FORMATION; SULFIDES; UNITED-STATES;

---, 1970, Economic geology of a portion of the basal Duluth Complex, northeastern Minnesota [Ph.D. Dissertation]: University of Iowa, Iowa City, 136 p. ANIMIKIE; COOK COUNTY; COPPER; DULUTH COMPLEX; LAYERED INTRUSION; LOWER-PROTEROZOIC; MINNESOTA; NATHAN'S LAYERED SERIES; NICKEL; ORE DEPOSIT; ROVE FORMATION; SULFIDES; TUSCARORA INTRUSION; UNITED-STATES;

Johnson, R. L., 1973, The petrology, pebble morphology and origin of the Outer Conglomerate (Upper Member), Copper Harbor Conglomerate (Precambrian), Keweenaw Peninsula, Michigan [M.S. Thesis]: Michigan Technological University, Houghton CLASTIC-ROCKS; CLASTICS; CLASTICS-TERRIGENOUS; CLASTS; CONGLOMERATE; COPPER HARBOR CONGLOMERATE; KEWEENAW COUNTY; KEWEENAW PENINSULA; MICHIGAN; ORONTO-GROUP; OUTER-CONGLOMERATE; SEDIMENTARY-PETROLOGY; SEDIMENTARY-ROCKS; SEDIMENTS; TERRIGENOUS; UNITED-STATES;

Johnson, R. W., and Mengel, J. T., Jr., 1969, The geology of the South Range quadrangle, Douglas County, Wisconsin [abs.]: 15th Annual Institute on Lake Superior Geology, Oshkosh, WI, v. 15, p. 20. BARDON STATE PARK; COPPER; DIKE; DOUGLAS-COUNTY; DOUGLAS-FAULT; EXPLORATION; GABBRO; GEOLOGY; NATIVE COPPER; SOUTH RANGE QUADRANGLE; SULFIDES; UNITED-STATES; WISCONSIN;

Johnson, S. H., 1967, Seismic investigation of the midcontinent gravity high in southeastern Minnesota [M.S. Thesis]: University of Minnesota, Minneapolis, 118 p. GEOPHYSICS; MINNESOTA; SEISMIC; SEISMIC-SURVEYS; UNITED-STATES;

86 Johnson, S. H., and Farnham, P. R., 1967, Refraction seismic surveys of the Mid-Continent Gravity Anomaly in Minnesota and Wisconsin [abs.]: 13th Annual Institute on Lake Superior Geology, East Lansing, MI, v. 13, p. 24. DOUGLAS-FAULT; FAULTS; GEOPHYSICS; HORSTS; LAKE OWEN FAULT; MINNESOTA; RED CLASTICS; REFRACTION; SEDIMENTARY-ROCKS; SEISMIC; SEISMIC-SURVEYS; STRUCTURAL- GEOLOGY; UNITED-STATES; WISCONSIN;

Jolly, W. T., 1971, Zeolite and prehnite-pumpellyite facies in the Keweenawan basalts of northern Michigan II: The role of volatiles [abs.]: 17th Annual Institute on Lake Superior Geology, Duluth, MN, v. 17, p. 34. BASALTS; FRACTURES; KEWEENAW PENINSULA; METAMORPHISM; MICHIGAN; PREHNITE; PREHNITE-PUMPELLYITE FACIES; PUMPELLYITE; UNITED-STATES; UPPER-PENINSULA; VOLATILES; ZEOLITE; ZEOLITE-FACIES;

---, 1974, Behavior of Cu, Zn, and Ni during prehnite-pumpellyite rank metamorphism of the Keweenawan basalts, northern Michigan: Economic Geology, v. 69, p. 1118-1125. BASALT; COPPER; GEOCHEMISTRY; METAMORPHISM; MICHIGAN; MICHIGAN COPPER DISTRICT; NICKEL; PREHNITE-PUMPELLYITE FACIES; UNITED-STATES; UPPER-PENINSULA; VOLCANIC ROCKS; ZINC;

Jolly, W. T., and Smith, R. E., 1972, Degradation and metamorphic differentiation of the Keweenawan tholeiitic lavas of northern Michigan, U.S.A: Journal of Petrology, v. 13, p. 273-309. BASALT; METAMORPHISM; MICHIGAN; THOLEIITIC; THOLEIITIC BASALT; UNITED-STATES; UPPER-PENINSULA; VOLCANIC;

Jones, N. W., 1963, The relationship between the Duluth gabbro and the dikes and sills in the vicinity of Hovland, Minnesota [M.S. Thesis]: University of Minnesota, Minneapolis, 90 p. COOK COUNTY; DIKE; DULUTH COMPLEX; GEOLOGY; HOVLAND; LAYERED INTRUSION; LOGAN SILLS; MINNESOTA; PETROLOGY; SILLS; UNITED-STATES;

---, 1963, The relationships between the Duluth gabbro and the dikes and sills near Hovland, Minnesota [abs.]: 9th Annual Institute on Lake Superior Geology, Duluth, MN, v. 9, p. 10. COOK COUNTY; DIKES; DULUTH COMPLEX; HOVLAND; LAYERED INTRUSION; LOGAN SILLS; MINNESOTA; SILLS; UNITED-STATES;

---, 1975, A reconnaissance study of the Chipman Lake "Carbonatite Complex" [abs.]: 21st Annual Institute on Lake Superior Geology, Marquette, MI, v. 21, p. 8 ALKALINE; CANADA; CARBONATITE; DISTRICT OF ALGOMA; GEOLOGY; ONTARIO; PROTEROZOIC;

---, 1980, Petrology of some Logan diabase sills from Cook County, Minnesota [abs.]: 26th Annual Institute on Lake Superior Geology, Eau Claire, WI, v. 26, p. 29-30. COOK COUNTY; FELDSPARS; GEOCHEMISTRY; LOGAN SILLS; MINERAL CHEMISTRY; MINNESOTA; OLIVINE; OXIDES; PETROLOGY; PYROXENE; SILLS; SOUTH LAKE QUADRANGLE; UNITED-STATES;

---, 1984, Petrology of some Logan diabase sills, Cook County, Minnesota:, Minnesota Geological Survey, Report of Investigations 29, 44 p. COOK COUNTY; LOGAN SILLS; MINNESOTA; PETROLOGY; SILLS; UNITED-STATES;

Joralemon, I. B., 1959, The White Pine copper deposit: Economic Geology, v. 54, p. 1127. CHALCOCITE; COPPER; MICHIGAN; MICHIGAN COPPER DISTRICT; NATIVE COPPER; NONESUCH SHALE; ONTONAGON-COUNTY; ORONTO-GROUP; PARTING-SHALE; SANDSTONE; SILVER; STRUCTURAL-GEOLOGY; SYNGENETIC; UNITED-STATES; UPPER-PENINSULA; VEINS; WHITE PINE MINE;

---, 1963, Vein-wall rock relationships, White Pine Mine: Economic Geology, v. 59, p. 160-161. COPPER; MICHIGAN; MICHIGAN COPPER DISTRICT; MINE; NONESUCH SHALE; ONTONAGON-COUNTY; ORONTO-GROUP; UNITED-STATES; UPPER-PENINSULA; VEINS; WALLROCK; WHITE PINE MINE;

---, 1968, Environment of generation of some base metal ore deposits: Economic Geology, v. 63, p. 846-847. BRINES; CALIFORNIA; COPPER; ECONOMIC GEOLOGY; GENERAL; GENESIS; METALS; MICHIGAN; MINERAL DEPOSITS; NONESUCH SHALE; ORE FORMING FLUIDS; ORE-DEPOSITS; ORIGIN; ORONTO-GROUP; SEARLES-LAKE; SEDIMENTARY-ROCKS; SEDIMENTS; UNITED-STATES;

Jost, M., 1968, Microfossils of problematic systematic position from Precambrian rocks at White Pine, Michigan: Micropaleontology, v. 14, p. 365- 368. COPPER; COPPER HARBOR CONGLOMERATE; FOSSILS; MICHIGAN; MICHIGAN COPPER DISTRICT; MICROFOSSILS; MICROPALEONTOLOGY; NONESUCH SHALE; ONTONAGON-COUNTY; ORONTO-GROUP; PALEONTOLOGY; PROBLEMATIC; PROBLEMATIC-FOSSILS; SEDIMENTARY-ROCKS; SEDIMENTS; SHALE; UNITED-STATES; UPPER-PENINSULA; WHITE PINE MINE;

---, 1968, The White Pine copper district: Mineralogical investigation and genetic interpretation [Ph.D. Dissertation]: Johannes Gutenberg University, Mainz, Germany, 78 p. COPPER; GENESIS; MICHIGAN; MICHIGAN COPPER DISTRICT; MINERALOGY; NONESUCH SHALE; ONTONAGON-COUNTY; ORONTO-GROUP; UNITED-STATES; UPPER-PENINSULA; WHITE PINE MINE;

Jowett, E. C., and Cathles, L. M., III, 1990, Paleo-fluid penetration of shale seals as exemplified by stratiform Cu-Ag deposits [abs.]: V. M. Goldschmidt Conference, Baltimore, MD, May 2-4, 1990, Program and Abstracts. p. 57. CAP-ROCKS; CLASTIC; COPPER; COPPER-ORES; ECONOMIC GEOLOGY; EUROPE; FLUID-PHASE; KUPFERSCHIEFER; METAL-ORES; MICHIGAN; NONESUCH SHALE; ORONTO- GROUP; PALEOZOIC; PERMIAN; PHANEROZOIC; SEDIMENTARY-ROCKS; SEDIMENTS; SHALE; SILVER-ORES; STRATIFORM- DEPOSITS; UNITED-STATES; UPPER-PRECAMBRIAN;

Joyce, F. E., Jr., 1971, Extraction of copper and nickel from the Duluth Gabbro Complex by selective high-temperature sulfatation:, U. S. Bureau of Mines, Report of Investigations 7475, 15 p. COPPER; DULUTH COMPLEX; EXTRACTION; LAYERED INTRUSION; MINERAL PROCESSING; MINNESOTA; NICKEL; ROASTING; SULFATIZATION; TEMPERATURE; UNITED-STATES;

Juilland, J. D., 1965, Mineralization of the Mount Bohemia intrusive, Keweenaw County, Michigan [M.S. Thesis]: Michigan Technological University, Houghton COPPER; MICHIGAN; MICHIGAN COPPER DISTRICT; MINERALIZATION; MOUNT BOHEMIA; SULFIDES; UNITED-STATES; UPPER-PENINSULA;

87 Julin, D. E., 1975, Future developments in block caving, in Proceedings of the 36th Annual Mining Symposium and 48th Annual, Minnesota Section, American Institute of Mining and Metallurgical Engineers:, University of Minnesota, Minneapolis. BABBITT; BLOCK CAVING; COPPER; DULUTH COMPLEX; LAYERED INTRUSION; MINERAL DEPOSIT; MINING; MINING-METHODS; MINNAMAX; MINNESOTA; NICKEL; PARTRIDGE RIVER INTRUSION; ST. LOUIS COUNTY; UNITED-STATES;

Kalliokoski, J., 1974, Relationship between regional geology and fracture patterns, Precambrian section, Upper Peninsula of Michigan [abs.]: 20th Annual Institute on Lake Superior Geology, Sault Ste. Marie, ONT, v. 20, p. 17. ARCHEAN; DIABASE; DIKES; FRACTURES; GEOLOGY; JOINTS; KAPUSKASING STRUCTURAL ZONE; KEWEENAW FAULT; LINEAMENT; MICHIGAN; REGIONAL; STRESS; STRUCTURAL- GEOLOGY; UNITED-STATES; UPPER-PENINSULA; WOLF LAKE ANTICLINE;

---, 1975, Chemistry and mineralogy of Precambrian paleosols in north Michigan: Geological Society of America Bulletin, v. 86, p. 371-376. ARCHEAN; GEOCHEMISTRY; JACOBSVILLE-SANDSTONE; MICHIGAN; MINERALOGY; PALEOCLIMATOLOGY; PALEOGEOGRAPHY; PALEOSOLS; PERIDOTITE; PRESQUE-ISLE; SANDSTONE; UNITED-STATES; UPPER-PENINSULA; WEATHERING;

---, 1978, The unconformity-type Proterozoic pitchblende ore body model and its application to northern Michigan [abs.]: 1977 NURE Uranium Geology Symposium; Abstracts and Visual Presentations. Bendix Field Engineering Corporation, Grand Junction, Colorado, p. 231-236. ECONOMIC GEOLOGY; JACOBSVILLE-SANDSTONE; METAL-ORES; MICHIGAN; OXIDES; PERMEABILITY; PITCHBLENDE; SANDSTONE; SEDIMENTARY-ROCKS; SEDIMENTS; UNCONFORMITIES; UNITED-STATES; URANIUM-ORES;

---, 1979, Paleogeography of the Jacobsville Sandstone, Michigan:, U. S. Geological Survey, Professional Paper 1150, 38 p. CLASTIC-ROCKS; CONTROLS; ECONOMIC GEOLOGY; GENESIS; JACOBSVILLE-SANDSTONE; MICHIGAN; MINERAL DEPOSITS; MINERAL DEPOSITS, GENESIS; ORE-DEPOSITS; PALEOGEOGRAPHIC-CONTROLS; PALEOGEOGRAPHY; SANDSTONE; SEDIMENTARY-ROCKS; SEDIMENTS; UNITED-STATES; UPPER-PENINSULA; URANIUM;

---, 1982, Jacobsville Sandstone, in Wold, R. J., and Hinze, W. J., eds., Geology and tectonics of the Lake Superior basin:, Geological Society of America, Memoir 156, p. 147-155. CLASTIC-ROCKS; COMPOSITION; FLUVIAL-ENVIRONMENT; JACOBSVILLE-SANDSTONE; LAKE SUPERIOR REGION; MICHIGAN; PALEOCURRENTS; PROVENANCE; SANDSTONE; SEDIMENTARY-PETROLOGY; SEDIMENTARY- ROCKS; SEDIMENTS; UNITED-STATES;

---, 1986, Calcium carbonate cement (caliche) in Keweenawan sedimentary rocks (~1.1 Ga), Upper Peninsula of Michigan: Precambrian Research, v. 32, no. 2-3, p. 243-259. CALICHE; CARBONATE-ROCKS; CENTENNIAL-MINE; COMPOSITION; IGCP; LAKE SUPERIOR; MICHIGAN; ORONTO-GROUP; PALEOSOLS; PORTAGE LAKE VOLCANICS; SEDIMENTARY-PETROLOGY; SEDIMENTARY-ROCKS; SEDIMENTS; UNITED-STATES; UPPER-PENINSULA;

---, 1986, Possible paleocaliche in Portage Lake Volcanics and the Oronto Group, northern Michigan [abs.]: 32nd Annual Institute on Lake Superior Geology, Wisconsin Rapids, WI, v. 32, p. 37. CALICHE; CARBONATE-ROCKS; CENTENNIAL-MINE; ENVIRONMENT; FLUVIAL- ENVIRONMENT; MICHIGAN; NORTHERN-MICHIGAN; ORONTO-GROUP; PALEOSOLS; PORTAGE LAKE VOLCANICS; SEDIMENTARY-PETROLOGY; SEDIMENTARY-ROCKS; SEDIMENTATION; SEDIMENTS; SOILS; UNITED-STATES; UPPER-PENINSULA;

---, 1988, Jacobsville Sandstone and tectonic activity [abs.]: 34th Annual Institute on Lake Superior Geology, Duluth, MN, v. 34, p. 39-41. CAMBRIAN; CLASTIC-ROCKS; CONGLOMERATE; JACOBSVILLE-SANDSTONE; KEWEENAW-BAY; LAKE-GOGEBIC; MICHIGAN; PALEOZOIC; PHANEROZOIC; SANDSTONE; SEDIMENTARY-ROCKS; SEDIMENTS; SHALE; STRATIGRAPHY; UNITED-STATES; UPPER-PENINSULA;

---, 1988, Jacobsville Sandstone: An up-date:, in Upper Keweenawan rift-fill sequence Midcontinent rift system, Michigan:, Michigan Geological Society 1988 Fall Guidebook, p. 127-136. GUIDEBOOK; JACOBSVILLE-SANDSTONE; MICHIGAN; SANDSTONE; UNITED-STATES; UPPER-PENINSULA;

Kalliokoski, J., and Welch, E. J., 1985, Caliche paleosol in the lower part of the Calumet and Hecla Conglomerate, Centennial Mine, Calumet, Michigan [abs.]: 31st Annual Institute on Lake Superior Geology, Kenora, ONT, v. 31, p. 42-43. CALICHE; CALUMET; CALUMET- CONGLOMERATE; CARBON ISOTOPES; CARBONATE-ROCKS; CENTENNIAL-MINE; COMPOSITION; HECLA-CONGLOMERATE; ISOTOPES; MICHIGAN; OXYGEN ISOTOPES; PALEOSOLS; RATIOS; SEDIMENTARY-PETROLOGY; SEDIMENTARY-ROCKS; SEDIMENTS; SOILS; UNITED-STATES;

---, 1985, Keweenawan-age caliche paleosol in the lower part of the Calumet and Hecla Conglomerate, Calumet, Michigan: Geological Society of America Bulletin, v. 96, p. 1188-1193. CALICHE; CALUMET; CALUMET-CONGLOMERATE; HECLA-CONGLOMERATE; HOUGHTON- COUNTY; MICHIGAN; PALEOSOLS; UNITED-STATES; UPPER-PENINSULA;

Kantor, J. A., 1969, Assimilation and dike swarms in the Sugarloaf Mountain area, Marquette County, Michigan [M.S. Thesis]: Michigan Technological University, Houghton, 83 p. ASSIMILATION; DIABASE; DIKE; DIKE-SWARMS; LOWER-PROTEROZOIC; MARQUETTE COUNTY; MATACHEWAN DIKES; MICHIGAN; SUGARLOAF MOUNTAIN; UNITED-STATES; UPPER-PENINSULA;

Karl, J. H., 1986, Total magnetic intensity map of northern Wisconsin: Wisconsin Geological and Natural History Survey, Map 86-7, scale 1:250,000. AEROMAGNETIC SURVEY; AEROMAGNETICS; ARCHEAN; GEOPHYSICS; LOWER-PROTEROZOIC; MAP; UNITED-STATES; WISCONSIN;

Katzman, M. M., 1968, Progress of geologic investigation of the Mellen Granite, Ashland County, Wisconsin [abs.]: 14th Annual Institute on Lake Superior Geology, Superior, WI, v. 14, p. 51. ASHLAND COUNTY; EMPLACEMENT; FAULTS; LOWER-PROTEROZOIC; MELLEN COMPLEX; MELLEN GRANITE; ORONTO-GROUP; STRUCTURAL-GEOLOGY; TYLER-FORMATION; UNCONFORMITY; UNITED- STATES; WISCONSIN;

88 Kaukonen, R. J., 1994, Cryptic variation in the Partridge River Intrusion of the Duluth Complex [M.S. Thesis]: University of Oulu, Oulu, Finland, 98 p. DRILL HOLE; A4-14; APATITE; AUGITE; CHROMITE; CLINOPYROXENE; CPX; DULUTH COMPLEX; ILMENITE; LAYERED INTRUSION; MAGNETITE; MINERAL CHEMISTRY; MINNESOTA; OLIVINE; OPX; ORTHOPYROXENE; PARTRIDGE RIVER INTRUSION; PARTRIDGE RIVER TROCTOLITE SERIES; PETROGRAPHY; PETROLOGY; PLAGIOCLASE; ST. LOUIS COUNTY; UNITED-STATES; WETLEGS;

Kean, W. F., and Feeney, J., 1992, Magnetic studies of the Dresser-St. Croix Falls area, Polk County, Wisconsin [abs.]: 38th Annual Institute on Lake Superior Geology, Hurley, WI, v. 38, p. 48. GEOPHYSICS; MAGNETIC SUSCEPTIBILITY; PALEOMAGNETISM; POLK-COUNTY; REMANENT-MAGNETIZATION; REVERSE POLARITY; UNITED-STATES; WISCONSIN;

Kean, W. F., and Swingen, R. A., 1981, Paleomagnetism of a Keweenawan age intrusive near Clam Lake, Wisconsin: Geophysical Research Letters, v. 8, no. 6, p. 579-582. CLAM LAKE; CLAM LAKE INTRUSION; DIKE; GABBRO; GEOPHYSICS; MAGNETITE; MELLEN COMPLEX; NORMAL POLARITY; PALEOMAGNETISM; POLAR-WANDERING; UNITED-STATES; WISCONSIN;

Kean, W. F., Wolske, R., Chan, L. S., and Le Duc, J., 1993, Magnetic studies of the Keweenawan age Chengwatana lava flows near Dresser Wisconsin [abs.]: 39th Annual Institute on Lake Superior Geology, Eveleth, MN, v. 39, p. 49-50. BASALT; CHENGWATANA VOLCANIC GROUP; DRESSER FLOWS; DRESSER QUARRY; DRILL CORE; EAGLE PEAK FLOWS; GEOPHYSICS; MAGNETICS; MODELLING; PALEOMAGNETISM; PIPELINE FLOW; POLK-COUNTY; REMANENT-MAGNETIZATION; SKI TRAIL FLOW; UNITED-STATES; VOLCANIC ROCKS; WISCONSIN;

Keeler, R. G., 1971, The petrology of the Moss Lake Noritic Intrusion, District of Thunder Bay, Ontario [B.S. Thesis]: University of Toronto, Ontario, Canada, 53 p. CANADA; DISTRICT OF THUNDER BAY; MOSS LAKE NORITIC INTRUSION; ONTARIO; OSLER GROUP; PETROLOGY; VOLCANIC ROCKS; ZONED;

Keller, G. R., and Adams, D. C., 1992, Thoughts on the nature and extent of Keweenawan rifting in North America on recent results in other rift systems [abs.]: Eos (American Geophysical Union Transactions), v. 73, no. 14, p. 319-320. CENTRAL BASIN PLATFORM; CRUSTAL STRUCTURE; GEOPHYSICS; GLIMPCE; GRAVITY; GRAVITY-ANOMALIES; LAKE SUPERIOR; SEISMIC TOMOGRAPHY; TEXAS;

Keller, G. R., Hills, J. M., Baker, M. R., and Wallin, E. T., 1989, Geophysical and geochronological constraints on the extent and age of mafic intrusions in the basement of west Texas and eastern New Mexico: Geology, v. 17, no. 11, p. 1049-1056. AGE DATING; BASEMENT; BOREHOLE; BOUGUER-ANOMALIES; CENTRAL BASIN PLATFORM; DELAWARE ; DENSITY; DOWNHOLE; DRILL HOLE; EOCAMBRIAN; GABBRO; GEOCHRONOLOGY; GEOPHYSICS; GRAVITY; IGNEOUS-ROCKS; MAFIC; MAGNETIC; NEW MEXICO; NO. 1 NELLIE WELL; PERMIAN BASIN; REFLECTION; RIFTING; SEISMIC; SEISMIC-SURVEYS; SONIC LOG; SOUTHERN OKLAHOMA AULACOGEN; SPHENE; TEXAS; ULTRAMAFIC; UNITED-STATES; URANIUM-LEAD; VELOCITY;

Keller, G. R., Lidiak, E. G., Hinze, W. J., and Braile, L. W., 1983, The role of rifting in the tectonic development of the Midcontinent: Tectonophysics, v. 94, p. 391-412. CENOZOIC; DELAWARE; EOCAMBRIAN; MESOZOIC; MISSISSIPPI EMBAYMENT; OKLAHOMA; OKLAHOMA AULACOGEN; PALEOZOIC; PHANEROZOIC; PLATE TECTONICS; REELFOOT RIFT; RIFTING; RIFTS; RIO GRANDE RIFT; SCRATON GRAVITY HIGH; TECTONICS; UNITED-STATES;

Keller, G. V., Zablocki, C. J., and Frischknecht, F. C., 1958, Electrical methods of geophysical prospecting in the Lake Superior district [abs.]: 4th Annual Institute on Lake Superior Geology, Duluth, MN, v. 4, p. 3. COPPER; ELECTRICAL-CONDUCTIVITY; ELECTROMAGNETIC- SURVEYS; ELECTROMAGNETICS; EXPLORATION; GEOPHYSICS; IRON ORE; IRON-FORMATION; LOWER-PROTEROZOIC; NATIVE COPPER; PROSPECTING; UNITED-STATES;

Kellogg, R. L., and Hinze, W. J., 1971, An aeromagnetic survey of the southern peninsula of Michigan [abs.]: 17th Annual Institute on Lake Superior Geology, Duluth, MN, v. 17, p. 35. AEROMAGNETIC SURVEY; AEROMAGNETICS; GEOPHYSICS; LOWER PENINSULA; MICHIGAN; MICHIGAN-BASIN; UNITED-STATES;

Kelly, S. P., and Turner, G., 1991, Laser probe 40Ar-39Ar measurements of loss profiles within individual hornblende grains from the Giants Range Granite, northern Minnesota: Earth and Planetary Science Letters, v. 107, p. 634-648. 40AR/39AR; AGE DATING; ARCHEAN; ARGON-ARGON; CONTACT METAMORPHISM; COOK COUNTY; GEOCHRONOLOGY; GIANTS RANGE; GRANITE; HORNBLENDE; MINNESOTA; UNITED-STATES;

Kelly, W. C., and Nishioka, G. K., 1985, Precambrian oil inclusions in late veins of the White Pine copper deposit [abs.]: Geological Society of America Abstracts with Programs, v. 17, no. 7, p. 626. CALCITE; COPPER; HYDROCARBONS; MICHIGAN; MICHIGAN COPPER DISTRICT; OIL; ONTONAGON-COUNTY; UNITED-STATES; UPPER-PENINSULA; VEINS; WHITE PINE MINE;

---, 1985, Precambrian oil inclusions in late veins and the role of hydrocarbons in copper mineralization at White Pine, Michigan: Geology, v. 13, no. 5, p. 334-337. COPPER; COPPER HARBOR CONGLOMERATE; COPPER-ORES; ECONOMIC GEOLOGY; FLUID INCLUSIONS; GENESIS; GEOCHEMICAL-CONTROLS; HYDROCARBONS; MICHIGAN; MICHIGAN COPPER DISTRICT; MINERAL DEPOSITS; NONESUCH SHALE; OIL; ONTONAGON-COUNTY; ORGANIC-MATERIALS; ORONTO-GROUP; PETROLEUM; SEDIMENTARY-ROCKS; SEDIMENTS; UNITED-STATES; UPPER-PENINSULA; WHITE PINE MINE;

Kelly, W. C., Rye, R. O., and Livnat, A., 1986, Saline minewaters of the Keweenaw Peninsula, northern Michigan: Their nature, origin, and relation to similar deep waters in Precambrian crystalline rocks of the Canadian Shield: American Journal of Science, v. 286, p. 281-308. ALBERTA; ALBERTA BASIN; BRINES; BROMINE; CANADA; CANADIAN SHIELD; CENTENNIAL-MINE; CHLORIDES; CHLORINE; DISTRICT OF SUDBURY; FLUID INCLUSIONS; FORMATION WATER; GEOCHEMISTRY; GROUNDWATER; HYDROGEN ISOTOPES; ILLINOIS; ILLINOIS BASIN; JURASSIC; KEWEENAW PENINSULA; LOWER PENINSULA; LOWER-PROTEROZOIC; MESOZOIC; METAMORPHIC WATER; METAMORPHISM; METEORIC WATER; MICHIGAN; MICHIGAN COPPER DISTRICT; MICHIGAN-BASIN; MINEWATER;

89 NATIVE COPPER; NORTHWEST TERRITORIES; ONTARIO; ONTONAGON-COUNTY; OXYGEN ISOTOPES; PALEOZOIC; PHANEROZOIC; PORTAGE LAKE VOLCANICS; SALINE; STABLE-ISOTOPES; SUDBURY IGNEOUS COMPLEX; SUDBURY STRUCTURE; UNITED-STATES; UPPER-PENINSULA; WHITE PINE MINE; YELLOWKNIFE MINE;

Kemp, C. E., 1966, Regional geology of the Sault Ste. Marie area: 12th Annual Institute on Lake Superior Geology, Sault Ste. Marie, Guidebook, 11 p. ANKERITE; ARCHEAN; BRUCE-MINES; CAMBRIAN; CANADA; CARBONATE; CENOZOIC; CHALCOPYRITE; CLAUSTHALITE; COPPER; COPPER PORPHYRY; DEVONIAN; DIABASE; DIKES; DOLOMITE; FAULTS; GALENA; GEOLOGY; GLACIAL GEOLOGY; GRANITE; GRANITE COMPLEX; GRANITE GNEISS; GREENSTONE BELTS; GUIDEBOOK; HURONIAN; INDUSTRIAL MINERALS; JACOBSVILLE-SANDSTONE; JARDUN MINES; LEAD; METAMORPHIC-ROCKS; METAMORPHISM; METASEDIMENTS; METAVOLCANICS; MICHIGAN; MICHIGAN-BASIN; MINERAL DEPOSITS; MINERALIZATION; MUNISING-FORMATION; MURRAY FAULT; NATIVE COPPER; NATIVE SELENIUM; ONTARIO; PALEOZOIC; PEGMATITE; PHANEROZOIC; PITCHBLENDE; PLEISTOCENE; QUATERNARY; RANWICK MINE; REGIONAL; SANDSTONE; SAULT STE. MARIE; SEDIMENTARY-ROCKS; ; SILURIAN; SPHALERITE; STOBIE MINE; STRUCTURAL-GEOLOGY; SYNCLINE; THEANO POINT; UNITED-STATES; URANIUM; VEINS; ZINC;

Kent, A. E., 1981, Geology of the Craddock Cove area: Coldwell alkaline complex, northwestern Ontario [B.Sc. Thesis]: Lakehead University, Thunder Bay, Ontario, Canada, 75 p. ALKALIC COMPLEX; ALKALINE; ALKALINE INTRUSION; CANADA; COLDWELL COMPLEX; CRADDOCK COVE; DISTRICT OF THUNDER BAY; GEOLOGY; ONTARIO; PORT COLDWELL; PROTEROZOIC;

Kerr, H. L., 1910, Nepheline syenites of Port Coldwell, in: Ontario Bureau of Mines, 19th Annual Report, p. 194-232. ALKALIC COMPLEX; ALKALINE; ALKALINE INTRUSION; CANADA; COLDWELL COMPLEX; DISTRICT OF THUNDER BAY; NEPHELINE SYENITE; ONTARIO; PORT COLDWELL; SYENITE;

Kerr, S. D., and Landon, S. M., 1992, Proterozoic Midcontinent Rift System; an overview [abs.]: Geological Society of America Abstracts with Programs, v. 24, no. 7, p. A328. BASALTS; CANADA; COMPRESSION-TECTONICS; CRUST; DATA-ACQUISITION; EXTENSIONAL TECTONICS; GEOPHYSICS; GLIMPCE; GRAVITY-ANOMALIES; LAKE SUPERIOR; NONESUCH SHALE; ONTARIO; ORGANIC-CARBON; ORONTO-GROUP; PETROLEUM; POSSIBILITIES; SEDIMENTARY-ROCKS; SEDIMENTS; SEISMIC; SEISMIC-SURVEYS; STRESS; THICKNESS; UNITED-STATES;

Kilburg, J. A., 1972, Petrology, structure, and correlation of the upper Ely's Peak basalt [M.S. Thesis]: University of Minnesota, Duluth, 97 p. BASALTS; DULUTH; DULUTH COMPLEX; ELY'S PEAK; GEOLOGY; LAYERED INTRUSION; MINNESOTA; PETROLOGY; STRUCTURAL-GEOLOGY; UNITED-STATES;

---, 1972, Petrology, structure, and correlation of the upper Precambrian Ely's Peak Basalts [abs.]: 18th Annual Institute on Lake Superior Geology, Houghton, MI, v. 18, Paper 10, 2 p. ALTERATION; BASALT; BASALT-FAMILY; CONTACT METAMORPHISM; CORRELATION; DIKES; DULUTH; DULUTH COMPLEX; ELY'S PEAK; ELY'S PEAK BASALT; GRAND PORTAGE LAVAS; GREENSCHIST-FACIES; HYDROTHERMAL; IGNEOUS-ROCKS; METAMORPHISM; MINNESOTA; NOPEMING; NOPEMING-FORMATION; NORTH SHORE VOLCANIC GROUP; P T CONDITIONS; PETROLOGY; PYROXENE HORNFELS FACIES; SEDIMENTARY-ROCKS; SEDIMENTS; ST. LOUIS COUNTY; UNITED-STATES; VOLCANIC ROCKS; ZEOLITE-FACIES;

Kilburg, J. A., and Morey, G. B., 1977, Esko Quadrangle, St. Louis and Carlton Counties, Minnesota: Minnesota Geological Survey, Miscellaneous Map Series, Map M-25, scale 1:24,000. ANIMIKIE; ANIMIKIE BASIN; ANIMIKIE GROUP; CARLTON COUNTY; CARLTON COUNTY DIKES; DIKES; ESKO QUADRANGLE; LOWER-PROTEROZOIC; MAP; MINNESOTA; ST. LOUIS COUNTY; THOMSON FORMATION; UNITED-STATES;

Kim, K., and Smith, C. C., 1980, Hydraulic fracturing stress measurements near the Keweenaw Fault in upper Michigan, in De Lory, F. A., ed., Underground rock engineering:, Canadian Institute of Mining and Metallurgy, Special Volume 22, p. 24-30. 13th Canadian rock mechanics symposium (the H. R. Rice memorial symposium), Toronto, Ontario EARTHQUAKES; ENGINEERING-GEOLOGY; GEOPHYSICS; HOUGHTON- COUNTY; JACOBSVILLE-SANDSTONE; KEWEENAW FAULT; MICHIGAN; PORTAGE LAKE VOLCANICS; ROCK-MECHANICS; SANDSTONE; SEDIMENTARY-ROCKS; SEDIMENTS; SEISMIC-SOURCES; SEISMOLOGY; STRUCTURAL-GEOLOGY; TECTONICS; UNITED-STATES; UPPER-PENINSULA;

King, E. R., 1987, Aeromagnetic map of the Iron Rive 1 degree x 2 degree quadrangle, Michigan and Wisconsin: U. S. Geological Survey, Miscellaneous Investigations Series, Map I-1360-F, scale 1:250,000. AEROMAGNETIC SURVEY; AEROMAGNETICS; ARCHEAN; GEOPHYSICS; IRON RIVER 2 DEGREE QUADRANGLE; LOWER-PROTEROZOIC; MAP; MICHIGAN; UNITED-STATES; UPPER- PENINSULA; WISCONSIN;

---, 1990, Precambrian terrane of north-central Wisconsin: An aeromagnetic perspective: Canadian Journal of Earth Sciences, v. 27, p. 1472-1477. AEROMAGNETIC ANOMALY; AEROMAGNETICS; ANORTHOSITE; ARCHEAN; ATHENS SHEAR ZONE; BARRON-QUARTZITE; DIABASE; DIKES; EAU PLEINE SHEAR ZONE; FAULTS; GEOPHYSICS; HAWKINS FAULT; JUMP RIVER FAULT; KEWEENAWAN- SUPERGROUP; MAPS; MARSHFIELD TERRANE; MINERAL LAKE FAULT; MONICO FAULT; NIAGARA FAULT ZONE; NORMAL MAGNETIZATION; PALEOZOIC; PEMBINE-WAUSAU TERRANE; PENOKEAN; PENOKEAN OROGEN; PHANEROZOIC; REVERSE MAGNETIZATION; SHADED RELIEF; SPRING LAKE FAULT; STRUCTURAL-GEOLOGY; SUPERIOR PROVINCE; UNITED-STATES; WISCONSIN; WISCONSIN MAGMATIC TERRANE; WOLF RIVER BATHOLITH;

King, E. R., and Zietz, I., 1971, Aeromagnetic study of the Midcontinent gravity high of central United States: Geological Society of America Bulletin, v. 82, p. 2187-2208. AEROMAGNETICS; GEOPHYSICS; GRAVITY; IOWA; KANSAS; MINNESOTA; UNITED-STATES;

King, L., and Kreisman, P., 1976, The Regional Copper-Nickel Study: Its role, objectives, and organization: Naturalist, v. 27, no. 34, p. 8-13. COPPER; DULUTH COMPLEX; ENVIRONMENTAL; LAYERED INTRUSION; MINERAL DEPOSITS; MINNESOTA; NICKEL; REGIONAL COPPER-NICKEL STUDY; UNITED-STATES;

90 Kingston, G. A., Carrillo, F. V., Gray, J. J., and McIlroy, R., 1970, Availability of U.S. primary nickel resources:, U. S. Bureau of Mines, I.C. 8469, 57 p. AVAILABILITY; COPPER; DULUTH COMPLEX; ELY; MINERAL PROCESSING; MINNESOTA; NICKEL; ORE RESERVES; SMELTING; ST. LOUIS COUNTY; SULFIDES; UNITED-STATES;

Kirstein, M. H., 1979, Contact metamorphism of the Virginia Formation in the Minnamax Deposit, St. Louis County, Minnesota [M.S. Thesis]: University of Minnesota, Minneapolis, 60 p. A DRIFT; ANIMIKIE; ANIMIKIE GROUP; B DRIFT; BABBITT; C DRIFT; CONTACT METAMORPHISM; COPPER; D DRIFT; DULUTH COMPLEX; LAYERED INTRUSION; LOCAL BOY; LOWER-PROTEROZOIC; METAMORPHISM; MINERAL DEPOSIT; MINERALIZATION; MINNAMAX; MINNESOTA; NICKEL; ORE DEPOSIT; PARTRIDGE RIVER INTRUSION; SEDIMENTARY-ROCKS; ST. LOUIS COUNTY; SULFIDE; SULFIDES; TIGER BOY; UNITED-STATES; VIRGINIA FORMATION;

---, 1979, Contact metamorphism of the Virginia Formation, Minnamax deposit, St. Louis Co., Minnesota [abs.]: 25th Annual Institute on Lake Superior Geology, Duluth, MN, v. 25, p. 25. A DRIFT; ANIMIKIE; ANIMIKIE GROUP; B DRIFT; BABBITT; C DRIFT; CONTACT METAMORPHISM; COPPER; D DRIFT; DIABASE; DIKES; DULUTH COMPLEX; LAYERED INTRUSION; LOCAL BOY; LOWER- PROTEROZOIC; METAMORPHISM; MINERAL DEPOSIT; MINERALIZATION; MINNAMAX; MINNESOTA; NICKEL; ORE DEPOSIT; PARTRIDGE RIVER INTRUSION; RETROGRADE METAMORPHISM; SEDIMENTARY-ROCKS; ST. LOUIS COUNTY; SULFIDE; SULFIDES; TIGER BOY; UNITED-STATES; VIRGINIA FORMATION;

Kirwin, P. H., 1963, Subsurface stratigraphy of the upper Keweenawan red beds in southeastern Minnesota [M.S. Thesis]: University of Minnesota, Minneapolis, 190 p. CLASTIC-ROCKS; CLASTICS; MICHIGAN; MINERALOGY; MINNESOTA; PETROGRAPHY; RED CLASTIC SERIES; RED-BEDS; SEDIMENTARY-ROCKS; SEDIMENTS; STRATIGRAPHY; UNITED-STATES;

Kissin, S. A., 1992, Five element (Ni-Co-As-Ag-Bi) veins: Geoscience Canada, v. 19, no. 3, p. 113-124. ALKALIC COMPLEX; ALKALINE; ALKALINE INTRUSION; ALTERATION; ARIZONA; ARSENIC; ARSENIDES; AUSTRIA; BISMUTH; BLACK HAWK DISTRICT; CANADA; CARBON ISOTOPES; CENOZOIC; COBALT; COLDWELL COMPLEX; CRETACEOUS; DISTRICT OF THUNDER BAY; EUROPE; FLUID INCLUSIONS; FRANCE; GENESIS; GERMANY; GREAT BEAR LAKE; HYDROGEN ISOTOPES; HYDROTHERMAL; ITALY; LARAMIDE; LARAMIDE OROGENY; LEAD ISOTOPES; MESOZOIC; METAMORPHISM; MEXICO; MINERAL DEPOSITS; MINERALIZATION; MINERALOGY; MODELS; NEW MEXICO; NICKEL; NORTHWEST TERRITORIES; NORWAY; ONTARIO; ORIGIN; OXYGEN ISOTOPES; PHANEROZOIC; PORT COLDWELL; RADIOGENIC ISOTOPES; SILVER; SLOVENIA; STABLE-ISOTOPES; STATE OF CHIHUAHUA; STRONTIUM ISOTOPES; STRUCTURAL-GEOLOGY; SULFIDES; SULFUR ISOTOPES; SWITZERLAND COUNTY; SYNGENETIC; TERTIARY; UNITED-STATES; URANIUM; VEINS;

Kissin, S. A., Harvey, P. G., Jennings, E. A., Spivak, S. T., and Mosley, E. J., 1992, Alteration, fluid inclusions, stable isotopic and structural studies of the Rabbit Mountain silver mine, Thunder Bay district, Ontario [abs.]: 38th Annual Insitute on Lake Superior Geology, Hurley, WI, v. 38, p. 51-52. ACANTHITE; ALTERATION; AMETHYSTINE; ANIMIKIE; ARGENTITE; BADGER MINE; BARITE; BEAVER MINE; BOILING; BRECCIA; BRECCIATION; CALCITE; CANADA; CEMENTATION; CHALCOPYRITE; COBALT; CONTACT METAMORPHISM; COPPER; DISTRICT OF THUNDER BAY; ECONOMIC GEOLOGY; FAULTS; FLUID INCLUSIONS; FLUIDS; FLUORITE; GALENA; HOMOGENIZATION TEMPERATURE; ILLITE; LEAD; LOGAN SILLS; LOWER-PROTEROZOIC; MELTING TEMPERATURE; MERCURY; METAMORPHISM; NATIVE-SILVER; NICKEL; ONTARIO; ORE DEPOSITION; ORIGIN; PORCUPINE MINE; PYRITE; QUARTZ; RABBIT MOUNTAIN MINE; ROVE FORMATION; SILLS; SILVER; SILVER ISLET MINE; SILVER MOUNTAIN MINE; SOLUTIONS; SPHALERITE; STABLE-ISOTOPES; STRUCTURAL-GEOLOGY; SULFIDES; SULFUR ISOTOPES; VEINS; ZINC;

Klasner, J. S., Cannon, W. F., and Van Schmus, W. R., 1980, The pre-Keweenawan tectonic history of the north-central United States and central Canada and how it influenced formation of the Midcontinent Rift [abs.]: 26th Annual Institute on Lake Superior Geology, Eau Claire, WI, v. 26, p. 33-34. CANADA; GEOPHYSICS; GRAVITY; HISTORY; ORIGIN; STRUCTURAL-GEOLOGY; TECTONICS; UNITED-STATES;

Klasner, J. S., Cannon, W. F., and Van Schmus, W. R., 1982, The pre-Keweenawan tectonic history of southern Canadian Shield and its influence on formation of the Midcontinent Rift, in Wold, R. J., and Hinze, W. J., eds., Geology and tectonics of the Lake Superior basin:, Geological Society of America, Memoir 156, p. 27-46. CANADIAN SHIELD; EVOLUTION; STRUCTURAL-GEOLOGY; SUPERIOR PROVINCE; TECTONICS;

Klasner, J. S., Hinze, W. J., Bacon, L. O., and O'Hara, N. W., 1977, Bouguer gravity anomaly map of northern peninsula of Michigan, Lake Superior, and environs [abs.]: 23rd Annual Institute on Lake Superior Geology, Thunder Bay, ONT, v. 23, p. 22. ARCHEAN; BASIN; BOUGUER- ANOMALIES; CRUST; GEOPHYSICS; GRAVITY; GRAVITY-ANOMALIES; LAKE SUPERIOR; LOWER-PROTEROZOIC; MANTLE; MARQUETTE TROUGH; MICHIGAN; UNITED-STATES; UPPER-PENINSULA;

Klasner, J. S., King, E. R., and Jones, W. J., 1985, Geologic interpretation of gravity and magnetic data for northern Michigan and Wisconsin, in Hinze, W. J., ed., The utility of regional gravity and magnetic anomaly maps:, Society of Exploration Geophysicists, p. 267-286. GEOLOGY; GEOPHYSICS; GRAVITY; GRAVITY-ANOMALIES; MAGNETIC-ANOMALIES; MAGNETICS; MICHIGAN; UNITED-STATES; UPPER- PENINSULA; WISCONSIN;

Klasner, J. S., and Turner, T. R., 1973, Precambrian north-south oriented faults in the western Marquette District, northern Michigan [abs.]: 19th Annual Institute on Lake Superior Geology, Madison, WI, v. 19, p. 17-18. DIKES; FAULTS; KEWEENAW PENINSULA; MARQUETTE DISTRICT; MICHIGAN; STRUCTURAL-GEOLOGY; UNITED-STATES; UPPER-PENINSULA;

Klasner, J. S., Wold, R. J., Hinze, W. J., Bacon, L. O., O'Hara, N. W., and Berkson, J. M., 1979, Bouguer gravity anomaly map of the northern Michigan Lake Superior region: U. S. Geological Survey, Geophysical Map Series, Map GP-930, scale 1:1,000,000. GEOPHYSICS; GRAVITY; LAKE SUPERIOR; MAP; MICHIGAN; REGIONAL; UNITED-STATES; UPPER-PENINSULA;

91 Klewin, K. W., 1986, The petrology and geochemistry of the Potato River intrusion (eastern Mellen Complex), northern Wisconsin [abs.]: 32nd Annual Institute on Lake Superior Geology, Wisconsin Rapids, WI, v. 32, p. 45-46. GEOCHEMISTRY; MELLEN COMPLEX; POTATO RIVER INTRUSION; UNITED-STATES; WISCONSIN;

---, 1987, The petrology and geochemistry of the Potato River intrusion, northern Wisconsin [Ph.D. Dissertation]: Northern Illinois University, De Kalb, 357 p. GEOCHEMISTRY; MELLEN COMPLEX; PETROLOGY; POTATO RIVER INTRUSION; UNITED-STATES; WISCONSIN;

---, 1989, Polybaric fractionation in an evolving continental rift: Evidence from the Keweenawan mid-continent rift: Journal of Geology, v. 97, p. 65-76. PROTEROZOIC;

---, 1990, The petrology of the Proterozoic Potato River layered intrusion, northern Wisconsin: Journal of Petrology, v. 31, p. 1115-1139. LAYERED INTRUSION; MELLEN COMPLEX; PETROLOGY; POTATO RIVER INTRUSION; UNITED-STATES; WISCONSIN;

Klewin, K. W., and Berg, J. H., 1988, Chemostratigraphy of the Lower Division lavas of the Mamainse Point Formation and implications for rifting tectonics [abs.]: 34th Annual Institute on Lake Superior Geology, Marquette, MI, v. 34, p. 59-61. ALONA BAY; BASALTS; CANADA; CHEMOSTRATIGRAPHY; DISTRICT OF ALGOMA; GEOCHEMISTRY; MAGMA; MAJOR ELEMENT ANALYSES; MAMAINSE POINT FORMATION; MANTLE; MICA BAY; ONTARIO; ORIGIN; STRATIGRAPHY; SUBCONTINENTAL; VOLCANIC ROCKS; WHOLE ROCK ANALYSES;

---, 1989, Evolution of the Midcontinent Rift: A perspective from the stratigraphy and chemistry of the Mamainse Point volcanics, Ontario [abs.]: Eos (American Geophysical Union Transactions), v. 70, no. 15, p. 273-274. ASTHENOSPHERE; BASALTS; CANADA; CONGLOMERATE; DISTRICT OF ALGOMA; EVOLUTION; FAULTS; GEOCHEMISTRY; GRABENS; LITHOSPHERE; MAMAINSE POINT; MAMAINSE POINT FORMATION; MANTLE; ONTARIO; PICRITE; PLUME; SEDIMENTARY-ROCKS; SEDIMENTS; STRATIGRAPHY; STRUCTURAL- GEOLOGY; SUBCONTINENTAL; THOLEIITIC; VOLCANIC ROCKS;

---, 1990, Geochemistry of the Mamainse Point volcanics, Ontario, and implications for the Keweenawan paleomagnetic record: Canadian Journal of Earth Sciences, v. 27, p. 1194-1199. CANADA; DISTRICT OF ALGOMA; GEOCHEMISTRY; GEOPHYSICS; MAMAINSE POINT; ONTARIO; PALEOMAGNETISM; VOLCANIC SANDSTONE;

---, 1991, Petrology of the Keweenawan Mamainse Point lavas, Ontario: Petrogenesis and continental rift evolution: Journal of Geophysical Research, v. 96, p. 457-474. CANADA; DISTRICT OF ALGOMA; EVOLUTION; MAMAINSE POINT; ONTARIO; PETROGENESIS; PETROLOGY; RIFTING; VOLCANIC;

Klewin, K. W., Olmstead, J. F., and Seifert, K. E., 1989, Rock types and relationships of the Mellen igneous complex: 35th Annual Institute on Lake Superior Geology; Pt 2. Field Trip Guidebook, p. C-1 - C-15. GEOLOGY; MELLEN COMPLEX; UNITED-STATES; WISCONSIN;

Klewin, K. W., and Shirey, S. B., 1992, The igneous petrology and magmatic evolution of the Midcontinent rift system: Tectonophysics, v. 213, p. 33-40. EVOLUTION; MAGMATIC; PETROLOGY; PROTEROZOIC;

Kloos, J. H., 1871, Geological rambles in Minnesota: Minnesota Teacher and Journal of Education, v. IV, no. 6. DIKES; DULUTH; MINNESOTA; UNITED-STATES;

Knox, A. W., 1987, Geology and rare element mineralization, Dead Horse Creek yttrium property, Ontario:, Unocal Canada Ltd., Unpublished Report, 81 p. ALKALIC COMPLEX; ALKALINE; ALKALINE INTRUSION; CANADA; CARBONATITE; DEAD HORSE CREEK DIATREME; DIATREME; DISTRICT OF THUNDER BAY; MINERALIZATION; ONTARIO; RARE-EARTH ELEMENTS; REE; YTTRIUM;

Kohsmann, J. J., 1975, Qualitative correlation of seismic flux and free-air gravity with crustal structure of the Midcontinent of the United States [M.S. Thesis]: Northern Illinois University, De Kalb, 157 p. CRUST; CRUSTAL STRUCTURE; FREE-AIR GRAVITY ANOMALIES; GEOPHYSICS; GRAVITY; SEISMIC; SEISMIC FLUX; STRUCTURAL-GEOLOGY; UNITED-STATES;

Komatar, F. D., 1972, Geology of the Animikian metasedimentary rocks, Mellen granite, and Mineral Lake gabbro west of Mellen, Wisconsin [M.S. Thesis]: University of Wisconsin, 70 p. ANIMIKIE; GABBRO; GEOLOGY; GRANITE; LOWER-PROTEROZOIC; MELLEN COMPLEX; MELLEN GRANITE; METAMORPHISM; MINERAL LAKE INTRUSION; SEDIMENTARY-ROCKS; UNITED-STATES; WISCONSIN;

Konda, T., 1970, Pyroxenes from the Beaver Bay Gabbro Complex of Minnesota: Contributions to Mineralogy and Petrology, v. 29, p. 338-344. BEAVER BAY; BEAVER BAY COMPLEX; DULUTH COMPLEX; GEOCHEMISTRY; LAYERED INTRUSION; MINERALOGY; MINNESOTA; PYROXENE; UNITED-STATES;

Konda, T., and Green, J. C., 1974, Clinopyroxenes from the Keweenawan lavas of Minnesota: American Mineralogist, v. 59, p. 1190-1197. CLINOPYROXENES; MINERAL CHEMISTRY; MINERALOGY; MINNESOTA; NORTH SHORE VOLCANIC GROUP; PYROXENE; UNITED- STATES; VOLCANIC ROCKS;

Koptev-Dvomikov, E. V., Chalokwu, C. I., Ariskin, A. A., and Grant, N. K., 1995, Forward modeling of incompatible element enrichment in the basal zone of the Partridge River Intrusion [abs.]: Eos (American Geophysical Union Transactions), v. 76, no. 17, p. S288. BABBITT; CRYSTALLIZATION; DULUTH COMPLEX; GEOCHEMISTRY; IGNEOUS-PROCESSES; MINNAMAX; MINNESOTA; MODELLING; PARTRIDGE RIVER INTRUSION; PARTRIDGE RIVER TROCTOLITE SERIES; ST. LOUIS COUNTY; SULFIDE SEGREGATION; SULFIDES; UNITED-STATES;

92 Kopydlowski, P. J., 1982, The Oak Bluff volcanics, a Middle Keweenawan central volcano; Porcupine Mountains region, Michigan [M.S. Thesis]: Michigan Technological University, Houghton, 88 p. MICHIGAN; OAK BLUFF VOLCANICS; PORCUPINE MOUNTAINS; UNITED-STATES; UPPER-PENINSULA; VOLCANIC ROCKS; VOLCANO;

---, 1982, The volcanic rocks of the Unnamed Formation, Porcupine Mountains region, Michigan - A middle Keweenawan eruptive center [abs.]: 28th Annual Institute on Lake Superior Geology, International Falls, MN, v. 28, p. 16-17. ANDESITE; BASALT; BERGLAND QUADRANGLE; CHIPPEWA FELSITE; CHIPPEWA HILL; CHLORITE FACIES; COPPER HARBOR CONGLOMERATE; COPPER PEAK; FOLDING; GEOCHEMISTRY; GREENLAND-QUADRANGLE; LITTLE GIRLS POINT QUADRANGLE; MAJOR ELEMENT ANALYSES; MATCHWOOD QUADRANGLE; METAMORPHISM; MICHIGAN; MINOR ELEMENT ANALYSES; ONTONAGON-COUNTY; ORONTO-GROUP; PORCUPINE MOUNTAIN ANTICLINE; PORCUPINE MOUNTAINS; PORCUPINE MOUNTAINS WILDERNESS STATE PARK; PORTAGE LAKE VOLCANICS; QUARTZ LATITE; RHYOLITE; STRUCTURAL-GEOLOGY; THOMASTON QUADRANGLE; TRACE ELEMENT ANALYSES; UNITED-STATES; UNNAMED-FORMATION; UPPER-PENINSULA; VOLCANIC ROCKS; WHITE PINE MINE; WHOLE ROCK ANALYSES;

Korompai, A. E., 1969, Structure under the Midcontinent gravity high [M.S. Thesis]: University of Wisconsin, Madison, 53 p. GEOPHYSICS; IOWA; MINNESOTA; NEBRASKA; SEISMIC; SEISMIC-SURVEYS; STRUCTURAL-GEOLOGY; UNITED-STATES; WISCONSIN;

Kracher, A., and Seifert, K. E., 1992, Rock-magma mixing in the Duluth Complex, Enger Hill, Duluth: Part 2 - Mineral chemistry [abs.]: Eos (American Geophysical Union Transactions), v. 73, no. 43, p. 655. ANORTHOSITE; DULUTH; DULUTH COMPLEX; ENGER HILL; IGNEOUS PROCESS; LAYERED INTRUSION; MAGMA MIXING; MINERAL CHEMISTRY; MINNESOTA; ST. LOUIS COUNTY; UNITED-STATES;

Krause, D. J., 1992, The making of a mining district: Keweenawan Native Copper 1500-1870: Detroit, Wayne State University Press, 297 p. COPPER; MINING; NATIVE COPPER; PROTEROZOIC;

Kreisman, P. J., and Poppe, R., 1980, Introduction to Minnesota's copper-nickel study with a resource overview: Society of Mining Engineers of AIME Preprint 80323, 9 p. COPPER; DULUTH COMPLEX; LAKE COUNTY; LAYERED INTRUSION; MINERAL DEPOSITS; MINNESOTA; NICKEL; REGIONAL COPPER-NICKEL STUDY; RESOURCE; ST. LOUIS COUNTY; UNITED-STATES;

Krenz, K. A., and Ervin, C. P., 1977, Simple Bouguer gravity map of Minnesota, Duluth sheet: Minnesota Geological Survey, Miscellaneous Map Series, Map M-37, scale 1:250,000. ANIMIKIE; ANIMIKIE BASIN; ANIMIKIE GROUP; ARCHEAN; COOK COUNTY; DULUTH 2 DEGREE QUADRANGLE; DULUTH COMPLEX; GEOPHYSICS; GIANTS RANGE; GRANITE; GRAVITY; GREENSTONE BELTS; LAKE COUNTY; LAYERED INTRUSION; LOWER-PROTEROZOIC; MAP; MINNESOTA; NORTH SHORE VOLCANIC GROUP; ST. LOUIS COUNTY; UNITED-STATES; VOLCANIC ROCKS;

Krogh, T. E., Corfu, F., Davis, D. W., Dunning, G. R., Heaman, L. M., Kamo, S. L., and Machado, N., 1987, Precise U-Pb isotopic ages of diabase dykes and mafic to ultramafic rocks using trace amounts of baddeleyite and zircon, in Halls, H. C., and Fahrig, W. F., eds., Mafic Dyke Swarms:, Geological Association of Canada, Special Paper 34, p. 147-152. BADDELEYITE; DIABASE; DIKE; MAFIC; RADIOGENIC ISOTOPES; ULTRAMAFIC; URANIUM-LEAD; ZIRCONS;

Kucks, R. P., Chandler, V., Dods, D., Ervin, C. P., Hood, P., McConnell, K., and Teskey, D., 1989, Potential-field anomaly maps of the Lake Superior region [abs.]: Eos (American Geophysical Union Transactions), v. 70, no. 15, p. 276. AEROMAGNETIC SURVEY; AEROMAGNETICS; GEOPHYSICS; GLIMPCE; GRAVITY; GRAVITY-ANOMALIES; LAKE SUPERIOR REGION; MAGNETIC-ANOMALIES; MAGNETICS; TECTONICS;

Kuhns, M. J., Hauck, S. A., and Barnes, R. J., 1990, Origin and occurrence of platinum group metals, gold, and silver in the South Filson Creek copper- nickel mineral deposit, Lake County, Minnesota. Natural Resources Research Institute, Tech. Rept., NRRI/GMIN-TR-89-15, 60 p ALTERATION; COPPER; DULUTH COMPLEX; GOLD; LAKE COUNTY; LAYERED INTRUSION; MINERAL DEPOSIT; MINERAL DEPOSITS; MINERALIZATION; MINNESOTA; NICKEL; NRRI; ORE DEPOSIT; PGE; PLATINUM-GROUP ELEMENTS; PRECIOUS METALS; SILVER; SOUTH FILSON CREEK; SOUTH KAWISHIWI INTRUSION; SPRUCE ROAD; SULFIDE; SULFIDES; TROCTOLITE; UNITED-STATES; DRILL HOLES; K-1; K-5; K-6; K-9; K-10; K-11; K-12; K-13; K-14; K-15; K-16; K-17; K-18; K-19; K-20; K-21; K-22; K-23; K-24; K-25; K-26; K-27; K-28; K-29;

Kuhns, M. J. P., and Kuhns, R. J., 1987, Applicability of a sediment-hosted copper deposit model to the Keweenawan Solor Church Formation, Minnesota [abs.]: 33rd Annual Institute on Lake Superior Geology, Wawa, ONT, v. 33, p. 35. COPPER; ECONOMIC GEOLOGY; EXPLORATION; MINNESOTA; RED CLASTICS; RED-BEDS; SEDIMENT-HOSTED; SEDIMENTARY-ROCKS; SEDIMENTS; SOLOR CHURCH FORMATION; UNITED-STATES;

Kuhns, M. J. P., 1987, Possible oncolite occurrences in the Keweenawan Solor Church Formation, Dakota County, Minnesota [abs.]: Geological Society of America Abstracts with Programs, v. 19, p. 229-230. BIOGENIC-STRUCTURES; CARBONATE-ROCKS; CLASTIC-ROCKS; DAKOTA COUNTY; LIMESTONE; MINNESOTA; ONCOLITES; PETROGRAPHY; SEDIMENTARY STRUCTURES; SEDIMENTARY- PETROLOGY; SEDIMENTARY-ROCKS; SEDIMENTS; SILTSTONE; SOLOR CHURCH FORMATION; UNITED-STATES;

Kullerud, G., 1980, Private communication in Ramdohr, P, in The ore minerals and their intergrowths:, Pergamon Press, p. 402. MINERALOGY; PETROGRAPHY; PGE; PGM; PLATINUM-GROUP ELEMENTS; PLATINUM-GROUP MINERALS; PROTEROZOIC;

Kustra, C. R., McIlwaine, W. H., Fenwick, K. G., and Scott, J., 1977, Proterozoic rocks of the Thunder Bay area, northwestern Ontario, May 2-4, 1977, Field Excursion Guide:, 23rd Institute on Lake Superior Geology, Includes a selected bibliography of the Proterozoic rocks of the Thunder Bay area BIBLIOGRAPHY; CANADA; DISTRICT OF THUNDER BAY; GUIDEBOOK; LOWER-PROTEROZOIC; ONTARIO; PROTEROZOIC;

93 LaBerge, G. L., 1994, Geology of the Lake Superior region: Tucson, AZ, Geoscience Press, Inc., 320 p. ARCHEAN; GEOLOGY; LOWER- PROTEROZOIC; MICHIGAN; MINNESOTA; UNITED-STATES; UPPER-PENINSULA; WISCONSIN;

LaBerge, G. L., and Mudrey, M. G., Jr., 1979, Stratigraphic framework of the Wisconsin middle Precambrian:, Wisconsin Geological and Natural History Survey, Miscellaneous Paper 79-1, 22 p. BAYFIELD-GROUP; BESSEMER-QUARTZITE; MIDDLE-ORONTO-GROUP; SEDIMENTARY-ROCKS; SEDIMENTS; STRATIGRAPHY; TECTONICS; TYLER-FORMATION; UNITED-STATES; WISCONSIN;

Labotka, T. C., 1981, Thermodynamic components of biotite in pelitic hornfels from north-eastern Minnesota [abs.]: Eos (American Geophysical Union Transactions), v. 62, p. 436. BIOTITE; CONTACT METAMORPHISM; DULUTH COMPLEX; HORNFELS; LAYERED INTRUSION; METAMORPHISM; MINNESOTA; THERMODYNAMICS; UNITED-STATES;

---, 1983, Analysis of the compositional variations of biotite in pelitic hornfelses from northeastern Minnesota: American Mineralogist, v. 68, p. 900- 914. ANIMIKIE; BIOTITE; CONTACT METAMORPHISM; COOK COUNTY; DULUTH COMPLEX; HORNFELS; LAYERED INTRUSION; LOWER-PROTEROZOIC; METAMORPHISM; MINERAL CHEMISTRY; MINNESOTA; ROVE FORMATION; UNITED-STATES;

Labotka, T. C., Papike, J. J., and Morey, G. B., 1981, The effect of pressure on isochemical metamorphism of pelitic rocks from north central Minnesota [abs.]: Geological Society of America Abstracts with Programs, v. 13, p. 493. ANIMIKIE; ANIMIKIE BASIN; ANIMIKIE GROUP; CONTACT METAMORPHISM; DULUTH COMPLEX; ISOCHEMICAL; LAYERED INTRUSION; LOWER-PROTEROZOIC; METAMORPHISM; MINNESOTA; PRESSURE; ROVE FORMATION; THOMSON FORMATION; UNITED-STATES;

Labotka, T. C., Papike, J. J., Vaniman, D. T., and Morey, G. B., 1981, Petrology of contact metamorphosed argillite from the Rove Formation, Gunflint Trail, Minnesota: American Mineralogist, v. 66, p. 79-86. ANIMIKIE; ARGILLITE; CONTACT AUREOLE; CONTACT METAMORPHISM; DULUTH COMPLEX; GUNFLINT TRAIL; LAYERED INTRUSION; LOWER-PROTEROZOIC; METAMORPHISM; MINNESOTA; PETROLOGY; ROVE FORMATION; UNITED-STATES;

Labotka, T. C., Vaniman, D. T., and Papike, J. J., 1979, Petrology of the contact metamorphosed argillite in the Rove Formation, N.E. Minnesota [abs.]: Eos (American Geophysical Union Transactions), v. 60, p. 422. ANIMIKIE; ARGILLITE; CONTACT METAMORPHISM; DULUTH COMPLEX; LAYERED INTRUSION; LOWER-PROTEROZOIC; METAMORPHISM; MINNESOTA; PETROLOGY; ROVE FORMATION; UNITED- STATES;

Labotka, T. C., White, C. E., and Papike, J. J., 1984, The evolution of water in the contact-metamorphic aureole of the Duluth Complex, northeastern Minnesota: Geological Society of America Bulletin, v. 95, p. 788-804. AUREOLE; CONTACT AUREOLE; CONTACT METAMORPHISM; DULUTH COMPLEX; EVOLUTION; LAYERED INTRUSION; METAMORPHISM; MINNESOTA; UNITED-STATES; WATER;

Laderoute, D. G., 1984, The petrography and geochemistry of coronite occurrence near Killala Lake, northwestern Ontario [B.Sc. Thesis]: Lakehead University, Thunder Bay, Ontario, Canada, 38 p. ALKALIC COMPLEX; ALKALINE; CANADA; CORONITE; DISTRICT OF THUNDER BAY; GEOCHEMISTRY; KILLALA LAKE ALKALIC COMPLEX; ONTARIO; PETROGRAPHY; PROTEROZOIC;

---, 1988, The petrography, geochemistry and petrogenesis of alkaline dyke rocks from the Coldwell alkaline complex, northwestern Ontario [M.S. Thesis]: Lakehead University, Thunder Bay, Ontario, Canada, 331 p. ALKALIC COMPLEX; ALKALINE; ALKALINE INTRUSION; CANADA; COLDWELL COMPLEX; DIKES; DISTRICT OF THUNDER BAY; GEOCHEMISTRY; ONTARIO; PETROGENESIS; PETROGRAPHY; PORT COLDWELL; PROTEROZOIC;

Lamey, C. A., 1927, Some metamorphic effects of the Duluth gabbro [M.S. Thesis]: Northwestern University, Evanston, Illinois, 131 p. ARCHEAN; BIWABIK IRON-FORMATION; CONTACT METAMORPHISM; COOK COUNTY; DIABASE; DIKE; DULUTH; DULUTH COMPLEX; ELY GREENSTONE; GABIMICHIGAMA LAKE; GREENSTONE BELTS; GUNFLINT IRON-FORMATION; IRON-FORMATION; KEKEQUABIC; KEKEQUABIC LAKE; KNIFE LAKE GROUP; LAKE COUNTY; LAVA; LAYERED INTRUSION; LOWER-PROTEROZOIC; METAMORPHISM; MINNESOTA; NORTH SHORE VOLCANIC GROUP; OGISHKE CONGLOMERATE; PEGMATITE; SAGANAGA; SNOWBANK; SOUDAN IRON-FORMATION; TOURMALINE; UNITED-STATES; VERMILION DISTRICT; VOLCANIC; VOLCANIC ROCKS;

---, 1938, A dip-needle survey of the Toivola-Challenge mine area, Michigan: Economic Geology, v. 33, p. 635-646. CHALLENGE MINE; COPPER; DIP-NEEDLE SURVEY; GEOPHYSICS; MICHIGAN; MICHIGAN COPPER DISTRICT; MINE; NATIVE COPPER; TOIVOLA MINE; UNITED-STATES; UPPER-PENINSULA;

---, 1939, Some metamorphic phenomena produced by gabbroic intrusion: Journal of Geology, v. 47, p. 82-99. ARCHEAN; CONTACT METAMORPHISM; DULUTH COMPLEX; ELY GREENSTONE; GABBRO; GABEMICHIGAMI LAKE; IRON-FORMATION; KEKEQUABIC; KEKEQUABIC GRANITE; KEKEQUABIC LAKE; KNIFE LAKE GROUP; LAKE COUNTY; LAYERED INTRUSION; METAMORPHISM; MINNESOTA; OGISHKE CONGLOMERATE; PETROGRAPHY; SHOOFLY LAKE; UNITED-STATES;

Landon, S. M., 1992, Precambrian Midcontinent Rift [abs.]: American Association of Petroleum Geologists Bulletin, v., p. 71. CLASTIC-ROCKS; CONGLOMERATE; ECONOMIC GEOLOGY; EXPLORATION; EXTENSION-FAULTS; FAULTS; GRABENS; GRAVITY-ANOMALIES; HIGH ANGLE FAULTS; HORSTS; NORMAL-FAULTS; PETROLEUM; REACTIVATION; REVERSE-FAULTS; SEDIMENTARY-ROCKS; SEDIMENTS; VOLCANISM;

Lane, A. C., 1893, Geological report on Isle Royale, Michigan: Geological Survey of Michigan, v. 6, p. 1-265. COPPER; ISLE ROYALE; KEWEENAW COUNTY; MICHIGAN; UNITED-STATES;

---, 1898, Geological report on Isle Royale, Michigan:, Michigan Geological Survey, pt. 1, 281 p. ANDESITE; BASALT; GREENSTONE FLOW; ISLE ROYALE; KEWEENAW COUNTY; MICHIGAN; RHYOLITE; THICKNESS; UNITED-STATES; VOLCANIC ROCKS;

94 ---, 1909, The Keweenawan series of Michigan:, Michigan Geological and Biological Survey, Publication 6, CLASTIC; CLASTIC DIKE; COPPER; CREVICE; MICHIGAN; MICHIGAN COPPER DISTRICT; NATIVE COPPER; SEDIMENTARY-ROCKS; SEDIMENTOLOGY; UNITED- STATES; UPPER-PENINSULA; VOLCANIC ROCKS;

---, 1911, The Keweenaw Series of Michigan:, Michigan Geological and Biological Survey, Publication 6, 983 p. ANDESITE; BASALT; COPPER; GEOLOGY; GREENSTONE FLOW; ISLE ROYALE; KEWEENAW COUNTY; MICHIGAN; SEDIMENTS; UNITED-STATES; VOLCANIC ROCKS;

---, 1935, Discussion of "Differentiation in traps and ore deposition:: Economic Geology, v. 30, p. 927. COPPER; IGNEOUS PROCESS; MICHIGAN; MICHIGAN COPPER DISTRICT; ORE-DEPOSITS; ORIGIN; UNITED-STATES; UPPER-PENINSULA;

Lane, A. C., and Seaman, A. E., 1907, Notes on the geological section of Michigan, Part 1. The pre-Ordovician: Journal of Geology, v. 15, p. 680-695. ARCHEAN; ASHBED MINE; CAMBRIAN; CONGLOMERATE; COPPER HARBOR CONGLOMERATE; FREDA-SANDSTONE; GEOLOGY; HOUGHTON-COUNTY; KEWEENAW COUNTY; LAKE SHORE TRAPS; LOWER-PROTEROZOIC; MICHIGAN; NONESUCH MINE; NONESUCH SHALE; ONTONAGON-COUNTY; ORONTO-GROUP; PALEOZOIC; PHANEROZOIC; PORTAGE LAKE VOLCANICS; SANDSTONE; SEDIMENTARY-ROCKS; UNITED-STATES; UPPER-PENINSULA; VOLCANIC ROCKS;

Lankton, L. D., and Hyde, C. K., 1982, Old Reliable - an illustrated history of the Quincy Mining Company: Hancock, MI, The Quincy Mine Hoist Association, Inc., 159 p. COPPER; MICHIGAN; MICHIGAN COPPER DISTRICT; MINING; NATIVE COPPER; QUINCY MINE; UNITED- STATES; UPPER-PENINSULA;

Lapakko, K., 1978, Estimates of particle size distribution run-of-mine waste rock and primary crusher products: Minnesota Environmental Quality Board, Regional Copper-Nickel Study. COPPER; CRUSHER; DULUTH COMPLEX; LAYERED INTRUSION; MINERAL PROCESSING; MINNESOTA; NICKEL; PARTICLE SIZE; REGIONAL COPPER-NICKEL STUDY; UNITED-STATES; WASTE ROCK;

Lapakko, K. A., 1980, Kinetics and mechanisms of the oxidative dissolution of metal sulfide and silicate minerals present in the Duluth gabbro [M.S. Thesis]: University of Minnesota, Minneapolis, 337 p. 2 vol. DISSOLUTION; DULUTH COMPLEX; KINETICS; LAYERED INTRUSION; MINERAL PROCESSING; MINNESOTA; OXIDATION; SULFIDES; UNITED-STATES;

Lapakko, K. A., and Eger, P., 1981, Trace metal removal from mining stockpile runoff using peat, wood chips, tailings, till, and zeolite, in Proceedings of the Symposium on Surface Mining Hydrology, Sedimentology, and Reclamation:, p. 105-116. CONSTRUCTED WETLANDS; COPPER; DULUTH COMPLEX; ENVIRONMENTAL; GLACIAL TILL; LAYERED INTRUSION; MINNESOTA; NICKEL; PEAT; RECLAMATION; ST. LOUIS COUNTY; TAILINGS; TILL; UNITED-STATES; WOOD CHIPS; ZEOLITE;

LaPointe, P. R., 1976, Structure and petrology of the Keweenawan volcanic rocks, Mellen-Grandview area, Wisconsin [M.S. Thesis]: University of Wisconsin, Madison PETROLOGY; STRUCTURAL-GEOLOGY; UNITED-STATES; VOLCANIC ROCKS; WISCONSIN;

Larson, C. L., and Idike, F. I., 1978, Predicting initial moisture conditions for runoff model: Minneapolis, MN, St. Anthony Falls Hydraulic Laboratory, University of Minnesota, Addendum No. 1 to External Memorandum No. 155, 17 p. DULUTH COMPLEX; HYDROLOGY; LAKE COUNTY; LAYERED INTRUSION; MINNESOTA; MODEL; MODELLING; REGIONAL COPPER-NICKEL STUDY; RUNOFF; ST. LOUIS COUNTY; UNITED-STATES;

Larson, R. J., 1968, The Mott Island Conglomerate, Isle Royale National Park, Michigan [M.S. Thesis]: Michigan Technological University, Houghton, 74 p. CONGLOMERATE; ISLE ROYALE; ISLE ROYALE NATIONAL PARK; KEWEENAW COUNTY; MICHIGAN; MOTT ISLAND; SEDIMENTARY-ROCKS; UNITED-STATES; UPPER-PENINSULA;

Laws, G. R., 1983, Geology of a portion of the Little breccia zone, within the Coldwell complex [H.B.Sc. Thesis]: Lakehead University, Thunder Bay, Ontario, Canada, 82 p. ALKALIC COMPLEX; ALKALINE; ALKALINE INTRUSION; BRECCIA; BRECCIATION; CANADA; COLDWELL COMPLEX; DISTRICT OF THUNDER BAY; GEOLOGY; LITTLE PIC RIVER; ONTARIO; PORT COLDWELL; PROTEROZOIC;

Lawson, A. C., 1893, The laccolithic sills of the northwest coast of Lake Superior, in: Geological and Natural History Survey of Minnesota, Bulletin No. 8. DULUTH COMPLEX; LAYERED INTRUSION; LOGAN SILLS; MINNESOTA; SILLS; UNITED-STATES;

---, 1893, The anorthosytes of the Minnesota coast of Lake Superior:, Geological and Natural History Survey of Minnesota, Bulletin 8, pt. 1, 23 p. ANORTHOSITE; DULUTH COMPLEX; LAYERED INTRUSION; MINNESOTA; UNITED-STATES;

Lawver, J. E., Wiegel, R. L., and Schulz, N. F., 1975, Mineral beneficiation studies and an economic evaluation of Minnesota copper-nickel deposit from the Duluth Gabbro: Mineral Resources Research Center, Internal Report, 121 p. BENEFICIATION; COPPER; DULUTH COMPLEX; LAYERED INTRUSION; MINERAL PROCESSING; MINNESOTA; NICKEL; UNITED-STATES;

---, 1976, Study of economic feasibility for copper-nickel development in northern Minnesota:, University of Minnesota, Minneapolis, Proceedings of the 37th Annual Mining Symposium, and the 49th Annual Meeting of the Minnesota Section of the American Institute of Mining and Metallurgical Engineers, Paper 24, 50 p. COPPER; DULUTH COMPLEX; ECONOMIC FEASIBILITY; ECONOMIC-EVALUATION; LAYERED INTRUSION; MINING; MINNESOTA; NICKEL; UNITED-STATES;

Lawver, J. E., Wiegel, R. L., and Schulz, R. L., 1975, Mineral beneficiation studies and an economic evaluation of Minnesota copper-nickel deposit from the Duluth Gabbro: Minneapolis, Mineral Resources Research Center, University of Minnesota, Final Report, 212 p. BENEFICIATION; COPPER; DULUTH COMPLEX; ECONOMIC-EVALUATION; LAYERED INTRUSION; MINERAL PROCESSING; MINNESOTA; NICKEL; UNITED-STATES;

95 Lee, C. K., and Kerr, S. D., 1984, Midcontinent rift - a frontier oil province: Oil and Gas Journal, v., p. 145-150. AFRICA; BOHAI RIFT BASIN; CENTRAL ; COCORP; COPPER HARBOR CONGLOMERATE; DNEIPER-DONETS RIFT BASIN; EAST AFRICAN RIFT; EGYPT; EXPLORATION; FREDA-SANDSTONE; GAS; GEOPHYSICS; GRAVITY; HYDROCARBONS; IOWA; KANSAS; KEWEENAW PENINSULA; KEWEENAWAN-SUPERGROUP; LIBYA; LOWER PENINSULA; MAFIC; MAGNETICS; MICHIGAN; MINNESOTA; NEBRASKA; NONESUCH SHALE; NORTH SEA; OIL; ORONTO-GROUP; PEOPLES REPUBLIC OF CHINA; PORTAGE LAKE VOLCANICS; PRC; REFRACTION; RICE COUNTY; RIFT BASIN; RUSSIA; SANDSTONE; SEDIMENTARY-BASINS; SEDIMENTARY-ROCKS; SEISMIC; SEISMIC-SURVEYS; SIRTE RIFT BASIN; SUEZ RIFT BASIN; SUNGLIAO RIFT BASIN; THICKNESS; TSAIDAM RIFT BASIN; UNITED- STATES; UPPER-PENINSULA; VIKING GRABEN; VOLCANIC ROCKS; WISCONSIN;

Lee, C. K., and Kerr, S. D., Jr., 1983, Mid-Continent rift system - a frontier hydrocarbon province [abs.]: American Association of Petroleum Geologists Bulletin, v. 67, p. 1325. EXPLORATION; GAS; HYDROCARBONS; OIL; UNITED-STATES;

Lee, I., 1994, Petrologic and geochemical studies of the Spruce Road Cu-Ni deposit, Duluth Complex, Minnesota [Ph.D. Dissertation]: Indiana University, Bloomington, 253 p. DRILL HOLE; 34870-A; ALTERATION; ASSIMILATION; BIOTITE; BORNITE; CHALCOPYRITE; CHROMIUM SPINEL; CLINOPYROXENE; CONTAMINATION; COPPER; CPX; CUBANITE; DIGENITE; DISSEMINATED ORE; DULUTH COMPLEX; FRACTIONAL CRYSTALLIZATION; GEOCHEMISTRY; HYDROGEN ISOTOPES; HYDROTHERMAL; ILMENITE; IMMISCIBLE SULFIDE LIQUID; INCO; LAKE COUNTY; LAYERED INTRUSION; MACKINAWITE; MAGNETITE; MINERAL CHEMISTRY; MINERAL DEPOSIT; MINERALIZATION; MINERALOGY; MINNESOTA; MINOR ELEMENT ANALYSES; MODELLING; NICKEL; OLIVINE; OPX; ORIGIN; ORTHOPYROXENE; OXYGEN ISOTOPES; PARTIAL MELTING; PENTLANDITE; PETROGENESIS; PETROLOGY; PLAGIOCLASE; PYRRHOTITE; SOUTH KAWISHIWI INTRUSION; SPHALERITE; SPRUCE ROAD; STABLE-ISOTOPES; SULFIDES; SULFUR ISOTOPES; TITANIFEROUS MAGNETITE; TRACE ELEMENT ANALYSES; UNITED-STATES; WHOLE ROCK ANALYSES;

Lee, I., and Ripley, 1993, Geochemical evidence for multiple magma injections in the formation of the Spruce Road Cu-Ni deposit [abs.]: Geological Society of America Abstracts with Programs, v. 25, no. 3, p. A34. COPPER; DULUTH COMPLEX; GEOCHEMISTRY; LAKE COUNTY; LAYERED INTRUSION; MINERAL DEPOSIT; MINERALIZATION; MINNESOTA; NICKEL; ORIGIN; SOUTH KAWISHIWI INTRUSION; SPRUCE ROAD; SULFIDES; UNITED-STATES;

Lee, I., and Ripley, E. M., 1993, Stable isotopes as indicators of melt-country rock interaction at the Spruce Road Cu-Ni deposit, Duluth Complex, Minnesota [abs.]: Geological Society of America Abstracts with Programs, v. 25, no. 6, p. A400. ASSIMILATION; CONTAMINATION; COPPER; DULUTH COMPLEX; LAKE COUNTY; LAYERED INTRUSION; MINERAL DEPOSIT; MINERALIZATION; MINNESOTA; NICKEL; SOUTH KAWISHIWI INTRUSION; SPRUCE ROAD; STABLE-ISOTOPES; SULFIDES; UNITED-STATES;

---, 1995, Genesis of Cu-Ni sulfide mineralization at the Spruce Road deposit, South Kawishiwi Intrusion, Duluth Complex [abs.]: 41st Annual Institute on Lake Superior Geology, Marathon, ONT, v. 41, p. 36-37. ASSIMILATION; COPPER; DULUTH COMPLEX; GENESIS; LAKE COUNTY; MELTING; MINERALIZATION; MINNESOTA; NICKEL; SOUTH KAWISHIWI INTRUSION; SPRUCE ROAD; STABLE- ISOTOPES; SULFIDES; SULFUR ISOTOPES; UNITED-STATES;

Lee, I. S., and Ripley, E. M., 1989, Mineralogic and sulfur isotopic studies of the Spruce Road Cu-Ni deposit, Duluth Complex, Minnesota [abs.]: Geological Society of America Abstracts with Programs, v. 21, p. A131. COPPER; DULUTH COMPLEX; LAKE COUNTY; LAYERED INTRUSION; MINERAL CHEMISTRY; MINERAL DEPOSIT; MINERALIZATION; MINERALOGY; MINNESOTA; NICKEL; OLIVINE; SOUTH KAWISHIWI INTRUSION; SPRUCE ROAD; STABLE-ISOTOPES; SULFIDE; SULFIDES; SULFUR ISOTOPES; UNITED-STATES;

Lee, K., 1971, Amphiboles and pyroxenes from the syenitic rocks of the Coldwell Alkaline Complex, District of Thunder Bay [B.Sc. Thesis]: Lakehead University, Thunder Bay, Ontario, Canada, 75 p. ALKALIC COMPLEX; ALKALINE; ALKALINE INTRUSION; AMPHIBOLE; CANADA; COLDWELL COMPLEX; DISTRICT OF THUNDER BAY; ONTARIO; PORT COLDWELL; PYROXENE; SYENITE;

Lee, M. W., Agena, W. F., and Hutchinson, D. R., 1988, Processing of the GLIMPCE multichannel seismic data:, U. S. Geological Survey, Open File Report 88-225, 46 p. CANADA; GEOPHYSICS; GLIMPCE; LAKE SUPERIOR; ONTARIO; REFLECTION; SEISMIC; SEISMIC-SURVEYS; UNITED-STATES;

Lee, M. W., and Hutchinson, D. R., 1989, True-amplitude processing of GLIMPCE seismic reflection data: Techniques and uncertainties [abs.]: Eos (American Geophysical Union Transactions), v. 70, no. 15, p. 278. CANADA; GEOPHYSICS; GLIMPCE; LAKE SUPERIOR; LAKE-HURON; PROCESSING; SEISMIC; SEISMIC-SURVEYS; UNITED-STATES;

Leeman, W. P., 1977, Comparison of Rb/Sr and U/Pb and rare earth characteristics of subcontinental and suboceanic mantle regions, in: Oregon Department of Geology and Mineralogy, Bulletin 96, p. 149-168. GEOCHEMISTRY; LITHOSPHERE; MANTLE; MINNESOTA; RADIOGENIC ISOTOPES; RARE-EARTH ELEMENTS; REE; RUBIDIUM-STRONTIUM; SUBCONTINENTAL; SUBOCEANIC; UNITED-STATES; URANIUM-LEAD;

---, 1977, Rb and Sr isotopic study of Keweenawan lavas and inferred 4 b.y. old lithosphere beneath part of Minnesota [abs.]: Geological Society of America Abstracts with Programs, v. 9, p. 1068. LITHOSPHERE; MINNESOTA; NORTH SHORE VOLCANIC GROUP; RADIOGENIC ISOTOPES; RUBIDIUM-STRONTIUM; UNITED-STATES; VOLCANIC ROCKS;

Lehman, G. A., 1980, The bedrock geology of a portion of the Cramer 15-minute quadrangle, Lake County, Minnesota [M.S. Thesis]: University of Minnesota, Duluth, 132 p. DULUTH COMPLEX; GEOLOGY; LAKE COUNTY; LAYERED INTRUSION; MAP; MINNESOTA; UNITED- STATES;

Lehman, G. A., and Davidson, D. M., Jr., 1979, Petrology of the troctolite-olivine gabbro series, Duluth Gabbro Complex (Late Precambrian), northeastern Cramer quadrangle, Lake and Cook counties, Minnesota [abs.]: 25th Annual Institute on Lake Superior Geology, Duluth, MN, v. 25,

96 p. 28. COOK COUNTY; CRAMER QUADRANGLE; DULUTH COMPLEX; GEOCHEMISTRY; LAKE COUNTY; LAYERED INTRUSION; MINERAL CHEMISTRY; MINNESOTA; OLIVINE; PETROLOGY; PLAGIOCLASE; PYROXENE; UNITED-STATES;

Lehmann, E. K., and Beck, J. W., 1994, The Birch Lake prospect - A major PGM prospect in the Duluth Complex [abs.]: 40th Annual Institute on Lake Superior Geology, Houghton, MI, p. 33-34. ALTERATION; BIRCH LAKE; BISMUTH; CHLORINE; COPPER; DULUTH COMPLEX; ECONOMIC POTENTIAL; FLUIDS; LAKE COUNTY; LAYERED INTRUSION; MINNESOTA; NICKEL; PALLADIUM; PGE; PGM; PLATINUM; PLATINUM-GROUP ELEMENTS; PLATINUM-GROUP METALS; SAUSSURITIZATION; SERPENTINIZATION; SOLUTIONS; ST. LOUIS COUNTY; SULFIDES; TELLURIDES; TELLURIUM; UNITED-STATES;

Lehnert-Thiel, K., Loewer, R., Orr, R. G., and Robertshaw, P., 1992, Diamond-bearing kimberlites in Saskatchewan, Canada: the Fort à la Corne case history: Exploration and Mining Geology, v. 1, no. 4, p. 391-403. AEROMAGNETIC SURVEY; AEROMAGNETICS; AGE DATING; BASEMENT; BOUGUER-ANOMALIES; CAMBRIAN; CANADA; CANADIAN SHIELD; CARBONATE; CENOZOIC; CHURCHILL PROVINCE; CLASTIC; CLUSTERS; CRATER FACIES; CRETACEOUS; DEVONIAN; DIAMONDS; DIATREME; DISCOVERY; ECLOGITIC DIAMONDS; EXPLORATION; FORT À LA CORNE KIMBERLITES; GEM QUALITY; GEOCHEMISTRY; GEOCHRONOLOGY; GEOPHYSICS; GLENNIE DOMAIN; GRAVITY; GRAVITY-SURVEYS; GROUND MAGNETOMETER SURVEY; KIMBERLITES; MACRODIAMONDS; MAJOR ELEMENT ANALYSES; MESOZOIC; MICRODIAMONDS; MINOR ELEMENT ANALYSES; ORDOVICIAN; PALEOZOIC; PERIDOTITIC DIAMONDS; PHANEROZOIC; PIPE; QUATERNARY; REINDEER ZONE; RUBIDIUM-STRONTIUM; SASKATCHEWAN; SEDIMENTARY-ROCKS; TRACE ELEMENTS ANALYSES; TRANS-HUDSON OROGEN; WHOLE ROCK ANALYSES;

Leighton, M. W., 1951, Petrogenesis of a gabbro-granophyre complex in northwestern Wisconsin [Ph.D. Dissertation]: University of Chicago, Chicago GABBRO; GRANOPHYRE; MELLEN COMPLEX; PETROGENESIS; PETROLOGY; UNITED-STATES; WISCONSIN;

---, 1953, Petrogenesis of a gabbro-granophyre complex in northwestern Wisconsin [abs.]: American Mineralogist, v. 38, p. 348. GABBRO; GRANOPHYRE; MELLEN COMPLEX; PETROGENESIS; UNITED-STATES; WISCONSIN;

---, 1954, Petrogenesis of a gabbro-granophyre complex in northern Wisconsin: Geological Society of America Bulletin, v. 65, p. 401-442. ASHLAND COUNTY; BAYFIELD-COUNTY; DIFFERENTIATION; DIKES; GABBRO; GRANOPHYRE; HISTORICAL-GEOLOGY; IGNEOUS- PROCESSES; IGNEOUS-ROCKS; INTRUSIONS; MAPS; MELLEN COMPLEX; METAMORPHIC-ROCKS; ROCK-DESCRIPTIONS; SEDIMENTARY-ROCKS; SEDIMENTS; UNITED-STATES; WISCONSIN;

Leith, C. K., 1933, The Lake Superior region. XVI Internat. Geol. Cong., Guidebook 27: Excursion C-4, 101 p DULUTH COMPLEX; GEOLOGY; IRON-FORMATION; LAKE SUPERIOR; LAYERED INTRUSION; MINNESOTA; NORTH SHORE VOLCANIC GROUP; UNITED-STATES; VOLCANIC ROCKS;

Leith, C. K., Lund, R. J., and Leith, A., 1935, Precambrian rocks of the Lake Superior region:, U. S. Geological Survey, Professional Paper 184, 34 p. DULUTH COMPLEX; LAYERED INTRUSION; MELLEN COMPLEX; MINNESOTA; UNITED-STATES; WISCONSIN;

Leonardson, R. W., 1966, Petrology of the Bergland Rhyolite, the Firetower Rhyolite and associated rocks, Ontonagon County, Michigan [M.S. Thesis]: Michigan Technical University, Houghton, 121 p. FELSIC; MICHIGAN; ONTONAGON-COUNTY; PETROLOGY; RHYOLITE; UNITED-STATES; UPPER-PENINSULA; VOLCANIC ROCKS;

Leone, R. J., Seasor, R. W., and Rohrbacher, T. J., 1971, Geology of the White Pine area, in White, W. S., ed., Field conference of the Michigan copper district: Houghton, Michigan Technological University Press, p. 44-64. BAYFIELD-GROUP; COPPER; COPPER HARBOR CONGLOMERATE; ECONOMIC GEOLOGY; FREDA-SANDSTONE; GENESIS; GUIDEBOOK; IRON-RIVER; MICHIGAN; MICHIGAN COPPER DISTRICT; MINERAL DEPOSITS; NONESUCH SHALE; ONTONAGON-COUNTY; ORONTO-GROUP; PORCUPINE MOUNTAINS; PORTAGE LAKE VOLCANICS; SANDSTONE; SEDIMENTARY-ROCKS; SEDIMENTS; UNITED-STATES; UPPER-PENINSULA; WHITE PINE FAULT; WHITE PINE MINE;

Leslie, M., Wetzel, T., Wirth, K. R., and Craddock, J. P., 1994, Petrography and structure of the Keweenawan Chengwatana Volcanics near Dresser, Wisconsin [abs.]: 40th Annual Institute on Lake Superior Geology, Houghton, MI, v. 40, p. 35-36. ALTERATION; BASALT; CHENGWATANA VOLCANIC GROUP; DIABASE; DRESSER; DRESSER TRAP ROCK QUARRY; GEOCHEMISTRY; GREENSCHIST-FACIES; HYDROTHERMAL; INTERFLOW SEDIMENTS; JOINTS; LAVA-FLOWS; METAMORPHISM; PETROGRAPHY; SEDIMENTS; STRAIN; STRUCTURAL-GEOLOGY; TAYLOR'S FALLS; THRUST FAULT; UNITED-STATES; VOLCANIC ROCKS; WISCONSIN;

Leszczyszn, W., 1959, Geology of Pic Island [B.Sc. Thesis]: University of Western Ontario, London, Ontario, Canada ALKALIC COMPLEX; ALKALINE; ALKALINE INTRUSION; CANADA; COLDWELL COMPLEX; DISTRICT OF THUNDER BAY; GEOLOGY; ONTARIO; PIC ISLAND; PORT COLDWELL; PROTEROZOIC;

Lewchuk, M. T., and Sumons, D. T. A., 1989, Age and petrogenesis of the Middle Proterozoic Coldwell Complex of Ontario from paleomagnetism [abs.]: Geological Association of Canada/Mineralogical Association of Canada Program with Abstracts, v. 14, p. A109. AGE DATING; ALKALIC COMPLEX; ALKALINE; ALKALINE INTRUSION; CANADA; COLDWELL COMPLEX; DISTRICT OF THUNDER BAY; GEOPHYSICS; NORMAL POLARITY; ONTARIO; PALEOMAGNETISM; PORT COLDWELL; REVERSE POLARITY;

Lewchuk, M. T., and Symons, D. T. A., 1988, Paleomagnetism of the Clay-Howells carbonatite and Keweenawan motion on the KSZ [abs.]: 34th Annual Institute on Lake Superior Geology, Marquette, MI, v. 34, p. 65. AGE DATING; ALKALIC COMPLEX; ALKALINE; CANADA; CANADIAN SHIELD; CARBONATITE; CLAY-HOWELLS ALKALIC COMPLEX; GEOCHRONOLOGY; GEOPHYSICS; KAPUSKASING STRUCTURAL ZONE; LOGAN LOOP; ONTARIO; PALEOMAGNETISM; PALEOPOLE; RUBIDIUM-STRONTIUM; SUPERIOR PROVINCE;

97 ---, 1990, Paleomagnetism of the Late Precambrian Coldwell Complex, Ontario, Canada: Tectonophysics, v. 184, p. 73-86. AGE DATING; ALKALIC COMPLEX; ALKALINE; ALKALINE INTRUSION; CANADA; COLDWELL COMPLEX; DISTRICT OF THUNDER BAY; GEOPHYSICS; NORMAL POLARITY; ONTARIO; PALEOMAGNETISM; PORT COLDWELL; REVERSE POLARITY;

Li; F. S., 1971, Interpretation of a gravity profile across the Midcontinent Gravity High at latitude 45°30' [M.S. Thesis]: University of Minnesota AEROMAGNETIC SURVEY; AEROMAGNETICS; BARRON COUNTY; BOUGUER-ANOMALIES; DOUGLAS-FAULT; FAULTS; GEOPHYSICS; GRAVITY; GRAVITY-SURVEYS; ISANTI COUNTY; LAKE OWEN FAULT; MAGNETIC-SURVEYS; MAGNETICS; PINE FAULT; POLK-COUNTY; RUSK COUNTY; SAINT CROIX HORST; SEDIMENTARY-ROCKS; SHERBERNE COUNTY; STRUCTURAL- GEOLOGY; THICKNESS; UNITED-STATES; VOLCANIC ROCKS;

Li, H., Shaw, D. M., and Schwarcz, H. P., 1992, Delta 18-O, lithium and boron variations in mafic rocks from the Keweenawan Mamainse Point Formation, Ontario [abs.]: Eos (American Geophysical Union Transactions), v. 24, no. 7, p. A329. CANADA; DIKES; DISTRICT OF ALGOMA; GEOCHEMISTRY; HYDROTHERMAL; MAMAINSE POINT FORMATION; METAMORPHISM; ONTARIO; OXYGEN ISOTOPES; PREHNITE-PUMPELLYITE FACIES; STABLE-ISOTOPES; TRACE ELEMENT ANALYSES; ZEOLITE-FACIES;

Li, H. L., 1987, Remagnetization of the Allouez Conglomerate in the Portage Lake Volcanics in Michigan [M.S. Thesis]: Michigan Technological University, Houghton, 45 p. ALLOUEZ CONGLOMERATE; GEOPHYSICS; KEWEENAW COUNTY; MICHIGAN; PORTAGE LAKE VOLCANICS; REMAGNETIZATION; UNITED-STATES; UPPER-PENINSULA;

Li, H. L., and Beske-Diehl, S., 1993, Low-temperature metamorphism and secondary components in the Portage Lake Volcanics: a reassessment: Canadian Journal of Earth Sciences, v. 30, p. 1404-1414. ALTERATION; GEOPHYSICS; HEMATITE; HYDROTHERMAL; MAGNETITE; MAGNETIZATION; METAMORPHISM; MICHIGAN; PORTAGE LAKE VOLCANICS; UNITED-STATES; UPPER-PENINSULA;

Liberty, B. A., 1980, Paleozoic stratigraphic studies on the Michigan Basin's northern rim, in Votaw, R. B., ed., Ordovician and Silurian geology of the northern peninsula of Michigan:, Michigan Basin Geological Society, p. 33. BOBCAYGEON-FORMATION; GUIDEBOOK; JACOBSVILLE- SANDSTONE; LINDSAY-FORMATION; MICHIGAN; MUNISING-FORMATION; PALEOZOIC; PHANEROZOIC; SANDSTONE; SEDIMENTARY-ROCKS; SEDIMENTS; STRATIGRAPHY; UNITED-STATES; VERULAM-FORMATION;

Lichty, R. W., Meyers, C. H., and Steinnes, D. N., 1979, Format for gathering data: Copper/Nickel Report #3, in Lichty, R. W., and Steinnes, D. N., eds., Copper-Nickel Studies: Duluth, School of Business and Economics, University of Minnesota, Duluth, Bureau of Business and Economic Research, Working Paper Number 79-10, p. 88p. COPPER; DULUTH COMPLEX; ECONOMIC ANALYSIS; ECONOMICS; LAKE COUNTY; LAYERED INTRUSION; MINNESOTA; NICKEL; REGIONAL COPPER-NICKEL STUDY; ST. LOUIS COUNTY; UNITED-STATES;

Lichty, R. W., Meyers, C. H., and Steinnes, S. N., 1979, Identification and training of primary data collectors: Copper/Nickel Project Report #4, in Lichty, R. W., and Steinnes, D. N., eds., Copper-Nickel Studies: Duluth, School of Business and Economics, University of Minnesota, Duluth, Bureau of Business and Economic Research, Working Paper 79-10, p. 2p. COPPER; DULUTH COMPLEX; ECONOMIC ANALYSIS; ECONOMICS; LAKE COUNTY; LAYERED INTRUSION; MINNESOTA; NICKEL; REGIONAL COPPER-NICKEL STUDY; ST. LOUIS COUNTY; UNITED- STATES;

Lichty, R. W., and Steinnes, D. N., 1979, Ely market area study, Report #1: Alternative models for analyzing the Ely base economy, in Lichty, R. W., and Steinnes, D. N., eds., Copper-nickel studies: Duluth, School of Business and Economics, University of Minnesota, Duluth, Bureau of Business and Economics Research; Duluth, Working Paper Number 79-10, p. 40p. ANALYSIS; COPPER; DULUTH COMPLEX; ECONOMIC ANALYSIS; ECONOMICS; ELY; LAKE COUNTY; LAYERED INTRUSION; MARKET STUDY; MINNESOTA; MODEL; NICKEL; REGIONAL COPPER- NICKEL STUDY; ST. LOUIS COUNTY; UNITED-STATES;

---, 1979, Ely market area study, Report # 2: An economic analysis of the Ely base economy, in Lichty, R. W., and Steinnes, D. N., eds., Copper-Nickel Studies: Duluth, School of Business and Economics, University of Minnesota, Duluth, Bureau of Business and Economic Research, Working Paper Number 79-10, p. 46p. COPPER; DULUTH COMPLEX; ECONOMIC ANALYSIS; ELY; LAKE COUNTY; LAYERED INTRUSION; MINNESOTA; NICKEL; REGIONAL COPPER-NICKEL STUDY; ST. LOUIS COUNTY; UNITED-STATES;

Lidiak, E. G., 1964, Correlation of basement rocks with the mid-continent gravity anomaly in Nebraska and Kansas [abs.]: Society of Exploration Geophysicists Yearbook 1964, p. 207. GEOPHYSICS; GRAVITY; KANSAS; NEBRASKA; UNITED-STATES;

---, 1972, Precambrian rocks in the subsurface of Nebraska:, Nebraska Geological Survey, Bulletin 26, 41 p. GEOLOGY; NEBRASKA; RIFT BASIN; SUBSURFACE; UNITED-STATES;

Lidiak, E. G., and Hinze, W. J., 1980, Pre-Upper Cambrian sedimentary rocks of the northern Midcontinent; a review [abs.]: Eos (American Geophysical Union Transactions), v. 61, no. 48, p. 1195. BAYFIELD-GROUP; CAMBRIAN; CLASTIC-ROCKS; DISTRIBUTION; LAKE SUPERIOR REGION; MT. SIMON SANDSTONE; ORONTO-GROUP; PALEOZOIC; PHANEROZOIC; SANDSTONE; SEDIMENTARY- PETROLOGY; SEDIMENTARY-ROCKS; SEDIMENTS; STRUCTURAL-GEOLOGY; TECTONICS; UNCONFORMITIES; UNITED-STATES; UPPER-CAMBRIAN;

Lieberman, G., 1976, The Regional Copper-Nickel Study: Biological sciences program: Naturalist, v. 27, no. 34, p. 32-37. BIOLOGICAL SCIENCES; BIOLOGY; COPPER; DULUTH COMPLEX; LAYERED INTRUSION; MINNESOTA; NICKEL; REGIONAL COPPER-NICKEL STUDY; UNITED-STATES;

Lightfoot, P. C., 1995, The relationship between mantle plumes, flood basalts and mineralization [abs.]: 41st Annual Institute on Lake Superior Geology, Marathon, ONT, v. 41, p. 42-43. AFRICA; ALKALIC COMPLEX; ALKALINE; ALKALINE INTRUSION; ASIA; ; BRAZIL; CANADA; COLDWELL COMPLEX; CONTAMINATION; COPPER; CRYSTAL LAKE INTRUSION; DECCAN TRAPS; DISTRICT OF THUNDER BAY; DULUTH COMPLEX; EXPLORATION; FLOOD BASALTS; GEOCHEMISTRY; GREENLAND; HOTSPOT;

98 INDIA; INSIZWA COMPLEX; KAROO; LAYERED INTRUSION; MAGMATIC SULFIDES; MANTLE PLUME; MESOZOIC; MINERALIZATION; MINNESOTA; NADEZHDINSKY FORMATION; NICKEL; NORIL'SK; NORIL'SK-KHARAYELAKHSKY FAULT; ONTARIO; OSLER GROUP; PARANÁ TRAPS; PGE; PHANEROZOIC; PLATINUM-GROUP ELEMENTS; PORT COLDWELL; RUSSIA; SIBERIA; SIBERIAN TRAPS; SOUTH AFRICA; SOUTH AMERICA; ST. IGNACE ISLAND; TALNAKH; TRIASSIC; UNITED-STATES;

Lightfoot, P. C., Sutcliffe, R. H., and Doherty, W., 1991, Crustal contamination identified in Keweenawan Osler Group tholeiites, Ontario: A trace element perspective: Journal of Geology, v. 99, p. 739-760. CANADA; CRUSTAL CONTAMINATION; DISTRICT OF THUNDER BAY; GEOCHEMISTRY; MINOR ELEMENT ANALYSES; ONTARIO; OSLER GROUP; TRACE ELEMENT ANALYSES;

Lilley, F. E. M., 1964, An analysis of the magnetic features of the Port Coldwell intrusive [M.Sc. Thesis]: University of Western Ontario, London, Ontario, Canada, 89 p. ALKALIC COMPLEX; ALKALINE; ALKALINE INTRUSION; CANADA; COLDWELL COMPLEX; DISTRICT OF THUNDER BAY; GEOPHYSICS; MAGNETICS; ONTARIO; PORT COLDWELL; PROTEROZOIC;

Lindgren, W., 1933, Mineral deposits: New York, McGraw Hill, CHLORIDES; COPPER; FLUIDS; MAGMATIC; METEORIC; MICHIGAN; MICHIGAN COPPER DISTRICT; ORIGIN; UNITED-STATES; UPPER-PENINSULA;

Lindsay, D. W., 1986, The provenance of the Jacobsville Formation of the Upper Peninsula of Michigan through a petrographic study [M.S. Thesis]: Western Michigan University, Kalamazoo CAMBRIAN; CLASTIC-ROCKS; JACOBSVILLE-SANDSTONE; LITHOSTRATIGRAPHY; MICHIGAN; PALEOZOIC; PETROGRAPHY; PETROLOGY; PHANEROZOIC; PROVENANCE; SANDSTONE; SEDIMENTARY- PETROLOGY; SEDIMENTARY-ROCKS; SEDIMENTS; STRATIGRAPHY; UNITED-STATES; UPPER-PENINSULA;

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Livant, A., 1983, Metamorphism and copper mineralization of the Portage Lake Lava Series, northern Michigan [Ph.D. Dissertation]: University of Michigan, Ann Arbor, 292 p. CHALCOCITE; COPPER; METAMORPHISM; MICHIGAN; MICHIGAN COPPER DISTRICT; MINERALIZATION; PORTAGE LAKE LAVAS; SULFIDES; SULFUR ISOTOPES; UNITED-STATES; UPPER-PENINSULA;

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Livnat, A., 1983, Metamorphism and copper mineralization of Portage Lake Lava Series, northern Michigan [Ph.D. Dissertation]: University of Michigan, Ann Arbor, 292 p. COPPER; METAMORPHISM; MICHIGAN; MICHIGAN COPPER DISTRICT; MINERALIZATION; PORTAGE LAKE VOLCANICS; UNITED-STATES; UPPER-PENINSULA;

Livnat, A., Kelly, W. C., Essene, E. J., and Rye, R. O., 1983, P-T-X conditions of sub-greenschist burial metamorphism and copper mineralization, Keweenaw Peninsula, northern Michigan [abs.]: Geological Society of America Abstracts with Programs, v. 15, no. 6, p. 629. BURIAL- METAMORPHISM; COPPER; COPPER-ORES; ECONOMIC GEOLOGY; FLUID INCLUSIONS; GENESIS; GREENSCHIST-FACIES; KEWEENAW PENINSULA; METAMORPHIC-ROCKS; METAMORPHISM; MICHIGAN; MICHIGAN COPPER DISTRICT; MINERAL DEPOSITS; MINERALIZATION; PHASE-EQUILIBRIA; PRESSURE; SEDIMENTARY-ROCKS; SEDIMENTS; TEMPERATURE; THERMOMETRY; UNITED-STATES; UPPER-PENINSULA;

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Lum, H. K., 1973, Petrology of the eastern gabbro and associated sulphide mineralization of the Coldwell alkalic complex, Ontario [B.Sc. Thesis]: Carleton University, Ottawa, Ontario, Canada, 69 p. ALKALIC COMPLEX; ALKALINE; ALKALINE INTRUSION; CANADA; COLDWELL COMPLEX; COPPER; DISTRICT OF THUNDER BAY; GABBRO; MINERAL DEPOSIT; MINERALIZATION; NICKEL; ONTARIO; PETROLOGY; PORT COLDWELL; SULFIDES;

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---, 1975, The petrology of a sulfide-bearing layered intrusion at the base of the Duluth Complex, St. Louis County, Minnesota [Ph.D. Dissertation]: University of Toronto, Ontario, Canada, 251 p. CHALCOPYRITE; COPPER; DULUTH COMPLEX; GRAPHITE; ILMENITE; INTRUSIVE; ISOTOPES; LAYERED INTRUSION; MAGNETITE; MINERAL CHEMISTRY; MINNESOTA; OLIVINE; OUIS; OXIDE-BEARING ULTRAMAFIC INTRUSION; PETROGENESIS; PETROLOGY; PLAGIOCLASE; PYROXENE; PYRRHOTITE; ST. LOUIS COUNTY; SULFIDE; SULFIDES; SULFUR; SULFUR ISOTOPES; TI; TITANIUM; UNITED-STATES; WATER HEN; DRILL HOLES;

Mainwaring, P. R., and Douthitt, C. B., 1981, Carbon isotope study of graphitic sulfides in the Duluth Complex, Minnesota [abs.]: Geological Association of Canada/Mineralogical Association of Canada Program with Abstracts, v. 6, p. A37. CARBON ISOTOPES; DULUTH COMPLEX; GRAPHITE; LAYERED INTRUSION; MINNESOTA; OUIS; OXIDE-BEARING ULTRAMAFIC INTRUSION; ST. LOUIS COUNTY; STABLE- ISOTOPES; SULFIDE; SULFIDES; ULTRAMAFIC; UNITED-STATES; WATER HEN; WATER HEN INTRUSION;

Mainwaring, P. R., and Naldrett, A. J., 1974, Genesis of Cu-Ni sulfides in the Duluth Complex [abs.]: Geological Society of America Abstracts with Programs, v. 6, no. 7, p. 854-855. COPPER; DULUTH COMPLEX; GENESIS; ISOTOPES; LAYERED INTRUSION; MINNESOTA; NICKEL; OXIDE; OXIDE-BEARING ULTRAMAFIC INTRUSION; ST. LOUIS COUNTY; SULFIDES; SULFUR ISOTOPES; UNITED-STATES; WATER HEN;

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---, 1974, The Waterhen intrusion: A discrete layered body in the troctolitic series of the Duluth Complex [abs.]: 20th Annual Institute on Lake Superior Geology, Sault Ste. Marie, ONT, v. 20, p. 21. ANIMIKIE; ANIMIKIE BASIN; CUMULATES; CYCLIC LAYERING; DULUTH COMPLEX; FOOTWALL; GRAPHITE; HORNFELS; IGNEOUS LAYERING; ILMENITE; LAYERED INTRUSION; LOWER-PROTEROZOIC; MINNESOTA; OUIS; OXIDE-BEARING ULTRAMAFIC INTRUSION; SOUTH COMPLEX AREA; ST. LOUIS COUNTY; SULFIDE; THOMSON FORMATION; TROCTOLITIC SERIES; ULTRAMAFIC; UNITED-STATES; VIRGINIA FORMATION; WATER HEN;

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Mancuso, J. D., and Dolence, J. D., 1970, Structure of the Duluth Gabbro Complex in the Babbitt area, Minnesota [abs.]: 16th Annual Institute on Lake Superior Geology, Thunder Bay, ONT, v. 16, p. 27. BABBITT; COPPER; DULUTH COMPLEX; LAYERED INTRUSION; MINERAL DEPOSIT; MINERALIZATION; MINNAMAX; MINNESOTA; NICKEL; ORE DEPOSIT; PARTRIDGE RIVER INTRUSION; ST. LOUIS COUNTY; STRUCTURAL-GEOLOGY; SULFIDE; SULFIDES; UNITED-STATES;

Mangham, J. R., 1975, The structure and petrology of the eastern Mellen intrusive complex, Iron County, Wisconsin [M.S. Thesis]: University of Wisconsin, Madison, 134 p. IRON-COUNTY; MELLEN COMPLEX; PETROLOGY; STRUCTURAL-GEOLOGY; UNITED-STATES; WISCONSIN;

102 Manhes, G., Allègre, C. J., Dupré, B., and Hamelin, B., 1980, Lead isotope study of basic-ultrabasic layered complexes: Speculations about the age of the earth and primitive mantle characteristics: Earth and Planetary Science Letters, v. 47, p. 370-382. AFRICA; AGE DATING; ANORTHOSITIC SERIES; ARCHEAN; BALD EAGLE INTRUSION; BEARTOOTH MOUNTAINS; BEAVER BAY COMPLEX; BUSHVELD COMPLEX; CENOZOIC; CONTAMINATION; DULUTH COMPLEX; ELIJÄRVI COMPLEX; EVOLUTION; FINLAND; GABBRO LAKE QUADRANGLE; GEOCHRONOLOGY; GRANOPHYRE; GREENLAND; KOLA PENINSULA; LAKE COUNTY; LAYERED INTRUSION; LEAD ISOTOPES; LEAD-LEAD; LOWER-PROTEROZOIC; MAFIC; MANTLE; MINNESOTA; MONTANA; MUNTSCHE GORA PLUTON; MUNTSCHE TUNDRA; PHANEROZOIC; PORTTIVAARA COMPLEX; RADIOGENIC ISOTOPES; RUSSIA; SKAERGAARD INTRUSION; SOUTH AFRICA; SOUTH KAWISHIWI INTRUSION; STILLWATER COMPLEX; TERTIARY; ULTRAMAFIC; UNITED-STATES;

Mansker, W. L., Richards, B. D., and Cole, G. P., 1987, A note on newly discovered kimberlites in Riley County, Kansas, in Morris, E. M., and Pasteris, J. D., eds., Mantle Metasomatism and Alkaline Magmatism:, Geological Society of America, Special Paper 215, p. 197-204. ABILENE ANTICLINE; AEROMAGNETICS; BALDWIN CREEK KIMBERLITE; CLASSIFICATION; CRATER FACIES; DIAMONDS; FANCY CREEK KIMBERLITE; GEOPHYSICS; GROUND MAGNETIC SURVEY; IRVING SYNCLINE; KANSAS; KIMBERLITES; LONETREE KIMBERLITES; MAGNETICS; RILEY COUNTY; SWEDE CREEK KIMBERLITE; UNITED-STATES;

Manson, M. L., 1989, A submersible investigation of the Superior Shoals, Lake Superior [M.S. Thesis]: University of Toronto, Toronto, Ontario, Canada JACOBSVILLE-SANDSTONE; LAKE SUPERIOR; SANDSTONE; SUPERIOR-SHOAL;

Manson, M. L., and Halls, H. C., 1989, A submersible dive on Superior Shoal, central Lake Superior [abs.]: Eos (American Geophysical Union Transactions), v. 70, no. 15, p. 275. BOTTOM-FEATURES; GEOPHYSICAL-SURVEYS; GEOPHYSICS; JACOBSVILLE-SANDSTONE; JOHNSON SEALINK SUBMERSIBLE; LAKE SUPERIOR; LAKES; MAGNETIC-SURVEYS; PALEOMAGNETISM; RESEARCH-VESSELS; SANDSTONE; SEDIMENTARY-ROCKS; SEDIMENTS; SUBMERSIBLES; SUPERIOR-SHOAL; VOLCANIC ROCKS;

---, 1992, The geometry and sense of post-Keweenawan faults in eastern Lake Superior: Implications for models of rift development [abs.]: Eos (American Geophysical Union Transactions), v. 73, no. 14, p. 320. AEROMAGNETIC SURVEY; AEROMAGNETICS; BATCHAWANA BAY; BATCHAWANA GREENSTONE BELT; CANADA; DISTRICT OF ALGOMA; DRAG FOLDING; FAULTS; FOLDING; GEOPHYSICS; GLIMPCE; GRINDSTONE POINT; MAMAINSE POINT FORMATION; MICHIPICOTEN ISLAND FAULT; MODELLING; MODELS; ONTARIO; SANDSTONE; SEDIMENTARY-ROCKS; SEDIMENTS; STRUCTURAL-GEOLOGY;

---, 1994, Post-Keweenawan compressional faults in the eastern Lake Superior region and their tectonic significance: Canadian Journal of Earth Sciences, v. 31, no. 4, p. 640-651. AEROMAGNETIC SURVEY; AEROMAGNETICS; ARCHEAN; BATCHAWANA BAY; BATCHAWANA GREENSTONE BELT; BAYFIELD-GROUP; BOUGUER-ANOMALIES; BUSHY BAY FAULT; CANADA; CAPE GARGANTUA; COMPRESSION-TECTONICS; DENSITY; DISTRICT OF ALGOMA; FAULTS; FOLDING; GEOPHYSICS; GLIMPCE; GNI/ARGONNE LINE 15; GNI/ARGONNE LINE 36; GRABENS; GRANT-NORPAC; GRAVITY; GRENVILLE OROGENY; GRINDSTONE POINT; HAVILLAND FAULT; ISLE ROYALE FAULT; ISOCLINAL FOLDS; IVANHOE LAKE FAULT; JACOBSVILLE-SANDSTONE; KEWEENAW PENINSULA; MAMAINSE LAKE FAULT; MAMAINSE POINT; MAMAINSE POINT FAULT; MICHIGAN; MICHIPICOTEN FAULT; MICHIPICOTEN ISLAND; MODEL; MODELLING; MONTREAL RIVER FAULT; ONTARIO; RED ROCK FAULT; REVERSE-FAULTS; SANDSTONE; SEISMIC; SEISMIC LINE F; STRUCTURAL-GEOLOGY; TECTONICS; THRUST FAULT; UNITED-STATES; UPPER-PENINSULA; VOLCANIC ROCKS;

Manzer, G. K., 1978, Petrology and geochemistry of Precambrian mafic dikes, Minnesota, and its bearing on the secular chemical variations in Precambrian basaltic magmas [Ph.D. Dissertation]: Rice University, Houston, Texas, 217 p. ARCHEAN; ASH RIVER QUADRANGLE; BAUDETTE SE QUADRANGLE; BEAR RIVER QUADRANGLE; BELLINGHAM QUADRANGLE; BIG FALLS QUADRANGLE; BIRCHDALE SE QUADRANGLE; BIWABIK NW QUADRANGLE; CARLTON COUNTY; CARLTON COUNTY DIKES; CLOQUET QUADRANGLE; COOK QUADRANGLE; DARK LAKE QUADRANGLE; DIKES; DULUTH HEIGHTS QUADRANGLE; DULUTH QUADRANGLE; ESKO QUADRANGLE; GEOCHEMISTRY; GHEEN NW QUADRANGLE; GRANITE FALLS QUADRANGLE; ISLAND VIEW QUADRANGLE; ITASCA COUNTY; KABETOGAMA QUADRANGLE; KOOCHICHING COUNTY; LAKE COUNTY; LAKE OF THE WOODS COUNTY; LINDEN GROVE QUADRANGLE; LOGAN SILLS; LOMAN QUADRANGLE; MAFIC; MAGMA; MAJOR ELEMENT ANALYSES; MANITOU QUADRANGLE; MARGIE QUADRANGLE; MEADOW BROOK QUADRANGLE; MINNESOTA; MINNESOTA RIVER VALLEY; MINNESOTA RIVER VALLEY SUBPROVINCE; MONTEVIDIO QUADRANGLE; MOOSE LAKE QUADRANGLE; MORGAN QUADRANGLE; NASHWAUK QUADRANGLE; NETT LAKE QUADRANGLE; ORR QUADRANGLE; PETROGRAPHY; PETROLOGY; PIGEON RIVER DIKES; PINE LAKE EAST QUADRANGLE; SHERRY LAKE QUADRANGLE; SIDE LAKE QUADRANGLE; SOUTH FOUL LAKE QUADRANGLE; ST. CLOUD QUADRANGLE; ST. LOUIS COUNTY; STEARNS COUNTY; STINGY LAKE QUADRANGLE; TOWER QUADRANGLE; UNITED-STATES; VERMILION DISTRICT; VIRGINIA QUADRANGLE; WHOLE ROCK ANALYSES; YELLOW MEDICINE COUNTY;

Marcellus, B. D., 1968, Aeromagnetic map of central Pine County, Minnesota and adjacent parts of Wisconsin: U. S. Geological Survey, Geophysical Investigation, Map GP-636. AEROMAGNETIC SURVEY; AEROMAGNETICS; GEOPHYSICS; MAP; MINNESOTA; PINE-COUNTY; UNITED-STATES; WISCONSIN;

Mariano, J., 1992, Geophysical investigations of the Midcontinent rift in eastern Lake Superior [Ph.D. Dissertation]: Purdue University, West Lafayette, Indiana GEOPHYSICS; LAKE SUPERIOR; UNITED-STATES;

Mariano, J., and Hinze, W. F., 1991, Geophysical investigations of the midcontinent rift in eastern Lake Superior using variable magnetization modeling [abs.]: 37th Annual Institute on Lake Superior Geology, Eau Claire, WI, v. 37, p. 68-69. GEOPHYSICS; LAKE SUPERIOR; MAGNETICS; MODELLING; UNITED-STATES;

Mariano, J., and Hinze, W. J., 1992, Magnetic modeling of complexly magnetized bodies with implications to the structure of the Midcontinent Rift in eastern Lake Superior [abs.]: Eos (American Geophysical Union Transactions), v. 73, no. 14, p. 320. CANADA; COMPRESSION-TECTONICS;

103 DISTRICT OF ALGOMA; FAULTS; FOLDS; GEOPHYSICS; GRAVITY; MAGNETICS; MICHIPICOTEN ISLAND; MODELLING; ONTARIO; REFLECTION; REMANENT-MAGNETIZATION; REVERSE-FAULTS; SEISMIC; SEISMIC-SURVEYS; STRUCTURAL-GEOLOGY;

---, 1994, Gravity and magnetic models of the Midcontinent Rift in eastern Lake Superior: Canadian Journal of Earth Sciences, v. 31, no. 4, p. 661- 674. AEROMAGNETIC ANOMALY; BASALT; BOUGUER-ANOMALIES; CANADA; CLASTICS; CRUST; DAVIEAUX ISLAND MEMBER; DISTRICT OF ALGOMA; GEOPHYSICS; GLIMPCE; GNI/ARGONNE LINE 26; GNI/ARGONNE LINE 36; GRAVITY; GRAVITY- ANOMALIES; KEWEENAW FAULT; LAKE SUPERIOR; MAGNETIC-ANOMALIES; MAGNETICS; MAMAINSE POINT FORMATION; MICHIPICOTEN ISLAND; MICHIPICOTEN ISLAND FORMATION; MODELLING; MODELS; NORMAL POLARITY; ONTARIO; REFLECTION; REMANENT-MAGNETIZATION; REVERSE POLARITY; SEDIMENTARY-ROCKS; SEISMIC; SEISMIC LINE F; STRUCTURAL-GEOLOGY; THICKNESS; VOLCANIC ROCKS;

---, 1994, Structural interpretation of the Midcontinent Rift in eastern Lake Superior from seismic reflection and potential-field studies: Canadian Journal of Earth Sciences, v. 31, no. 4, p. 619-628. AEROMAGNETIC ANOMALY; AEROMAGNETICS; ANTICLINES; ARCHEAN; BASALTS; BOUGUER-ANOMALIES; CANADA; COMPRESSION-TECTONICS; CRISP POINT FAULT; CRUST; DEER PARK ANTICLINE; DISTRICT OF ALGOMA; DISTRICT OF THUNDER BAY; GEOPHYSICS; GLIMPCE; GRANT-NORPAC; GRAVITY; ISLE ROYALE FAULT; JACOBSVILLE-SANDSTONE; KEWEENAW FAULT; LAKE SUPERIOR; MAGNETICS; MAMAINSE POINT; MICHIGAN; MICHIPICOTEN ISLAND FAULT; MODELLING; ONTARIO; ORONTO-GROUP; POTENTIAL FIELD; REFLECTION; REGIONAL; REVERSE-FAULTS; RIFT BASIN; SANDSTONE; SEISMIC; SEISMIC LINE 15; SEISMIC LINE 25; SEISMIC LINE 26; SEISMIC LINE 36; SEISMIC LINE A; SEISMIC LINE B; SEISMIC LINE F; SEISMIC LINE G; SEISMIC-SURVEYS; STRATIGRAPHY; STRUCTURAL-GEOLOGY; ; THIEL FAULT; UNITED-STATES; UPPER-PENINSULA; VOLCANIC ROCKS;

---, 1995, Integrated potential-field and seismic reflection studies of the Midcontinent Rift in eastern Lake Superior [abs.], in Ojakangas, R. W., Dickas, A. B., and Green, J. C., eds., Basement Tectonics 10: Proceedings of the Tenth International Conference on Basement Tectonics: Netherlands, Kluwer Academic Publishers, v. 4, p. 11-14. AEROMAGNETIC SURVEY; AEROMAGNETICS; CANADA; CRUST; GEOPHYSICS; GLIMPCE; GRAVITY; KEWEENAW FAULT; LAKE SUPERIOR REGION; MICHIPICOTEN ISLAND; MODELS; ONTARIO; REFLECTION; REMANENT- MAGNETIZATION; RIFT BASIN; SEDIMENTARY-ROCKS; SEISMIC; SEISMIC-SURVEYS; STRATIGRAPHY; STRUCTURAL-GEOLOGY; THIEL FAULT; UNITED-STATES; VOLCANIC ROCKS;

Marsden, R. W., 1978, Iron ore reserves of Wisconsin - A minerals availability system report, in Proceedings of the 51st annual meeting, Minnesota Section AIME, and 39th annual mining symposium:, AIME, Minnesota Section, p. 24-1-24-28. AGENDA DEPOSIT; ASHLAND COUNTY; BARABOO DISTRICT; BUTTERNUT DEPOSIT; DIKES; ECONOMIC GEOLOGY; FLORENCE DISTRICT; GOGEBIC IRON RANGE; HEMATITE; IRON ORE; IRON-COUNTY; IRON-FORMATION; IRONWOOD IRON FORMATION; JACKSON COUNTY; LOWER- PROTEROZOIC; MAGNETITE; MELLEN COMPLEX; METALLURGY; METAMORPHISM; MINERAL PROCESSING; MINNESOTA; NATURAL ORE; ORE RESERVES; PINE LAKE DEPOSIT; SEVEN MILE MOUND DEPOSIT; SEVEN MILE MOUND MINE; STRUCTURAL- GEOLOGY; TACONITE; TILDEN MOUND DEPOSIT; UNITED-STATES; WISCONSIN;

Marsden, R. W., and Walker, N. E., 1972, Summary review of the progressive metamorphism of the Biwabik Formation, Mesabi Range, Minnesota, in Precambrian Iron-Formation Symposium, Abstracts and Field Guides:, Society of Economic Geologists and the University of Minnesota, Duluth, p. 1-4. BIWABIK IRON-FORMATION; CONTACT METAMORPHISM; DULUTH COMPLEX; IRON-FORMATION; LOWER- PROTEROZOIC; MESABI RANGE; METAMORPHISM; MINERALOGY; MINNESOTA; REGIONAL METAMORPHISM; ST. LOUIS COUNTY; UNITED-STATES;

Martin, D., 1985, A compilation of ore mineral occurrences, drill core, and testpits in the State of Minnesota:, Minnesota Department of Natural Resources, Division of Minerals, Report 231, 360 p. ARCHEAN; COOK COUNTY; COPPER; DRILL CORE; DULUTH COMPLEX; GREENSTONE BELTS; IRON ORE; LAKE COUNTY; LAYERED INTRUSION; LOWER-PROTEROZOIC; MASSIVE SULFIDE ORE; MINERALOGY; MINNESOTA; NICKEL; ST. LOUIS COUNTY; SULFIDES; UNITED-STATES; VMS; VOLCANOGENIC MASSIVE SULFIDES;

Martin, D. P., and Eng, M., 1986, Esker prospecting over the Duluth Complex in northeastern Minnesota:, Minnesota Department of Natural Resources, Division of Minerals, Report 246, 26 p. CENOZOIC; CHROMIUM; COPPER; DULUTH COMPLEX; ESKER; EXPLORATION; GLACIAL GEOLOGY; GOLD; LAYERED INTRUSION; MINNESOTA; NICKEL; PGE; PHANEROZOIC; PLATINUM-GROUP ELEMENTS; PLEISTOCENE; PROSPECTING; SEDIMENT; SILVER; STREAM; STREAM-SEDIMENTS; TITANIUM; UNITED-STATES;

Martineau, M., 1991, Platinum-group element geochemistry of the Cu-Ni mineralization in the basal zone of the Babbitt deposit, Duluth Complex, Minnesota - A discussion: Economic Geology, v. 86, p. 1355-1358. BABBITT; COPPER; DULUTH COMPLEX; GEOCHEMISTRY; LAYERED INTRUSION; MINERAL DEPOSIT; MINERALIZATION; MINNAMAX; MINNESOTA; NICKEL; ORE DEPOSIT; PARTRIDGE RIVER INTRUSION; PGE; PLATINUM-GROUP ELEMENTS; ST. LOUIS COUNTY; SULFIDE; SULFIDES; UNITED-STATES;

Martineau, M. P., 1989, Empirically derived controls on Cu-Ni mineralization: A comparison between fertile and barren gabbros in the Duluth Complex, Minnesota, U.S.A, in Prendergast, M. D., and Jones, M. J., eds., Magmatic sulphides-The Zimbabwe Volume: London, England, Institute of Mining and Metallurgy, p. 117-137. A4-14; ANIMIKIE; ANIMIKIE GROUP; B1-100; B1-103; B1-105; B1-115; B1-117; B1-122; B1-124; B1- 128; B1-134; B1-136; B1-142; B1-144; B1-147; B1-148; B1-155; B1-168; B1-17; B1-171; B1-177; B1-179; B1-188; B1-190; B1-191; B1-192; B1- 196; B1-201; B1-24; B1-29; B1-313; B1-39; B1-54; B1-56; B1-66; B1-73; B1-81; B1-82; B1-85; B1-91; B1-94; B1-97; BABBITT; BASALT; BASE METAL ANALYSES; BATHTUB; BEDDED PYRRHOTITE UNIT; COPPER; DDH 17700; DISSEMINATED ORE; DRILL HOLES; DULUTH COMPLEX; GENESIS; GEOCHEMISTRY; GEOLOGY; HORNFELS; K-8; KA-1; KA-4; LAKE COUNTY; LAYERED INTRUSION; LOCAL BOY; LOWER-PROTEROZOIC; MAJOR ELEMENT ANALYSES; MASSIVE SULFIDE ORE; MINERAL DEPOSIT; MINERALIZATION; MINNAMAX; MINNESOTA; NICKEL; NM-3; ORE DEPOSIT; ORIGIN; PARTRIDGE RIVER INTRUSION; SEDIMENTARY-ROCKS; SOUTH KAWISHIWI INTRUSION; ST. LOUIS COUNTY; SULFIDE; SULFIDES; TIGER BOY; TUSCARORA INTRUSION; UNITED-STATES; VIRGINIA FORMATION; WETLEGS; WHOLE ROCK ANALYSES;

104 Marvine, A. R., 1873, Correlation of the rocks of Houghton and Keweenaw counties, in: Michigan Geological Survey, v. 1, pt. 2, p. 47-61,95-140. HOUGHTON-COUNTY; KEWEENAW COUNTY; MICHIGAN; MICHIGAN COPPER DISTRICT; UNITED-STATES; UPPER-PENINSULA; VOLCANIC ROCKS;

Maslowski, A., 1986, Where's the Midwest silver: Jewelry Making Gems and Minerals, v. 581, p. 38-39. ASHLAND COUNTY; BARAGA COUNTY; BAYFIELD-COUNTY; BROWN-COUNTY; DOUGLAS-COUNTY; ECONOMIC GEOLOGY; FOREST COUNTY; INDIANA; MARQUETTE COUNTY; MICHIGAN; MORGAN-COUNTY; PIERCE-COUNTY; PLACERS; POLK-COUNTY; SEDIMENTARY-ROCKS; SEDIMENTS; SILVER-ORES; UNITED-STATES; WISCONSIN;

Massey, N. W. D., 1978, The geochemistry of Keweenawan lavas of the Mamainse Point Formation, Ontario [abs.]: 24th Annual Institute on Lake Superior Geology, Milwaukee, WI, v. 24, p. 23. BURIAL-METAMORPHISM; CANADA; DISTRICT OF ALGOMA; GEOCHEMISTRY; GEOPHYSICS; MAMAINSE POINT; MAMAINSE POINT FORMATION; METAMORPHISM; ONTARIO; PALEOMAGNETISM; RIFTING; ZEOLITE-FACIES;

---, 1979, Keweenawan paleomagnetic reversals at Mamainse Point, Ontario: Fault repetition of three reversals?: Canadian Journal of Earth Sciences, v. 16, p. 373-375. CANADA; DISTRICT OF ALGOMA; FAULT; GEOPHYSICS; MAMAINSE POINT; MAMAINSE POINT FORMATION; ONTARIO; PALEOMAGNETISM; REVERSALS; STRUCTURAL-GEOLOGY; VOLCANIC ROCKS;

---, 1980, Petrographic and geochemical evidence for crustal contamination in some Keweenawan flows and dykes from Mamainse Point, Ontario: The Canadian Mineralogist, v. 18, p. 271-274. CANADA; CONTAMINATION; CRUST; DIKE; DISTRICT OF ALGOMA; GEOCHEMISTRY; MAMAINSE POINT; MAMAINSE POINT FORMATION; ONTARIO; PETROGRAPHY; PETROLOGY; VOLCANIC ROCKS;

---, 1980, The geochemistry of some Keweenawan metabasites from Mamainse Point, Ontario [Ph.D. Dissertation]: McMaster University, Hamilton, Ontario, Canada, 352 p. BASALTS; CANADA; DISTRICT OF ALGOMA; FLOOD BASALTS; GEOCHEMISTRY; MAMAINSE POINT; MAMAINSE POINT FORMATION; METABASALT; METABASITE; ONTARIO; THOLEIITIC BASALT; VOLCANIC ROCKS;

---, 1982, Transitional basalts in the Keweenawan Rift: Canadian Journal of Earth Sciences, v. 19, p. 1326-1329. BASALT; CANADA; DISTRICT OF ALGOMA; MAMAINSE POINT FORMATION; ONTARIO; VOLCANIC ROCKS;

---, 1983, Magma genesis in a Late Proterozoic prot-oceanic rift: REE and other trace-element data from the Keweenawan Mamainse Point Formation, Ontario: Precambrian Research, v. 21, p. 81-100. BASALT; CANADA; DISTRICT OF ALGOMA; FLOOD BASALTS; GENESIS; GEOCHEMISTRY; MAGMA; MAMAINSE POINT; MINOR ELEMENTS; ONTARIO; RARE-EARTH ELEMENTS; REE; THOLEIITIC BASALT; TRACE ELEMENTS ANALYSES; VOLCANIC ROCKS;

Mathews, K. E., 1975, Future developments in open stoping and cut and fill mining systems, in Proceedings of the 36th Annual Mining Symposium and 48th Annual Meeting, Minnesota Section, American Institute of Mining and Metallurgical Engineers:, University of Minnesota, Minneapolis, p. 102-111. BABBITT; COPPER; CUT AND FILL; DULUTH COMPLEX; LAYERED INTRUSION; LOCAL BOY; MINERAL DEPOSIT; MINING; MINING-METHODS; MINNAMAX; MINNESOTA; NICKEL; OPEN STOPING; PARTRIDGE RIVER INTRUSION; ST. LOUIS COUNTY; UNITED-STATES;

Mathez, E. A., 1971, Geology and petrology of the Logan intrusives of the Hungry Jack Lake quadrangle, Cook County, Minnesota [M.S. Thesis]: University of Arizona, Tucson, 111 p. CLINOPYROXENE; COOK COUNTY; CPX; DULUTH COMPLEX; GEOLOGY; HUNGARY JACK LAKE; HUNGARY JACK LAKE QUADRANGLE; ILMENITE; LAYERED INTRUSION; LOGAN SILLS; MAGNETITE; MAP; MINERAL CHEMISTRY; MINNESOTA; OLIVINE; PETROLOGY; PLAGIOCLASE; SILLS; UNITED-STATES;

Mathez, E. A., Nathan, H. D., and Morey, G. B., 1977, Hungary Jack Lake quadrangle, Cook County, Minnesota: Minnesota Geological Survey, Miscellaneous Map Series, Map M-39, scale 1:24,000. ANIMIKIE; CONTACT METAMORPHISM; COOK COUNTY; DULUTH COMPLEX; GEOLOGY; HUNGARY JACK LAKE; HUNGARY JACK LAKE QUADRANGLE; LAYERED INTRUSION; LOGAN SILLS; LOWER- PROTEROZOIC; MAP; MINNESOTA; ROVE FORMATION; SILLS; UNITED-STATES;

Matlack, W. F., 1979, Geology of the Duluth Complex-Virginia Formation contact, Minnamax deposit, Minnesota [abs.]: 25th Annual Institute on Lake Superior Geology, Duluth, MN, v. 25, p. 29. A DRIFT; ANIMIKIE; ANIMIKIE GROUP; B DRIFT; BABBITT; C DRIFT; CONTACT METAMORPHISM; COPPER; D DRIFT; DULUTH COMPLEX; GEOLOGY; LAYERED INTRUSION; LOCAL BOY; LOWER-PROTEROZOIC; METAMORPHISM; MINERAL DEPOSIT; MINERALIZATION; MINNAMAX; MINNESOTA; NICKEL; ORE DEPOSIT; PARTRIDGE RIVER INTRUSION; SEDIMENTARY-ROCKS; ST. LOUIS COUNTY; SULFIDE; SULFIDES; TIGER BOY; UNITED-STATES; VIRGINIA FORMATION;

---, 1980, Geology and sulfide mineralization of the Duluth Complex-Virginia Formation contact, Minnamax deposit, St. Louis Country, Minnesota [M.S. Thesis]: University of Minnesota, Duluth, 90 p. A DRIFT; ANIMIKIE; ANIMIKIE GROUP; B DRIFT; BABBITT; C DRIFT; COPPER; D DRIFT; DULUTH COMPLEX; GEOLOGY; LAYERED INTRUSION; LOCAL BOY; LOWER-PROTEROZOIC; MINERAL DEPOSIT; MINERALIZATION; MINNAMAX; MINNESOTA; NICKEL; ORE DEPOSIT; PARTRIDGE RIVER INTRUSION; SEDIMENTARY-ROCKS; ST. LOUIS COUNTY; SULFIDE; SULFIDES; TIGER BOY; UNITED-STATES; VIRGINIA FORMATION;

Matlack, W. F., and Watowich, S. N., 1980, Geology and sulfide mineralization of the Duluth Complex - Virginia Formation contact, Minnamax deposit, Minnesota [abs.]: Geological Society of America Abstracts with Programs, v. 12, p. 477-478. A DRIFT; ANIMIKIE; ANIMIKIE GROUP; B DRIFT; BABBITT; C DRIFT; COPPER; D DRIFT; DULUTH COMPLEX; GEOLOGY; LAYERED INTRUSION; LOCAL BOY; LOWER- PROTEROZOIC; MINERAL DEPOSIT; MINERALIZATION; MINNAMAX; MINNESOTA; NICKEL; ORE DEPOSIT; PARTRIDGE RIVER INTRUSION; SEDIMENTARY-ROCKS; ST. LOUIS COUNTY; SULFIDE; SULFIDES; TIGER BOY; UNITED-STATES; VIRGINIA FORMATION;

105 Mattis, A. F., 1970, Petrology and sedimentation of lower Keweenawan Puckwunge Formation of Minnesota, in Summary of fieldwork, 1970:, Minnesota Geological Survey, Information Circular 8, p. 12. METAMORPHIC-ROCKS; MINERAL-COMPOSITION; MINNESOTA; PETROLOGY; PUCKWUNGE FORMATION; QUARTZITE; SEDIMENTARY-ROCKS; SEDIMENTS; STRUCTURAL-GEOLOGY; UNITED- STATES;

---, 1971, Lower Keweenawan sediments of the Lake Superior region [abs.]: 17th Annual Institute on Lake Superior Geology, Duluth, MN, v. 17, p. 45-46. ANIMIKIE; BESSEMER FORMATION; COOK COUNTY; CROSS-BEDDING; ENVIRONMENT; GRAND PORTAGE ISLAND; LAKE SUPERIOR; LAKE SUPERIOR SYNCLINE; LOWER-PROTEROZOIC; MARINE; MICHIGAN; MINNESOTA; NOPEMING; ORIGIN; PETROLOGY; PUCKWUNGE FORMATION; QUARTZITE; RIPPLE MARKS; ROVE FORMATION; SEDIMENTARY STRUCTURES; SEDIMENTARY-PETROLOGY; SEDIMENTARY-ROCKS; SEDIMENTATION; SEDIMENTS; SHALLOW; UNITED-STATES; WISCONSIN;

---, 1972, Correlation of Lower Keweenawan sandstones of the Lake Superior region [abs.]: Geological Society of America Abstracts with Programs, v. 4, p. 336. ANIMIKIE; ANIMIKIE BASIN; BARABOO-QUARTZITE; BARRON-QUARTZITE; BESSEMER FORMATION; COOK COUNTY; DEPOSITIONAL ENVIRONMENT; DISCONFORMITY; LAKE SUPERIOR; LOWER-PROTEROZOIC; MICHIGAN; MINNESOTA; NOPEMING-FORMATION; ORTHOQUARTZITE; PUCKWUNGE FORMATION; ROVE FORMATION; SANDSTONE; SIOUX-QUARTZITE; THOMSON FORMATION; TYLER-FORMATION; UNITED-STATES; WISCONSIN;

---, 1972, The petrology and sedimentation of the basal Keweenawan sandstones of the north and south shores of Lake Superior [M.S. Thesis]: University of Minnesota, Duluth, 123 p. BESSEMER; CANADA; CLASTICS; DISTRICT OF THUNDER BAY; LAKE SUPERIOR; LOWER- PROTEROZOIC; MINNESOTA; NOPEMING-FORMATION; ONTARIO; OSLER GROUP; PALEOCURRENTS; PETROLOGY; PROVENANCE; PUCKWUNGE FORMATION; SANDSTONE; SEDIMENTARY STRUCTURES; SEDIMENTARY-ROCKS; SEDIMENTATION; UNITED- STATES; VOLCANIC ROCKS; WISCONSIN;

---, 1972, Puckwunge Formation of northeastern Minnesota, in Sims, P. K., and Morey, G. B., eds., Geology of Minnesota: A Centennial Volume: St. Paul, Minnesota Geological Survey, p. 412-415. ARGILLITE; CLASTICS; COMPOSITION; CONGLOMERATE; COOK COUNTY; MINNESOTA; NOPEMING; PUCKWUNGE FORMATION; SANDSTONE; SEDIMENTARY-PETROLOGY; SEDIMENTARY-ROCKS; SEDIMENTS; TERRIGENOUS; UNITED-STATES; UPPER-PRECAMBRIAN;

Mattson, L. A., 1959, Structural studies in the Thomson Formation, Carlton County, Minnesota [abs.]: 5th Annual Institute on Lake Superior Geology, Minneapolis, MN, v. 5, p. 27. ANIMIKIE; ANIMIKIE BASIN; ANIMIKIE GROUP; ANORTHOSITE; ANTICLINE; CARLTON COUNTY; CARLTON COUNTY DIKES; CLEAVAGE; DIABASE; INCLUSIONS; LOWER-PROTEROZOIC; MINNESOTA; SEDIMENTARY-ROCKS; STRUCTURAL-GEOLOGY; SYNCLINE; THICKNESS; THOMSON FORMATION; UNITED-STATES;

Mauk, J. L., Brown, A. C., Seasor, R. W., and Eldridge, C. S., 1992, Geology and stable isotope and organic geochemistry of the White Pine sediment- hosted stratiform copper deposit, in: Society of Economic Geologists, Guidebook Series, v. 13, p. 63-98. COPPER; GEOCHEMISTRY; GEOLOGY; MICHIGAN; MICHIGAN COPPER DISTRICT; MINERALIZATION; NONESUCH SHALE; ONTONAGON-COUNTY; ORGANIC GEOCHEMISTRY; ORONTO-GROUP; SEDIMENT-HOSTED; STABLE-ISOTOPES; STRATIFORM; UNITED-STATES; UPPER-PENINSULA; WHITE PINE MINE;

Mauk, J. L., Eldridge, C. S., Hieshima, G. B., Woodruff, L. G., and Seasor, R. W., 1992, An igneous contribution to sediment-hosted stratiform copper mineralization at White Pine, Michigan: A working hypothesis [abs.]: Geological Society of America Abstracts with Programs, v. 24, no. 7, p. A23. COPPER; IGNEOUS; MICHIGAN; MICHIGAN COPPER DISTRICT; MINE; MINERALIZATION; NONESUCH SHALE; ONTONAGON- COUNTY; ORONTO-GROUP; SEDIMENT-HOSTED; STRATIFORM; UNITED-STATES; UPPER-PENINSULA; WHITE PINE MINE;

Mauk, J. L., and Hieshima, G. B., 1992, Organic matter and copper mineralization at White Pine, Michigan, U.S.A: Chemical Geology, v. 99, no. 1-3, p. 189-211. ALKANES; BARITE; BASE METAL ANALYSES; BITUMENS; CALCITE; CARBON; CARBON ISOTOPES; CHALCOCITE; CHLORITE; COPPER; COPPER HARBOR CONGLOMERATE; COPPER-ORES; ECONOMIC GEOLOGY; FAULTS; FLUID INCLUSIONS; FLUIDS; FRACTURES; GENESIS; GEOCHEMICAL-CONTROLS; GEOCHEMISTRY; HYDROCARBONS; LOWER SANDSTONE; MATURATION; MICHIGAN; MICHIGAN COPPER DISTRICT; MINERAL DEPOSITS; MINERALIZATION; MONOMETHYL ALKANES; NATIVE COPPER; NONESUCH SHALE; ONTONAGON-COUNTY; ORGANIC GEOCHEMISTRY; ORGANIC-MATERIALS; ORONTO- GROUP; PETROGRAPHY; PETROLEUM; PHYTANE; PRECIPITATION; PRISTANE; PYROBITUMEN; SEDIMENTARY-ROCKS; SEDIMENTS; SOURCE-ROCKS; STABLE-ISOTOPES; STRIPEY SHALE; STRUCTURAL-GEOLOGY; SULFUR; TEAR FAULT; TEMPERATURE; THERMAL-MATURITY; THRUST-FAULTS; UNITED-STATES; UPPER-PENINSULA; VEINS; WHITE PINE MINE;

Mauk, J. L., Kelly, W. C., van der Pluijm, B. A., and Seasor, R. W., 1992, Relations between deformation and sediment-hosted copper mineralization: Evidence from the White Pine part of the Midcontinent rift system: Geology, v. 20, p. 427-430. COPPER; DEFORMATION; MICHIGAN; MICHIGAN COPPER DISTRICT; ONTONAGON-COUNTY; SEDIMENT-HOSTED; STRUCTURAL-GEOLOGY; UNITED-STATES; UPPER- PENINSULA; WHITE PINE MINE;

Mauk, J. L., and Meyers, P. A., 1990, Maturation and migration of petroleum in the Lake Superior portion of the Proterozoic Midcontinent Rift [abs.]: American Association of Petroleum Geologists Bulletin, v. 74, no. 8, p. 1307. COPPER; ECONOMIC GEOLOGY; HYDROCARBONS; MATURITY; MICHIGAN; MICHIGAN COPPER DISTRICT; MIGRATION; NONESUCH SHALE; ONTONAGON-COUNTY; ORGANIC GEOCHEMISTRY; ORONTO-GROUP; PETROLEUM; SEDIMENTARY-ROCKS; SEDIMENTS; UNITED-STATES; UPPER-PENINSULA; UPPER-WHITE PINE MINE;

Mauk, J. L., Seasor, R. W., Kelly, W. C., and van der Pluijm, B. A., 1989, The relationship between structure and second-stage copper mineralization in the White Pine district of the Midcontinent Rift, northern Michigan [abs.]: Geological Society of America Abstracts with Programs, v. 21, no. 6, p. A130. COPPER; FAULTS; FLUIDS; GROWTH-FAULTS; KEWEENAW FAULT; MICHIGAN; MICHIGAN COPPER DISTRICT; MINERALIZATION; NATIVE COPPER; ONTONAGON-COUNTY; SEDIMENT-HOSTED; STRATIFORM; STRUCTURAL-GEOLOGY; TEAR FAULT; THRUST-FAULTS; UNITED-STATES; UPPER-PENINSULA; WHITE PINE MINE;

106 Maynard, J. B., and Klein, G. D., 1995, Tectonic subsidence analysis in the characterization of sedimentary ore deposits: Examples from the Witwatersrand (Au), White Pine (Cu), and Molango (Mn): Economic Geology, v. 90, no. 1, p. 37-50. AFRICA; ARCHEAN; COPPER; EXPLORATION; FAULTS; FORELAND-BASINS; FREDA-SANDSTONE; GOLD; HUAYACOCOTLA BASIN; JACOBSVILLE-SANDSTONE; JURASSIC; KEWEENAW FAULT; MANGANESE; MESOZOIC; MEXICO; MICHIGAN; MICHIGAN COPPER DISTRICT; MINERALIZATION; MODEL; MOLANGO; NONESUCH SHALE; ONTONAGON-COUNTY; ORE-DEPOSITS; ORONTO-GROUP; PELTON CREEK FAULT; PHANEROZOIC; SEDIMENTARY-ROCKS; SIERRA MADRE ORIENTAL; SOUTH AFRICA; STRUCTURAL-GEOLOGY; SUBSIDENCE; TECTONICS; THERMAL SUBSIDENCE; THRUST FAULT; UNITED-STATES; UPPER-PENINSULA; WHITE PINE MINE; WITWATERSRAND BASIN; WITWATERSRAND SUPERGROUP;

McCabe, C., and Van der Voo, R., 1981, Paleomagnetic results from the Chequamegon Formation (Keweenawan), Apostle Islands, Wisconsin [abs.]: Eos (American Geophysical Union Transactions), v. 62, p. 271. APOSTLE-ISLANDS; ASHLAND COUNTY; CHEQUAMEGON-FORMATION; CLASTIC-ROCKS; GEOPHYSICS; MAGNETIC-INTENSITY; NATURAL REMANENT MAGNETIZATION; PALEOMAGNETISM; RED- BEDS; REMANENT-MAGNETIZATION; SEDIMENTARY-ROCKS; SEDIMENTS; STRATIGRAPHY; UNITED-STATES; WISCONSIN;

---, 1983, Paleomagnetic results from the upper Keweenawan Chequamegon Sandstone; implications for red bed diagenesis and late Precambrian apparent polar wander of North America: Canadian Journal of Earth Sciences, v. 20, no. 1, p. 105-112. APOSTLE-ISLANDS; ASHLAND COUNTY; BAYFIELD-COUNTY; CHEQUAMEGON-FORMATION; CLASTIC-ROCKS; DEMAGNETIZATION; GEOPHYSICS; PALEOMAGNETISM; SANDSTONE; SEDIMENTARY-ROCKS; SEDIMENTS; STRATIGRAPHY; UNITED-STATES; UPPER-PROTEROZOIC; WISCONSIN;

McCabe, C., Van der Voo, R., and Watts, D. R., 1980, Paleomagnetic results from the upper Keweenawan Chequamegon Formation, Apostle Islands, Wisconsin [abs.]: Eos (American Geophysical Union Transactions), v. 61, no. 48, p. 1195-1196. APOSTLE-ISLANDS; CHEQUAMEGON- FORMATION; EILEEN-SANDSTONE; FOND DU LAC FORMATION; FREDA-SANDSTONE; GEOPHYSICS; JACOBSVILLE-SANDSTONE; ORIENTA-FORMATION; ORONTO-GROUP; PALEOMAGNETISM; SANDSTONE; SEDIMENTARY-ROCKS; SEDIMENTS; STRATIGRAPHY; UNITED-STATES; UPPER-WISCONSIN;

McCabe, C. L., 1982, Paleomagnetic results from the upper Keweenawan Chequamegon Sandstone and implications for red bed diagenesis and late Precambrian apparent polar wander of North America [M.S. Thesis]: University of Michigan, Ann Arbor CHEQUAMEGON-FORMATION; CLASTIC-ROCKS; DIAGENESIS; GEOPHYSICS; MATERIALS; PALEOMAGNETISM; POLAR-WANDERING; RED-BEDS; SEDIMENTARY- ROCKS; SEDIMENTS; STRATIGRAPHY; UPPER-UPPER-PENINSULA;

McCallister, R. H., Boctor, N. Z., and Hinze, W. J., 1976, Petrology of selected igneous rocks from the Michigan Basin deep drill hole [abs.]: Eos (American Geophysical Union Transactions), v. 57, p. 760. BOREHOLE; GRATIOT-COUNTY; IGNEOUS-ROCKS; LOWER PENINSULA; MCCLURE-SPARKS NO. 1; MICHIGAN; MICHIGAN-BASIN; PETROLOGY; UNITED-STATES;

---, 1978, Petrology of the spilitic rocks of the Michigan Basin deep drill hole: Journal of Geophysical Research, v. 83, p. 5825-5831. ACTINOLITE; ALTERATION; ANATASE; BASALT; BOREHOLE; BORNITE; CHALCOPYRITE; CHLORITE; CLINOPYROXENE; COPPER; DIGENITE; EPIDOTE; GRATIOT-COUNTY; GREENSCHIST-FACIES; ILMENITE; LOWER PENINSULA; MCCLURE-SPARKS NO. 1; METAMORPHISM; MICHIGAN; MICHIGAN-BASIN; MINERAL CHEMISTRY; NATIVE COPPER; PETROLOGY; PLAGIOCLASE; POTASSIUM FELDSPAR; PYROXENE; SPHENE; SPILITE; SULFIDE; UNITED-STATES;

McCaslin, J. C., 1984, Iowa portion of rift trend hosts wildcats: Oil and Gas Journal, v. 82, no. 19, p. 213-214. ECONOMIC GEOLOGY; EXPLORATION; IOWA; MILLS-COUNTY; NONESUCH SHALE; ORONTO-GROUP; PETROLEUM; SEDIMENTARY-ROCKS; SEDIMENTS; UNITED-STATES;

McChesney, R. D. R., 1956, Stress investigation conducted on the shaft pillar, Ahmeek mine number three shaft, Calumet and Hecla Incorporated, Ahmeek, Michigan [M.S. Thesis]: Michigan Technological University, Houghton, 73 p. AHMEEK MINE; COPPER; KEWEENAW COUNTY; MICHIGAN; MICHIGAN COPPER DISTRICT; MINE; MINING; ROCK-MECHANICS; STRESS; UNITED-STATES; UPPER-PENINSULA;

McConnell, R. G., 1926, Sault Ste. Marie, District of Algoma, in: Ontario Department of Mines, 35th Annual Report, part 2, p. 1-52. CANADA; DISTRICT OF ALGOMA; ONTARIO; SANDSTONE; SAULT STE. MARIE; SEDIMENTARY-ROCKS; SEDIMENTS;

McCuaig, J. A., 1950, A copper-nickel occurrence in Pardee Township, Thunder Bay district, Ontario [M.S. Thesis]: McGill University, Montreal, Quebec, 61 p. CANADA; COPPER; DISTRICT OF THUNDER BAY; MINERALIZATION; NICKEL; ONTARIO; PARDEE TOWNSHIP; SULFIDES;

McCuaig, T. C., and Kissin, S. A., 1995, The Port Coldwell veins, northern Ontario: Pb-Zn-Ag deposits in a rift setting [abs.], in Ojakangas, R. W., Dickas, A. B., and Green, J. C., eds., Basement Tectonics 10: Proceedings of the Tenth International Conference on Basement Tectonics: Netherlands, Kluwer Academic Publishers, v. 4, p. 15-18. ALKALIC COMPLEX; ALKALINE; ALKALINE INTRUSION; BRECCIATION; CANADA; CHALCOPYRITE; COLDWELL COMPLEX; COVELLITE; DIGENITE; DISTRICT OF THUNDER BAY; FLUID INCLUSIONS; FREIBERGITE; GALENA; HOMOGENIZATION TEMPERATURE; LEAD; MINERALIZATION; ONTARIO; ORE GRADE; ORIGIN; PORT COLDWELL; PYRITE; SALINITY; SILVER; SPHALERITE; STABLE-ISOTOPES; SULFUR ISOTOPES; TEMPERATURE; VEINS; ZINC;

McDermott, M. P., 1985, Chemical characterization of the Unnamed Formation; a central volcanic complex of Keweenawan age [abs.]: 31st Annual Institute on Lake Superior Geology, Kenora, ONT, v. 31, p. 54. BERGLAND; COPPER HARBOR CONGLOMERATE; EVOLUTION; GEOCHEMISTRY; IGNEOUS-ROCKS; LAVA-FLOWS; MICHIGAN; ORONTO-GROUP; PETROLOGY; PORCUPINE MOUNTAINS; PORTAGE LAKE VOLCANICS; SEDIMENTARY-ROCKS; SEDIMENTS; THOMASTON; UNITED-STATES; UNNAMED-FORMATION; UPPER-PENINSULA; VOLCANIC ROCKS;

107 McDowell, S. D., Price, K. L., Huntoon, J., and Bornhorst, T. J., 1992, Thermal modeling and illite/smectite geothermometry of the Precambrian Oronto Group, Wisconsin and Michigan [abs.]: 38th Annual Institute on Lake Superior Geology, Hurley, WI, v. 38, p. 59-60. CLAY MINERALS; DIAGENESIS; DO-14; DO-5; FAULT; FREDA-SANDSTONE; GEOTHERMAL-GRADIENT; GEOTHERMOMETRY; ILLITE; KEWEENAW FAULT; KEWEENAW PENINSULA; MICHIGAN; MICHIGAN COPPER DISTRICT; MODELLING; NONESUCH SHALE; ONTONAGON- COUNTY; ORONTO-GROUP; SANDSTONE; SMECTITE; STRUCTURAL-GEOLOGY; THERMAL; THERMAL-MATURITY; UNITED- STATES; UPPER-PENINSULA; WHITE PINE MINE; WHITE PINE-IRON RIVER SYNCLINE; WISCONSIN; WP; WPB-1;

McGill, M., 1980, The Coldwell Complex western margin - petrology and intrusive relationships [H.B.Sc. Thesis]: Lakehead University, Thunder Bay, Ontario, Canada, 98 p. ALKALIC COMPLEX; ALKALINE; ALKALINE INTRUSION; CANADA; COLDWELL COMPLEX; DISTRICT OF THUNDER BAY; ONTARIO; PETROLOGY; PORT COLDWELL; PROTEROZOIC;

McGinnis, L. D., 1970, Tectonics and gravity field in the continental interior: Journal of Geophysical Research, v. 75, p. 317-331. CAMBRIAN; FREE-AIR GRAVITY ANOMALIES; GEOPHYSICS; GRAVITY; GRAVITY-ANOMALIES; GRAVITY-SURVEYS; ILLINOIS; LOWER PENINSULA; MICHIGAN; MICHIGAN-BASIN; PALEOZOIC; PHANEROZOIC; TECTONICS; UNITED-STATES;

---, 1990, Lake Superior rift basins [abs.]: Eos (American Geophysical Union Transactions), v. 71, p. 995. PROTEROZOIC; UNITED-STATES;

McGinnis, L. D., Cannon, W. F., Dickas, A. B., Ervin, C. P., Green, A., Hinze, W. J., Milkereit, B., Morey, G. B., Mudrey, M. G., Nyquist, J., Sexton, J. L., and Wang, H. F., 1989, Geophysical and tectonic study of sedimentary basins and the upper crust beneath Lake Superior [abs.]: Eos (American Geophysical Union Transactions), v. 70, p. 272. CANADA; CRUST; GAS; GEOPHYSICS; GLIMPCE; GRAVITY; HYDROCARBONS; LAKE SUPERIOR; MAGNETICS; OIL; ONTARIO; REFLECTION; SEDIMENTARY-BASINS; SEISMIC; SEISMIC-SURVEYS; TECTONICS; UNITED-STATES;

McGinnis, L. D., Carlson, D. R., Pederson, R., and Schafersman, J. S., 1977, Simple Bouguer gravity map of Minnesota, Stillwater Sheet: Minnesota Geological Survey, Miscellaneous Map Series, Map M-35, scale 1:250,000. BASEMENT; BOUGUER-ANOMALIES; GEOPHYSICS; GRAVITY; MAP; MINNESOTA; UNITED-STATES;

McGinnis, L. D., and Mudrey, M. G., Jr., 1991, Seismic reflection profiling and tectonic evolution of the Midcontinent Rift in Lake Superior:, Wisconsin Geological and Natural History Survey, Miscellaneous Paper 91-2, EVOLUTION; GEOPHYSICS; LAKE SUPERIOR; REFLECTION; SEISMIC; TECTONICS; UNITED-STATES;

McGoran, J., 1987, Prefeasibility study on Marathon property, Fleck Resources Limited: Resident Geologist's files, District of Thunder Bay, Thunder Bay, Ontario, Canada. ALKALIC COMPLEX; ALKALINE; ALKALINE INTRUSION; CANADA; COLDWELL COMPLEX; COPPER; DISTRICT OF THUNDER BAY; ECONOMIC GEOLOGY; FEASIBILITY STUDY; MARATHON; NICKEL; ONTARIO; PGE; PLATINUM- GROUP ELEMENTS; PORT COLDWELL; PROTEROZOIC;

McGovern, M. G., Craddock, J. P., and Webers, G. F., 1993, Evidence for late Paleozoic displacement on the Keweenawan thrust fault from folded Paleozoic outliers in Michigan's upper peninsula [abs.]: 39th Annual Institute on Lake Superior Geology, Eveleth, MN, v. 39, p. 56-57. BIOSTRATIGRAPHY; CONODONTS; DEVONIAN; FAULTS; FOLDING; FOLDS; FOSSILS; IMPACT; JACOBSVILLE-SANDSTONE; LIMESTONE; LIMESTONE MOUNTAIN; MICHIGAN; MICROTEKTITES; MINERAL CHEMISTRY; ORDOVICIAN; OUTLIERS; PALEOZOIC; PHANEROZOIC; REACTIVATION; SANDSTONE; SHERMAN HILL; STRAIN; STRUCTURAL-GEOLOGY; SYNCLINE; THRUST FAULT; UNITED-STATES; UPPER-PENINSULA;

McHugh, J. B., Ficklin, W. H., and Miller, W. R., 1990, Analytical results for 41 water samples from the South Kawishiwi River study area, northeastern Minnesota:, U. S. Geological Survey, Open-file Report 90-419, 8 p. DULUTH COMPLEX; GEOCHEMISTRY; LAYERED INTRUSION; MINNESOTA; SOUTH KAWISHIWI; SOUTH KAWISHIWI INTRUSION; SOUTH KAWISHIWI RIVER; UNITED-STATES; WATER;

McIlwaine, W. H., and Wallace, H., 1972, Geology of Black Bay Peninsula, District of Thunder Bay:, Ontario Division of Mines, Open File Report 5082, 98 p. BASALT; BLACK BAY PENINSULA; CANADA; DISTRICT OF THUNDER BAY; GEOLOGY; ONTARIO; OSLER GROUP; VOLCANIC ROCKS;

---, 1972, Stratigraphy, petrography and chemistry of the Late Precambrian Osler Group, District of Thunder Bay, Ontario [abs.]: Geological Society of America Abstracts with Programs, v. 4, no. 7, p. 590. BASALT; CANADA; DISTRICT OF THUNDER BAY; GEOCHEMISTRY; ONTARIO; OSLER GROUP; PETROGRAPHY; STRATIGRAPHY; VOLCANIC ROCKS;

---, 1976, Geology of the Black Bay Peninsula area, District of Thunder Bay:, Ontario Division of Mines, Geoscience Report 133, 54 p. BASALT; BLACK BAY PENINSULA; CANADA; DISTRICT OF THUNDER BAY; FELSIC; GEOLOGY; INTERFLOW SEDIMENTS; MAFIC; METAMORPHISM; ONTARIO; OSLER GROUP; PREHNITE-PUMPELLYITE FACIES; VOLCANIC ROCKS; ZEOLITE-FACIES;

McKay, R. M., 1990, The problem of the Cambrian-"Red Clastics" contact in the M. G. Eischeid #1 well, in Anderson, R. R., ed., The Amoco M.G. Eischeid #1 deep petroleum test, Carroll County, Iowa: Report of preliminary investigations: Iowa City, Iowa Department of Natural Resources Geological Survey Bureau, Special Report Series #2, p. 59-66. CARROLL COUNTY; CLASTICS; DRILL HOLE; IOWA; M.G. EISCHEID NO. 1; RED CLASTICS; SEDIMENTARY-ROCKS; UNITED-STATES;

McKenna, M. P., Gladen, L. W., Vadis, M. K., and Meineke, D. G., 1979, Mineral survey and mineral potential of Cook County, Minnesota [abs.]: 25th Annual Institute on Lake Superior Geology, Duluth, MN, v. 25, p. 30. BOUNDARY WATERS CANOE AREA; BWCA; COOK COUNTY; COPPER; DULUTH COMPLEX; IRON; LOGAN SILLS; LOWER-PROTEROZOIC; MINERAL POTENTIAL; MINERALIZATION; MINNESOTA; NICKEL; ROVE FORMATION; SILLS; SILVER; TITANIUM; UNITED-STATES; VEINS; ZINC;

108 McLaughlin, R. M., 1990, Accessory rare-metal mineralisation in the Coldwell Alkaline Complex, northwestern Ontario [M.Sc. Thesis]: Lakehead University, Thunder Bay, Ontario, Canada, 123 p. ALKALIC COMPLEX; ALKALINE; ALKALINE INTRUSION; CANADA; COLDWELL COMPLEX; DISTRICT OF THUNDER BAY; MINERALIZATION; ONTARIO; PORT COLDWELL; RARE-EARTH ELEMENTS; REE;

McLaughlin, R. M., and Mitchell, R. H., 1989, Rare metal mineralization in the Coldwell alkaline complex, northwestern Ontario [abs.]: Geological Association of Canada/Mineralogical Association of Canada Program with Abstracts, v. 14, p. A1. ALKALIC COMPLEX; ALKALINE; ALKALINE INTRUSION; CANADA; COLDWELL COMPLEX; DISTRICT OF THUNDER BAY; MINERALIZATION; ONTARIO; PORT COLDWELL; RARE-EARTH ELEMENTS; REE;

McMahon, D. A., and Kneller, W. A., 1986, Source rock potential of Nonesuch Shale, White Pine District, Michigan [abs.]: American Association of Petroleum Geologists Bulletin, v. 70, no. 5, p. 619. BITUMENS; COPPER; ECONOMIC GEOLOGY; FUEL-RESOURCES; GEOCHEMISTRY; HYDROCARBONS; MICHIGAN; MICHIGAN COPPER DISTRICT; NONESUCH SHALE; OIL; ONTONAGON-COUNTY; ORGANIC GEOCHEMISTRY; ORGANIC-MATERIALS; ORONTO-GROUP; SEDIMENTARY-ROCKS; SEDIMENTS; SOURCE-ROCKS; UNITED- STATES; UPPER-PENINSULA; WHITE PINE MINE;

McQuaig, T. C., and Kissin, S. A., 1992, The Port Coldwell veins, northern Ontario: Pb-Zn-Ag deposits in a rift setting [abs.]: 10th International Conference on Basement Tectonics, Duluth, MN, Program with Abstracts, p. 187-189. ALKALIC COMPLEX; ALKALINE; ALKALINE INTRUSION; CANADA; COLDWELL COMPLEX; DISTRICT OF THUNDER BAY; LEAD; MINERALIZATION; ONTARIO; PORT COLDWELL; SILVER; VEINS; ZINC;

McRostie, C. N., 1974, The socio-economic dimension of copper-nickel mining in Minnesota: Naturalist, v. 25, no. 2/3, p. 30-32. COPPER; DULUTH COMPLEX; ECONOMICS; MINING; MINNESOTA; NICKEL; REGIONAL COPPER-NICKEL STUDY; SULFIDES; UNITED- STATES;

McSwiggen, P. L., 1982, Uranium in Lower Proterozoic phosphate-rich metasedimentary rocks of east-central Minnesota [abs.]: 28th Annual Institute on Lake Superior Geology, International Falls, MN, v. 28, p. 25. ANIMIKIE; ANIMIKIE BASIN; ANIMIKIE GROUP; BARITE; CHLORITE FACIES; DISSEMINATED ORE; FOND DU LAC FORMATION; LOWER-PROTEROZOIC; METAMORPHISM; METASEDIMENTARY- ROCKS; MINERALIZATION; MINNESOTA; PARAGENESIS; PHOSPHATE-DEPOSITS; PYRITE; SULFIDES; THOMSON FORMATION; UNITED-STATES; URANIUM;

McSwiggen, P. L., Morey, G. B., and Chandler, V. W., 1987, New model of the Midcontinent rift in eastern Minnesota and western Wisconsin: Tectonics, v. 6, p. 677-685. MINNESOTA; MODEL; UNITED-STATES; WISCONSIN;

McSwiggen, P. L., Morey, G. B., and Weiblen, P. W., 1981, Uranium in lower Proterozoic, apatite-bearing rock of east-central Minnesota [abs.]: Geological Society of America Abstracts with Programs, v. 13, p. 508. ANIMIKIE; ANIMIKIE BASIN; ECONOMIC GEOLOGY; FOND DU LAC FORMATION; GENESIS; LOWER-PROTEROZOIC; METAMORPHIC-ROCKS; METASEDIMENTARY-ROCKS; MINERAL DEPOSITS; MINERALIZATION; MINNESOTA; PINE-COUNTY; PROCESSES; SEDIMENTARY-ROCKS; SEDIMENTS; THOMSON FORMATION; UNITED-STATES; URANIUM;

Meineke, D. G., Vadis, M. K., and Klaysmat, A. W., 1977, Pilot study on soil exploration geochemistry, Birch Lake area, Lake County, Minnesota:, Minnesota Department of Natural Resources, Division of Minerals, Report 108-2, 19 p. BIRCH LAKE; DULUTH COMPLEX; EXPLORATION; GEOCHEMISTRY; LAKE COUNTY; LAYERED INTRUSION; MINNESOTA; SOIL; SOIL GEOCHEMISTRY; UNITED-STATES;

---, 1977, Pilot study on stream sediment exploration geochemistry, Filson Creek, Lake County, Minnesota:, Minnesota Department of Natural Resources, Division of Minerals, Report 109, 32 p. COPPER; DULUTH COMPLEX; EXPLORATION; FILSON CREEK; GEOCHEMISTRY; LAKE COUNTY; LAYERED INTRUSION; MINERAL DEPOSIT; MINERALIZATION; MINNESOTA; NICKEL; SEDIMENT; SOUTH FILSON CREEK; SOUTH KAWISHIWI INTRUSION; SPRUCE ROAD; STREAM; STREAM-SEDIMENTS; SULFIDES; UNITED-STATES;

---, 1978, Pilot study on A-horizon soil exploration geochemistry, Birch Lake area, Lake County, Minnesota:, Minnesota Department of Natural Resources, Division of Minerals, Report 108-3, 96 p. A-HORIZON; DULUTH COMPLEX; EXPLORATION; GEOCHEMISTRY; LAKE COUNTY; LAYERED INTRUSION; MINNESOTA; SOIL; SOIL GEOCHEMISTRY; UNITED-STATES;

Meinschein, W. G., Barghoorn, E. S., and Schopf, J. W., 1964, Biological remnants in a Precambrian sediment: Science, v. 145, p. 262-263. ALKANES; COPPER; GEOCHEMISTRY; HYDROCARBONS; MICHIGAN; MICHIGAN COPPER DISTRICT; MICROFOSSILS; NONESUCH SHALE; ONTONAGON-COUNTY; ORGANIC GEOCHEMISTRY; ORONTO-GROUP; PHYTANE; PORPHYRINS; PRISTANE; UNITED- STATES; UPPER-PENINSULA; WHITE PINE MINE;

Melnik, N., 1984, Textural evidence for the origin of the Prairie Lake carbonatite-alkalic rock complex [B.Sc. Thesis]: Queen's University, Kingston, Ontario, Canada, 81 p. ALKALIC COMPLEX; CANADA; CARBONATITE; DISTRICT OF THUNDER BAY; ONTARIO; ORIGIN; PETROGRAPHY; PRAIRIE LAKE CARBONATITE COMPLEX; PROTEROZOIC;

Melosh, H. J., 1989, Impact Cratering, a Geologic Process: Oxford Monographs on Geology and Geophysics, Oxford University, Oxford Monographs on Geology and Geophysics, No. 11, 245 p. IMPACTS; IOWA; METEOR CRATERS; METEORS; UNITED-STATES;

Mendelsohn, A., 1931, Mining methods and costs at the Champion copper mine, Painesdale, Michigan:, U. S. Bureau of Mines, I.C. 6515, 16 p. CHAMPION MINE; MICHIGAN; MINE; MINING COSTS; MINING-METHODS; NATIVE COPPER; PAINESDALE; UNITED-STATES; UPPER-PENINSULA;

Mengel, J. T., Jr., 1971, The geology of the Twin Ports area, Wisconsin-Minnesota: Superior, Wisconsin State University, Geology Department, Thirty-Fifth Annul Tri-State Field Conference, 82 p. AMNICON FALLS; ANIMIKIE; ANIMIKIE BASIN; ANIMIKIE GROUP; CARLTON

109 COUNTY; CENOZOIC; COPPER; DOUGLAS-COUNTY; DOUGLAS-FAULT; DULUTH COMPLEX; DULUTH LAYERED SERIES; GLACIAL GEOLOGY; GUIDEBOOK; LAKE SUPERIOR; LOWER-PROTEROZOIC; MINERALIZATION; MINNESOTA; NATIVE COPPER; NOPEMING- FORMATION; NORTH SHORE VOLCANIC GROUP; PHANEROZOIC; PLEISTOCENE; QUATERNARY; ST. LOUIS COUNTY; SULFIDE; THOMSON FORMATION; UNITED-STATES; WISCONSIN;

---, 1972, Subsurface geology of the Duluth-Superior area, Minnesota-Wisconsin [abs.]: 18th Annual Institute on Lake Superior Geology, Houghton, MI, v. 18, Paper 14, 4 p. BASALTS; BAYFIELD-GROUP; CENOZOIC; CLASTICS; DOUGLAS-COUNTY; DOUGLAS-FAULT; DRILL HOLE SURVEY; DULUTH COMPLEX; EROSION; FAULTS; GLACIAL LAKE DULUTH; MINNESOTA; PHANEROZOIC; PLEISTOCENE; QUATERNARY; RED CLASTICS; SAINT CROIX HORST; SANDSTONE; SEDIMENTARY-ROCKS; SEDIMENTS; SOUTH RANGE; ST. LOUIS COUNTY; ST. LOUIS RIVER; STRUCTURAL-GEOLOGY; SUBSURFACE; UNCONFORMITY; UNITED-STATES; WISCONSIN;

Mereu, R. F., 1965, A study of apparent angle of emergence at Marathon Ontario from the Lake Superior data: Bulletin of the Seismological Society of America, v. 55, p. 405-416. ALKALIC COMPLEX; ALKALINE; ALKALINE INTRUSION; CANADA; COLDWELL COMPLEX; DISTRICT OF THUNDER BAY; GEOPHYSICS; LAKE SUPERIOR; ONTARIO; PORT COLDWELL; PROTEROZOIC;

Mereu, R. F., and Epili, D., 1989, A comparison of signal characteristics of GLIMPCE refraction data from lines across the Midcontinent Rift System in Lake Superior and the Grenville Frontal Zone in Lake Huron [abs.]: Eos (American Geophysical Union Transactions), v. 70, no. 15, p. 277. GEOPHYSICS; GLIMPCE; GRENVILLE; GRENVILLE FRONT TECTONIC ZONE; GRENVILLE-FRONT; LAKE SUPERIOR; LAKE-HURON; REFRACTION; SEISMIC; SEISMIC-SURVEYS;

Merk, G. P., and Jirsa, M. A., 1982, Provenance and tectonic significance of the Keweenawan interflow sedimentary rocks, in Wold, R. J., and Hinze, W. J., eds., Geology and tectonics of the Lake Superior basin:, Geological Society of America, Memoir 156, p. 97-106. CANADA; CLASTIC- ROCKS; COMPOSITION; KEWEENAWAN-SUPERGROUP; LAKE SUPERIOR REGION; ONTARIO; PALEOCURRENTS; PROVENANCE; RED-BEDS; SEDIMENTARY-PETROLOGY; SEDIMENTARY-ROCKS; SEDIMENTATION; SEDIMENTS; TECTONIC-CONTROLS;

Meshref, W. M., and Hinze, W. J., 1970, Geologic interpretations of aeromagnetic data in western Upper Peninsula of Michigan:, Michigan Department of Natural Resources, Report of Investigation 12, 25 p. AEROMAGNETIC ANOMALY; AEROMAGNETICS; GEOLOGY; GEOPHYSICS; MICHIGAN; UNITED-STATES; UPPER-PENINSULA;

Meuschke, J. L., Tyson, N. S., and others, 1963, Aeromagnetic map of the northern part of Lake County, Minnesota: U. S. Geological Survey, Geophysical Investigations, Map GP-360. AEROMAGNETICS; ARCHEAN; DULUTH COMPLEX; GEOPHYSICS; GRANITE; GREENSTONE BELTS; GUNFLINT IRON-FORMATION; LAKE COUNTY; LAYERED INTRUSION; MAP; MINNESOTA; UNITED-STATES;

Meyer, H. O. A., 1976, Kimberlites of the continental United States: A review: Journal of Geology, v. 84, no. 4, p. 377-403. AEROMAGNETIC ANOMALY; AEROMAGNETICS; AMERICAN MINE; ARIZONA; ARKANSAS; AUGUSTA COUNTY; BLACK LICK; BRECCIA; BUELL PARK DIATREME; CANE VALLEY DIATREME; CARBON ISOTOPES; CENOZOIC; CLEVELAND COUNTY; COLORADO; COLORADO PLATEAU; COLORADO PLATEAU KIMBERLITES; CRETACEOUS; CRITTENDEN COUNTY; CRUST; DEVONIAN; DIAMONDS; DIATREME; DIKES; ECLOGITE; ELLIOTT COUNTY; EOCENE; FAULTS; FAYETTE COUNTY; GARNET; GARNET RIDGE DIATREME; GEOCHEMISTRY; GEOCHRONOLOGY; GEOPHYSICS; GREEN KNOBS KIMBERLITE; GREEN MOUNTAIN KIMBERLITE; HOST ROCKS; HYPABYSSAL; HYPABYSSAL FACIES; ILLINOIS; INDIANA COUNTY; JURASSIC; KANSAS; KENTUCKY; KIMBERLITE MINE; KIMBERLITES; LAMPROITES; LHERZOLITE; LOWER-CRUST; MAGNETIC-ANOMALIES; MAJOR ELEMENT ANALYSES; MESOZOIC; MINERALOGY; MISSISSIPPI; MISSOURI; MONTANA; MOSES ROCK DIATREME; MULE EAR DIATREME; NEW MEXICO; NEW YORK; NORRIS KIMBERLITE; ORDOVICIAN; PALEOZOIC; PENNSYLVANIA; PERIDOTITIC GARNETS; PERMIAN; PHANEROZOIC; PHLOGOPITE; PIKE COUNTY; PIPE; PRAIRIE CREEK LAMPROITE; PYROCLASTIC; RED MESA DIATREME; RED MESA KIMBERLITE; RILEY COUNTY; ROCKBRIDGE COUNTY; SILURIAN; SLOAN DIATREME; SLOAN KIMBERLITE; ST. FRANCOIS COUNTY; STABLE- ISOTOPES; STATE LINE DISTRICT; STE. GENEVIEVE COUNTY; STOCKDALE KIMBERLITE; STOCKDALE PIPE; STRUCTURAL- GEOLOGY; TENNESSEE; TRACE ELEMENT ANALYSES; TUFF; UNITED-STATES; UPPER-PROTEROZOIC; UTAH; VIRGINIA; WYOMING; XENOCRYSTS;

Meyer, P. J., Karl, J. H., and Jefferson, T. J., 1989, Beamsteering applied to the GLIMPCE wide-angle data: Line A [abs.]: Eos (American Geophysical Union Transactions), v. 70, no. 15, p. 276. GEOPHYSICS; GLIMPCE; SEISMIC LINE A; WIDE ANGLE;

Meyer, R. P., and Green, W. V., 1988, Comparison of the Keweenaw and Gregory Rifts from the study of teleseismic delay times and Bouguer gravity [abs.]: 34th Annual Institute on Lake Superior Geology, Marquette, MI, v. 34, p. 71. AFRICA; BOUGUER-ANOMALIES; GEOPHYSICS; GRAVITY; GREGORY-RIFT; KENYA; MINNESOTA; SEISMIC; SEISMIC-SURVEYS; UNITED-STATES;

---, 1989, Unexploited seismological opportunities for the study of the total crust-mantle structure of rifts [abs.]: Eos (American Geophysical Union Transactions), v. 70, no. 15, p. 274. AFRICA; CANADA; COCORP; COMPRESSIONAL WAVE; CRUST; CRUSTAL STRUCTURE; EXPERIMENTAL STUDIES; GEOPHYSICS; GLIMPCE; KANSAS; KENYA RIFT; LAKE SUPERIOR; MANTLE; ONTARIO; RIFTS; S- WAVES; SEISMIC; SEISMIC-SURVEYS; SEISMOMETER; SHEAR WAVE; STRUCTURAL-GEOLOGY; TELESEISMIC; UNITED-STATES;

Meyer, R. P., Moore, J. R., Nebrija, E. L., and Young, C. T., 1976, Geophysical prospecting of Keweenaw Peninsula [abs.]: 22nd Annual Institute on Lake Superior Geology, St. Paul, MN, v. 22, p. 39. BETE GRISE BAY; COPPER; COPPER-HARBOR; EXPLORATION; FIVE-MILE POINT; GEOPHYSICS; GREAT SAND BAY; KEWEENAW FAULT; KEWEENAW PENINSULA; MAGNETICS; MAGNETOTELLURIC; MAGNETOTELLURIC-SURVEYS; MICHIGAN; MICHIGAN COPPER DISTRICT; MINERALIZATION; MONTREAL-RIVER; NONESUCH SHALE; PLACERS; RESISTIVITY; RESISTIVITY SURVEY; SEISMIC; SEISMIC-SURVEYS; SEVEN-MILE POINT; SILVER ISLAND; UNITED-STATES; UPPER-PENINSULA; VEINS;

110 Meyer, R. P., and Ocola, L., 1967, Relationships between seismic and aeromagnetic surveys, eastern Lake Superior [abs.]: 13th Annual Institute on Lake Superior Geology, East Lansing, MI, v. 13, p. 28. AEROMAGNETIC SURVEY; AEROMAGNETICS; FAULTS; GEOPHYSICS; LAKE SUPERIOR; SEISMIC; SEISMIC-SURVEYS; STRUCTURAL-GEOLOGY; UNITED-STATES;

Meyer, R. P., and Ocola, L. C., 1967, Structural dislocation in Lake Superior from seismic profile methods [abs.]: Eos (American Geophysical Union Transactions), v. 48, p. 1. GEOPHYSICS; LAKE SUPERIOR; SEISMIC; SEISMIC-SURVEYS; UNITED-STATES;

Meyers, P. A., 1992, Organic matter in the Nonesuch Formation and Copper Harbor Conglomerate: an overview of comparisons of mineralized and nonmineralized sections [abs.]: Geological Society of America Abstracts with Programs, v. 24, no. 7, p. A107. ALTERATION; BLACK-SHALE; CLASTIC-ROCKS; COPPER; COPPER HARBOR CONGLOMERATE; COPPER-ORES; GEOCHEMISTRY; MICHIGAN; MICHIGAN COPPER DISTRICT; MINERALIZATION; NONESUCH SHALE; OIL-SEEPS; ORE FORMING FLUIDS; ORGANIC GEOCHEMISTRY; ORGANIC- CARBON; ORGANIC-MATERIALS; ORONTO-GROUP; SEDIMENTARY-ROCKS; SEDIMENTS; SILVER; SILVER-ORES; UNITED-STATES; UPPER-PENINSULA;

Meyers, P. A., Kettler, R. M., and Ho, E. S., 1988, Organic matter in sediment-hosted ore deposits; Paleozoic lead-zinc ores and Proterozoic copper- silver ores [abs.]: Terra Cognita, v. 8, no. 3, p. 219. COPPER; ECONOMIC GEOLOGY; GEOCHEMISTRY; IGCP; LEAD; LEAD ZINC DEPOSITS; MICHIGAN; MICHIGAN COPPER DISTRICT; MISSISSIPPI VALLEY TYPE; NONESUCH SHALE; ONTONAGON-COUNTY; ORE-DEPOSITS; ORGANIC GEOCHEMISTRY; ORGANIC-MATERIALS; ORONTO-GROUP; SEDIMENT-HOSTED; SEDIMENTARY- ROCKS; SEDIMENTS; SILVER; SILVER-ORES; UNITED-STATES; UPPER-PENINSULA; WHITE PINE MINE; ZINC;

Meyers, W. D., II, 1971, The sedimentology and tectonic significance of the Bayfield Group (Upper Keweenawan?) Wisconsin and Minnesota [Ph.D. Dissertation]: University of Wisconsin, Madison, 259 p. BAYFIELD-GROUP; SEDIMENTARY-ROCKS; SEDIMENTOLOGY; TECTONICS; UNITED-STATES;

Middleton, R., Murray, J., and Aho, G., 1969, A reconnaissance palaeomagnetic study of the South Range lava series in the western Upper Peninsula of Michigan [abs.]: 15th Annual Institute on Lake Superior Geology, Oshkosh, WI, v. 15, p. 23. BOND FALLS; GEOPHYSICS; MICHIGAN; PALEOMAGNETISM; SILVER MOUNTAIN; SOUTH RANGE; UNITED-STATES; UPPER-PENINSULA; WAKEFIELD;

Milanovsky, E. E., 1981, Aulocogens of ancient platforms: Problems of their origin and tectonic development: Tectonophysics, v. 73, p. 213-248. AULACOGEN; ORIGIN; PLATE TECTONICS; RIFTING; UNITED-STATES;

Milavec, G. J., 1986, The Nonesuch Formation; Precambrian sedimentation in an intracratonic rift [M.S. Thesis]: University of Oklahoma, Norman, 142 p. ENVIRONMENT; FAILED-RIFTS; FLUVIAL-ENVIRONMENT; KEWEENAWAN-TROUGH; LACUSTRINE-ENVIRONMENT; LITHOFACIES; MICHIGAN; NONESUCH SHALE; ORONTO-GROUP; PETROLOGY; SEDIMENTARY-PETROLOGY; SEDIMENTARY- ROCKS; SEDIMENTATION; SEDIMENTS; UNITED-STATES; UPPER-PENINSULA; WISCONSIN;

Milkereit, B., Green, A. G., Lee, M. W., Agena, W. F., and Spencer, C., 1990, Pre- and poststack migration of GLIMPCE reflection data: Tectonophysics, v. 173, p. 1-13. GEOPHYSICS; GLIMPCE; LAKE SUPERIOR; MIGRATION; REFLECTION; SEISMIC; SEISMIC-SURVEYS;

Milkereit, B., Green, A. G., Morel-a-l'Huissier, P. A., Lee, M. W., and Agena, W. F., 1986, Great Lakes seismic reflection survey migrated data:, Geological Survey of Canada, Open File Report 1592, 33 p. CANADA; GEOPHYSICS; GREAT LAKES; REFLECTION; SEISMIC; SEISMIC- SURVEYS; UNITED-STATES;

Milkereit, B., Green, A. G., Morel-l'Hussier, P. A., Lee, M. W., and Agena, W. F., 1988, Great Lakes seismic reflection survey migrated data:, Geological Survey of Canada, Open-File Report 1592, 33 p. CANADA; GEOPHYSICS; REFLECTION; SEISMIC; SEISMIC-SURVEYS;

Milkereit, B., Lee, M. W., Agena, W. F., and Cannon, W. F., 1989, Special processing of GLIMPCE Lake Superior and Lake Huron reflection data [abs.]: Eos (American Geophysical Union Transactions), v. 70, no. 15, p. 278. CANADA; CRUST; FAULTS; GEOPHYSICS; GLIMPCE; GRENVILLE-FRONT; LAKE SUPERIOR; LAKE-HURON; MIGRATION; MOHO; PROCESSING; REFLECTION; SEISMIC; SEISMIC- SURVEYS; STRUCTURAL-GEOLOGY; UNITED-STATES;

Miller, G. H., 1988, Forest City Basin; is there oil in the Paleozoic sediments?: Oil and Gas Journal, v. 86, no. 16, p. 103-104. ECONOMIC GEOLOGY; FOREST CITY BASIN; IOWA; MISSOURI; NONESUCH SHALE; ORONTO-GROUP; PALEOZOIC; PETROLEUM; PRODUCTION; SEDIMENTARY-ROCKS; SEDIMENTS; SOURCE-ROCKS; UNITED-STATES;

Miller, J. D., Jr., 1983, Major element chemistry of anorthosites from the Duluth Complex, Snowbank Lake quadrangle, Minnesota [abs.]: 29th Annual Institute on Lake Superior Geology, Houghton, MI, v. 29, p. 28-29. ANORTHOSITE; ANORTHOSITIC SERIES; CLINOPYROXENE; CPX; DULUTH COMPLEX; GEOCHEMISTRY; LAYERED INTRUSION; MINERAL CHEMISTRY; MINNESOTA; OLIVINE; OPX; ORTHOPYROXENE; PLAGIOCLASE; SNOWBANK LAKE; SNOWBANK LAKE QUADRANGLE; UNITED-STATES;

---, 1985, Petrogenesis of anorthositic rocks of the Duluth Complex [abs.]: 31st Annual Institute on Lake Superior Geology, Kenora, ONT, v. 31, p. 57-58. ANORTHOSITE; ANORTHOSITIC SERIES; DULUTH COMPLEX; LAYERED INTRUSION; MINNESOTA; ORIGIN; PETROGENESIS; UNITED-STATES;

111 ---, 1986, The geology and petrology of anorthositic rocks in the Duluth Complex, Snowbank Lake quadrangle, northeastern Minnesota [Ph.D. Dissertation]: University of Minnesota, Minneapolis, 2 vols., 525 p. ALTERATION; ANORTHOSITE; ANORTHOSITIC SERIES; CUMULATES; DEUTERIC; DIABASE; DIKE; DULUTH COMPLEX; FAULT; GEOCHEMISTRY; GEOLOGY; GRANITE; IGNEOUS PROCESS; ILMENITE; JOINTS; LAKE COUNTY; LAKE ONE; LAKE THREE; LAKE TWO; LAYERED INTRUSION; MAP; MINERAL CHEMISTRY; MINNESOTA; ORIGIN; PETROCHEMISTRY; PETROGENESIS; PETROLOGY; SNOWBANK LAKE; SNOWBANK LAKE QUADRANGLE; SPINEL; STRUCTURAL-GEOLOGY; TITANOMAGNETITE; TROCTOLITIC SERIES; UNITED-STATES; WILDER LAKE;

---, 1987, Geology of the Keweenawan (Upper Precambrian) Beaver Bay Complex in the vicinity of Silver Bay, Minnesota, in Balaban, N. H., ed., Field trip guidebook for selected areas in Precambrian geology of northeastern Minnesota:, Minnesota Geological Survey, Guidebook Series, No. 17, p. 43-54. BEAVER BAY COMPLEX; BEAVER BAY GABBRO; BEAVER RIVER DIABASE; DIABASE; DULUTH COMPLEX; FAULTS; GEOCHEMISTRY; GEOLOGY; ILGEN CITY QUADRANGLE; LAKE COUNTY; LAX LAKE GABBRO; LAYERED INTRUSION; MAJOR ELEMENT ANALYSES; MAP; MINNESOTA; MINOR ELEMENT ANALYSES; NORTH SHORE VOLCANIC GROUP; PETROLOGY; STRUCTURAL-GEOLOGY; TRACE ELEMENT ANALYSES; UNITED-STATES; WHOLE ROCK ANALYSES;

---, 1987, Bedrock geology of Keweenawan rocks in the vicinity of Silver Bay and Beaver Bay, northeastern Minnesota [abs.]: 33rd Annual Institute on Lake Superior Geology, Wawa, ONT, v. 33, p. 43-44. BEAVER BAY; BEAVER BAY COMPLEX; BEAVER BAY GABBRO; BEAVER RIVER DIABASE; BEDROCK; DIABASE; DIKES; DULUTH COMPLEX; FAULTS; GEOLOGY; INTERFLOW SEDIMENTS; LAKE COUNTY; LAX LAKE GABBRO; MINNESOTA; NORTH SHORE VOLCANIC GROUP; SILLS; SILVER BAY; SILVER BAY QUADRANGLE; SPLIT ROCK POINT NE QUADRANGLE; STRUCTURAL-GEOLOGY; UNITED-STATES;

---, 1988, Geologic map of the Silver Bay and Split Rock Point NE quadrangles, Lake County, Minnesota: Minnesota Geological Survey, Miscellaneous Map Series, Map M-65, scale 1:24,000. ANORTHOSITE; BEAVER BAY COMPLEX; DIABASE; DULUTH COMPLEX; GEOLOGY; LAKE COUNTY; LAYERED INTRUSION; MAP; MINNESOTA; SILVER BAY; SILVER BAY QUADRANGLE; SPLIT ROCK POINT; SPLIT ROCK POINT NE QUADRANGLE; UNITED-STATES;

---, 1989, Geology of the Beaver Bay Complex, northeastern Minnesota [abs.]: 35th Annual Institute on Lake Superior Geology, Duluth, MN, v. 35, p. 56-57. ANORTHOSITE; BEAVER BAY COMPLEX; DIABASE; DULUTH COMPLEX; GEOLOGY; LAYERED INTRUSION; MINNESOTA; UNITED-STATES;

---, 1989, Middle Keweenawan igneous history, in Dickas, A. B., ed., Lake Superior basin segment of the Midcontinent Rift System:, 28th International Geological Congress, Field Trip Guidebook T344, p. 13-15. CANADA; DULUTH COMPLEX; IGNEOUS-ROCKS; MICHIGAN; MINNESOTA; ONTARIO; UNITED-STATES; UPPER-PENINSULA; WISCONSIN;

---, 1992, The need for a new paradigm regarding the petrogenesis of the Duluth Complex [abs.]: 38th Annual Institute on Lake Superior Geology, Hurley, WI, v. 38, p. 65-67. AGE DATING; DULUTH COMPLEX; DULUTH LAYERED SERIES; GEOCHRONOLOGY; LAYERED INTRUSION; LOGAN SILLS; MINNESOTA; PARTRIDGE RIVER INTRUSION; PETROGENESIS; POWERLINE GABBRO; SILLS; SONJU LAKE INTRUSION; UNITED-STATES; URANIUM-LEAD; ZIRCONS;

---, 1993, Evidence of interruptions during fractional crystallization of the Duluth Complex Layered Series at Duluth [abs.]: 39th Annual Institute on Lake Superior Geology, Eveleth, MN, v. 39, p. 58-59. CRYSTALLIZATION; CUMULATES; CYCLIC LAYERS; DULUTH; DULUTH COMPLEX; DULUTH LAYERED SERIES; FRACTIONAL CRYSTALLIZATION; IGNEOUS-PROCESSES; LAYERED INTRUSION; MINNESOTA; ST. LOUIS COUNTY; STRATIGRAPHY; UNITED-STATES;

---, 1995, Prediction and discovery of PGE occurrences in the Duluth Complex at Duluth [abs.]: 41st Annual Institute on Lake Superior Geology, Marathon, ONT, v. 41, p. 45-46. ALTERATION; ANORTHOSITIC SERIES; DULUTH; DULUTH LAYERED SERIES; HYDROTHERMAL; LAYERED INTRUSION; MINNESOTA; PGE; PLATINUM-GROUP ELEMENTS; ST. LOUIS COUNTY; UNITED-STATES;

Miller, J. D., Jr., Boerboom, T. J., Chandler, V. W., and Green, J. C., 1994, Geology of the "Greater" Beaver Bay Complex, northeastern Minnesota [abs.]: 40th Annual Institute on Lake Superior Geology, Part 1 - Program and Abstracts, Houghton, MI, v. 40, p. 42-43. ANORTHOSITE; BEAVER BAY COMPLEX; BEAVER RIVER DIABASE; BLESNER LAKE DIORITE; CABIN CREEK PORPHYRITIC DIORITE; COOK COUNTY; CUMULATES; DIABASE; DULUTH COMPLEX; FINLAND RADAR STATION GRANOPHYRE; GABBRO; GEOLOGY; HOUGHTALING CREEK TROCTOLITE; INCLUSIONS; LAKE COUNTY; LAX LAKE GABBRO; LAYERED INTRUSION; LEVEAUX PORPHYRY; MINNESOTA; NORTH SHORE VOLCANIC GROUP; SHOEPACK LAKE INCLUSION-RICH DIORITE; SILLS; SONJU LAKE INTRUSION; TROCTOLITE; UNITED-STATES; UPPER MANITOU RIVER GABBRO; VICTOR HEAD DIABASE; VOLCANIC ROCKS; WILSON LAKE FERROGABBRO;

Miller, J. D., Jr., Boerboom, T. J., and Jerde, E. A., 1994, Bedrock geologic map of the Cabin Lake and Cramer quadrangles, Lake and Cook Counties, Minnesota: Minnesota Geological Survey, Miscellaneous Map Series, Map M-82, scale 1:24,000. BEAVER BAY COMPLEX; BEDROCK; CABIN LAKE QUADRANGLE; COOK COUNTY; CRAMER QUADRANGLE; DULUTH COMPLEX; GEOLOGY; LAKE COUNTY; MAP; MINNESOTA; NORTH SHORE VOLCANIC GROUP; UNITED-STATES;

Miller, J. D., Jr., and Chandler, V. W., 1989, Syn- and post-magmatic structural elements fo the Beaver Bay Complex, northeastern Minnesota [abs.]: Eos (American Geophysical Union Transactions), v. 70, no. 15, p. 278. BEAVER BAY COMPLEX; DIABASE; DIKES; DULUTH COMPLEX; FAULTS; KEWEENAWAN-SUPERGROUP; LAKE COUNTY; LAYERED INTRUSION; MAGMATIC; MINNESOTA; SILLS; STRIKE-SLIP FAULTS; STRUCTURAL-GEOLOGY; UNITED-STATES;

---, in press, Geology, petrology and tectonic significance of the Beaver Bay Complex, northeastern Minnesota, in Ojakangas, R. W., Dickas, A. B., and Green, J. C., eds., Late Proterozoic and Cambrian rifting, Midcontinent North America:, Geological Society of America, Special Paper. BEAVER BAY COMPLEX; DULUTH COMPLEX; GEOLOGY; LAKE COUNTY; MINNESOTA; PETROLOGY; TECTONICS; UNITED-STATES;

112 Miller, J. D., Jr., Chandler, V. W., Green, J. C., and Witthuhn, K., 1995, The Finland tectono-magmatic discontinuity-A growth fault marking the western margin of the Portage Lake volcanic basin of the Midcontinent Rift System [abs.], in Ojakangas, R. W., Dickas, A. B., and Green, J. C., eds., Basement Tectonics 10: Proceedings of the Tenth International Conference on Basement Tectonics: Netherlands, Kluwer Academic Publishers, v. 4, p. 35-40. AEROMAGNETICS; AGE; ANORTHOSITE; BAYFIELD-PENINSULA; BEAVER BAY COMPLEX; BEAVER RIVER DIABASE; COOK COUNTY; DOUGLAS-FAULT; DULUTH COMPLEX; FAULTING; FAULTS; FINLAND TECTONO-MAGMATIC DISCONTINUITY; GEOPHYSICS; GLIMPCE; GRABENS; GRANT-NORPAC; GROWTH-FAULTS; ISLE ROYALE; ISLE ROYALE FAULT; KEWEENAW FAULT; KEWEENAW PENINSULA; LAKE COUNTY; LAKE SUPERIOR SYNCLINE; LUTSEN BASALTS; MICHIGAN; MINNESOTA; NORTH SHORE VOLCANIC GROUP; OJIBWA FAULT; PORTAGE LAKE VOLCANIC BASIN; PORTAGE LAKE VOLCANICS; REFLECTION; RIFT BASIN; SCHROEDER BASALTS; SEISMIC; SEISMIC LINE A; SEISMIC LINE C; SEISMIC-SURVEYS; SILVER BAY INTRUSIONS; SONJU LAKE INTRUSION; STRUCTURAL-GEOLOGY; TECTONICS; UNITED-STATES; UPPER-PENINSULA; VOLCANIC ROCKS; WISCONSIN;

Miller, J. D., Jr., Chandler, V. W., Southwick, D. L., and Cambray, F. W., 1990, Style of emplacement of the Duluth Complex [abs.]: Geological Society of America Abstracts with Programs, v. 22, p. A369. DULUTH COMPLEX; EMPLACEMENT; EVOLUTION; IGNEOUS PROCESS; LAYERED INTRUSION; MINNESOTA; ORIGIN; UNITED-STATES;

Miller, J. D., Jr., Green, J. C., and Boerboom, T. J., 1989, Geologic map of the Ilgen City quadrangle, Lake County, Minnesota: Minnesota Geological Survey, Miscellaneous Map Series, Map M-66, scale 1:24,000. ANORTHOSITE; DIABASE; DULUTH COMPLEX; GEOLOGY; ILGEN CITY; ILGEN CITY QUADRANGLE; LAKE COUNTY; LAYERED INTRUSION; MAP; MINNESOTA; UNITED-STATES;

Miller, J. D., Jr., Green, J. C., Boerboom, T. J., and Chandler, V. W., 1993, Geologic map of the Doyle Lake and Finland quadrangles, Lake County, Minnesota: Minnesota Geological Survey, Miscellaneous Map Series, Map M-72, scale 1:24,000. DOLYE LAKE QUADRANGLE; DOYLE LAKE; DULUTH COMPLEX; FINLAND; FINLAND QUADRANGLE; GEOLOGY; LAKE COUNTY; LAYERED INTRUSION; MAP; MINNESOTA; NORTH SHORE VOLCANIC GROUP; UNITED-STATES; VOLCANIC ROCKS;

Miller, J. D., Jr., Green, J. C., and Chandler, V. W., 1993, Field trip 4: The geology of the Duluth Complex at Duluth: 39th Annual Institute on Lake Superior Geology, Duluth, MN, v. 39, Part 2, p. 131-157. ANORTHOSITIC SERIES; DULUTH; DULUTH COMPLEX; DULUTH LAYERED SERIES; GEOLOGY; GUIDEBOOK; MINNESOTA; NORTH SHORE VOLCANIC GROUP; ST. LOUIS COUNTY; UNITED-STATES;

Miller, J. D., Jr., Morey, G. B., and Weiblen, P. W., 1987, Seagull Lake-Gunflint Lake area: A classical Precambrian stratigraphic sequence in northeastern Minnesota, in Biggs, D. L., ed., Centennial Field Guide: Boulder, CO, Geological Society of America, North-Central Section, v. 3, p. 47-52. ANIMIKIE GROUP; ARCHEAN; CHALCOPYRITE; CONTACT METAMORPHISM; COOK COUNTY; COPPER; DIABASE; DIKES; DULUTH COMPLEX; FAULTS; GREENSTONE BELTS; GUIDEBOOK; GUNFLINT FORMATION; GUNFLINT IRON-FORMATION; GUNFLINT LAKE; IGNEOUS-ROCKS; IRON-FORMATION; LOGAN SILLS; LOWER-PROTEROZOIC; METAMORPHIC-ROCKS; METAMORPHISM; MINNESOTA; PENTLANDITE; PYRRHOTITE; ROVE FORMATION; SAGANAGA; SAGANAGA TONALITE; SEAGULL LAKE; SEDIMENTARY-ROCKS; SILLS; STRATIGRAPHY; STRUCTURAL-GEOLOGY; SULFIDES; TUSCARORA INTRUSION; UNITED- STATES; VERMILION DISTRICT;

Miller, J. D., Jr., Paces, J. B., and Zartman, R. E., 1991, Geochronology of the Duluth Complex: A progress report [abs.]: 37th Annual Institute on Lake Superior Geology, Eau Claire, WI, v. 37, p. 72-74. AGE DATING; DULUTH COMPLEX; DULUTH LAYERED SERIES; GEOCHRONOLOGY; LAYERED INTRUSION; LOGAN SILLS; MINNESOTA; NATHAN'S LAYERED SERIES; PARTRIDGE RIVER INTRUSION; POWERLINE GABBRO; SONJU LAKE INTRUSION; UNITED-STATES; URANIUM-LEAD; ZIRCONS;

Miller, J. D., Jr., Schaap, B. D., and Chandler, V. W., 1990, The Sonju Lake Intrusion and associated Keweenawan rocks: Geochemical and geophysical evidence of petrogenetic significance [abs.]: 36th Annual Institute on Lake Superior Geology, Thunder Bay, ONT, v. 36, p. 66-68. COOK COUNTY; DULUTH COMPLEX; GEOCHEMISTRY; GEOPHYSICS; LAYERED INTRUSION; MINNESOTA; PETROGENESIS; SONJU LAKE INTRUSION; UNITED-STATES;

Miller, J. D., Jr., and Weiblen, P. W., 1982, Mineralogic and textural variations of anorthosites in the Duluth Complex, Forest Center NW quadrangle, Minnesota [abs.]: 28th Annual Institute on Lake Superior Geology, International Falls, MN, v. 28, p. 26-28. ANORTHOSITE; ANORTHOSITIC SERIES; DULUTH COMPLEX; FOREST CENTER NW QUADRANGLE; LAYERED INTRUSION; MINERALOGY; MINNESOTA; PETROGRAPHY; PETROLOGY; STRATIGRAPHY; TROCTOLITE; UNITED-STATES;

---, 1985, Comparative petrogenesis of anorthositic and troctolitic series rocks of the Duluth Complex, Minnesota [abs.]: Geological Society of America Abstracts with Programs, v. 17, p. 664. ANORTHOSITE; ANORTHOSITIC SERIES; DULUTH COMPLEX; LAYERED INTRUSION; MINNESOTA; PETROGENESIS; PETROLOGY; TROCTOLITE; TROCTOLITIC SERIES; UNITED-STATES;

---, 1986, The role of plagioclase in the crystal mush in the petrogenesis of anorthositic rocks in the Duluth Complex [abs.]: 14th International Mineralogical Association General Meeting, Stanford, CA, Unpublished Abstract ANORTHOSITE; ANORTHOSITIC SERIES; CRYSTAL MUSH; DULUTH COMPLEX; LAYERED INTRUSION; MINNESOTA; PETROGENESIS; PLAGIOCLASE; UNITED-STATES;

---, 1990, Anorthositic rocks of the Duluth Complex: Examples of rocks formed from plagioclase mush: Journal of Petrology, v. 31, p. 295-339. ANORTHOSITE; ANORTHOSITIC SERIES; AUGITE; CLINOPYROXENE; CPX; CRYSTAL MUSH; CUMULATES; DULUTH COMPLEX; FRACTIONAL CRYSTALLIZATION; GEOCHEMISTRY; IGNEOUS-PROCESSES; ILMENITE; LAKE COUNTY; LAYERED INTRUSION; MAGMA CHAMBER; MAGNETITE; MAJOR ELEMENT ANALYSES; MINERAL CHEMISTRY; MINNESOTA; MINOR ELEMENT ANALYSES; OLIVINE; ORIGIN; OXIDES; PETROGENESIS; PETROGRAPHY; PLAGIOCLASE; PYROXENE; SNOWBANK LAKE; SNOWBANK LAKE QUADRANGLE; SYMPLECTITE; TITANOMAGNETITE; TRACE ELEMENT ANALYSES; TROCTOLITE; TROCTOLITIC SERIES; UNITED-STATES; WHOLE ROCK ANALYSES;

113 Miller, J. D., Jr., Weiblen, P. W., and Green, J. C., 1987, Roadlog and stop descriptions for the Beaver Bay Complex, in Balaban, N. H., ed., Field trip guidebook for selected areas in Precambrian geology of northeastern Minnesota:, Minnesota Geological Survey, Guidebook Series No. 17, p. 55- 70. BEAVER BAY COMPLEX; BEAVER BAY GABBRO; BEAVER RIVER DIABASE; DIABASE; DULUTH COMPLEX; GUIDEBOOK; LAKE COUNTY; LAX LAKE GABBRO; LAYERED INTRUSION; MINNESOTA; UNITED-STATES;

Miller, R. G., and O'Nions, R. K., 1983, The provenance of clastic and chemical sediments [abs.]: Terra Cognita, v. 3, p. 131. CANADA; CLASTIC; ONTARIO; PROVENANCE; SEDIMENTARY-ROCKS; SEDIMENTOLOGY; SEDIMENTS;

Miller, W. R., Ficklin, W. H., and McHugh, J. B., 1992, Geochemical exploration for copper-nickel deposits in the cool-humid climate of northeastern Minnesota: Journal of Geochemical Exploration, v. 42, p. 327-344. COPPER; DULUTH COMPLEX; EXPLORATION; GEOCHEMISTRY; LAYERED INTRUSION; MINNESOTA; NICKEL; SULFIDES; UNITED-STATES;

Mills, S. J., 1983, The relationship between the basal zone and cloud zone Cu-Ni sulfides, Minnamax deposit, Duluth Complex, Minnesota [abs.]: 29th Annual Institute on Lake Superior Geology, Houghton, MI, v. 29, p. 30. BABBITT; BATHTUB; CLOUD ZONE; COPPER; DULUTH COMPLEX; LAYERED INTRUSION; MINERAL DEPOSIT; MINERALIZATION; MINNAMAX; MINNESOTA; NICKEL; ORE DEPOSIT; PARTRIDGE RIVER INTRUSION; ST. LOUIS COUNTY; SULFIDES; UNITED-STATES;

Mills-Ervin, S., 1987, The relationship between the cloud zone and the basal zone Cu-Ni sulfides, and the significance of mafic pegmatites, Minnamax property, Duluth Complex, Minnesota [M.S. Thesis]: University of Minnesota, Duluth, 137 p. DRILL HOLES; B1-363; B1-82; BABBITT; BATHTUB; BATHTUB LAYERED SERIES; COPPER; DULUTH COMPLEX; GEOLOGY; LAYERED INTRUSION; MAFIC; MINERAL DEPOSIT; MINERALIZATION; MINNAMAX; MINNESOTA; NICKEL; ORE DEPOSIT; PARTRIDGE RIVER INTRUSION; PETROGRAPHY; PETROLOGY; ST. LOUIS COUNTY; SULFIDE; SULFIDES; UNITED-STATES;

Milne, V. G., 1967, Geology of the Cirrus Lake - Bamoos Lake area:, Ontario Department of Mines, Geological Report 43, ALKALIC COMPLEX; ALKALINE; ALKALINE INTRUSION; BAMOOS LAKE; CANADA; CIRRUS LAKE; COLDWELL COMPLEX; DISTRICT OF THUNDER BAY; GEOLOGY; ONTARIO; PORT COLDWELL; PROTEROZOIC;

Miner, G. C., and Pasteris, J. D., 1994, Longnose Fe-Ti oxide ultramafic body, Duluth Complex, MN: Evidence for magmatic and metasomatic development [abs.]: Geological Society of America Abstracts with Programs, v. 26, no. 7, p. A-294. DULUTH COMPLEX; ECONOMIC GEOLOGY; FLUID; ILMENITE; IRON; LAYERED INTRUSION; LONGNOSE; MAGMATIC; MAGNETITE; METASOMATISM; MINNESOTA; OUIS; OXIDE-BEARING ULTRAMAFIC INTRUSION; OXYGEN FUGACITY; PARTRIDGE RIVER INTRUSION; PETROGRAPHY; SPINEL; ST. LOUIS COUNTY; SYMPLECTITE; TEMPERATURE; TITANIUM; UNITED-STATES;

Minnesota Environmental Quality Board, 1979, The Minnesota Regional Copper-Nickel Study, 1976-1979: Volume 1, Executive Summary. Unpublished report, 111 p COPPER; DULUTH COMPLEX; ENVIRONMENTAL; ENVIRONMENTAL IMPACT; LAKE COUNTY; LAYERED INTRUSION; METALLURGY; MINERAL DEPOSITS; MINERAL PROCESSING; MINING; MINNESOTA; NICKEL; ORE-DEPOSITS; ST. LOUIS COUNTY; UNITED-STATES;

Mishra, C. P., Sheng-Fogg, C. D., Lemons, J. F., Jr., and De Giacomo, D. L., 1985, Cobalt availability--market economy countries; a minerals availability program appraisal:, U. S. Bureau of Mines, Information Circular 9012, 33 p. CO; COBALT; DULUTH COMPLEX; LAYERED INTRUSION; MINERAL-RESOURCES; MINNESOTA; UNITED-STATES;

Mitchell, H., and Platt, R., 1977, Field guide to aspects of the geology of the Coldwell Alkaline Complex [abs.]: 23rd Annual Institute on Lake Superior Geology, Thunder Bay, ONT, p. 11-12. ALKALIC COMPLEX; ALKALINE; ALKALINE INTRUSION; CANADA; COLDWELL COMPLEX; DEAD HORSE CREEK DIATREME; DIATREME; DISTRICT OF THUNDER BAY; GEOLOGY; MCKELLAR CREEK DIATREME; ONTARIO; PORT COLDWELL; PROTEROZOIC;

Mitchell, R. H., 1972, Compositions of nepheline, pyroxene and biotite in ijolite from the Seabrook Lake complex, Ontario, Canada: Neues Jahrbuch für Mineralogie Monatshefte, v., p. 415-422. BIOTITE; CANADA; CARBONATITE; IJOLITE; MINERAL CHEMISTRY; NEPHELINE; ONTARIO; PYROXENE; SEABROOK LAKE CARBONATITE COMPLEX;

Mitchell, R. H., Laflamme, J. H. G., and Cabri, L. J., 1989, Rhenium sulphide from the Coldwell complex, northwestern Ontario, Canada: Mineralogical Magazine, v. 53, p. 635-637. ALKALIC COMPLEX; ALKALINE; ALKALINE INTRUSION; CANADA; COLDWELL COMPLEX; DISTRICT OF THUNDER BAY; ONTARIO; PGE; PLATINUM-GROUP ELEMENTS; PORT COLDWELL; RHENIUM; SULFIDE;

Mitchell, R. H., and Platt, G. R., 1994, Aspects of the geology of the Coldwell Complex:, Geological Association of Canada and the Mineralogical Association of Canada, Field Trip A2, 36 p. ALKALIC COMPLEX; ALKALINE; ALKALINE INTRUSION; CANADA; COLDWELL COMPLEX; DISTRICT OF THUNDER BAY; GUIDEBOOK; ONTARIO; PORT COLDWELL; PROTEROZOIC;

Mitchell, R. H., and Platt, R. G., 1977, Field guide to aspects to the geology of the Coldwell Alkaline Complex: 23rd Annual Institute on Lake Superior Geology, Thunder Bay, ONT, v. 23, Field Trip Guide, 34 p. ALKALIC COMPLEX; ALKALINE; ALKALINE INTRUSION; CANADA; COLDWELL COMPLEX; DISTRICT OF THUNDER BAY; GEOLOGY; ONTARIO; PORT COLDWELL; SUPERIOR PROVINCE;

---, 1977, Mafic mineralogy of ferroaugite syenite from the Coldwell alkaline complex [abs.]: 23rd Annual Institute on Lake Superior Geology, Thunder Bay, ONT, v. 23, p. 32. ALKALIC COMPLEX; ALKALINE; ALKALINE INTRUSION; AMPHIBOLE; CANADA; CENTER I; COLDWELL COMPLEX; CRYPTIC LAYERING; DISTRICT OF THUNDER BAY; IGNEOUS LAYERING; MINERAL CHEMISTRY; MINERALOGY; OLIVINE; ONTARIO; PORT COLDWELL; PYROXENE; SYENITE;

114 ---, 1978, Mafic mineralogy of ferroaugite syenite from the Coldwell alkaline complex, Ontario, Canada: Journal of Petrology, v. 19, p. 627-651. ALKALIC COMPLEX; ALKALINE; ALKALINE INTRUSION; CANADA; COLDWELL COMPLEX; DISTRICT OF THUNDER BAY; FERROAUGITE; MAFIC; MINERALOGY; ONTARIO; PORT COLDWELL; SUPERIOR PROVINCE; SYENITE;

---, 1979, Nepheline-plagioclase intergrowths of metasomatic origin from the Coldwell complex, Ontario: The Canadian Mineralogist, v. 17, p. 537- 540. ALKALIC COMPLEX; ALKALINE; ALKALINE INTRUSION; CANADA; COLDWELL COMPLEX; DISTRICT OF THUNDER BAY; METASOMATISM; MINERALOGY; NEPHELINE; ONTARIO; ORIGIN; PLAGIOCLASE; PORT COLDWELL; PROTEROZOIC;

---, 1982, Mineralogy and petrology of nepheline syenites from the Coldwell Alkaline Complex, Ontario, Canada: Journal of Petrology, v. 23, p. 627- 651. ALKALIC COMPLEX; ALKALINE; ALKALINE INTRUSION; CANADA; COLDWELL COMPLEX; DISTRICT OF THUNDER BAY; MINERALOGY; NEPHELINE SYENITE; ONTARIO; PETROLOGY; PORT COLDWELL; SUPERIOR PROVINCE; SYENITE;

---, 1982, The Coldwell alkaline complex, in Franklin, J. M., ed., Proterozoic geology of the northern Lake Superior area:, Geological Association of Canada, Field Trip Guide Book 4, p. 42-61. ALKALIC COMPLEX; ALKALINE; ALKALINE INTRUSION; CANADA; COLDWELL COMPLEX; DISTRICT OF THUNDER BAY; GEOLOGY; ONTARIO; PORT COLDWELL; PROTEROZOIC;

Mitchell, R. H., Platt, R. G., and Cheadle, S. P., 1983, A gravity study of the Coldwell Complex, northwestern Ontario and its petrological significance: Canadian Journal of Earth Sciences, v. 20, p. 1631-1638. ALKALIC COMPLEX; ALKALINE; ALKALINE INTRUSION; CANADA; COLDWELL COMPLEX; DISTRICT OF THUNDER BAY; GEOPHYSICS; GRAVITY; ONTARIO; ORIGIN; PORT COLDWELL; SUPERIOR PROVINCE;

Mitchell, R. H., Platt, R. G., Downey, M., and Laderoute, D. G., 1991, Petrology of alkaline lamprophyres from the Coldwell alkaline complex, northwestern Ontario: Canadian Journal of Earth Sciences, v. 28, p. 1653-1663. ALKALIC COMPLEX; ALKALINE; ALKALINE INTRUSION; BASE METALS; CANADA; CENTER I; CENTER II; COLDWELL COMPLEX; DISTRICT OF THUNDER BAY; GEOCHEMISTRY; LAMPROPHYRE; ONTARIO; PETROLOGY; PORT COLDWELL; RARE-EARTH ELEMENTS; REE; SUPERIOR PROVINCE; TRACE ELEMENT ANALYSES; WHOLE ROCK ANALYSES;

Mitchell, R. H., Platt, R. G., Lukosius-Sanders, J., Artist-Downey, M., and Moogk-Pickard, S., 1993, Petrology of syenites from center III of the Coldwell alkaline complex, northwestern Ontario, Canada: Canadian Journal of Earth Sciences, v. 30, p. 145-158. ALKALIC COMPLEX; ALKALINE; ALKALINE INTRUSION; ASSIMILATION; BASALTS; CANADA; CENTER III; COLDWELL COMPLEX; DISTRICT OF THUNDER BAY; GEOCHEMISTRY; MINOR ELEMENTS; ONTARIO; PETROLOGY; PORT COLDWELL; RARE-EARTH ELEMENTS; REE; SUPERIOR PROVINCE; SYENITE; TRACE ELEMENTS ANALYSES; WHOLE ROCK ANALYSES;

Moerlein, G. A., 1963, Structure and stratigraphy of the upper Keweenawan rocks in northwestern Wisconsin [abs.]: 9th Annual Institute on Lake Superior Geology, Duluth, MN, v. 9, p. 14. COPPER; EXPLORATION; GEOPHYSICAL-SURVEYS; GEOPHYSICS; NONESUCH SHALE; ORONTO-GROUP; STRATIGRAPHY; STRUCTURAL-GEOLOGY; UNITED-STATES; WISCONSIN;

Mogessie, A., 1976, Petrologic study of copper-nickel mineralization in the Tuscarora intrusion, Duluth Complex, northeastern Minnesota [M.S. Thesis]: University of Minnesota, Minneapolis, 137 p. BALD EAGLE INTRUSION; BIOTITE; CENOZOIC; CHALCOPYRITE; COOK COUNTY; COPPER; CUBANITE; DULUTH COMPLEX; FAULT; GERSDORFFITE; GREENLAND; GUNFLINT; GUNFLINT IRON- FORMATION; IRON-FORMATION; LAYERED INTRUSION; LONG ISLAND LAKE; MINERAL CHEMISTRY; MINERALIZATION; MINNESOTA; NICKEL; OLIVINE; PENTLANDITE; PETROLOGY; PHANEROZOIC; PLAGIOCLASE; PYRITE; PYROXENE; PYRRHOTITE; SKAERGAARD INTRUSION; SOUTH KAWISHIWI INTRUSION; STRUCTURAL-GEOLOGY; SULFIDE; SULFIDES; TERTIARY; TROCTOLITE; TROCTOLITIC SERIES; TUSCARORA INTRUSION; UNITED-STATES;

---, 1982, Petrology of sulfide mineralization in the Tuscarora intrusion, Duluth Complex, northeastern Minnesota, U.S.A: SINET, Ethiopian Journal of Science, v. 3, no. 2, p. 111-133. COOK COUNTY; DULUTH COMPLEX; LAYERED INTRUSION; MINERALIZATION; MINNESOTA; PETROLOGY; SULFIDE; SULFIDES; TUSCARORA INTRUSION; UNITED-STATES;

---, 1991, Occurrence of platinum group minerals in the Duluth Complex, Minnesota [abs.]: German and Austrian Mineralogical Society Meeting, Salzburg, Austria, p. 186 BABBITT; DULUTH COMPLEX; LAYERED INTRUSION; MINERAL DEPOSIT; MINNAMAX; MINNESOTA; PARTRIDGE RIVER INTRUSION; PGE; PLATINUM-GROUP MINERALS; ST. LOUIS COUNTY; UNITED-STATES;

Mogessie, A., Kucha, H., and Stumpfl, E. F., 1992, Occurrence of molybdenite in the basal zone of the Duluth Complex, Minnesota, USA: Neues Jahrbuch für Mineralogie Monatshefte, v. 10, p. 433-440. BABBITT; DULUTH COMPLEX; LAYERED INTRUSION; MINERAL CHEMISTRY; MINERAL DEPOSIT; MINNAMAX; MINNESOTA; MOLYBDENITE; MOLYBDENUM; PARTRIDGE RIVER INTRUSION; ST. LOUIS COUNTY; UNITED-STATES;

Mogessie, A., and Saini-Eidukat, B., 1992, A review of the occurrence of platinum group elements in the Duluth Complex: Trends in Mineralogy, v. 1, p. 65-85. ALTERATION; ANIMIKIE; ANIMIKIE GROUP; APATITE; BABBITT; BIRCH LAKE; BISMUTH; BISMUTHINITE; BORNITE; CARBONATE; CHLORIDES; CHLORINE; CHROMIUM SPINEL; COBALTITE; COPPER; DULUTH COMPLEX; DUNKA ROAD; FLUID; FROODITE; GERSDORFFITE; GOLD; GRAPHITE; HEAZLEWOODITE; HERCYNITE; HESSITE; HYDROTHERMAL; ILMENITE; INCO; LAKE COUNTY; LAYERED INTRUSION; LEAD; LOWER-PROTEROZOIC; MACKINAWITE; MAGNETITE; MAUCHERITE; MICHENERITE; MILLERITE; MINERAL CHEMISTRY; MINERAL DEPOSIT; MINERALIZATION; MINERALOGY; MINNAMAX; MINNESOTA; MONCHEITE; NATIVE GOLD; NICKEL; NICKELINE; ORE DEPOSIT; ORIGIN; OXYGEN ISOTOPES; PALLADIUM; PARKERITE; PARTRIDGE RIVER INTRUSION; PARTRIDGE RIVER TROCTOLITE SERIES; PENTLANDITE; PGE; PLATINUM-GROUP ELEMENTS; SAFFLORITE; SEDIMENTARY-ROCKS; SELENIUM; SERPENTINE; SERPENTINIZATION; SOUTH KAWISHIWI INTRUSION; SPERRYLITE; SPRUCE ROAD; ST. LOUIS COUNTY; STABLE-ISOTOPES; SULFIDES; SULFUR; SULFUR ISOTOPES; TAIMYRITE; TELLURIDES; TELLURIUM; TELLUROBISMUTHINITE; TROCTOLITE; UNITED-STATES; VALLERIITE; VANADIUM; VIOLARITE; VIRGINIA FORMATION; VOLATILES;

115 Mogessie, A., and Stumpfl, E. F., 1991, Platinum mineralization in the Duluth Complex, Minnesota, and the role of fluids [abs.], in Pagel, M., and Leroy, J. L., eds., Source, transport and deposition of metals: Nancy, France, Proceedings of the 25 years SGA anniversary meeting, p. 83-86. BABBITT; DULUTH COMPLEX; FLUIDS; LAYERED INTRUSION; MINERAL DEPOSIT; MINERALIZATION; MINNAMAX; MINNESOTA; ORIGIN; PARTRIDGE RIVER INTRUSION; PGE; PLATINUM; PLATINUM-GROUP ELEMENTS; ST. LOUIS COUNTY; UNITED-STATES;

---, 1992, Platinum group element geochemistry and stable isotope study of PGM-bearing troctolitic rocks of the Duluth Complex, Minnesota: Australian Journal of Earth Sciences, v. 39, p. 315-325. 34872; AMPHIBOLE; ARSENIDES; B1-144; BA-1; BA-2; BABBITT; BASE METALS; BIOTITE; CHALCOPYRITE; CHROMIUM; CLAUSTHALITE; COPPER; CUBANITE; D-5; DRILL HOLE; DU-15; DU-9; DULUTH COMPLEX; GALENA; GEOCHEMISTRY; GRAPHITE; II-1; ILMENITE; LAKE COUNTY; LAYERED INTRUSION; MINERAL CHEMISTRY; MINERAL DEPOSIT; MINNAMAX; MINNESOTA; NICKEL; NM-5; OXYGEN ISOTOPES; PARTRIDGE RIVER INTRUSION; PGE; PGM; PLATINUM- GROUP ELEMENTS; PLATINUM-GROUP MINERALS; PREHNITE; PYRRHOTITE; SELENIUM; SL-1; SOUTH KAWISHIWI INTRUSION; SPINEL; ST. LOUIS COUNTY; STABLE-ISOTOPES; SULFIDES; SULFUR; SULFUR ISOTOPES; TITANOMAGNETITE; TROCTOLITE; TROCTOLITIC SERIES; UNITED-STATES; W-9;

Mogessie, A., Stumpfl, E. F., and Weiblen, P. W., 1991, The role of fluids in the formation of platinum-group minerals, Duluth Complex, Minnesota: Mineralogic, textural, and chemical evidence: Economic Geology, v. 86, p. 1506-1518. 34872; ALTERATION; ANIMIKIE; ANIMIKIE GROUP; APATITE; B1-144; BA-1; BA-2; BABBITT; BIOTITE; BIRCH LAKE; BISMUTH; BISMUTHOTELLURIDES; BIWABIK IRON-FORMATION; CHLORIDES; CHLORINE; CLAUSTHALITE; COPPER; D-5; DRILL HOLE; DU-15; DU-9; DULUTH COMPLEX; FLUIDS; FROODITE; GEOCHEMISTRY; GRAPHITE; HEAZLEWOODITE; HERCYNITE; HESSITE; HYDROTHERMAL; II-1; IRON-FORMATION; LAKE COUNTY; LAYERED INTRUSION; LOWER-PROTEROZOIC; MAGMATIC; MAGNETITE; MICHENERITE; MINERAL DEPOSIT; MINERALIZATION; MINERALOGY; MINNAMAX; MINNESOTA; MONCHEITE; NICKEL; NM-5; ORE DEPOSIT; ORIGIN; PARKERITE; PARTRIDGE RIVER INTRUSION; PGE; PLATINUM-GROUP ELEMENTS; PLATINUM-GROUP MINERALS; SEDIMENTARY-ROCKS; SILVER; SL-1; SOUTH KAWISHIWI INTRUSION; SPINEL; ST. LOUIS COUNTY; SULFIDES; SULFUR; TAIMYRITE; TELLURIUM; TELLUROBISMUTHINITE; UNITED-STATES; VALLERIITE; VANADIUM; VIOLARITE; VIRGINIA FORMATION; W-9; WETLEGS;

Mogessie, A., Stumpfl, E. F., Weiblen, P. W., and Ripley, E. M., 1991, The Duluth Complex, Minnesota, U.S.A.: Platinum group minerals, associated hydrous phases, oxygen and sulfur isotopes [abs.], in Barnes, S. J., ed., 6th International Platinum Symposium: Perth, Western Australia, Program with Abstracts, p. 59. BABBITT; COOK COUNTY; DULUTH COMPLEX; FLUIDS; LAYERED INTRUSION; MINERAL DEPOSIT; MINERALOGY; MINNAMAX; MINNESOTA; ORE DEPOSIT; ORIGIN; OXYGEN ISOTOPES; PARTRIDGE RIVER INTRUSION; PGE; PLATINUM-GROUP ELEMENTS; ST. LOUIS COUNTY; STABLE-ISOTOPES; SULFUR ISOTOPES; UNITED-STATES;

Molling, P. A., 1979, Petrology of a drill core (DDH 295) from the Partridge River troctolite of the Duluth Complex, Minnesota [M.S. Thesis]: Miami University, Oxford, Ohio, 150 p. DRILL HOLE; B1-295; BABBITT; COPPER; DULUTH COMPLEX; LAYERED INTRUSION; MINERAL DEPOSIT; MINERALIZATION; MINNAMAX; MINNESOTA; NICKEL; ORE DEPOSIT; PARTRIDGE RIVER INTRUSION; PARTRIDGE RIVER TROCTOLITE SERIES; PETROLOGY; ST. LOUIS COUNTY; SULFIDE; SULFIDES; TROCTOLITE; UNITED-STATES;

Molling, P. A., and Grant, N. K., 1980, A strontium isotope and trace element profile through the Partridge River troctolite, Duluth Complex, Minnesota [abs.]: Eos (American Geophysical Union Transactions), v. 61, p. 409. B1-295; BABBITT; COPPER; DRILL HOLE; DULUTH COMPLEX; GEOCHEMISTRY; LAYERED INTRUSION; MINERAL DEPOSIT; MINNAMAX; MINNESOTA; NICKEL; PARTRIDGE RIVER INTRUSION; RUBIDIUM-STRONTIUM; ST. LOUIS COUNTY; STRONTIUM ISOTOPES; TRACE ELEMENTS ANALYSES; UNITED- STATES;

Molling, P. A., Grant, N. K., Tyson, R. M., and Chang, L. L. Y., 1979, A strontium isotope study of a drill core in the Partridge River troctolite, Duluth Complex, Minnesota [abs.]: Geological Society of America Abstracts with Programs, v. 11, p. 236. B1-295; BABBITT; COPPER; DRILL HOLE; DULUTH COMPLEX; LAYERED INTRUSION; MINERAL DEPOSIT; MINNAMAX; MINNESOTA; NICKEL; PARTRIDGE RIVER INTRUSION; ST. LOUIS COUNTY; STRONTIUM ISOTOPES; UNITED-STATES;

Molling, P. A., Tyson, R. M., and Chang, L. L. Y., 1978, A petrographic guide for unit identification for the Partridge River troctolite, Duluth Complex, Minnesota [abs.]: 24th Annual Institute on Lake Superior Geology, Milwaukee, WI, v. 24, p. 26. ALTERATION; DEUTERIC; DULUTH COMPLEX; MINNESOTA; PARTRIDGE RIVER INTRUSION; PARTRIDGE RIVER TROCTOLITE SERIES; PETROGRAPHY; SOUTH KAWISHIWI INTRUSION; ST. LOUIS COUNTY; STRATIGRAPHY; SYMPLECTITE; UNITED-STATES;

Monette, C. J., 1976, The history of Jacobsville and its sandstone quarries: Welden H. Curtin, Lake Linden, Michigan, 71 p. ECONOMIC GEOLOGY; HISTORY; HOUGHTON-COUNTY; INDUSTRIAL MINERALS; JACOBSVILLE-SANDSTONE; MICHIGAN; NORTHWEST; POPULAR-GEOLOGY; PRODUCTION; QUARRY; RESOURCES; SANDSTONE; SEDIMENTARY-ROCKS; SEDIMENTS; UNITED-STATES;

Montgomery, W. W., 1977, Geologic map of upper Precambrian rocks of northern Wisconsin, east-central Minnesota, and western upper Michigan: University of Wisconsin, Madison, scale 1:250,000. AREAL-GEOLOGY; BAYFIELD-GROUP; CONGLOMERATE; GABBRO; MAP; MELLEN COMPLEX; MICHIGAN; MINNESOTA; ORONTO-GROUP; SANDSTONE; SEDIMENTARY-ROCKS; SEDIMENTS; SHALE; UNITED- STATES; UPPER-PENINSULA; UPPER-WISCONSIN;

---, 1977, Deformation of the Tyler Slate (Middle Precambrian), northern Wisconsin and western Upper Michigan [M.S. Thesis]: University of Wisconsin, Madison DEFORMATION; LOWER-PROTEROZOIC; MICHIGAN; STRUCTURAL-GEOLOGY; TYLER SLATE; UNITED- STATES; UPPER-PENINSULA; WISCONSIN;

Mooney, H., Craddock, C., Farnham, P. R., Johnson, S. H., and Volz, G., 1970, Refraction seismic investigations of the northern Midcontinent gravity high: Journal of Geophysical Research, v. 75, p. 5056-5086. BARRON COUNTY; BASALT; BAYFIELD-COUNTY; BAYFIELD-GROUP; BAYFIELD-PENINSULA; BURNETT COUNTY; CAMBRIAN; CHISAGO-COUNTY; DOLOMITE; DOUGLAS-COUNTY; DOUGLAS-FAULT; FREEBORN COUNTY; GEOPHYSICS; GOODHUE COUNTY; HINCKLEY-SANDSTONE; ISANTI COUNTY; KANABEC COUNTY; LAKE OWEN FAULT; MINNESOTA; MOWER COUNTY; ORDOVICIAN; ORONTO-GROUP; PALEOZOIC; PEPIN COUNTY; PHANEROZOIC;

116 PIERCE-COUNTY; PINE-COUNTY; POLK-COUNTY; REFRACTION; RICE COUNTY; SAINT CROIX HORST; SANDSTONE; SEDIMENTARY-ROCKS; SEISMIC; SEISMIC VELOCITY; SEISMIC-SURVEYS; SHERBURNE COUNTY; UNITED-STATES; VOLCANIC ROCKS; WASECA COUNTY; WASHINGTON-COUNTY; WISCONSIN;

Mooney, H. M., Craddock, C., Farnham, P. R., Johnson, S. H., and Volz, G., 1970, Refraction seismic investigations of the northern Midcontinent Gravity High [abs.]: 16th Annual Institute on Lake Superior Geology, Thunder Bay, ONT, v. 16, p. 28-29. BASALTS; BAYFIELD-GROUP; BAYFIELD-PENINSULA; DOUGLAS-COUNTY; DOUGLAS-FAULT; GEOPHYSICS; INTRUSIVE; MINNESOTA; ORONTO-GROUP; PALEOZOIC; PHANEROZOIC; REFRACTION; RIFT BASIN; SAINT CROIX HORST; SEDIMENTARY-ROCKS; SEISMIC; SEISMIC- SURVEYS; THICKNESS; UNITED-STATES; VELOCITY; VOLCANIC ROCKS; WISCONSIN;

Mooney, H. M., Farnham, P. R., Johnson, S. H., Volz, G. A., and Craddock, C., 1970, Seismic studies over the Midcontinent gravity high in Minnesota and northwestern Wisconsin:, Minnesota Geological Survey, Report of Investigations 11, 191 p. AEROMAGNETICS; CAMBRIAN; CENOZOIC; DEVONIAN; DOLOMITE; DOUGLAS-FAULT; FELSIC; GEOPHYSICS; GLACIAL DRIFT; GRAVITY; INTRUSIONS; LIMESTONE; MAFIC; MAGNETICS; MINNESOTA; ORDOVICIAN; PALEOZOIC; PHANEROZOIC; PLEISTOCENE; RICE COUNTY; SAINT CROIX HORST; SANDSTONE; SEDIMENTARY-ROCKS; SEISMIC; SEISMIC VELOCITY; UNITED-STATES; VOLCANIC ROCKS; WISCONSIN;

Moore, E. S., 1926, Batchawana area, District of Algoma, in: Ontario Department of Mines, Annual Report, part 2, v. 35, p. 53-85. Accompanied by Map 35b, 1:125,000 BATCHAWANA BAY; CANADA; DIKES; DISTRICT OF ALGOMA; MAP; ONTARIO; PROTEROZOIC;

---, 1927, Batchawana area, District of Algoma, in 35th Annual Report:, v. 35, Part II, 1926, p. 53-85. CANADA; DISTRICT OF ALGOMA; GEOLOGY; METAVOLCANICS; ONTARIO; VOLCANIC ROCKS;

Moore, L. R., Moore, J. R., and Spinner, E., 1969, A geomicrobiological study of the Precambrian Nonesuch Shale: Proceedings of Yorkshire Geological Society, v. 37, p. 1174-1185. FOSSILS; MICHIGAN; MICROBIOLOGY; NONESUCH SHALE; ORONTO-GROUP; PALEONTOLOGY; UNITED-STATES; UPPER-PENINSULA;

Moore, L. R., Moore, J. R. M., and Spinner, E., 1969, A geomicrobiological study of the pre-Cambrian Nonesuch Shale: Yorkshire Geological Society Proceedings, v. 37, Part 3, p. 351-394. ACRITARCHS; ANALYTICAL-METHODS; BASE METAL ANALYSES; COPPER; DEPOSITIONAL ENVIRONMENT; ELECTRON-MICROSCOPY; GEOCHEMISTRY; LITHOFACIES; LITHOLOGY; MAJOR ELEMENT ANALYSES; METHODS; MICHIGAN; MICHIGAN COPPER DISTRICT; MICROBIOLOGY; NONESUCH SHALE; ONTONAGON-COUNTY; ORGANIC- MATERIALS; ORONTO-GROUP; PARTING-SHALE; SEDIMENTARY-PETROLOGY; SEDIMENTARY-ROCKS; SEDIMENTS; SPORES; SPOROMORPH; STRATIGRAPHY; UNITED-STATES; UPPER-PENINSULA; WHITE PINE MINE; WHOLE ROCK ANALYSES;

Moore, P. B., 1971, Copper-nickel arsenides of the Mohawk No. 2 mine, Mohawk, Keweenaw Co., Michigan: American Mineralogist, v. 56, p. 341- 344. ARSENIC; ARSENIDES; COPPER; KEWEENAW COUNTY; MICHIGAN; MICHIGAN COPPER DISTRICT; MINE; MINERALIZATION; MINERALOGY; MOHAWK; MOHAWK NO. 2 MINE; NICKEL; UNITED-STATES; UPPER-PENINSULA;

Moorehouse, W. W., 1957, The Proterozoic of the Port Arthur and Lake Nipigon region, Ontario, in The Proterozoic in Canada:, Royal Society of Canada, Special Publication 2, p. 67-76. CANADA; DISTRICT OF THUNDER BAY; LAKE NIPIGON; ONTARIO; PORT ARTHUR; THUNDER BAY;

Morel-à-l'Huissier, P., and Green, A. G., 1989, Modeling the GLIMPCE 1986 seismic reflection data recorded along seismic reflection line A [abs.]: Eos (American Geophysical Union Transactions), v. 70, no. 15, p. 277. GEOPHYSICS; GLIMPCE; GRABENS; LAKE SUPERIOR; REFLECTION; SEDIMENTS; SEISMIC; SEISMIC LINE A; SEISMIC-SURVEYS; STRUCTURAL-GEOLOGY; VELOCITY;

Morel-à-l'Huissier, P., Hajnal, Z., Karl, J. H., Mereu, R. F., Meyer, R. P., Sexton, J., Trehu, A., Ervin, C. P., Hutchinson, D. R., and Green, A. G., 1989, GLIMPCE 1986 seismic refraction experiment - An introduction to the data [abs.]: Eos (American Geophysical Union Transactions), v. 70, no. 15, p. 273. CANADA; GEOPHYSICS; GLIMPCE; GRENVILLE-FRONT; LAKE MICHIGAN; LAKE SUPERIOR; LAKE-HURON; LOWER- PROTEROZOIC; NIAGARA FAULT ZONE; ONTARIO; REFLECTION; REFRACTION; SEISMIC; SEISMIC-SOURCES; SEISMIC-SURVEYS; STRUCTURAL-GEOLOGY; UNITED-STATES; WISCONSIN MAGMATIC TERRANE;

Morey, G. B., 1960, Geology of the Keweenawan sediments near Duluth, Minnesota [M.S. Thesis]: University of Minnesota, Minneapolis DULUTH; MINNESOTA; SEDIMENTARY-PETROLOGY; SEDIMENTARY-ROCKS; SEDIMENTS; UNITED-STATES;

---, 1963, The stratigraphy and structure of the Rove Formation, Gunflint Lake area, Minnesota [abs]: 9th Annual Institute on Lake Superior Geology, Duluth, MN, v. 9, p. 18. ANIMIKIE; CONTACT METAMORPHISM; COOK COUNTY; DULUTH COMPLEX; GUNFLINT LAKE; LOGAN SILLS; LOWER-PROTEROZOIC; METAMORPHISM; MINNESOTA; ROVE FORMATION; SEDIMENTARY STRUCTURES; SEDIMENTARY- ROCKS; SILLS; SOUTH LAKE QUADRANGLE; STRATIGRAPHY; STRUCTURAL-GEOLOGY; UNITED-STATES;

---, 1967, Stratigraphy and petrology of the type Fond du Lac Formation, Duluth, Minnesota:, Minnesota Geological Survey, Report of Investigations 7, 35 p. CENOZOIC; CLASTICS; CONGLOMERATE; DULUTH; FOND DU LAC FORMATION; GEOLOGY; GLACIAL DRIFT; HEAVY MINERALS; MAP; MINNESOTA; NOPEMING; OUTCROP; PETROLOGY; PHANEROZOIC; PLEISTOCENE; PROVENANCE; QUATERNARY; SEDIMENTARY-PETROLOGY; SEDIMENTARY-ROCKS; SEDIMENTOLOGY; SEDIMENTS; STRATIGRAPHY; UNITED- STATES;

---, 1971, Revised Keweenawan subsurface stratigraphy of southeastern Minnesota [abs.]: 17th Annual Institute on Lake Superior Geology, Duluth, MN, v. 17, p. 50. MINNESOTA; STRATIGRAPHY; SUBSURFACE; UNITED-STATES;

---, 1972, Keweenawan redbeds and their relation to the northern part of the midcontinent gravity high [abs.]: Geological Society of America Abstracts with Programs, v. 4, p. 339. CLASTICS; FAULTS; GENESIS; GEOPHYSICS; HORSTS; MINNESOTA; PROVENANCE; RED-BEDS;

117 SEDIMENTARY-PETROLOGY; SEDIMENTARY-ROCKS; SEDIMENTS; STRUCTURAL-GEOLOGY; SYSTEMS; TERRIGENOUS; UNITED- STATES;

---, 1972, Petrology of Keweenawan sandstones in the subsurface of southeastern Minnesota, in Sims, P. K., and Morey, G. B., eds., Geology of Minnesota: A Centennial Volume: St. Paul, Minnesota Geological Survey, p. 436-449. CARBONATE-ROCKS; CLASTICS; COMPOSITION; ENVIRONMENT; FOND DU LAC FORMATION; HINCKLEY-SANDSTONE; LITHOSTRATIGRAPHY; MINERALOGY; MINNESOTA; PETROGRAPHY; SANDSTONE; SEDIMENTARY-ROCKS; SEDIMENTATION; SEDIMENTS; SELENIUM; SOLAR CHURCH FORMATION; STREAM-TRANSPORT; TERRESTRIAL; TERRIGENOUS; TRANSPORT; UNITED-STATES;

---, 1974, Cyclic sedimentation of the Solor Church Formation (Upper Precambrian, Keweenawan) southeastern Minnesota: Journal of Sedimentary Petrology, v. 44, p. 872-884. ANOKA COUNTY; CARLTON COUNTY; CHISAGO-COUNTY; DAKOTA COUNTY; GRANULOMETRY; LIMESTONE; LITHOSTRATIGRAPHY; MINNESOTA; PINE-COUNTY; RAMSEY COUNTY; SEDIMENTARY-PETROLOGY; SEDIMENTARY-ROCKS; SEDIMENTATION; SEDIMENTS; SOLOR CHURCH FORMATION; UNITED-STATES; WASHINGTON-COUNTY;

---, 1976, Geologic map of Minnesota, bedrock geology: Minnesota Geological Survey, Miscellaneous Map Series, Map M-24, scale 1:3,168,000. ANIMIKIE; ANIMIKIE BASIN; ARCHEAN; DULUTH COMPLEX; LAYERED INTRUSION; LOWER-PROTEROZOIC; MINNESOTA; NORTH SHORE VOLCANIC GROUP; PALEOZOIC; PHANEROZOIC; SIOUX-QUARTZITE; UNITED-STATES; VERMILION DISTRICT; VERMILION GRANITIC COMPLEX; VOLCANIC ROCKS;

---, 1977, Revised Keweenawan subsurface stratigraphy, southeastern Minnesota:, Minnesota Geological Survey, Report of Investigations 16, 67 p. BOREHOLE; CARBONATE-ROCKS; COLOR; DRILL HOLE; FOND DU LAC FORMATION; HINCKLEY-SANDSTONE; LITHOSTRATIGRAPHY; MINERAL-COMPOSITION; MINERALOGY; MINNESOTA; PETROGRAPHY; SEDIMENTARY-ROCKS; SEDIMENTS; SOLOR CHURCH FORMATION; STRATIGRAPHY; TEXTURES; UNITED-STATES;

---, 1978, Field trip guidebook for the Precambrian geology of east-central Minnesota:, Minnesota Geological Survey, Guidebook Series, No. 12, 38 p. ANIMIKIE; ANIMIKIE BASIN; FOND DU LAC FORMATION; GUIDEBOOK; HILLMAN-MIGMATITE; LITTLE FALLS FORMATION; LOWER-PROTEROZOIC; MINNESOTA; NOPEMING-FORMATION; RANDALL-FORMATION; SEDIMENTARY-ROCKS; SEDIMENTS; STRATIGRAPHY; THOMSON FORMATION; UNITED-STATES;

---, 1981, Lineament map, Two Harbors sheet, Minnesota: Minnesota Geological Survey, Miscellaneous Map Series, Map M-45, scale 1:250,000. ANIMIKIE; ANORTHOSITIC SERIES; ARCHEAN; BALD EAGLE INTRUSION; BEAVER BAY COMPLEX; BEAVER RIVER DIABASE; COOK COUNTY; DULUTH COMPLEX; DULUTH LAYERED SERIES; GREENSTONE BELTS; GUNFLINT IRON-FORMATION; LAKE COUNTY; LINEAMENT; MAP; MINNESOTA; NATHAN'S LAYERED SERIES; NORTH SHORE VOLCANIC GROUP; PARTRIDGE RIVER INTRUSION; ROVE FORMATION; SOUTH COMPLEX AREA; SOUTH KAWISHIWI INTRUSION; ST. LOUIS COUNTY; UNITED-STATES;

---, 1982, Geologic map of Minnesota, bedrock geology: Minnesota Geological Survey, State Map Series, Map S-10, scale 1:3,168,000. ANIMIKIE; ANIMIKIE BASIN; ARCHEAN; BEDROCK; CRETACEOUS; DULUTH COMPLEX; GEOLOGY; GREENSTONE BELTS; LAYERED INTRUSION; LOWER-PROTEROZOIC; MESOZOIC; MINNESOTA; MINNESOTA RIVER VALLEY; MINNESOTA RIVER VALLEY SUBPROVINCE; NORTH SHORE VOLCANIC GROUP; PALEOZOIC; PHANEROZOIC; SIOUX-QUARTZITE; UNITED-STATES; VERMILION DISTRICT; VERMILION GRANITIC COMPLEX; VOLCANIC ROCKS;

---, 1989, Early geologic studies in the Lake Superior region; the contributions of H. R. Schoolcraft, J. J. Bigsby, and H. W. Bayfield: Earth Sciences History, v. 8, no. 1, p. 36-42. AREAL-GEOLOGY; HISTORY; LAKE SUPERIOR REGION; POPULAR-GEOLOGY; SEDIMENTARY-ROCKS; SEDIMENTS; UNITED-STATES;

Morey, G. B., Balaban, N. H., and Swanson, L., 1981, Bibliography of Minnesota Geology, 1951-1980:, Minnesota Geological Survey, Bulletin 46, 143 p. BIBLIOGRAPHY; COOK COUNTY; DULUTH COMPLEX; GEOLOGY; LAKE COUNTY; LAYERED INTRUSION; MINNESOTA; NORTH SHORE VOLCANIC GROUP; ST. LOUIS COUNTY; UNITED-STATES;

Morey, G. B., and Cooper, R. W., 1977, Bedrock geology of the Hoyt Lakes-Kawishiwi area, St. Louis and Lake counties, northeastern Minnesota: Minnesota Geological Survey, Open-file map, scale 1:48,000. DULUTH COMPLEX; GEOLOGY; HORNFELS; HOYT LAKES; LAKE COUNTY; LAYERED INTRUSION; MAP; MINNESOTA; PARTRIDGE RIVER INTRUSION; SOUTH KAWISHIWI INTRUSION; ST. LOUIS COUNTY; UNITED-STATES;

Morey, G. B., and Green, J. C., 1982, Status of Keweenawan as a stratigraphic unit in the Lake Superior region, in Wold, R. J., and Hinze, W. J., eds., Geology and tectonics of the Lake Superior basin:, Geological Society of America, Memoir 156, p. 15-25. KEWEENAWAN-SUPERGROUP; LAKE SUPERIOR; MINNESOTA; NORTH SHORE VOLCANIC GROUP; STRATIGRAPHY; UNITED-STATES; VOLCANIC ROCKS;

Morey, G. B., and Jirsa, M. A., 1980, Keweenawan sedimentary rocks and the Midcontinent rift system in Minnesota [abs.]: Eos (American Geophysical Union Transactions), v. 61, no. 48, p. 1195. APHANITIC-TEXTURE; CLASTIC-ROCKS; IGNEOUS-ROCKS; MINNESOTA; PLATE TECTONICS; RIFTING; SANDSTONE; SEDIMENTARY-PETROLOGY; SEDIMENTARY-ROCKS; SEDIMENTS; STRUCTURAL- GEOLOGY; SYSTEMS; TECTONICS; TECTONOPHYSICS; TEXTURES; UNITED-STATES;

Morey, G. B., and Lively, R. S., 1980, Detailed geochemical survey for east-central Minnesota, geology and geochemistry of selected uranium targets: Oak Ridge, Tennessee, Union Carbide Corporation, GJBX 60-80, 177 p. U. S. Dept. Energy, Grand Junction Office, Grand Junction, CO, U. S. AITKIN COUNTY; ANIMIKIE; ANIMIKIE BASIN; CARLTON COUNTY; DENHAM-FORMATION; ECONOMIC GEOLOGY; GEOCHEMICAL SURVEY; GEOCHEMICAL-METHODS; GEOCHEMISTRY; GROUNDWATER; KANABEC COUNTY; LOWER- PROTEROZOIC; MAPS; MCGRATH GNEISS; MINERAL EXPLORATION; MINNESOTA; PINE-COUNTY; SEDIMENTARY-ROCKS; SEDIMENTS; STREAM-SEDIMENTS; THOMSON FORMATION; UNITED-STATES; URANIUM-ORES;

118 Morey, G. B., and Mudrey, M. G., Jr., 1972, Keweenawan volcanic rocks in east-central Minnesota, in Sims, P. K., and Morey, G. B., eds., Geology of Minnesota: A Centennial Volume: St. Paul, Minnesota Geological Survey, p. 425-430. CARLTON COUNTY; CHALCOCITE; CHALCOPYRITE; CHENGWATANA VOLCANIC GROUP; CHISAGO-COUNTY; COPPER; COTTAGE GROVE FAULT; DOUGLAS-FAULT; ECONOMIC GEOLOGY; GEOLOGY; HASTINGS-FAULT; LAKE OWEN FAULT; MINERALOGY; MINNESOTA; NATIVE COPPER; NATIVE-SILVER; NORTH SHORE VOLCANIC GROUP; PETROLOGY; PINE FAULT; PINE-COUNTY; SAINT CROIX HORST; STRATIGRAPHY; STRUCTURAL-GEOLOGY; UNITED-STATES; VOLCANIC; VOLCANIC ROCKS; WISCONSIN;

Morey, G. B., and Nathan, H. D., 1977, South Lake quadrangle, Cook County, Minnesota: Minnesota Geological Survey, Miscellaneous Map Series, Map M-38, scale 1:24,000. ANIMIKIE; CONTACT METAMORPHISM; COOK COUNTY; DULUTH COMPLEX; EARLY MAFIC SERIES; GEOLOGY; GUNFLINT IRON-FORMATION; LAYERED INTRUSION; LOGAN SILLS; LOWER-PROTEROZOIC; MAP; MINNESOTA; NATHAN'S LAYERED SERIES; ROVE FORMATION; SILLS; SOUTH LAKE; SOUTH LAKE QUADRANGLE; UNITED-STATES;

---, 1978, Gunflint Lake quadrangle, Cook County, Minnesota: Minnesota Geological Survey, Miscellaneous Map Series, Map M-42, scale 1:24,000. ANIMIKIE; CONTACT METAMORPHISM; COOK COUNTY; DULUTH COMPLEX; EARLY MAFIC SERIES; GEOLOGY; GUNFLINT; GUNFLINT IRON-FORMATION; GUNFLINT LAKE; GUNFLINT LAKE QUADRANGLE; LAYERED INTRUSION; LOWER-PROTEROZOIC; MAP; MINNESOTA; NATHAN'S LAYERED SERIES; ROVE FORMATION; STRATIGRAPHY; UNITED-STATES;

Morey, G. B., and Ojakangas, R. W., 1982, Keweenawan sedimentary rocks of eastern Minnesota and northwestern Wisconsin, in Wold, R. J., and Hinze, W. J., eds., Geology and tectonics of the Lake Superior basin:, Geological Society of America, Memoir 156, p. 135-146. BAYFIELD- GROUP; CLASTIC-ROCKS; CONTROLS; ENVIRONMENTAL-ANALYSIS; FOND DU LAC FORMATION; HINCKLEY-SANDSTONE; MINNESOTA; ORONTO-GROUP; SEDIMENTARY-PETROLOGY; SEDIMENTARY-ROCKS; SEDIMENTATION; SEDIMENTS; SOLOR CHURCH FORMATION; TECTONIC-CONTROLS; UNITED-STATES; WISCONSIN;

Morey, G. B., Papike, J. J., Smith, R. W., and Weiblen, P. W., 1972, Observations on the contact metamorphism of the Biwabik iron-formation, East Mesabi District, Minnesota, in: Geological Society of America, Memoir 135, p. 225-264. BIWABIK IRON-FORMATION; CONTACT METAMORPHISM; DULUTH COMPLEX; IRON-FORMATION; LAYERED INTRUSION; LOWER-PROTEROZOIC; MESABI DISTRICT; MESABI IRON RANGE; MINERALOGY; MINNESOTA; UNITED-STATES;

Morey, G. B., and Rensink, D. G., 1969, Rejuvenated Precambrian faults as a cause of Paleozoic structures in southeastern Minnesota [abs.]: 15th Annual Institute on Lake Superior Geology, Oshkosh, WI, v. 15, p. 24-25. CAMBRIAN; DAKOTA COUNTY; DEPOSITION; FAULTS; HUDSON-AFTON ANTICLINE; HUDSON-AFTON HORST; MINNESOTA; ORDOVICIAN; PALEOZOIC; PHANEROZOIC; STRUCTURAL- GEOLOGY; UNITED-STATES; VERMILLION ANTICLINE;

Morey, G. B., and Sims, P. K., 1976, Boundary between two Precambrian terranes in Minnesota and its geologic significance: Geological Society of America Bulletin, v. 87, p. 141-152. AEROMAGNETIC ANOMALY; AEROMAGNETICS; AITKIN COUNTY; ARCHEAN; CANADIAN SHIELD; CRUSTAL EVOLUTION; GEOLOGY; GEOPHYSICS; GNEISS TERRANE; GRAVITY; GRAVITY-ANOMALIES; GREENSTONE BELTS; GREENSTONE TERRANE; MCGRATH GNEISS; METAMORPHISM; MINNESOTA; MINNESOTA RIVER VALLEY; MINNESOTA RIVER VALLEY SUBPROVINCE; PINE-COUNTY; ST. LOUIS COUNTY; STEARNS COUNTY; STRUCTURAL-GEOLOGY; TODD COUNTY; UNITED-STATES; VERMILION DISTRICT;

Morey, G. B., Sims, P. K., Cannon, W. F., Mudrey, M. G., Jr., and Southwick, D. L., 1982, Geologic map of the Lake Superior region - Minnesota, Wisconsin, and northern Michigan: Minnesota Geological Survey, State Map Series, Map S-13, scale 1:1,000,000. ANIMIKIE; ARCHEAN; DULUTH COMPLEX; GEOLOGY; GREENSTONE BELTS; IRON-FORMATION; LAYERED INTRUSION; LOWER-PROTEROZOIC; MAP; MICHIGAN; MINNESOTA; PENOKEAN; REGIONAL; UNITED-STATES; UPPER-PENINSULA; WISCONSIN;

Morey, G. B., and Van Schmus, W. R., 1988, Correlation of Precambrian rocks of the Lake Superior region, United States:, U. S. Geological Survey, Professional Paper 1241-F, 31 p. ARCHEAN; BELL CREEK GNEISS; CARNEY LAKE GNEISS; COMPEAU CREEK GNEISS; DICKINSON COUNTY; DICKINSON GROUP; EAST BRANCH ARKOSE; GEOCHRONOLOGY; GEOLOGY; GREENSTONE BELTS; LAC LA CROIX GRANITE; LOWER-PROTEROZOIC; MARQUETTE COUNTY; MCGRATH GNEISS; MICHIGAN; MINNESOTA; MINNESOTA RIVER VALLEY; MINNESOTA RIVER VALLEY SUBPROVINCE; MORTON GNEISS; PENOKEAN OROGENY; QUETICO SUBPROVINCE; REGIONAL; RICHMOND GNEISS; SARTELL GNEISS; STRATIGRAPHY; UNITED-STATES; UPPER-PENINSULA; VERMILION DISTRICT; VERMILION GRANITIC COMPLEX; WISCONSIN;

Morey, G. B., Weiblen, P. W., Papike, J. J., and Anderson, D. H., 1981, Long Island Lake quadrangle, Cook County, Minnesota: Minnesota Geological Survey, Miscellaneous Map Series, Map M-46, scale 1:24,000. COOK COUNTY; DULUTH COMPLEX; LAYERED INTRUSION; LONG ISLAND LAKE; LONG ISLAND LAKE QUADRANGLE; MAP; MINNESOTA; UNITED-STATES;

Morey, G. B., compiler., 1993, Geologic map of Minnesota: Bedrock geology: Minnesota Geological Survey, State Map Series, Map S-19, scale 1:3,000,000. ANIMIKIE; ARCHEAN; BEDROCK; GEOLOGY; GREENSTONE BELTS; LOWER-PROTEROZOIC; MAP; MINNESOTA; PALEOZOIC; PHANEROZOIC; UNITED-STATES;

---, 1994, Geologic map of Minnesota: Bedrock geology: Minnesota Geological Survey, State Map Series, Map S-20, scale 1:1,000,000. ANIMIKIE; ARCHEAN; BEDROCK; GEOLOGY; LOWER-PROTEROZOIC; MAP; MINNESOTA; PALEOZOIC; PHANEROZOIC; UNITED-STATES;

Morris, W. J., Wilband, J. T., and Snider, D. W., 1977, Geochemistry of the Yellow Dog Plains peridotite, Marquette County, Michigan [abs.]: 23rd Annual Institute on Lake Superior Geology, Thunder Bay, ONT, v. 23, p. 35. BASE METAL ANALYSES; BORNITE; CHALCOPYRITE; CHAMPION QUADRANGLE; CLINOPYROXENE; CUBANITE; DIABASE; DIKES; GEOCHEMISTRY; GEOPHYSICS; LOWER- PROTEROZOIC; MAGNETITE; MAJOR ELEMENT ANALYSES; MARQUETTE COUNTY; MICHIGAMME-SLATE; MICHIGAN; MINERAL CHEMISTRY; OLIVINE; ORTHOPYROXENE; PALEOMAGNETISM; PENTLANDITE; PERIDOTITE; PYRITE; PYRRHOTITE; RARE-EARTH

119 ELEMENTS; REE; SULFIDES; ULTRAMAFIC; UNITED-STATES; UPPER-PENINSULA; WHOLE ROCK ANALYSES; YELLOW DOG PLAINS; YELLOW DOG PLAINS PERIDOTITE;

Morrison, D. A., Ashwal, L. D., Phinney, W. C., Shih, C. Y., and Wooden, J. L., 1983, Pre-Keweenawan anorthosite inclusions in the Keweenawan Beaver Bay and Duluth Complexes, northeastern Minnesota: Geological Society of America Bulletin, v. 94, p. 206-221. ANORTHOSITE; BEAVER BAY COMPLEX; DULUTH COMPLEX; LAYERED INTRUSION; MINNESOTA; PETROGENESIS; UNITED-STATES;

Morrison, D. A., Phinney, W. C., Ashwal, L. D., Wooden, J. L., and Shih, C.-Y., 1981, Petrogenesis of anorthosite inclusions in Keweenawan rocks of northern Minnesota [abs.]: Geological Society of America Abstracts with Programs, v. 13, p. 310. ANORTHOSITE; BEAVER BAY COMPLEX; DULUTH COMPLEX; LAKE COUNTY; LAYERED INTRUSION; MINNESOTA; PETROGENESIS; UNITED-STATES;

Morton, J. P., and Long, L. E., 1982, Rb-Sr ages of Precambrian sedimentary rocks in the U.S.A: Precambrian Research, v. 18, no. 1-2, p. 133-138. AGE DATING; ARIZONA; BELT-SUPERGROUP; DIAGENESIS; GEOCHRONOLOGY; IDAHO; MICHIGAN; MONTANA; SEDIMENTARY; SEDIMENTARY-ROCKS; SEDIMENTS; STRATIGRAPHY; UNITED-STATES; UTAH;

Morton, P., 1987, PGE characteristics of sulfide-bearing troctolitic rocks from the Hoyt Lakes-Kawishiwi area, northeastern Minnesota [abs.]: Geological Society of America Abstracts with Programs, v. 19, no. 4, p. 235. COPPER; DULUTH COMPLEX; HOYT LAKES; LAKE COUNTY; LAYERED INTRUSION; MINERALIZATION; MINNESOTA; NICKEL; PETROGRAPHY; PGE; PLATINUM-GROUP ELEMENTS; ST. LOUIS COUNTY; SULFIDES; TROCTOLITE; UNITED-STATES;

---, 1989, Precious metal contents of rocks associated with the Water Hen Cu-Ni-Ti intrusion, Duluth Complex, NE Minnesota [abs.]: Geological Association of Canada/Mineralogical Association of Canada Program with Abstracts, v. 14, p. A79. ANTIMONY; ARSENIC; BISMUTH; BORNITE; CHALCOPYRITE; COPPER; CUBANITE; DISSEMINATED ORE; DULUTH COMPLEX; GALENA; GEOCHEMISTRY; GOLD; ILMENITE; LAYERED INTRUSION; LEAD; MAUCHERITE; MINERAL CHEMISTRY; MINERALIZATION; MINNESOTA; NATIVE BISMUTH; NATIVE-SILVER; NET-TEXTURED; NICCOLITE; NICKEL; ORTHOPYROXENE; OUIS; OXIDE; OXIDE-BEARING ULTRAMAFIC INTRUSION; PARKERITE; PENTLANDITE; PGE; PLATINUM-GROUP ELEMENTS; PRECIOUS METALS; PYRITE; PYRRHOTITE; SELENIUM; SILVER; SPHALERITE; ST. LOUIS COUNTY; SULFIDES; TETRADYMITE; TITANIUM; UNITED-STATES; WATER HEN INTRUSION;

Morton, P., and Ameel, J., 1985, Saline waters as indicators of economic mineralization:, Minnesota Department of Natural Resources, Division of Minerals, Report 241-1, 38 p. BABBITT; BRINES; CHLORIDES; CHLORINE; COOK COUNTY; DULUTH COMPLEX; EXPLORATION; GEOCHEMISTRY; LAKE COUNTY; LAYERED INTRUSION; MINERALIZATION; MINNAMAX; MINNESOTA; NORTH SHORE VOLCANIC GROUP; PARTRIDGE RIVER INTRUSION; ST. LOUIS COUNTY; UNITED-STATES; VOLCANIC; WATER;

Morton, P., and Geerts, S. D., 1992, High temperature hydrothermal alteration associated with PGE enrichment of Cu-Ni sulfides, Dunka Road, Duluth Complex, NE Minnesota [abs.]: 38th Annual Institute on Lake Superior Geology, Hurley, WI, v. 38, p. 72-74. ALTERATION; COPPER; DULUTH COMPLEX; DUNKA ROAD; LAYERED INTRUSION; MINERAL DEPOSIT; MINERAL DEPOSITS; MINERALIZATION; MINNESOTA; NICKEL; ORE DEPOSIT; PARTRIDGE RIVER INTRUSION; PARTRIDGE RIVER TROCTOLITE SERIES; PGE; PLATINUM-GROUP ELEMENTS; ST. LOUIS COUNTY; SULFIDE; SULFIDES; UNITED-STATES;

Morton, P., and Hauck, S. A., 1987, PGE, Au and Ag contents of Cu-Ni sulfides found at the base of the Duluth Complex, northeastern Minnesota:, Natural Resources Research Institute, University of Minnesota, Duluth, Technical Report NRRI/GMIN-TR-87-04, 85 p. BABBITT; BASE METALS; BATHTUB; COPPER; DULUTH COMPLEX; DUNKA ROAD; GEOCHEMISTRY; GOLD; LAKE COUNTY; LAYERED INTRUSION; LOCAL BOY; MATURI; MINERAL DEPOSIT; MINERALIZATION; MINNAMAX; MINNESOTA; NICKEL; NRRI; ORE DEPOSIT; PARTRIDGE RIVER INTRUSION; PARTRIDGE RIVER TROCTOLITE SERIES; PGE; PLATINUM-GROUP ELEMENTS; PRECIOUS METALS; SERPENTINE; SILVER; SOUTH KAWISHIWI INTRUSION; SOUTHWEST EXTENSION; SPRUCE ROAD; ST. LOUIS COUNTY; SULFIDE; SULFIDES; TIGER BOY; UNITED-STATES; UPDIP BATHTUB; WATER HEN; WETLEGS; WYMAN CREEK;

---, 1989, Precious metals in the copper-nickel deposits of the Duluth Complex [abs.], in Morey, G. B., ed., Workshop on the applicability of gold and platinum-group-elements models in Minnesota:, Minnesota Geological Survey, Information Circular 30, p. 47-48. BABBITT; COPPER; DULUTH COMPLEX; DUNKA ROAD; GOLD; LAKE COUNTY; LAYERED INTRUSION; MATURI; MINERAL DEPOSIT; MINERALIZATION; MINNAMAX; MINNESOTA; NICKEL; ORE DEPOSIT; OUIS; OXIDE-BEARING ULTRAMAFIC INTRUSION; PARTRIDGE RIVER INTRUSION; PARTRIDGE RIVER TROCTOLITE SERIES; PGE; PLATINUM-GROUP ELEMENTS; PRECIOUS METALS; SERPENTINE; SILVER; SOUTH KAWISHIWI INTRUSION; SPRUCE ROAD; ST. LOUIS COUNTY; SULFIDE; SULFIDES; UNITED-STATES; WATER HEN; WETLEGS; WYMAN CREEK;

Morton, P., and Reichhoff, J., 1989, Analysis of opaque oxides in partial heavy mineral concentrates from glacial drift samples, Lake County, Minnesota:, Minnesota Department of Natural Resources, Division of Minerals, Open-file Report, DULUTH COMPLEX; EXPLORATION; GLACIAL DRIFT; GLACIATION; HEAVY MINERALS; ILMENITE; LAKE COUNTY; LAYERED INTRUSION; MAGNETITE; MINERAL CHEMISTRY; MINNESOTA; OXIDE; SPINEL; UNITED-STATES;

Motamedi, S., 1984, The Keweenawan lavas in the city of Duluth [M.S. Thesis]: University of Minnesota, Duluth, 140 p. DULUTH; MINNESOTA; NORTH SHORE VOLCANIC GROUP; ST. LOUIS COUNTY; UNITED-STATES; VOLCANIC ROCKS;

Mount, D. I., 1974, The toxicity of heavy metals to aquatic life: Naturalist, v. 25, no. 2/3, p. 16-20. AQUATIC; COPPER; DULUTH COMPLEX; ENVIRONMENT; ENVIRONMENTAL; GEOCHEMISTRY; HEAVY METALS; MINERALIZATION; MINNESOTA; NICKEL; REGIONAL COPPER-NICKEL STUDY; TOXICITY; UNITED-STATES;

Mudrey, M. G., Jr., 1972, Magmatic sulfides and associated fissure vein deposits at the Green prospect, Cook County, in Sims, P. K., and Morey, G. B., eds., Geology of Minnesota: A Centennial Volume: St. Paul, Minnesota Geological Survey, p. 411. ALTERATION; CHALCOPYRITE; COOK

120 COUNTY; COPPER; DIABASE; DULUTH COMPLEX; GREEN PROSPECT; HYDROTHERMAL; LAYERED INTRUSION; LOGAN SILLS; MAGMATIC SULFIDES; MINNESOTA; NICKEL; PENTLANDITE; PIGEON RIVER; PIGEON RIVER INTRUSIONS; PYRRHOTITE; SULFIDE; SULFIDES; UNITED-STATES; XONOTLITE;

---, 1973, Structure and petrology of the sill on Pigeon Point, Minnesota [Ph.D. Dissertation]: University of Minnesota, Minneapolis, 310 p. COOK COUNTY; DULUTH COMPLEX; GEOCHEMISTRY; GEOLOGY; LAYERED INTRUSION; LOGAN SILLS; MINNESOTA; OXYGEN ISOTOPES; PETROGRAPHY; PETROLOGY; PIGEON POINT; PIGEON POINT SILLS; SILLS; STABLE-ISOTOPES; STRUCTURAL- GEOLOGY; UNITED-STATES;

---, 1976, Late structural evolution of Pigeon Point, Cook County, Minnesota, and relations to the Lake Superior syncline: Canadian Journal of Earth Sciences, v. 13, p. 877-888. COOK COUNTY; DULUTH COMPLEX; EVOLUTION; LAKE SUPERIOR; LAYERED INTRUSION; MINNESOTA; ORIGIN; PIGEON POINT; STRUCTURAL-GEOLOGY; SYNCLINE; UNITED-STATES;

---, 1977, Geologic map of Pigeon Point quadrangle, Cook County, Minnesota: Minnesota Geological Survey, Miscellaneous Map Series, Map M-36, scale 1:24,000. COOK COUNTY; MINNESOTA; NORTH SHORE VOLCANIC GROUP; PIGEON POINT; PIGEON POINT QUADRANGLE; PIGEON POINT SILLS; SILLS; UNITED-STATES; VOLCANIC ROCKS;

---, 1979, Geologic summary of the Ashland 2 degree quadrangle:, Wisconsin Geological and Natural History Survey, Open-file Report 79-1, 39 p. ASHLAND 2 DEGREE QUADRANGLE; ASHLAND COUNTY; BAYFIELD-COUNTY; DOUGLAS-COUNTY; GEOLOGY; UNITED-STATES; WISCONSIN;

---, 1981, Geologic summary of the Ashland 2 degree quadrangle, in Craddock, C., Mudrey, M. G., Jr., and Ali, H. M., eds., Lake Superior Filed Trip: Madison, University of Wisconsin, Madison, Department of Geology and Geophysics, p. 33-67. ARCHEAN; ASHLAND 2 DEGREE QUADRANGLE; ASHLAND COUNTY; BAD RIVER DOLOMITE; BAYFIELD-COUNTY; BAYFIELD-GROUP; CAMBRIAN; CENOZOIC; COPPER; DIMENSION STONE; DOUGLAS-COUNTY; ECONOMIC GEOLOGY; GEOLOGY; GLACIAL GEOLOGY; INDUSTRIAL MINERALS; IRON; IRON-FORMATION; IRONWOOD IRON FORMATION; JACOBSVILLE-SANDSTONE; KYANITE; LOWER- PROTEROZOIC; MELLEN COMPLEX; MINERAL LAKE INTRUSION; ORONTO-GROUP; PALEOZOIC; PALMS FORMATION; PHANEROZOIC; PLEISTOCENE; QUATERNARY; ROUND LAKE INTRUSION; SANDSTONE; SEDIMENTARY-ROCKS; STRUCTURAL- GEOLOGY; TITANIUM; TYLER SLATE; TYLER-FORMATION; UNITED-STATES; VANADIUM; VOLCANIC ROCKS; WISCONSIN;

---, 1986, Precambrian petroleum potential along the Midcontinent trend: Field Trip Guide Book 13. 45 p. (Companion volume to Geoscience Wisconsin, v. 11). ASHLAND COUNTY; BAYFIELD-COUNTY; COPPER FALLS STATE PARK; DOUGLAS-COUNTY; ECONOMIC GEOLOGY; GOGEBIC-COUNTY; IRON-COUNTY; OIL; PARKER-CREEK; PETROLEUM; PRESQUE ISLE STATE PARK; SEDIMENTARY- ROCKS; SEDIMENTS; UNITED-STATES; WISCONSIN;

---, 1986, Overview: Geoscience Wisconsin, v. 11, p. 1-3. GAS; HYDROCARBONS; MICHIGAN; NONESUCH SHALE; OIL; ORONTO- GROUP; PETROLEUM; UNITED-STATES; WISCONSIN;

Mudrey, M. G., Jr., and Brown, B. A., 1988, Bedrock geology of the Superior map sheet, Wisconsin [abs.]: 34th Annual Institute on Lake Superior Geology, Marquette, MI, v. 34, p. 72. ARCHEAN; BAD RIVER DOLOMITE; BEDROCK; BESSEMER-QUARTZITE; CHOCOLAY-GROUP; DEFORMATION; EROSION; GEOLOGY; IRONWOOD FORMATION; LOWER-PROTEROZOIC; MAPPING; PALMS FORMATION; SEDIMENTARY-ROCKS; STRUCTURAL-GEOLOGY; TYLER-FORMATION; UNCONFORMITY; UNITED-STATES; UPLIFT; WISCONSIN;

---, 1988, Summary of field mapping, Superior sheet:, Wisconsin Geological and Natural History Survey, Open-File Reports 88-7, 39 p. MAPPING; MINERAL LAKE FAULT; UNITED-STATES; WISCONSIN;

---, 1991, Platinum group element potential of Keweenawan intrusive rock in Wisconsin [abs.]: 37th Annual Institute on Lake Superior Geology, Eau Claire, WI, v. 37, p. 78. MELLEN COMPLEX; PGE; PLATINUM-GROUP ELEMENTS; UNITED-STATES; WISCONSIN;

Mudrey, M. G., Jr., Brown, B. A., and Greenberg, J. K., 1982, Bedrock geologic map of Wisconsin: Wisconsin Geological and Natural History Survey, scale 1:1,000,000. ARCHEAN; BEDROCK; GEOLOGY; LOWER-PROTEROZOIC; MAP; MELLEN COMPLEX; PENOKEAN; UNITED- STATES; WISCONSIN; WISCONSIN MAGMATIC TERRANE; WOLF RIVER BATHOLITH;

Mudrey, M. G., Jr., and Dickas, A. B., 1988, Midcontinent rift model based upon Gregory Rift tectonic and sedimentation geometries [abs.]: 34th Annual Institute on Lake Superior Geology, Marquette, MI, v. 34, p. 73-75. AFRICA; BAYFIELD-COUNTY; CARIBOO BASIN; EAST-AFRICA; FAULTS; GEOPHYSICS; GLIMPCE; GREGORY-RIFT; HORSTS; KENYA; MANITOU BASIN; ONTONAGON BASIN; ORONTO-GROUP; RIFT BASIN; RIFTING; SEDIMENTARY-ROCKS; SEDIMENTATION; SEDIMENTS; STRUCTURAL-GEOLOGY; TECTONICS; UNITED- STATES; UPPER-WISCONSIN;

Mudrey, M. G., Jr., Dickas, A. B., McGinnis, L. D., and Cannon, W. F., 1990, Tectonic ramifications of GNI/Argonne Lake Superior seismic data [abs.]: 36th Annual Institute on Lake Superior Geology, Thunder Bay, ONT, v. 36, p. 73-74. BAYFIELD-GROUP; DOUGLAS-FAULT; GEOPHYSICAL-SURVEYS; GEOPHYSICS; ISLE ROYALE FAULT; LAKE SUPERIOR; MICHIGAN; OAK BLUFF FORMATION; ORONTO- GROUP; PORTAGE LAKE VOLCANICS; SEDIMENTARY-ROCKS; SEDIMENTS; SEISMIC; SEISMIC-SURVEYS; STRUCTURAL- GEOLOGY; TECTONICS; UNITED-STATES; UPPER-PENINSULA; WISCONSIN;

Mudrey, M. G., Jr., and Kalliokoski, J., 1984, Metallogeny of the Lake Superior Precambrian [abs.]: 30th Annual Institute on Lake Superior Geology, Wausau, WI, v. 30, p. 37-39. ANOROGENIC; ARCHEAN; BARABOO SEQUENCE; BASE METALS; CANADA; COPPER; CRYSTAL LAKE INTRUSION; DIMENSION STONE; DISTRICT OF THUNDER BAY; ECONOMIC GEOLOGY; GOGEBIC IRON RANGE; GOLD; GRAPHITE; GREENSTONE BELTS; INDUSTRIAL MINERALS; IRON; IRON ORE; IRON-FORMATION; KEWEENAW PENINSULA; LOWER- PROTEROZOIC; MELLEN COMPLEX; MESABI IRON RANGE; MESABI RANGE; METALLOGENY; MICHIGAN; MICHIGAN COPPER

121 DISTRICT; MINERALIZATION; MINNESOTA; NICKEL; ONTARIO; ORE-DEPOSITS; PARDEE TOWNSHIP; PEGMATITE; PENOKEAN OROGEN; PGE; PLATINUM-GROUP ELEMENTS; STRATABOUND; SULFIDES; UNITED-STATES; UPPER-PENINSULA; URANIUM; VEINS; VMS; VOLCANOGENIC MASSIVE SULFIDES; WISCONSIN; WISCONSIN MAGMATIC TERRANE;

Mudrey, M. G., Jr., LaBerge, G. L., Myers, P. E., and Cordua, W. S., 1982, Progress report on the bedrock geology of the northwest map sheet, Wisconsin [abs.]: 28th Annual Institute on Lake Superior Geology, International Falls, MN, v. 28, p. 29-30. AEROMAGNETICS; ARCHEAN; BARRON-QUARTZITE; BASALTS; CAMBRIAN; CHENGWATANA VOLCANIC GROUP; COPPER; COTTAGE GROVE FAULT; DEFORMATION; DIABASE; DIKES; ELECTROMAGNETICS; FAULTS; FLAMBEAU DEPOSIT; GEOPHYSICS; GREENSCHIST-FACIES; HAWKINS FAULT; JUMP RIVER FAULT; LAKE OWEN FAULT; LINEAMENT; LOWER-PROTEROZOIC; MASSIVE SULFIDE ORE; METAMORPHISM; METASEDIMENTARY-ROCKS; MINERALIZATION; MONICO FAULT; ORE-DEPOSITS; PALEOZOIC; PHANEROZOIC; PINE FAULT; PRICE COUNTY; QUARTZITE; RUSK COUNTY; SAINT CROIX HORST; SANDSTONE; STRUCTURAL- GEOLOGY; TAYLOR COUNTY; THORNAPPLE DEPOSIT; UNCONFORMITY; UNITED-STATES; URANIUM; VMS; VOLCANIC ROCKS; VOLCANOGENIC MASSIVE SULFIDES; WISCONSIN;

Mudrey, M. G., Jr., LaBerge, G. L., Myers, P. E., and Kordua, W. S., 1987, Bedrock geology of Wisconsin; northwest sheet: Wisconsin Geological and Natural History Survey, Map 87-11, scale 1:250,000. BEDROCK; BLOOMER FAULT; FAULTS; GEOLOGY; MAP; STRUCTURAL- GEOLOGY; UNITED-STATES; WISCONSIN;

Mudrey, M. G., Jr., McGinnis, L. D., Ervin, C. P., Nyquist, J., Dickas, A. B., Morey, G. B., Green, A. G., and Sexton, J. L., 1989, Structure of the Midcontinent Rift System in western Lake Superior: Results from 8-sec reflection seismic data and gravity and magnetic anomalies [abs.]: Eos (American Geophysical Union Transactions), v. 70, no. 15, p. 278. BAYFIELD-COUNTY; BAYFIELD-PENINSULA; DOUGLAS-FAULT; GEOPHYSICS; GLIMPCE; GRAVITY; GRAVITY-ANOMALIES; ISLE ROYALE FAULT; LAKE SUPERIOR; MAGNETIC-ANOMALIES; MAGNETICS; REFLECTION; SEDIMENTARY-ROCKS; SEDIMENTS; SEISMIC; SEISMIC LINE C; SEISMIC-SURVEYS; STRUCTURAL- GEOLOGY; SYNCLINE; WISCONSIN;

Mudrey, M. G., Jr., McGinnis, L. D., Ervin, C. P., Nyquist, J. E., Dickas, A. B., Morey, G. B., Green, A. G., and Sexton, J. L., 1989, Structure of the Midcontinent Rift System from 8-sec reflection seismic data in western Lake Superior [abs.]: 35th Annual Institute on lake Superior Geology, Duluth, MN, v. 35, p. 63. BAYFIELD-PENINSULA; CANADA; FAULTS; FOLDS; GEOPHYSICAL-PROFILES; GEOPHYSICAL-SURVEYS; GEOPHYSICS; GLIMPCE; GRABENS; LAKE SUPERIOR; ONTARIO; REFLECTION; SEDIMENTARY-ROCKS; SEDIMENTS; SEISMIC; SEISMIC-SURVEYS; STRUCTURAL-GEOLOGY; SYNCLINES; TECTONICS; UNITED-STATES;

Mudrey, M. G., Jr., and Meyers, P. E., 1985, Proterozoic diabase dike swarms in Wisconsin [abs.]: 31st Annual Institute on Lake Superior Geology, Kenora, ONT, Canada, v. 31, p. 66-67. DIABASE; DIKES; UNITED-STATES; WISCONSIN;

Mudrey, M. G., Jr., and Morey, G. B., 1972, Cook County fissure vein deposits, in Sims, P. K., and Morey, G. B., eds., Geology of Minnesota: A Centinnel Volume: St. Paul, Minnesota Geological Survey, p. 407-410. ANIMIKIE; ANNABERGITE; ARGENTITE; ARSENIDES; BARITE; BORNITE; CALCITE; CANADA; CERARGYRITE; CHALCOCITE; CHALCOPYRITE; COOK COUNTY; COPPER; COVELLITE; DOLOMITE; DULUTH COMPLEX; EPITHERMAL; ERYTHRITE; FISSURE VEIN; FLUORITE; GALENA; GUNFLINT IRON-FORMATION; HYDROTHERMAL; IRON-FORMATION; LAYERED INTRUSION; LOWER-PROTEROZOIC; MARCASITE; MINNESOTA; NICKEL; NICOLITE; ONTARIO; PIGEON RIVER INTRUSIONS; PYRITE; PYROLUSITE; QUARTZ; RHODOCROSITE; ROVE FORMATION; SILVER; SILVER ISLET MINE; SILVER MOUNTAIN; SPHALERITE; SULFIDE; SULFIDES; SULFOSALTS; SUSIE ISLAND; TETRAHEDRITE; UNITED-STATES;

Mudrey, M. G., Jr., and Ostrom, M. E., 1986, Upper Keeweenawan stratigraphy; Summary stratigraphy: Geoscience Wisconsin, v. 11, p. 23-25. BAYFIELD-GROUP; CHEQUAMEGON-FORMATION; COPPER HARBOR CONGLOMERATE; DEVILS ISLAND FORMATION; FREDA- SANDSTONE; JACOBSVILLE-SANDSTONE; MICHIGAN; MINNESOTA; NONESUCH SHALE; ORIENTA-FORMATION; ORONTO-GROUP; SANDSTONE; SEDIMENTARY-ROCKS; SEDIMENTS; STRATIGRAPHY; UNITED-STATES; WISCONSIN;

Mudrey, M. G., Jr., and Weiblen, P. W., 1971, Reinvestigation of "red rocks" in the Pigeon Point area, Minnesota [abs.]: 17th Annual Institute on Lake Superior Geology, Duluth, MN, v. 17, p. 53. COOK COUNTY; DULUTH COMPLEX; GRANOPHYRE; LAYERED INTRUSION; MINNESOTA; PIGEON POINT; UNITED-STATES;

---, 1972, Diabase intrusions of northeastern Minnesota: Part 1 [abs.]: Geological Society of America Abstracts with Programs, v. 4, no. 7, p. 606. COOK COUNTY; DIABASE; DULUTH COMPLEX; LAYERED INTRUSION; LOGAN SILLS; MINNESOTA; PIGEON POINT; SILLS; UNITED-STATES;

---, 1972, Petrologic and structural aspects of the gabbro sill on Pigeon Point, Minnesota [abs.]: 18th Annual Institute on Lake Superior Geology, Houghton, MI, v. 18, Paper 15, 1 p. BARITE; COOK COUNTY; DIABASE; DIKES; DULUTH COMPLEX; FAULTS; FRACTURES; LAYERED INTRUSION; LOGAN SILLS; MINNESOTA; PETROLOGY; PIGEON POINT; PIGEON RIVER INTRUSIONS; SILLS; STRUCTURAL- GEOLOGY; UNITED-STATES; VEINS;

Muhich, T. G., 1993, Movement of titanium across the Duluth Complex - Biwabik Iron Formation contact at Dunka Pit, Mesabi Iron Range, northeastern Minnesota [M.S. Thesis]: University of Minnesota, Duluth, 154 p. BIWABIK IRON-FORMATION; DULUTH COMPLEX; DUNKA PIT; GEOCHEMISTRY; GEOTHERMOMETRY; ILMENITE; IRON; IRON ORE; IRON-FORMATION; LAYERED INTRUSION; LOWER- PROTEROZOIC; MAGNETITE; MESABI RANGE; MINERAL CHEMISTRY; MINNESOTA; OXYGEN ISOTOPES; SOUTH KAWISHIWI INTRUSION; ST. LOUIS COUNTY; STABLE-ISOTOPES; TI; TITANIFEROUS MAGNETITE; TITANIUM; TRACE ELEMENTS ANALYSES; UNITED-STATES; WHOLE ROCK ANALYSES;

122 ---, 1993, Movement of Ti across the Duluth Complex-Biwabik Iron Formation contact at Dunka Pit, Mesabi Iron Range, northeastern Minnesota [abs.]: 39th Annual Institute on Lake Superior Geology, Eveleth, MN, v. 39, p. 60-61. BIWABIK IRON-FORMATION; CONTACT METAMORPHISM; DULUTH COMPLEX; DUNKA PIT; GEOCHEMISTRY; IRON-FORMATION; LAYERED INTRUSION; LOWER- PROTEROZOIC; METAMORPHISM; METASOMATISM; MINNESOTA; ST. LOUIS COUNTY; TITANIUM; UNITED-STATES;

Muir, I. D., 1954, Crystallization of pyroxenes in an iron-rich diabase from Minnesota: Mineralogical Magazine, v. 30, p. 376-388. CRYSTALLIZATION; DIABASE; DULUTH COMPLEX; LAYERED INTRUSION; MINNESOTA; PYROXENE; UNITED-STATES;

Mulja, T., 1989, Petrology, geochemistry, sulphide and platinum-group element mineralization of the Geordie Lake intrusion, Coldwell Complex, Ontario [M.S. Thesis]: Lakehead University, Thunder Bay, Ontario, Canada, 234 p. ALKALIC COMPLEX; ALKALINE; ALKALINE INTRUSION; CANADA; COLDWELL COMPLEX; DISTRICT OF THUNDER BAY; GEOCHEMISTRY; GEORDIE LAKE INTRUSION; MINERALIZATION; ONTARIO; PETROLOGY; PGE; PLATINUM-GROUP ELEMENTS; PORT COLDWELL; SULFIDES; SUPERIOR PROVINCE;

Mulja, T., and Mitchell, R. H., 1988, Precious- and base-metal mineralization in gabbroic rocks of the Geordie Lake area, Coldwell Alkaline Complex, Ontario, Canada [abs.]: Geological Society of America Abstracts with Programs, v. 20, no. 7, p. A241. AITAITE; ALKALIC COMPLEX; ALKALINE; ALKALINE INTRUSION; ARSENIDES; ATOKITE; BORNITE; BOROVSKITE; CANADA; CHALCOPYRITE; COLDWELL COMPLEX; COPPER; DISTRICT OF THUNDER BAY; ELECTRUM; EMPRESSITE; GABBRO; GEORDIE LAKE INTRUSION; GOLD; GUANGLINITE; HESSITE; KOTULSKITE; MAGNETITE; MAJAKITE; MELONITE; MERENSKYITE; MERTIEITE; MICHENERITE; MINERALIZATION; MINERALOGY; MUTHMANNITE; NATIVE PALLADIUM; NATIVE-SILVER; NAUMANNITE; NICKEL; ONTARIO; PALLADOARSENIDE; PGE; PLATINUM-GROUP ELEMENTS; PORT COLDWELL; PRECIOUS METALS; SILVER; SPERRYLITE; SULFARSENIDES; SULFIDES; SYENITE; TELLURIDES;

---, 1989, Platinum-group minerals from the Geordie Lake intrusion, Coldwell alkaline complex, Ontario [abs.]: Geological Association of Canada/Mineralogical Association of Canada Program with Abstracts, v. 14, p. A70. ALKALIC COMPLEX; ALKALINE; ALKALINE INTRUSION; ALTAITE; ANTIMONIDES; ANTIMONY; ARSENIC; ARSENIDES; BORNITE; CANADA; CHALCOPYRITE; COLDWELL COMPLEX; COPPER; CYCLIC LAYERS; DISSEMINATED ORE; DISTRICT OF THUNDER BAY; FRACTIONATION; GEORDIE LAKE INTRUSION; HESSITE; ISOMERTIERITE; KOTULSKITE; MASSIVE SULFIDE ORE; MELONITE; MERENSKYITE; MICHENERITE; MINERALIZATION; MINERALOGY; NICKEL; OLIVINE GABBRO; ONTARIO; PALLADOARSENIDE; PAOLOVITE; PARAGENESIS; PETROGRAPHY; PGM; PLATINUM-GROUP MINERALS; POLARITE; PORT COLDWELL; SILVER; SOPCHEITE; SPERRYLITE; SULFIDE SEGREGATION; SULFIDES; SULFUR; TELLURIDES; TELLURIUM; TELLURIUM POLARITE; TEMPERATURE; TROCTOLITE;

---, 1990, Platinum-group minerals and tellurides from the Geordie Lake intrusion, Coldwell Complex, northwestern Ontario: The Canadian Mineralogist, v. 28, p. 489-502. ALKALIC COMPLEX; ALKALINE; ALKALINE INTRUSION; ALTAITE; ANTIMONIDES; ANTIMONY; ARSENIC; ARSENIDES; BISMUTH; BORNITE; CANADA; CHALCOCITE; CHALCOPYRITE; COBALTITE; COLDWELL COMPLEX; COPPER; DISSEMINATED ORE; DISTRICT OF THUNDER BAY; ELECTRUM; GALENA; GEORDIE LAKE INTRUSION; GOLD; GUANGLINITE; HESSITE; KOTULSKITE; MAGNETITE; MASSIVE SULFIDE ORE; MELONITE; MERENSKYITE; MICHENERITE; MILLERITE; MINERAL CHEMISTRY; MINERALIZATION; NICKEL; ONTARIO; ORIGIN; PALLADIUM BISMUTHOTELLURIDE; PAOLOVITE; PARAGENESIS; PENTLANDITE; PGE; PGM; PLATINUM-GROUP ELEMENTS; PLATINUM-GROUP MINERALS; PORT COLDWELL; PYRITE; SILVER; SOPCHEITE; SPERRYLITE; SPHALERITE; SULFIDES; SUPERIOR PROVINCE; TELLURIDES; TELLURIUM;

---, 1991, The Geordie Lake intrusion, Coldwell Complex, Ontario: A palladium and tellurium-rich disseminated sulfide occurrence derived from an evolved tholeiitic magma: Economic Geology, v. 86, p. 1050-1069. ALKALIC COMPLEX; ALKALINE; ALKALINE INTRUSION; ALTAITE; AMPHIBOLE; ARSENIC; ARSENIDES; BORNITE; CANADA; CHALCOPYRITE; CLINOPYROXENE; COBALTITE; COLDWELL COMPLEX; CRYSTALLIZATION; DISSEMINATED ORE; DISTRICT OF THUNDER BAY; GALENA; GENESIS; GEOCHEMISTRY; GEORDIE LAKE INTRUSION; HESSITE; ILMENITE; IMMISCIBLE SULFIDE; IMMISCIBLE SULFIDE MELT; MAGMA; MAGNETITE; MELONITE; MILLERITE; MINERAL CHEMISTRY; NICCOLITE; OLIVINE; ONTARIO; ORIGIN; PALLADIUM; PGE; PLAGIOCLASE; PLATINUM- GROUP ELEMENTS; PORT COLDWELL; POTASSIUM FELDSPAR; PYRITE; RARE-EARTH ELEMENTS; REE; SIEGENITE; SPERRYLITE; SPHALERITE; SULFARSENIDES; SULFIDE; SULFIDES; SULFUR FUGACITY; SUPERIOR PROVINCE; TELLURIDES; TELLURIUM; TEMPERATURE; THOLEIITIC; THOLEIITIC MAGMA; TRACE ELEMENT ANALYSES; WHOLE ROCK ANALYSES;

Mullenmeister, E., Holst, T. B., and Green, J. C., 1985, Structural analysis of the northeastern Mesabi Range and adjacent basal Duluth Complex [abs.]: 31st Annual Institute on Lake Superior Geology, Kenora, ONT, v. 31, p. 64-65. BIWABIK IRON-FORMATION; DULUTH COMPLEX; FAULTS; IRON-FORMATION; LAKE COUNTY; LAYERED INTRUSION; LOWER-PROTEROZOIC; MESABI IRON RANGE; MESABI RANGE; MINNESOTA; ST. LOUIS COUNTY; STRUCTURAL-GEOLOGY; UNITED-STATES;

Mullenmeister, E. E., and Miller, J. D., Jr., 1982, Structural analysis of the Duluth Complex, Forest Center NW quadrangle, Minnesota [abs.]: 28th Annual Institute on Lake Superior Geology, International Falls, MN, v. 28, p. 31-32. ANORTHOSITE; ARCHEAN; DIKES; DULUTH COMPLEX; FOREST CENTER NW QUADRANGLE; FRACTURES; GREENSTONE BELTS; JOINTS; LAMINATION; LAYERED INTRUSION; LINEAMENT; METASEDIMENTARY-ROCKS; MINNESOTA; MODAL LAYERING; STRUCTURAL-GEOLOGY; TROCTOLITE; UNITED- STATES; VERMILION DISTRICT;

Musial, J., 1987, PGM deposits: A new model: The Northern Miner Magazine, v., p. 49-51. ALKALIC COMPLEX; ALKALINE; ALKALINE INTRUSION; CANADA; COLDWELL COMPLEX; DISTRICT OF THUNDER BAY; MODEL; ONTARIO; PGM; PLATINUM-GROUP METALS; PLATINUM-GROUP MINERALS; PORT COLDWELL; PROTEROZOIC;

Myers, P. E., 1980, Guidebook for Field Trip 1: 26th Annual Institute on Lake Superior Geology, Eau Claire, WI, v. 26, p. 75-80. DIKES; MAFIC; UNITED-STATES; WISCONSIN;

123 Myers, W. D., II, 1971, The sedimentology and tectonic significance of the Bayfield Group (upper Keweenawan?), Wisconsin and Minnesota [Ph.D. Dissertation]: University of Wisconsin, Madison, 314 p. BAYFIELD-GROUP; CLASTICS; ENVIRONMENTAL-ANALYSIS; INTERPRETATION; MINNESOTA; SANDSTONE; SEDIMENTARY STRUCTURES; SEDIMENTARY-PETROLOGY; SEDIMENTARY- ROCKS; SEDIMENTOLOGY; SEDIMENTS; UNITED-STATES; WISCONSIN;

---, 1971, The sedimentology and tectonic significance of the Bayfield group, Wisconsin and Minnesota [abs.]: 17th Annual Institute on Lake Superior Geology, Duluth, MN, v. 17, p. 54-55. BAYFIELD-GROUP; ENVIRONMENT; FLUVIAL; GENERAL; MINNESOTA; PETROLOGY; SANDSTONE; SEDIMENTARY STRUCTURES; SEDIMENTARY-PETROLOGY; SEDIMENTARY-ROCKS; SEDIMENTATION; SEDIMENTOLOGY; SEDIMENTS; TECTONICS; UNITED-STATES; WISCONSIN;

Nafziger, R. H., and Elger, G. W., 1987, Preparation of titanium feedstock from Minnesota ilmenite by smelting and sulfation-leaching:, U. S. Bureau of Mines, Report of Investigations 9065, 13 p. DULUTH COMPLEX; ILMENITE; LAYERED INTRUSION; MINERAL PROCESSING; MINNESOTA; SMELTING; SULFATION-LEACHING; TI; TITANIUM; UNITED-STATES;

Nakamura, Y., and Konda, T., 1974, Compositional relations of pyroxenes in a ferrogabbro from the Beaver Bay intrusion, Minnesota: Lithos, v. 7, p. 7-14. BEAVER BAY COMPLEX; DULUTH COMPLEX; LAYERED INTRUSION; MINERAL CHEMISTRY; MINNESOTA; PYROXENE; UNITED-STATES;

Naldrett, A. J., 1982, Platinum group metals in Ontario:, Ontario Geological Survey, Open File Report 5380, 7 p. ALKALIC COMPLEX; ALKALINE; ALKALINE INTRUSION; CANADA; COLDWELL COMPLEX; DISTRICT OF THUNDER BAY; ONTARIO; ORE DEPOSIT; PGE; PLATINUM-GROUP ELEMENTS; PORT COLDWELL; PROTEROZOIC;

---, 1994, The Sudbury-Noril'sk symposium, an overview, in Lightfoot, P. C., and Naldrett, A. J., eds., Proceedings of the Sudbury-Noril'sk Symposium:, Ontario Geological Survey, Special Volume 5, p. 3-8. AFRICA; ARCHEAN; ASIA; AUSTRALIA; BEARTOOTH MOUNTAINS; BUSHVELD COMPLEX; CANADA; CHINA; COPPER; DISTRICT OF SUDBURY; DULUTH COMPLEX; GREAT DYKE; KAMBALDA; LAYERED INTRUSION; MESOZOIC; MINNESOTA; MONTANA; NICKEL; NORIL'SK; ONTARIO; ORE RESERVES; PENOKEAN OROGENY; PGE; PHANEROZOIC; PLATINUM-GROUP ELEMENTS; PRODUCTION; RUSSIA; SIBERIA; SOUTH AFRICA; STILLWATER COMPLEX; SUDBURY IGNEOUS COMPLEX; SUDBURY STRUCTURE; THOMPSON MINE; TRIASSIC; UNITED-STATES; ZIMBABWE;

Naldrett, A. J., and Duke, J. M., 1980, Platinum metals in magmatic sulfide ores: Science, v. 208, p. 1417-1424. BABBITT; COPPER; DULUTH COMPLEX; LAYERED INTRUSION; MAGMATIC SULFIDES; MINERAL DEPOSIT; MINERALIZATION; MINNAMAX; MINNESOTA; NICKEL; ORE DEPOSIT; PARTRIDGE RIVER INTRUSION; PGE; PGM; PLATINUM-GROUP ELEMENTS; PLATINUM-GROUP METALS; ST. LOUIS COUNTY; SULFIDE; SULFIDES; UNITED-STATES;

Natarajan, K. A., and Iwasaki, I., 1983, Role of galvanic interactions in the bioleaching of Duluth Gabbro Complex sulfides: Separation Science Technology, v. 18, p. 1095-1111. BIOLEACHING; COPPER; DULUTH COMPLEX; LAYERED INTRUSION; MINNESOTA; NICKEL; SULFIDE; SULFIDES; UNITED-STATES;

Nathan, H. D., 1969, The geology of a portion of the Duluth Complex, Cook County [Ph.D. Dissertation]: University of Minnesota, Minneapolis, 198 p. ANIMIKIE; COOK COUNTY; CUMULATES; DULUTH COMPLEX; GEOLOGY; GUNFLINT IRON-FORMATION; GUNFLINT LAKE; GUNFLINT LAKE QUADRANGLE; HUNGARY JACK LAKE; HUNGARY JACK LAKE QUADRANGLE; ILMENITE; IRON-FORMATION; LAYERED INTRUSION; LITTLE IRON LAKE; LOWER-PROTEROZOIC; MAGNETITE; MAP; MINERAL CHEMISTRY; MINERALOGY; MINNESOTA; NATHAN'S LAYERED SERIES; PETROLOGY; ROVE FORMATION; SOUTH LAKE; SOUTH LAKE QUADRANGLE; TITANOMAGNETITE; UNITED-STATES; VOLCANIC;

Nebel, M. L., 1917, The Duluth gabbro and its contact metamorphism in the vicinity of Gabamichigami Lake, Vermilion iron-bearing district, Minnesota [Ph.D. Dissertation]: University of Illinois, Champaign-Urbana, 140 p. ARCHEAN; CONTACT METAMORPHISM; COOK COUNTY; DULUTH COMPLEX; GABAMICHIGAMI LAKE; GREENSTONE BELTS; LAYERED INTRUSION; METAMORPHISM; MINNESOTA; UNITED-STATES; VERMILION DISTRICT;

---, 1919, The basal phases of the Duluth Gabbro near Gabamichigami Lake, Minnesota, and its contact effects: Economic Geology, v. 14, p. 367-402. CONTACT METAMORPHISM; DULUTH COMPLEX; GABAMICHIGAMI LAKE; LAKE COUNTY; LAYERED INTRUSION; METAMORPHISM; MINNESOTA; UNITED-STATES;

Nebrija, E. L., Welkie, C. J., and Meyer, R. P., 1977, Exploration for copper mineralization in an extension of the Nonesuch Shale under Lake Superior: Marine Minerals, v. 1, no. 1-2, p. 149-170. ACOUSTIC-SURVEY; CANADA; COPPER; COPPER HARBOR CONGLOMERATE; ECONOMIC GEOLOGY; FREDA-SANDSTONE; GENESIS; GEOPHYSICAL-METHODS; KEWEENAW PENINSULA; LAKE SUPERIOR; METALS; METHODS; MICHIGAN; MINERAL EXPLORATION; NONESUCH SHALE; ORONTO-GROUP; SANDSTONE; SEDIMENTARY-ROCKS; SEDIMENTS; SILTSTONE; UNITED-STATES;

Need, E., Johnson, M., Schultz, M., Pulley, S., Michelson, D. M., Edil, T., DeGroot, R., and Bagchi, A., 1980, Shoreline erosion and bluff stability along Lake Michigan and Lake Superior shorelines of Wisconsin; Appendix 9, Douglas and western Bayfield counties, Wisconsin Point to Bark Bay:, Wisconsin Geological and Natural History Survey, Shore Erosion Technical Report 10, 272 p. BARK BAY; BAYFIELD-COUNTY; DESIGN; DOUGLAS-COUNTY; ENGINEERING-GEOLOGY; EROSION; LAKE MICHIGAN; LAKE SUPERIOR; MANAGEMENT; MICHIGAN; SEDIMENTARY-ROCKS; SEDIMENTS; SHORELINES; UNITED-STATES; UPPER-PENINSULA; WISCONSIN; WISCONSIN POINT;

Neilson, J. M., and Dobell, J. P., 1955, Keweenawan felsites of the Bete Grise Bay area [abs.]: 1st Annual Institute on Lake Superior Geology, Minneapolis, MN, v. 1, p. 14. BETE GRISE BAY; CONGLOMERATE; FELSIC; FELSITE; KEWEENAW PENINSULA; MICHIGAN; RHYOLITE; UNITED-STATES; UPPER-PENINSULA; VOLCANIC ROCKS;

124 Nelson, C. A., 1942, A petrographic study of the lower Keweenawan sandstones of northern Minnesota [M.S. Thesis]: University of Minnesota, Minneapolis, 46 p. CARLTON COUNTY; CLASTIC-ROCKS; COOK COUNTY; FOND DU LAC FORMATION; GRAND PORTAGE ISLAND; LOGAN SILLS; LUCILLE ISLAND; MAP; METAMORPHIC-ROCKS; METASANDSTONE; METASEDIMENTARY-ROCKS; MINNESOTA; PETROGRAPHY; PUCKWUNGE FORMATION; SANDSTONE; SEDIMENTARY-PETROLOGY; SEDIMENTARY-ROCKS; SEDIMENTS; SILLS; STRATIGRAPHY; SUSIE ISLAND; UNITED-STATES;

Nelson, J. R., 1989, The Lower Ordovician of the southern Michigan Basin; hydrocarbon potential: 194 p. 106 Refs. ECONOMIC GEOLOGY; EXPLORATION; LOWER-ORDOVICIAN; MICHIGAN; MICHIGAN-BASIN; NONESUCH SHALE; ORDOVICIAN; ORONTO-GROUP; PALEOZOIC; PETROLEUM; PHANEROZOIC; PRAIRIE DU CHIEN GROUP; SEDIMENTARY-ROCKS; SEDIMENTS; SOURCE-ROCKS; UNITED-STATES; UTICA-SHALE;

Nelson, N. S., 1990, Geochemical evidence for formation of granophyre in the roof zone of the Keweenawan Duluth Complex [abs.]: Geological Society of America Abstracts with Programs, v. 22, p. A289. COOK COUNTY; DULUTH COMPLEX; GEOCHEMISTRY; GRANITE; GRANOPHYRE; LAYERED INTRUSION; MINNESOTA; ORIGIN; PETROGENESIS; ROOF ZONE; UNITED-STATES;

---, 1991, A petrologic and geochemical study of granophyric granite in the roof of the Keweenawan Duluth Complex, Eagle Mountain, Cook County, Minnesota [M.S. Thesis]: University of Minnesota, Duluth, 151 p. BASALT; COOK COUNTY; CRYSTALLIZATION; DIABASE; DULUTH COMPLEX; EAGLE MOUNTAIN; FRACTIONAL CRYSTALLIZATION; GEOCHEMISTRY; GEOLOGY; GRANITE; GRANOPHYRE; ILMENITE; IMMISCIBILITY; LAYERED INTRUSION; LIQUID IMMISCIBILITY; MAGNETITE; MAJOR ELEMENTS; MIAROLITIC; MINERAL CHEMISTRY; MINNESOTA; MINOR ELEMENTS; NORTH SHORE VOLCANIC GROUP; OLIVINE; PETROLOGY; PLAGIOCLASE; POTASSIUM FELDSPAR; PYROXENE; RARE-EARTH ELEMENTS; REE; RHYOLITES; ROOF ZONE; SPINEL; TRACE ELEMENTS ANALYSES; UNITED-STATES; VOLCANIC ROCKS;

---, 1991, Private data acquisition:, Minnesota Department of Natural Resources, Division of Minerals, Report 288, 364 p. ARCHEAN; COPPER; DULUTH COMPLEX; EXPLORATION; LAKE COUNTY; LAYERED INTRUSION; MATURI; MINNESOTA; NICKEL; UNITED-STATES;

Nevanlinna, H., and Pesonen, L. J., 1983, Late Keweenawan asymmetric polarities as analyzed by axial offset dipole geomagnetic models: Journal of Geophysical Research, v. 88, p. 645-658. GEOPHYSICS; PALEOMAGNETISM; PROTEROZOIC;

Nicholson, S. W., 1987, Stratigraphic and geochemical characteristics of rhyolites associated with the Portage Lake Lava Series, Keweenaw Peninsula, northern Michigan [abs.]: Geological Society of America Abstracts with Programs, v. 19, no. 7, p. 236. GEOCHEMISTRY; KEWEENAW PENINSULA; MICHIGAN; PORTAGE LAKE VOLCANICS; RHYOLITES; STRATIGRAPHY; UNITED-STATES; UPPER-PENINSULA;

---, 1990, Portage Lake rhyolites of the Midcontinent Rift system, Keweenaw Peninsula, Michigan: Geology, petrogenesis and implications for rift magmatism and mineralization [Ph.D. Dissertation]: University of Minnesota, Minneapolis, 268 p. FELSIC; GEOLOGY; KEWEENAW PENINSULA; MICHIGAN; MINERALIZATION; PETROGENESIS; PORTAGE LAKE; PORTAGE LAKE VOLCANICS; RHYOLITES; RIFTING; UNITED-STATES; UPPER-PENINSULA; VOLCANIC;

---, 1992, Geochemistry, petrography, and volcanology of rhyolites of the Portage Lake Volcanics, Keweenaw Peninsula, Michigan:, U. S. Geological Survey, Bulletin 1970-A,B, 57 p. GEOCHEMISTRY; KEWEENAW PENINSULA; MICHIGAN; PETROGRAPHY; PORTAGE LAKE VOLCANICS; RHYOLITES; UNITED-STATES; UPPER-PENINSULA; VOLCANOLOGY;

Nicholson, S. W., Cannon, W. F., and Schulz, K. J., 1992, Metallogeny of the Midcontinent rift system of North America: Precambrian Research, v. 58, p. 355-386. ALKALIC COMPLEX; ALKALINE; ALKALINE INTRUSION; CANADA; COLDWELL COMPLEX; COPPER; CRYSTAL LAKE INTRUSION; DISTRICT OF ALGOMA; DISTRICT OF THUNDER BAY; MELLEN COMPLEX; METALLOGENY; MICHIGAN; MINERALIZATION; MINNESOTA; NICKEL; ONTARIO; PARDEE TOWNSHIP; PORT COLDWELL; SULFIDE; SULFIDES; SUPERIOR PROVINCE; TRIBAG MINE; UNITED-STATES; WISCONSIN;

Nicholson, S. W., Cannon, W. F., and Woodruff, L. G., 1992, Alteration in the Porcupine Mountains, N. Michigan: O- and Sr-isotopic ratios of basalts of the 1.1 Ga Midcontinent Rift [abs.]: Geological Society of America Abstracts with Programs, v. 24, no. 7, p. A60-A61. MICHIGAN; OXYGEN ISOTOPES; PORCUPINE MOUNTAINS; RADIOGENIC ISOTOPES; STABLE-ISOTOPES; STRONTIUM ISOTOPES; UNITED-STATES;

Nicholson, S. W., Paces, J. B., and Cannon, W. F., 1988, Development of the Midcontinent Rift in the Lake Superior region: Petrologic and geochemical constraints for a tectonic model [abs.]: 34th Annual Institute on Lake Superior Geology, Marquette, MI, v. 34, p. 76-78. BASALT; CRYSTAL FRACTIONATION; DOUGLAS-FAULT; FLOOD BASALTS; GEOCHEMISTRY; GEOPHYSICS; GLIMPCE; ISLE ROYALE FAULT; KEWEENAW FAULT; LAKE OWEN FAULT; MANTLE; MICHIGAN; MINNESOTA; MODEL; NEODYMIUM ISOTOPES; NORTH SHORE VOLCANIC GROUP; PETROLOGY; PORTAGE LAKE VOLCANICS; RADIOGENIC ISOTOPES; RHYOLITE; RIFT BASIN; SEISMIC; STRUCTURAL-GEOLOGY; TECTONICS; UNITED-STATES; UPPER-PENINSULA; VOLCANIC ROCKS;

Nicholson, S. W., and Schulz, K. J., 1989, Petrologic and geochemical constraints on the development of the Midcontinent Rift in western Lake Superior [abs.]: Eos (American Geophysical Union Transactions), v. 70, p. 274. BASALTS; BASIN; CANADA; CRUST; EROSION; GEOCHEMISTRY; GEOPHYSICS; GLIMPCE; LAKE SUPERIOR; MICHIGAN; MINNESOTA; NEODYMIUM ISOTOPES; NORTH SHORE VOLCANIC GROUP; ONTARIO; ORIGIN; PETROLOGY; PLATE TECTONICS; PORTAGE LAKE VOLCANICS; RADIOGENIC ISOTOPES; RIFTING; SEDIMENTS; SEISMIC; SEISMIC-SURVEYS; THICKNESS; UNITED-STATES; UPPER-PENINSULA; VOLCANIC; VOLCANIC ROCKS;

Nicholson, S. W., and Shirey, S. B., 1987, 1100-Ma Midcontinent Rift development: Evidence from Nd and Sr isotope composition of Keweenaw volcanic rocks, northern Michigan [abs.]: Geological Society of America Abstracts with Programs, v. 19, p. 788. MICHIGAN; NEODYMIUM ISOTOPES; ORIGIN; PORTAGE LAKE VOLCANICS; RADIOGENIC ISOTOPES; STRONTIUM ISOTOPES; UNITED-STATES; UPPER- PENINSULA;

125 ---, 1990, Midcontinent rift volcanism in the Lake Superior region: Sr, Nd, and Pb isotopic evidence for a mantle plume origin: Journal of Geophysical Research, v. 95, p. 10851-10868. LEAD ISOTOPES; MANTLE; MICHIGAN; NEODYMIUM ISOTOPES; ORIGIN; PLUME; RADIOGENIC ISOTOPES; STRONTIUM ISOTOPES; UNITED-STATES;

Nicholson, S. W., Shirey, S. B., and Green, J. C., 1991, Regional Nd and Pb isotopic variations among the earliest Midcontinent rift basalts in western Lake Superior [abs.]: Geological Association of Canada/Mineralogical Association of Canada Program with Abstracts, v. 16, p. A90. ARCHEAN; BASALTS; COOK COUNTY; CRUST; ELY'S PEAK; FLOOD BASALTS; GEOCHEMISTRY; GRAND PORTAGE; LAKE SUPERIOR; LITHOSPHERE; MANTLE; MICHIGAN; MINNESOTA; NEODYMIUM ISOTOPES; PLUME; POWDER MILL GROUP; RADIOGENIC ISOTOPES; SAMARIUM-NEODYMIUM; ST. LOUIS COUNTY; UNITED-STATES; UPPER-PENINSULA; VOLCANIC;

Nicol, D. W., 1990, Assimilation of basic xenoliths within Centre 3 syenites of the Coldwell alkaline complex, Ontario [M.S. Thesis]: Lakehead University, Thunder Bay, Ontario, Canada, 59 p. ALKALIC COMPLEX; ALKALINE; ALKALINE INTRUSION; ASSIMILATION; CANADA; CENTER III; COLDWELL COMPLEX; DISTRICT OF THUNDER BAY; IGNEOUS-PROCESSES; ONTARIO; PORT COLDWELL; SYENITE; XENOLITHS;

Nielsen, P. A., 1987, On the failure of the Midcontinent Rift System to proceed to sea-floor spreading [abs.]: 33rd Annual Institute on Lake Superior Geology, Wawa, ONT, v. 33, p. 45-50. CANADA; PLATE TECTONICS; SEA-FLOOR SPREADING; TECTONICS; UNITED-STATES;

---, 1988, The Keweenawan Rift: A kinematic model for its origin and evolution [abs.]: 34th Annual Institute on Lake Superior Geology, Marquette, MI, v. 34, p. 79-81. COMPRESSION; EVOLUTION; GRENVILLE OROGENY; MODEL; NORTH AMERICAN PLATE; ORIGIN; PLATE TECTONICS; RIFTING; STRESS; STRUCTURAL-GEOLOGY;

Nishio, K., 1919, Native copper and silver in the Nonesuch formation, Michigan: Economic Geology, v. 14, p. 324-334. CHALCOCITE; COPPER; ECONOMIC GEOLOGY; GEOCHEMISTRY; HYDROCARBONS; KEWEENAW POINT; MICHIGAN; MICHIGAN COPPER DISTRICT; NATIVE COPPER; NATIVE-SILVER; NONESUCH MINE; NONESUCH SHALE; OIL; ONTONAGON-COUNTY; ORE-DEPOSITS; ORGANIC GEOCHEMISTRY; ORGANIC-CARBON; ORIGIN; ORONTO-GROUP; PETROLEUM; SEDIMENTARY-ROCKS; SEDIMENTS; SILVER; UNITED-STATES; UPPER-PENINSULA; WHITE PINE MINE;

Nishioka, G. K., 1983, Origin of late veins in the White Pine copper deposit, northern Michigan [M.S. Thesis]: University of Michigan, Ann Arbor CARBON ISOTOPES; COPPER; ECONOMIC GEOLOGY; MICHIGAN; MICHIGAN COPPER DISTRICT; ONTONAGON-COUNTY; ORIGIN; ORONTO-GROUP; SEDIMENTARY-ROCKS; SEDIMENTS; STABLE-ISOTOPES; UNITED-STATES; UPPER-PENINSULA; VEINS; WHITE PINE MINE;

Nishioka, G. K., Kelly, W. C., and Elmore, R. D., 1984, Copper occurrences in stromatolites of the Copper Harbor Conglomerate, Keweenaw Peninsula, northern Michigan: Economic Geology, v. 79, no. 6, p. 1393-1399. ALGAL-FLORA; COPPER; COPPER HARBOR CONGLOMERATE; COPPER-ORES; GENESIS; GEOCHEMICAL-CONTROLS; GEOCHEMISTRY; KEWEENAW COUNTY; MICHIGAN; MICHIGAN COPPER DISTRICT; MINERAL DEPOSITS; MINERALOGY; ORONTO-GROUP; SEDIMENTARY-ROCKS; SEDIMENTS; STROMATOLITES; UNITED-STATES; UPPER-PENINSULA;

Nishioka, G. K., Kelly, W. C., Lohmann, K. C., and Rye, R. O., 1985, Stable isotope geochemistry and P-T-x conditions of late vein mineralization at White Pine, Michigan [abs.]: Geological Society of America Abstracts with Programs, v. 17, no. 7, p. 678. CARBON ISOTOPES; COPPER; COPPER-ORES; DEUTERIUM; ECONOMIC GEOLOGY; FLUID INCLUSIONS; FLUIDS; GENESIS; GEOCHEMISTRY; HYDROGEN ISOTOPES; JACOBSVILLE-SANDSTONE; MICHIGAN; MICHIGAN COPPER DISTRICT; MINERAL DEPOSITS; NONESUCH SHALE; ONTONAGON-COUNTY; ORONTO-GROUP; OXYGEN ISOTOPES; P T CONDITIONS; SANDSTONE; SEDIMENTARY-ROCKS; SEDIMENTS; STABLE-ISOTOPES; UNITED-STATES; UPPER-PENINSULA; WHITE PINE MINE;

Noble, J. H., 1966, Petrology of the conglomerate zone of the Freda Formation (Precambrian) of northern Michigan [M.S. Thesis]: Miami University, Oxford, Ohio CLASTIC-ROCKS; CONGLOMERATE; FREDA-SANDSTONE; MICHIGAN; ORONTO-GROUP; PETROLOGY; SANDSTONE; SEDIMENTARY-PETROLOGY; SEDIMENTARY-ROCKS; SEDIMENTS; UNITED-STATES; UPPER-PENINSULA;

Nordeng, S. C., 1963, Precambrian stromatolites as indicators of polar shift, in Munyan, A. C., ed., Polar wandering and continental drift:, Society of Economic Paleontologists and Mineralogists, Special Publication 10, p. 131-139. GEOPHYSICS; MICHIGAN; PALEOMAGNETISM; POLAR- WANDERING; STROMATOLITES; UNITED-STATES; UPPER-PENINSULA;

---, 1969, Statistical study of the Portage Lake Lava Series [abs.]: 15th Annual Institute on Lake Superior Geology, Oshkosh, WI, v. 15, p. 27. CONGLOMERATE; MICHIGAN; PORTAGE LAKE VOLCANICS; STATISTICS; UNITED-STATES; UPPER-PENINSULA;

Nordeng, S. C., Ensign, C. O., Jr., and Volin, M. E., 1963, The application of trend surface analysis to the White Pine Copper District [abs.]: 9th Annual Institute on Lake Superior Geology, Duluth, MN, v. 9, p. 20. COPPER; MICHIGAN; MICHIGAN COPPER DISTRICT; ONTONAGON- COUNTY; ORE RESERVES; UNITED-STATES; UPPER-PENINSULA; WHITE PINE MINE;

Norman, D. I., 1974, Fluid inclusion study of the Tribag Mine, Batchawana Bay, Ontario [abs.]: 20th Annual Institute on Lake Superior Geology, Sault Ste. Marie, ONT, v. 20, p. 23-24. BATCHAWANA BAY; BRECCIA; BRECCIA PIPE; CANADA; COPPER; DISTRICT OF ALGOMA; FLUID INCLUSIONS; FLUIDS; GALENA; GANGUE; HYDROTHERMAL; MINE; MINERALIZATION; MOLYBDENUM; ONTARIO; SALINITY; SULFIDES; TEMPERATURE; TRIBAG MINE;

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Ohnenstetter, D., and Watkinson, D. H., 1992, The significance of the atokite (Pd3Sn) zvyaginstevite (Pd3Pb) solid-solution in the PGM and Cu- sulfide-rich deposit of the Two Duck Lake intrusion, Coldwell complex, Ontario [abs.]: Geological Association of Canada/Mineralogical Association of Canada Program with Abstracts, v. 17, p. A85. ALKALIC COMPLEX; ALKALINE; ALKALINE INTRUSION; ATOKITE; CANADA; COLDWELL COMPLEX; COPPER; DISTRICT OF THUNDER BAY; MINERALIZATION; ONTARIO; PGM; PLATINUM-GROUP MINERALS; PORT COLDWELL; SOLID SOLUTION; SULFIDES; TWO DUCK LAKE INTRUSION; ZVYAGINSTEVITE;

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---, 1989, Platinum-group mineralogy in Cu-rich sulfides, Two Duck Lake intrusion, Coldwell Complex, northwestern Ontario, Canada [abs.]: 6th IAGOD International Platinum Symposium, Perth, Australia, July 8-11, Programme and Abstracts, p. 21. ALKALIC COMPLEX; ALKALINE; ALKALINE INTRUSION; CANADA; COLDWELL COMPLEX; COPPER; DISTRICT OF THUNDER BAY; MINERALOGY; ONTARIO; PGM; PLATINUM-GROUP MINERALS; PORT COLDWELL; SULFIDES; SUPERIOR PROVINCE; TWO DUCK LAKE INTRUSION;

---, 1991, Zoned hollingworthite from the Two Duck Lake intrusion, Coldwell complex, Ontario: American Mineralogist, v. 76, p. 1694-1700. ALKALIC COMPLEX; ALKALINE; ALKALINE INTRUSION; CANADA; COLDWELL COMPLEX; DISTRICT OF THUNDER BAY; HOLLINGWORTHITE; MINERALOGY; ONTARIO; PORT COLDWELL; TWO DUCK LAKE INTRUSION; ZONED; ZONING;

Ohnenstetter, D. R., Dahl, R., and Watkinson, D. H., 1989, Hollingworthite zoning from the Two Duck Lake, Coldwell complex, Ontario [abs.]: Geological Association of Canada/Mineralogical Association of Canada Program with Abstracts, v. 14, p. A70. ALKALIC COMPLEX; ALKALINE; ALKALINE INTRUSION; ARSENIC; CANADA; CHALCOPYRITE; CLINOPYROXENE; COLDWELL COMPLEX; COPPER; CUBANITE; DISTRICT OF THUNDER BAY; EASTERN GABBRO; HOLLINGWORTHITE; HYDROTHERMAL; METASOMATIC FLUIDS; METASOMATISM; MINERAL CHEMISTRY; MINERALOGY; OLIVINE; ONTARIO; ORTHOPYROXENE; PENTLANDITE; PGE; PLAGIOCLASE; PLATINUM-GROUP ELEMENTS; PORT COLDWELL; PYRRHOTITE; SULFARSENIDES; SULFIDES; TWO DUCK LAKE INTRUSION; ZONING;

Ohr, M., 1993, U-Pb, Rb-Sr, and Sm-Nd dating of diagenesis and mineralization in the Late Proterozoic Nonesuch Formation, northern Michigan [Ph.D. Dissertation]: University of Michigan, Ann Arbor AGE DATING; COPPER; DIAGENESIS; GEOCHRONOLOGY; LEAD ISOTOPES; MICHIGAN; MINERALIZATION; NEODYMIUM ISOTOPES; NONESUCH SHALE; ORONTO-GROUP; RUBIDIUM-STRONTIUM; SAMARIUM-NEODYMIUM; STRONTIUM ISOTOPES; UNITED-STATES; UPPER-PENINSULA; URANIUM-LEAD;

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Oja, R. V., 1967, Geochemical investigations of the Thunder Bay silver area, in Cameron, E. M., ed., Symposium on geochemical prospecting:, Canada Geological Survey, Paper 66-54, p. 211-221. CANADA; DISTRICT OF THUNDER BAY; FRACTURES; LOWER-PROTEROZOIC; MINERALIZATION; ONTARIO; SILVER; STRUCTURAL-GEOLOGY; VEINS;

Ojakangas, R. W., 1986, Sedimentary fill of 1,100 ma Mid-Continent rift system [abs.]: American Association of Petroleum Geologists Bulletin, v. 70, no. 5, p. 627. ALLUVIAL-FANS; BAYFIELD-GROUP; CLASTIC-ROCKS; CONTROLS; FLUVIAL-ENVIRONMENT; LACUSTRINE- ENVIRONMENTS; LITHOFACIES; ORONTO-GROUP; SANDSTONE; SEDIMENTARY-ROCKS; SEDIMENTATION; SEDIMENTS; STRATIGRAPHY; TECTONIC-CONTROLS; UNITED-STATES;

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---, 1986, Reservoir characteristics of the Keweenawan Supergroup, Lake Superior region: Geoscience Wisconsin, v. 11, p. 25-31. BAYFIELD- GROUP; CHEQUAMEGON-FORMATION; COPPER HARBOR CONGLOMERATE; CROSS-BEDDING; DEVILS ISLAND FORMATION; EXPLORATION; FOND DU LAC FORMATION; FREDA-SANDSTONE; HINCKLEY-SANDSTONE; JACOBSVILLE-SANDSTONE; KEWEENAWAN-SUPERGROUP; MICHIGAN; MINNESOTA; NONESUCH SHALE; ORIENTA-FORMATION; ORONTO-GROUP; PALEOCURRENTS; PETROGRAPHY; PETROLEUM; RED-BEDS; SANDSTONE; SEDIMENTOLOGY; SOLOR CHURCH FORMATION; STRATIGRAPHY; STRUCTURAL-GEOLOGY; UNCONFORMITY; UNITED-STATES; WISCONSIN;

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Ojakangas, R. W., and Morey, G. B., 1982, Keweenawan pre-volcanic quartz sandstones and related rocks of the Lake Superior region, in Wold, R. J., and Hinze, W. J., eds., Geology and tectonics of the Lake Superior basin:, Geological Society of America, Memoir 156, p. 85-96. BESSEMER- QUARTZITE; CANADA; CLASTIC-ROCKS; DISTRICT OF THUNDER BAY; NOPEMING-FORMATION; ONTARIO; OSLER GROUP; PALEOCURRENTS; PASS LAKE FORMATION; PROVENANCE; PUCKWUNGE FORMATION; QUARTZ-SANDSTONE; SEDIMENTARY- PETROLOGY; SEDIMENTARY-ROCKS; SEDIMENTATION; SEDIMENTS; SIBLEY GROUP; VOLCANIC ROCKS;

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---, 1982, Proterozoic sedimentary rocks, in Wold, R. J., and Hinze, W. J., eds., Geology and tectonics of the Lake Superior basin:, Geological Society of America, Memoir 156, p. 83-84. BAYFIELD-GROUP; ENVIRONMENTAL-ANALYSIS; FOND DU LAC FORMATION; HINCKLEY- SANDSTONE; NOPEMING-FORMATION; ORONTO-GROUP; PUCKWUNGE FORMATION; SEDIMENTARY-ROCKS; SEDIMENTS; SIBLEY GROUP; SOLOR CHURCH FORMATION; STRATIGRAPHY; UNITED-STATES;

Ojakangas, R. W., Morey, G. B., Daniels, P. A., and Kalliokoski, J., 1980, Upper Precambrian sedimentary rocks of the Lake Superior region [abs.]: 26th Annual Institute on Lake Superior Geology, Eau Claire, WI, v. 26, p. 37-38. AGE; ALLUVIAL-FANS; BAYFIELD-GROUP; BESSEMER- QUARTZITE; CANADA; CHEQUAMEGON-FORMATION; CLASTICS; COOK COUNTY; COPPER-HARBOR; DEVILS ISLAND FORMATION; DISTRICT OF THUNDER BAY; FAULTS; FLUVIAL; FOND DU LAC FORMATION; FREDA-SANDSTONE; GEOPHYSICS; HINCKLEY-SANDSTONE; INTERFLOW SEDIMENTS; ISLE ROYALE; JACOBSVILLE-SANDSTONE; KEWEENAW FAULT; KEWEENAW PENINSULA; LACUSTRINE; LAKE SUPERIOR REGION; MICHIGAN; MINNESOTA; NONESUCH SHALE; NOPEMING-FORMATION; ONTARIO; ORIENTA-FORMATION; ORONTO-GROUP; OSLER GROUP; PALEOMAGNETISM; PASS LAKE FORMATION; PORTAGE LAKE VOLCANICS; PUCKWUNGE FORMATION; SAINT CROIX HORST; SANDSTONE; SEDIMENTARY-ROCKS; SIBLEY GROUP; SOLOR CHURCH FORMATION; ST. LOUIS COUNTY; STRUCTURAL-GEOLOGY; UNCONFORMITY; UNITED-STATES; UPPER- PENINSULA; WISCONSIN;

Ojs, R. V., 1966, Geochemical investigation of the Thunder Bay silver area, in Proceedings of the symposium on geochemical prospecting:, Geological Survey of Canada, Paper 66-54, p. 211-221. CANADA; DISTRICT OF THUNDER BAY; EXPLORATION; GEOCHEMISTRY; MINERALIZATION; ONTARIO; SILVER;

129 Olcott, P. G., and Siegel, D. I., 1978, Physiography and surficial geology of the Copper-Nickel Study Area, northeastern Minnesota: U.S. Geological Survey, Water Resources Investigation 78-51, open-file report. ARCHEAN; CENOZOIC; DULUTH COMPLEX; GEOLOGY; GEOMORPHOLOGY; GLACIAL GEOLOGY; GREENSTONE BELTS; LAYERED INTRUSION; MINNESOTA; PHANEROZOIC; PHYSIOGRAPHY; PLEISTOCENE; REGIONAL COPPER-NICKEL STUDY; SURFICIAL GEOLOGY; UNITED-STATES;

Oliver, C. F. H., 1987, Crystallization of a gabbroic pegmatite in the Coldwell complex [B.Sc. Thesis]: University of Western Ontario, London, Ontario, Canada ALKALIC COMPLEX; ALKALINE; ALKALINE INTRUSION; CANADA; COLDWELL COMPLEX; CRYSTALLIZATION; DISTRICT OF THUNDER BAY; ONTARIO; PEGMATITE; PORT COLDWELL; PROTEROZOIC;

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---, 1967, Mineralogy and petrology of the Mineral Lake Intrusion, northwestern Wisconsin [abs.]: 13th Annual Institute on Lake Superior Geology, East Lansing, MI, v. 13, p. 29-30. CLINOPYROXENE; CPX; DIFFERENTIATION; FRACTIONATION; IGNEOUS-PROCESSES; LAYERED INTRUSION; MELLEN COMPLEX; MINERAL CHEMISTRY; MINERAL LAKE INTRUSION; MINERALOGY; OLIVINE; OPX; ORTHOPYROXENE; PETROLOGY; PLAGIOCLASE; STRATIFORM; ULTRAMAFIC; UNITED-STATES; WISCONSIN;

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---, 1969, Petrology of the Rearing Pond Intrusion, Mellen, Wisconsin [abs.]: 15th Annual Institute on Lake Superior Geology, Oshkosh, WI, v. 15, p. 29. CUMULATES; IGNEOUS-ROCKS; MELLEN COMPLEX; MINERAL LAKE INTRUSION; PETROLOGY; REARING POND INTRUSION; SOUTH RANGE; UNITED-STATES; VOLCANIC ROCKS; WISCONSIN;

---, 1979, Crystallization history and textures of the Rearing Pond gabbro, northwestern Wisconsin: American Mineralogist, v. 64, p. 844-855. CRYSTALLIZATION; GABBRO; MELLEN COMPLEX; PETROGRAPHY; PETROLOGY; REARING POND INTRUSION; UNITED-STATES; WISCONSIN;

Olsen, B. M., and Mossler, J. H., 1982, Geologic map of Minnesota, bedrock topography: Minnesota Geological Survey, State Map Series, Map S-15, scale 1:1,000,000. ANIMIKIE; ANIMIKIE BASIN; ARCHEAN; BEDROCK; CENOZOIC; CRETACEOUS; GREENSTONE BELTS; LOWER- PROTEROZOIC; MAP; MESOZOIC; MINNESOTA; PALEOZOIC; PHANEROZOIC; TOPOGRAPHY; UNITED-STATES;

Oman, S. P., and Sather, N., 1979, Mineral extraction (Mining), in Veith, D. L., Kreisman, P. J., and Poppe, R. H., eds., Regional Copper-Nickel Study:, Minnesota Environmental Quality Board, v. 2, p. 75p. COPPER; DULUTH COMPLEX; LAKE COUNTY; LAYERED INTRUSION; MINING; MINNESOTA; NICKEL; RECLAMATION; REGIONAL COPPER-NICKEL STUDY; ST. LOUIS COUNTY; UNITED-STATES;

Ontario Geological Survey, 1990, Airborne and electromagnetic survey of the Batchawana area: Ontario Geological Survey, Map 81454-81455, scale 1:20,000. AEROMAGNETIC SURVEY; AEROMAGNETICS; ARCHEAN; BATCHAWANA BAY; BATCHAWANA GREENSTONE BELT; CANADA; DISTRICT OF ALGOMA; ELECTROMAGNETIC-SURVEYS; ELECTROMAGNETICS; GEOPHYSICS; MAMAINSE LAKE FAULT; MAMAINSE POINT; MAMAINSE POINT FAULT; MAMAINSE POINT FORMATION; MAPS; ONTARIO; PROTEROZOIC;

Oray, E., 1971, Regional gravity investigation of the eastern portion of the northern peninsula of Michigan [Ph.D. Dissertation]: Michigan State University, East Lansing, 86 p. GEOPHYSICS; GRAVITY-SURVEYS; MICHIGAN; REGIONAL; UNITED-STATES; UPPER-PENINSULA;

Oray, E., Hinze, W. J., and O'Hara, N. W., 1972, The eastern terminus of the Lake Superior syncline [abs.]: 18th Annual Institute on Lake Superior Geology, Houghton, MI, v. 18, Paper 17, 1 p. BASALTS; BEAVER-ISLAND; BOUGUER-ANOMALIES; CANADA; CLASTICS; DISTRICT OF ALGOMA; FAULTS; GEOPHYSICS; GRABENS; ; GRAVITY; HORSTS; KEWEENAW PENINSULA; LAKE SUPERIOR; LAKE SUPERIOR SYNCLINE; MAMAINSE POINT; MICHIGAN; ONTARIO; SEDIMENTARY-ROCKS; STRUCTURAL- GEOLOGY; UPPER-PENINSULA; VOLCANIC ROCKS; WHITEFISH POINT;

---, 1973, Gravity and magnetic evidence for the eastern termination of the Lake Superior syncline: Geological Society of America Bulletin, v. 84, p. 2763-2780. AEROMAGNETICS; GEOPHYSICS; GRAVITY; LAKE SUPERIOR SYNCLINE; PROTEROZOIC;

Ostram, M. E., and Slaughter, A. E., 1967, Correlation problems of the Cambrian and Ordovician outcrop areas of the northern peninsular (sic) of Michigan:, Michigan Basin Geological Society, Annual Field Excursion, 15 p. CAMBRIAN; CORRELATION; GUIDEBOOK; MICHIGAN; ORDOVICIAN; OUTCROP; PALEOZOIC; PHANEROZOIC; UNITED-STATES; UPPER-PENINSULA;

Ostrom, M. E., 1967, Paleozoic stratigraphic nomenclature for Wisconsin:, Wisconsin Geological and Natural History Survey, 1 p. JACOBSVILLE- SANDSTONE; NOMENCLATURE; PALEOZOIC; PHANEROZOIC; STRATIGRAPHY; UNITED-STATES; WISCONSIN;

---, 1974, First supplement to bibliography of current research of the geology of the Lake Superior region: May 1973/May 1974: Sault Ste. Marie, Ontario, Canada, 20th Institute on Lake Superior Geology, 16 p. ARCHEAN; BIBLIOGRAPHY; CANADA; CENOZOIC; DULUTH COMPLEX; ECONOMIC GEOLOGY; GEOLOGY; GEOPHYSICS; GLACIAL GEOLOGY; GREENSTONE BELTS; IRON ORE; IRON-FORMATION; LAKE SUPERIOR; LOWER-PROTEROZOIC; MICHIGAN; MINNESOTA; ONTARIO; PALEOZOIC; PENOKEAN; PENOKEAN OROGEN; PENOKEAN OROGENY; PHANEROZOIC; PLEISTOCENE; QUATERNARY; STRUCTURAL-GEOLOGY; UNITED-STATES; UPPER- PENINSULA; WISCONSIN;

130 Osweiler, D. J., 1982, A geological interpretation of the Stratford Geophysical Anomaly on the Midcontinent Paleorift Zone, Central Iowa [M.S. Thesis]: University of Iowa, Iowa City, 166 p. CENTRAL IOWA; GEOLOGY; GEOPHYSICS; IOWA; STRATFORD GEOPHYSICAL ANOMALY; UNITED-STATES;

Owen, L. B., and Faure, G., 1977, Rb/Sr dating of the Lackner Lake complex, northern Ontario, Canada: Precambrian Research, v. 5, p. 299-303. AGE DATING; ALKALIC COMPLEX; ALKALINE; BIOTITE; CANADA; GEOCHRONOLOGY; LACKNER LAKE ALKALIC COMPLEX; MINERAL AGES; ONTARIO; RUBIDIUM-STRONTIUM;

Owens, E. O., 1986, Precambrian geology and precious metal mineralization of the Fire Center area, Marquette County, Michigan [M.S. Thesis]: Michigan Technological University, Houghton, 152 p. ALTERATION; DIABASE; DIKE; MARQUETTE COUNTY; MICHIGAN; MINERALIZATION; PRECIOUS METALS; UNITED-STATES; UPPER-PENINSULA;

Paces, J. B., 1985, Temporal geochemical variations within a middle Proterozoic flood basalt sequence, Keweenaw Peninsula, Michigan [abs.]: Eos (American Geophysical Union Transactions), v. 66, p. 1136. FLOOD BASALTS; GEOCHEMISTRY; KEWEENAW PENINSULA; MICHIGAN; PORTAGE LAKE VOLCANICS; UNITED-STATES; UPPER-PENINSULA;

---, 1988, Magmatic processes, evolution and mantle source characteristics contributing to the petrogenesis of Midcontinent Rift basalts: Portage Lake Volcanics, Keweenaw Peninsula, Michigan [Ph.D. Dissertation]: Michigan Technological University, Houghton, 413 p. BASALTS; EVOLUTION; FLOOD BASALTS; KEWEENAW PENINSULA; MAGMATIC; MANTLE; MICHIGAN; PORTAGE LAKE; PORTAGE LAKE LAVAS; PORTAGE LAKE VOLCANICS; RADIOGENIC ISOTOPES; UNITED-STATES; UPPER-PENINSULA;

Paces, J. B., and Bell, K., 1989, Non-depleted sub-continental mantle beneath the Superior Province of the Canadian Shield: Nd-Sr isotopic and trace element evidence from Midcontinent Rift basalts: Geochimica et Cosmochimica Acta, v. 53, p. 2023-2035. BASE METALS; CANADIAN SHIELD; CONTINENTAL; CRUST; FLOOD BASALTS; GEOCHEMISTRY; MANTLE; MICHIGAN; MINOR ELEMENTS; NEODYMIUM ISOTOPES; NON-DEPLETED; PORTAGE LAKE; RADIOGENIC ISOTOPES; RARE-EARTH ELEMENTS; REE; SAMARIUM-NEODYMIUM; STRONTIUM ISOTOPES; SUBCONTINENTAL; SUPERIOR PROVINCE; TRACE ELEMENTS ANALYSES; UNITED-STATES; WHOLE ROCK ANALYSES;

Paces, J. B., and Bornhorst, T. J., 1984, Alteration, paragenesis and age associated with native copper mineralization of the Kearsarge Flow, Keweenaw Peninsula, Michigan [abs.]: 30th Annual Institute on Lake Superior Geology, Wausau, WI, v. 30, p. 45. AGE DATING; ALTERATION; AMYGDALOIDAL; COPPER; FLOOD BASALTS; FLUIDS; GEOCHEMISTRY; GEOCHRONOLOGY; KEARSARGE FLOW; KEWEENAW PENINSULA; MICHIGAN; MICHIGAN COPPER DISTRICT; MINERAL AGES; MINERALIZATION; NATIVE COPPER; PARAGENESIS; PORTAGE LAKE VOLCANICS; PRODUCTION; RUBIDIUM-STRONTIUM; UNITED-STATES; UPPER-PENINSULA; WOLVERINE MINE;

---, 1985, Geology and geochemistry of lava flows within the Copper Harbor Conglomerate, Keweenaw Peninsula, Michigan [abs.]: 31st Annual Institute on Lake Superior Geology, Kenora, ONT, v. 31, p. 71-72. CALUMET; COPPER HARBOR CONGLOMERATE; GEOCHEMISTRY; GEOLOGY; KEWEENAW PENINSULA; LAKE SHORE TRAPS; LAVA; LAVA-FLOWS; MAJOR ELEMENTS; MICHIGAN; MINERAL- COMPOSITION; ORONTO-GROUP; PETROLOGY; SEDIMENTARY-ROCKS; SEDIMENTS; TRACE ELEMENTS ANALYSES; UNITED- STATES; UPPER-PENINSULA;

---, 1986, Geochemical cyclicity and magma evolution within the Portage Lake Volcanics flood basalt sequences, upper Michigan [abs.]: 32nd Annual Institute on Lake Superior Geology, Wisconsin Rapids, WI, v. 32, p. 66-67. EVOLUTION; FLOOD BASALTS; GEOCHEMISTRY; MAGMA; MICHIGAN; PORTAGE LAKE VOLCANICS; UNITED-STATES; UPPER-PENINSULA;

Paces, J. B., and Davis, D. W., 1985, Implications of high precision U-Pb age dates on zircons from Portage Lake volcanic basalts on Midcontinent Rift subsidence rates, lava flow repose periods, and magma production rates [abs.]: 31st Annual Institute on Lake Superior Geology, Kenora, ONT, v. 31, p. 85-86. AGE DATING; GEOCHRONOLOGY; MAGMA; MICHIGAN; PORTAGE LAKE; PORTAGE LAKE VOLCANICS; SUBSIDENCE; UNITED-STATES; UPPER-PENINSULA; URANIUM-LEAD; VOLCANIC; ZIRCONS;

---, 1988, Implications of high precision U-Pb age dates on zircons from Portage Lake Volcanic basalts on Midcontinent rift subsidence rates, lava flow repose periods and magma production rates [abs.]: 34th Annual Institute on Lake Superior Geology, Marquette, MI, v. 34, p. 85-86. AGE DATING; COPPER CITY FLOW; COPPER HARBOR CONGLOMERATE; GEOCHRONOLOGY; GREENSTONE FLOW; LAKE SHORE TRAPS; MAGMA; MICHIGAN; ORONTO-GROUP; PORTAGE LAKE VOLCANICS; SUBSIDENCE; UNITED-STATES; UPPER-PENINSULA; URANIUM-LEAD; ZIRCONS;

---, 1988, Duration of Midcontinent Rift volcanics and estimation of subsidence rates, repose periods and magma production rates [abs.]: Eos (American Geophysical Union Transactions), v. 69, no. 44, p. 1479. AGE DATING; COPPER CITY FLOW; FLOOD BASALTS; GEOCHRONOLOGY; GREENSTONE FLOW; KEWEENAW PENINSULA; MAGMA; MICHIGAN; PORTAGE LAKE VOLCANICS; RATE; SUBSIDENCE; UNITED-STATES; UPPER-PENINSULA; URANIUM-LEAD; ZIRCON;

---, 1989, Duration of Midcontinent Rift volcanism with estimates of subsidence rates, repose periods and magma production rates [abs.]: Eos (American Geophysical Union Transactions), v. 69, p. 1479. GEOCHRONOLOGY; MAGMA; PRODUCTION; RATE; SUBSIDENCE; VOLCANISM;

Paces, J. B., and Miller, J. D., Jr., 1993, Precise U-Pb ages of Duluth Complex and related mafic intrusions, northeastern Minnesota: New insights for physical, petrogenetic, paleomagnetic and tectono-magmatic processes associated with 1.1 Ga Midcontinent Rift system: Journal of Geophysical Research, v. 98, p. 13997-14013. AGE DATING; DULUTH COMPLEX; DULUTH LAYERED SERIES; GEOCHRONOLOGY; GEOPHYSICS; IGNEOUS PROCESS; LAYERED INTRUSION; LOGAN SILLS; MAFIC; MINNESOTA; NATHAN'S LAYERED SERIES; PALEOMAGNETISM; PARTRIDGE RIVER INTRUSION; PETROGENESIS; POWERLINE GABBRO; SILLS; SONJU LAKE INTRUSION; TECTONO-MAGMATIC; UNITED-STATES; URANIUM-LEAD;

131 Page, G. W., 1971, Occurrence, mineralogy, and geochemistry of barite in the Keweenaw Peninsula, Michigan [M.S. Thesis]: Michigan Technological University, Houghton, 41 p. BARITE; GEOCHEMISTRY; HOUGHTON-COUNTY; KEWEENAW COUNTY; KEWEENAW PENINSULA; MICHIGAN; MINERALOGY; UNITED-STATES; UPPER-PENINSULA;

Palacas, J. G., 1992, Source rock potential of Precambrian rocks in selected basins of the U.S, in Dyman, T. S., ed., Geologic controls and resource potential of natural gas in deep sedimentary basins of the United States:, U. S. Geological Survey, Open-File Report, p. 161-172. ARIZONA; BASINS; CHUAR-GROUP; CLASTIC-ROCKS; GENESIS; IOWA; KANSAS; LAKE SUPERIOR REGION; MICHIGAN; MINNESOTA; NATURAL-GAS; NONESUCH SHALE; ORONTO-GROUP; PETROLEUM; SEDIMENTARY-BASINS; SEDIMENTARY-ROCKS; SEDIMENTS; SULFUR; UNITED-STATES;

Palacas, J. G., and Burruss, R. C., 1994, Preliminary source-rick and maturity evaluation of the Precambrian Nonesuch Formation in the Terra Patrick #7-22 borehole, Midcontinent Rift System, Bayfield County, Wisconsin [abs.]: 40th Annual Institute on Lake Superior Geology, Part 1 - Program and Abstracts, Houghton, MI, v. 40, p. 53. BAYFIELD-COUNTY; BOREHOLE; BUTANE; CH4; DRILL HOLE; ETHANE; GAS; HYDROCARBONS; MATURATION; MATURITY; METHANE; NONESUCH SHALE; OIL; ORONTO-GROUP; TERRA PATRICK; TOTAL ORGANIC CARBON; UNITED-STATES; WISCONSIN;

Palacas, J. G., Schmoker, J. W., Daws, T. A., Pawlewicz, M. J., and Anderson, R. R., 1990, Petroleum source-rock assessment of Middle Proterozoic (Keweenawan) sedimentary rock, Eischeid #1 well, Carroll County, Iowa, in Anderson, R. R., ed., The Amoco M.G. Eischeid #1 deep petroleum test, Carroll County, Iowa: Iowa City, Iowa Department of Natural Resources, Geological Survey Bureau, Special Report Series, No. 2, p. 119-134. CARROLL COUNTY; DRILL HOLE; HYDROCARBONS; IOWA; M.G. EISCHEID NO. 1; ORGANIC-CARBON; PETROLEUM; SEDIMENTARY-ROCKS; SOURCE-ROCKS; UNITED-STATES;

Palacas, J. G., Schmoker, J. W., Pawleicz, M. J., Davis, T. A., and Anderson, R. R., 1990, Petroleum source rock assessment of Middle Proterozoic (Keweenawan) sedimentary rocks, Eischeid #1 well, Carroll County. Iowa, in Anderson, R. R., ed., The Amoco M.G. Eischeid #1 deep petroleum test, Carroll County, Iowa: Report of preliminary investigations: Iowa City, Iowa Department of Natural Resources Geological Survey Bureau, Special Report Series #2, p. 119-134. CARROLL COUNTY; DRILL HOLE; GAS; HYDROCARBONS; IOWA; M.G. EISCHEID NO. 1; OIL; PETROLEUM; RESERVOIR; SEDIMENTARY-ROCKS; SOURCE ROCK; UNITED-STATES;

Palmer, H. C., 1968, Paleomagnetism of Keweenawan volcanic rocks from the Lake Superior region: American Geophysical Union Transactions, v. 49, p. 130-131. GEOPHYSICS; PALEOMAGNETISM; VOLCANIC ROCKS;

---, 1970, Paleomagnetism and correlation of some Middle Keweenawan rocks, Lake Superior: Canadian Journal of Earth Sciences, v. 7, p. 1410-1436. CANADA; CORRELATION; DISTRICT OF ALGOMA; GEOPHYSICS; LAKE SUPERIOR; MAMAINSE POINT; MAMAINSE POINT FORMATION; MICHIPICOTEN ISLAND FORMATION; ONTARIO; PALEOMAGNETISM; REVERSALS; REVERSE MAGNETIZATION; STRATIGRAPHY; VOLCANIC ROCKS;

Palmer, H. C., and Davis, D. W., 1987, Paleomagnetism and U-Pb geochronology of volcanic rocks from Michipicoten Island, Lake Superior, Canada: Precise calibration of the Keweenawan polar wander track: Precambrian Research, v. 37, p. 157-171. AGE DATING; BASALTS; CANADA; CHANNEL LAKE MEMBER; FELSIC; GEOCHRONOLOGY; GEOPHYSICS; MAFIC; MICHIPICOTEN ISLAND; MICHIPICOTEN ISLAND FORMATION; PALEOMAGNETISM; QUARTZ PORPHYRY; URANIUM-LEAD; VOLCANIC ROCKS;

Palmer, H. C., and Halls, H. C., 1986, Paleomagnetism of the Powder Mill Group, Michigan and Wisconsin: A reassessment of the Logan Loop: Journal of Geophysical Research, v. 91, p. 11,571-11,580. GEOPHYSICS; LOGAN LOOP; MICHIGAN; PALEOMAGNETISM; POWDER MILL GROUP; UNITED-STATES; UPPER-PENINSULA; VOLCANIC ROCKS; WISCONSIN;

Palmer, H. C., Halls, H. C., and Pesonen, L. J., 1977, Paleomagnetic investigations on Keweenawan conglomerate pebbles [abs.]: Eos (American Geophysical Union Transactions), v. 58, no. 8, p. 729. COPPER HARBOR CONGLOMERATE; GEOPHYSICS; KEWEENAW COUNTY; MICHIGAN; ORONTO-GROUP; OVERPRINTING; PALEOMAGNETISM; POLE-POSITIONS; REMAGNETIZATION; REVERSALS; SEDIMENTARY-ROCKS; SEDIMENTS; STRATIGRAPHY; UNITED-STATES; UPPER-PENINSULA;

---, 1981, Remagnetization in Keweenawan rocks: Part I, Conglomerates: Canadian Journal of Earth Sciences, v. 18, no. 3, p. 599-618. CANADA; CLASTIC-ROCKS; CONGLOMERATE; DISTRICT OF ALGOMA; GEOPHYSICS; KEWEENAW COUNTY; KEWEENAW PENINSULA; MAMAINSE POINT; MICHIGAN; ONTARIO; PALEOMAGNETISM; REMAGNETIZATION; SEDIMENTARY-ROCKS; SEDIMENTS; STRATIGRAPHY; UNITED-STATES; UPPER-PROTEROZOIC;

Palmer, H. C., Tazaki, K., Fyfe, W. S., and Zhou, Z., 1988, Precambrian glass: Geology, v. 16, p. 221-224. BASALT; CANADA; CHANNEL LAKE MEMBER; CUESTA MEMBER; DAVIEAUX ISLAND MEMBER; DISTRICT OF ALGOMA; FELSIC; MAFIC; MAMAINSE POINT FORMATION; MICHIPICOTEN ISLAND; MICHIPICOTEN ISLAND FORMATION; MINERAL CHEMISTRY; ONTARIO; QUEBEC HARBOUR MEMBER; SOUTH SHORE MEMBER; VOLCANIC GLASS; VOLCANIC ROCKS;

Pan, G. C., Gaard, D., Moss, K., and Heiner, T., 1993, A comparison between cokriging and ordinary kriging: Case study with a polymetallic deposit: Mathematical Geology, v. 25, p. 377-398. COKRIGING; COPPER; CROSS-VALIDATION; DULUTH COMPLEX; DUNKA ROAD; GEOSTATISTICS; KRIGING; LAYERED INTRUSION; MINERAL DEPOSIT; MINERALIZATION; MINNESOTA; NICKEL; ORE DEPOSIT; PARTRIDGE RIVER INTRUSION; PARTRIDGE RIVER TROCTOLITE SERIES; POLYMETALLIC DEPOSIT; RESOURCE ESTIMATION; ST. LOUIS COUNTY; SULFIDE; SULFIDES; UNITED-STATES; VARIOGRAM;

Papadakis, J., and Raza, S. N., 1954, Geology of the Bare Hill and Montreal River areas, Keweenaw County, Michigan [M.S. Thesis]: Michigan Technological University, Houghton, 83 p. GEOLOGY; KEWEENAW COUNTY; KEWEENAW PENINSULA; MICHIGAN; MONTREAL- RIVER; UNITED-STATES; UPPER-PENINSULA;

132 Parbery, D., 1984, Petrogenesis of the Seabrook Lake carbonatite-alkaline complex, NW Ontario [M.S. Thesis]: University of Western Ontario, London, Ontario, Canada, 176 p. ALKALIC COMPLEX; CANADA; CARBONATITE; ONTARIO; ORIGIN; PETROGENESIS; PETROLOGY; SEABROOK LAKE CARBONATITE COMPLEX;

Pardee, F. G., 1929, Recent work of the state geological surveys in Huronian and Keweenawan area: Proceedings of the Lake Superior Mining Institute, v. 27, p. 166-172. ARMENIA MINE; COPPER; CRYSTAL FALLS DISTRICT; DICKINSON COUNTY; FAULTS; GEOLOGY; GEOPHYSICS; GOGEBIC DISTRICT; HOUGHTON-COUNTY; IRON; IRON ORE; IRON-COUNTY; IRON-FORMATION; LOWER- PROTEROZOIC; MAGNETICS; MANSFIELD MINE; MICHIGAN; MICHIGAN COPPER DISTRICT; ORE-DEPOSITS; ORIGIN; STRUCTURAL-GEOLOGY; UNITED-STATES; UPPER-PENINSULA;

Parham, W. E., 1973, Nickel mining and the BWCA: A question of priorities: Journal of the Minnesota Academy of Science, v. 38, p. 105-109. BOUNDARY WATERS CANOE AREA; BWCA; COOK COUNTY; COPPER; DULUTH COMPLEX; ENVIRONMENT; ENVIRONMENTAL; EXPLORATION; LAKE COUNTY; MINING; MINNESOTA; NICKEL; POLLUTION; SULFIDES; UNITED-STATES;

Parker, D. C., 1959, A petrologic investigation of the Greenstone Flow at Tamarack location, Houghton County, Michigan [M.S. Thesis]: Michigan Technological University, Houghton, 95 p. GREENSTONE FLOW; HOUGHTON-COUNTY; MICHIGAN; PETROLOGY; PORTAGE LAKE VOLCANICS; UNITED-STATES; UPPER-PENINSULA;

Parker, J., 1961, Sublacustrine topography of eastern Lake Superior [M.S. Thesis]: Michigan College of Mining and Technology, Houghton LAKE SUPERIOR; VOLCANIC ROCKS;

Parsons, A. L., 1918, Slate Islands, Lake Superior, in: Ontario Department of Mines, 27th Annual Report, part 1, p. 155-167. CANADA; DISTRICT OF THUNDER BAY; ONTARIO; PYROCLASTIC; SLATE ISLANDS; TUFF; VOLCANIC ROCKS;

Parsons, G. E., 1961, Niobium-bearing complexes east of Lake Superior, Algoma and Sudbury districts, Ontario:, Ontario Department of Mines, Geological Report 3, 73 p. ALKALIC COMPLEX; ALKALINE; CANADA; CARBONATITE; DISTRICT OF ALGOMA; DISTRICT OF SUDBURY; LOWER-PROTEROZOIC; NIOBIUM; ONTARIO; PENOKEAN OROGENY; SUDBURY IGNEOUS COMPLEX; SUDBURY STRUCTURE;

Paster, T. P., Denechaud, E. B., and Haskin, L. A., 1969, Rare earths in rocks and minerals of the Duluth Complex [abs.]: 15th Annual Institute on Lake Superior Geology, Oshkosh, WI, v. 15, p. 30. DULUTH COMPLEX; GABBRO LAKE QUADRANGLE; GEOCHEMISTRY; LAKE COUNTY; LAYERED INTRUSION; MINERALOGY; MINNESOTA; RARE-EARTH ELEMENTS; REE; SOUTH KAWISHIWI INTRUSION; UNITED-STATES;

Pasteris, J., and Sassani, D., 1992, DDH's FH-1 and FH-2: Drill Core Library Newsletter, v. 2, p. 10-12. Minnesota Department of Natural Resources, Division of Minerals DULUTH COMPLEX; FH-1; FH-2; FISH LAKE; LAYERED INTRUSION; MINNESOTA; ST. LOUIS COUNTY; UNITED- STATES;

Pasteris, J. D., 1982, Further observations on some Cu-Fe-Ni-sulfide deposits of the Duluth Complex, Minnesota [abs.]: Geological Association of Canada/Mineralogical Association of Canada Program with Abstracts, v. 7, p. 72. COPPER; DULUTH COMPLEX; IRON; LAYERED INTRUSION; MINERAL DEPOSITS; MINERALIZATION; MINNESOTA; NICKEL; ST. LOUIS COUNTY; SULFIDE; SULFIDES; UNITED- STATES;

---, 1983, Fe-Ti oxides in and the significance of fO2 differences within the Duluth Complex [abs.]: Geological Association of Canada/Mineralogical Association of Canada, v. 8, p. A53. DULUTH COMPLEX; ILMENITE; LAYERED INTRUSION; MAGNETITE; MINNESOTA; OXIDE; OXYGEN FUGACITY; ST. LOUIS COUNTY; UNITED-STATES;

---, 1984, Further interpretation of the Cu-Fe-Ni sulfide mineralization in the Duluth Complex, northeastern Minnesota: The Canadian Mineralogist, v. 22, p. 39-53. BABBITT; COPPER; DULUTH COMPLEX; LAKE COUNTY; LAYERED INTRUSION; MINERAL DEPOSIT; MINERALIZATION; MINNAMAX; MINNESOTA; NICKEL; ORE DEPOSIT; ORIGIN; PARTRIDGE RIVER INTRUSION; SOUTH KAWISHIWI INTRUSION; SPRUCE ROAD; ST. LOUIS COUNTY; SULFIDE; SULFIDES; UNITED-STATES;

---, 1985, Relationships between temperature and oxygen fugacity among Fe-Ti oxides in two regions of the Duluth Complex: The Canadian Mineralogist, v. 23, p. 111-127. BABBITT; COPPER; DULUTH COMPLEX; ILMENITE; LAKE COUNTY; LAYERED INTRUSION; MAGNETITE; MINERAL DEPOSIT; MINERALIZATION; MINNAMAX; MINNESOTA; NICKEL; OXIDE; OXYGEN FUGACITY; PARTRIDGE RIVER INTRUSION; SOUTH KAWISHIWI INTRUSION; SPRUCE ROAD; ST. LOUIS COUNTY; SULFIDES; TEMPERATURE; UNITED-STATES;

---, 1988, Secondary graphitization in mantle-derived rocks: Geology, v. 16, p. 804-807. AFRICA; ANALYTICAL TECHNIQUES; BABBITT; CH4; DULUTH COMPLEX; FISH LAKE; FLUID INCLUSIONS; GRAPHITE; KAO KIMBERLITE; LAYERED INTRUSION; LESOTHO; METHANE; MINERAL DEPOSIT; MINNAMAX; MINNESOTA; OXYGEN FUGACITY; PARTRIDGE RIVER INTRUSION; RAMAN MICROPROBE; SOUTH AFRICA; ST. LOUIS COUNTY; THERMODYNAMICS; UNITED-STATES;

---, 1989, Methane-nitrogen fluid inclusions in igneous rocks from the Duluth Complex [abs.]: Pacrofi II, v. 2, p. 51. DULUTH COMPLEX; FLUID INCLUSIONS; LAYERED INTRUSION; METHANE; MINNESOTA; NITROGEN; UNITED-STATES;

---, 1990, Hydrous alteration zones along the SW contact of the Duluth Complex, MN: Fluid-inclusion evidence for igneous and metamorphic processes [abs.]: Geological Society of America Abstracts with Programs, v. 22, no. 7, p. A347. ALTERATION; ANIMIKIE; ANIMIKIE GROUP; AQUEOUS; CARBON DIOXIDE; CH4; CO2; DRILL HOLE; DULUTH COMPLEX; FHL-2; FLUID INCLUSIONS; FLUIDS; IGNEOUS;

133 LAYERED INTRUSION; LOWER-PROTEROZOIC; METAMORPHISM; METHANE; MINNESOTA; NITROGEN; SEDIMENTARY-ROCKS; ST. LOUIS COUNTY; UNITED-STATES; VIRGINIA FORMATION; VOLATILES;

Pasteris, J. D., Harris, T. N., and Sassani, D. C., 1992, Involvement of aqueous fluids in the rift environment of the Duluth Complex, Minnesota [abs.]: Geological Society of America Abstracts with Programs, v. 24, no. 7, p. A61. AQUEOUS; DULUTH COMPLEX; FLUIDS; LAYERED INTRUSION; MINNESOTA; RIFTING; UNITED-STATES;

---, 1994, Dual immiscibility of dominantly aqueous fluids in rocks of the southwestern footwall of the Duluth Complex, NE Minnesota [abs.]: 40th Annual Institute on Lake Superior Geology, Part 1 - Program and Abstracts, Houghton, MI, v. 40, p. 54-55. AQUEOUS; CALCIUM CHLORIDE; CARBON DIOXIDE; CH4; CO2; DULUTH COMPLEX; FHL-2; FISH LAKE; FLUID IMMISCIBILITY; FLUID INCLUSIONS; FLUIDS; HOMOGENIZATION TEMPERATURE; LAYERED INTRUSION; METHANE; MINNESOTA; N2; NITROGEN; RAMAN MICROPROBE; SALINITY; ST. LOUIS COUNTY; UNITED-STATES;

---, 1995, Interactions of mixed volatile-brine fluids in rocks of the southwestern footwall of the Duluth Complex, Minnesota: Evidence from aqueous fluid inclusions: American Journal of Science, v. 295, p. 125-172. ALTERATION; ANIMIKIE BASIN; ANIMIKIE GROUP; AQUEOUS; BRINES; COPPER; DULUTH COMPLEX; DULUTH LAYERED SERIES; FISH LAKE; FLUID INCLUSIONS; FLUIDS; FOOTWALL; HYDROTHERMAL; HYDROUS SILICATES; IMMISCIBILITY; IRON; LOWER-PROTEROZOIC; METASEDIMENTARY; METASEDIMENTS; MINERALIZATION; MINNESOTA; NICKEL; ORIGIN; PGE; PLATINUM-GROUP ELEMENTS; PRESSURE; SALINITY; ST. LOUIS COUNTY; TEMPERATURE; THOMSON FORMATION; TITANIUM; UNITED-STATES; VOLATILES;

Patelke, R., and Severson, M., 1992, Petrology and origin of the northern Colvin Creek Body, Duluth Complex, NE Minnesota [abs.]: 38th Annual Institute on Lake Superior Geology, Hurley, WI, v. 38, p. 82-84. COLVIN CREEK; DULUTH COMPLEX; LAYERED INTRUSION; MINNESOTA; ORIGIN; PARTRIDGE RIVER INTRUSION; PETROGENESIS; PETROLOGY; ST. LOUIS COUNTY; UNITED-STATES; VOLCANIC;

Patelke, R. L., 1994, The Babbitt copper-nickel deposit, Part A: Digital drill hole data files for the Babbitt and Serpentine copper-nickel deposits:, Natural Resources Research Institute, University of Minnesota, Duluth, Technical Report NRRI/TR-94/21A, 48 p. BABBITT; BASE METAL ANALYSES; BATHTUB; BIBLIOGRAPHY; COPPER; DRILL HOLE; DRILL HOLE SURVEY; DULUTH COMPLEX; GEOCHEMISTRY; GOLD; LAYERED INTRUSION; LOCAL BOY; MINERAL DEPOSIT; MINNAMAX; MINNESOTA; NICKEL; NRRI; PARTRIDGE RIVER INTRUSION; PGE; PLATINUM-GROUP ELEMENTS; PRECIOUS METAL ANALYSES; SERPENTINE; SILVER; SOUTH KAWISHIWI INTRUSION; SOUTHWEST EXTENSION; ST. LOUIS COUNTY; SULFUR; SURVEYS; TIGER BOY; UNITED-STATES; UPDIP BATHTUB;

Patenaude, R., 1964, Presentation of a regional aeromagnetic map of Wisconsin [abs.]: 10th Annual Institute on Lake Superior Geology, Ispheming, MI, v. 10, p. 52. AEROMAGNETIC SURVEY; AEROMAGNETICS; GEOPHYSICS; GOGEBIC DISTRICT; IRON-FORMATION; LOWER- PROTEROZOIC; REGIONAL; UNITED-STATES; WISCONSIN;

Patenaude, R. S., 1964, Results of regional aeromagnetic surveys of eastern Upper Michigan, central Lower Michigan and southeastern Illinois:, Wisconsin Geophysical and Polar Research Center, Report No. 64, 51 p. AEROMAGNETIC SURVEY; AEROMAGNETICS; GEOPHYSICS; ILLINOIS; LOWER PENINSULA; MICHIGAN; REGIONAL; UNITED-STATES; UPPER-PENINSULA;

Patenaude, R. W., 1962, Geophysical evidence for the presence of Keweenawan volcanics in the area of upper Michigan between Marquette and Sault Ste. Marie [abs.]: 8th Annual Institute on Lake Superior Geology, Houghton, MI, v. 8, p. 14. AEROMAGNETIC SURVEY; AEROMAGNETICS; GEOPHYSICS; MICHIGAN; UNITED-STATES; UPPER-PENINSULA; VOLCANIC ROCKS;

---, 1966, A regional aeromagnetic survey of Wisconsin, in Steinhart, J. S., and Smith, T. J., eds., The Earth beneath the continents: Washington, D.C., American Geophysical Union, Geophysical Monpgraph 10, p. 111-126. AEROMAGNETIC SURVEY; AEROMAGNETICS; GEOPHYSICS; REGIONAL; UNITED-STATES; WISCONSIN;

Patterson, W. A., and Aaseng, N. E., 1978, Soils of the Study Area: Minnesota Environmental Quality Board, Regional Copper-Nickel Study report. COPPER; DULUTH COMPLEX; LAKE COUNTY; LAYERED INTRUSION; MINNESOTA; NICKEL; REGIONAL COPPER-NICKEL STUDY; SOILS; ST. LOUIS COUNTY; UNITED-STATES;

Paull, R. A., 1985, Oil and gas potential of Keweenawan midcontinent rift system in northwestern Wisconsin [abs.]: Geological Society of America Abstracts with Programs, v. 17, no. 5, p. 321. BAYFIELD-GROUP; COPPER HARBOR CONGLOMERATE; ECONOMIC GEOLOGY; EXPLORATION; FREDA-SANDSTONE; FUEL-RESOURCES; GAS; NONESUCH SHALE; OIL; ORONTO-GROUP; PETROLEUM; SANDSTONE; SEDIMENTARY-ROCKS; SEDIMENTS; STRATIGRAPHY; UNITED-STATES; WISCONSIN;

---, 1986, Resource evaluation; Oil and gas potential of Keweenawan Midcontinent Rift System in northwestern Wisconsin: Geoscience Wisconsin, v. 11, p. 64-73. ASHLAND COUNTY; BAYFIELD-COUNTY; COPPER HARBOR CONGLOMERATE; ECONOMIC GEOLOGY; FREDA- SANDSTONE; FUEL-RESOURCES; GAS; NATURAL-GAS; NONESUCH SHALE; NORTHWESTERN-WISCONSIN; ORONTO-GROUP; PETROLEUM; SAINT CROIX HORST; SANDSTONE; SEDIMENTARY-ROCKS; SEDIMENTS; UNITED-STATES; WISCONSIN;

Penczak, R. S., 1992, Petrology and mineral chemistry of the Middleton copper occurrence of the western gabbro, Coldwell alkaline complex, Ontario [B.Sc. Thesis]: University of Waterloo, Waterloo, Ontario, Canada, 121 p. ALKALIC COMPLEX; ALKALINE; ALKALINE INTRUSION; CANADA; COLDWELL COMPLEX; COPPER; DISTRICT OF THUNDER BAY; MIDDLETON; MINERAL CHEMISTRY; MINERALIZATION; ONTARIO; PETROLOGY; PORT COLDWELL; WESTERN GABBRO;

Perry, E. C., Jr., and Bonnichsen, B., 1966, Quartz and magnetite: Oxygen-18 and oxygen-16 fractionation in metamorphosed Biwabik Iron-formation: Science, v. 153, p. 528-529. BIWABIK IRON-FORMATION; CONTACT METAMORPHISM; DULUTH COMPLEX; FRACTIONATION; IRON-

134 FORMATION; ISOTOPE FRACTIONATION; LAYERED INTRUSION; LOWER-PROTEROZOIC; MAGNETITE; MINNESOTA; OXYGEN ISOTOPES; QUARTZ; ST. LOUIS COUNTY; STABLE-ISOTOPES; UNITED-STATES;

Perry, E. C., Jr., and Morse, J. W., 1967, Oxygen isotopic evidence of metamorphism in the Biwabic iron-formation, Minnesota [abs.]: 13th Annual Institute on Lake Superior Geology, East Lansing, MI, v. 13, p. 31. ANIMIKIE; BIWABIK IRON-FORMATION; CONTACT METAMORPHISM; DULUTH COMPLEX; IRON-FORMATION; LOWER-PROTEROZOIC; METAMORPHISM; MINNESOTA; OXYGEN ISOTOPES; STABLE- ISOTOPES; UNITED-STATES;

Pesonen, L. J., 1978, Paleomagnetism, paleointensity, and paleosecular variation studies of Keweenawan igneous and baked contact rocks [Ph.D. Dissertation]: University of Toronto, Ontario, Canada CANADA; CONTACT METAMORPHISM; GEOPHYSICS; IGNEOUS-ROCKS; LOGAN SILLS; METAMORPHISM; ONTARIO; PALEOMAGNETISM; SILLS; VOLCANIC;

---, 1979, Paleomagnetism of late Keweenawan igneous and baked contact rocks from Thunder Bay district, northern Lake Superior: Geological Society of Finland, v. 51, p. 27-44. CANADA; CONTACT METAMORPHISM; DISTRICT OF THUNDER BAY; GEOPHYSICS; ONTARIO; PALEOMAGNETISM; THUNDER BAY;

---, 1979, Paleomagnetism of late Precambrian Keweenawan igneous rocks and baked contacts from the Thunder Bay District, north Lake Superior: Geological Survey of Finland Bulletin, v. 51, p. 27-44. CANADA; CONTACT METAMORPHISM; DIABASE; DISTRICT OF THUNDER BAY; GEOPHYSICS; LOGAN SILLS; METAMORPHISM; ONTARIO; PALEOMAGNETISM; REVERSE POLARITY; SILLS;

Pesonen, L. J., and Halls, H. C., 1977, Paleomagnetic and paleointensity studies of normal and reversed Keweenawan rocks - Implications for the polar wander path of North America [abs.]: 23rd Annual Institute on Lake Superior Geology, Thunder Bay, ONT, v. 23, p. 39. ANIMIKIE; CONTACT METAMORPHISM; GEOPHYSICS; LOWER-PROTEROZOIC; METAMORPHISM; NORMAL POLARITY; PALEOMAGNETISM; POLAR- WANDERING; REVERSE POLARITY; ROVE FORMATION; SIBLEY GROUP; UNITED-STATES;

---, 1979, The paleomagnetism of Keweenawan dikes from Baraga and Marquette counties, northern Michigan: Canadian Journal of Earth Sciences, v. 16, p. 2136-2149. BARAGA COUNTY; DIKE; GEOPHYSICS; MARQUETTE COUNTY; MICHIGAN; PALEOMAGNETISM; UNITED- STATES;

---, 1983, Geomagnetic field intensity and reversal asymmetry in late Precambrian Keweenawan rocks: Geophysical Journal of the Royal Astronomical Society, v. 73, no. 1, p. 241-270. BARAGA COUNTY; CANADA; CAPE GARGANTUA LAVAS; COPPER HARBOR LAVAS; DISTRICT OF ALGOMA; DISTRICT OF THUNDER BAY; GEOPHYSICS; MAGNETIC-INTENSITY; MAMAINSE POINT FORMATION; MARQUETTE COUNTY; MICHIGAN; MINNESOTA; NORTH SHORE VOLCANIC GROUP; ONTARIO; OSLER GROUP; PALEOMAGNETISM; SEDIMENTARY-ROCKS; SEDIMENTS; SIBLEY GROUP; STRATIGRAPHY; THUNDER BAY DIKES; UNITED-STATES; VOLCANIC ROCKS;

Peterman, Z. E., 1984, Middle Proterozoic events in northeast Wisconsin and adjacent Michigan as defined by Rb-Sr biotite ages [abs.]: 30th Annual Institute on Lake Superior Geology, Wausau, WI, v. 30, p. 50-51. AGE DATING; BIOTITE; DUNBAR GNEISS DOME; FELCH TROUGH; GEOCHRONOLOGY; MICHIGAN; MINERAL AGES; RUBIDIUM-STRONTIUM; UNITED-STATES; UPPER-PENINSULA; WISCONSIN;

Peterman, Z. E., and Sims, P. K., 1988, The Goodman swell: A lithospheric flexure caused by crustal loading along the Midcontinent Rift System: Tectonics, v. 7, p. 1077-1090. CRUST; GOODMAN SWELL; LITHOSPHERE; STRUCTURAL-GEOLOGY; TECTONICS;

Petterson, G. C., Scott, J. F., Mason, J. K., Schneiders, B. R., MacTavish, A. D., Dutka, R. J., Kennedy, M. C., White, G. D., and Hinze, P., 1987, Report of activities (1986), regional and resident geologists, in: Ontario Geological Survey, Miscellaneous Paper 134, p. 72-127. ALKALIC COMPLEX; ALKALINE; ALKALINE INTRUSION; CANADA; COLDWELL COMPLEX; DISTRICT OF THUNDER BAY; GEORDIE LAKE INTRUSION; MINERALIZATION; ONTARIO; PGE; PLATINUM-GROUP ELEMENTS; PORT COLDWELL; PROTEROZOIC;

Pettijohn, F. J., 1957, Sedimentary rocks: New York, Harper and Row, 718 p. NONESUCH SHALE; ORONTO-GROUP; SEDIMENTARY- ROCKS;

Petzet, G. A., 1984, Only deep drilling lags in the Midcontinent: Oil and Gas Journal, v., p. 100-103. DRILLING; EXPLORATION; FOREST CITY BASIN; GAS; HYDROCARBONS; IOWA; KANSAS; MICHIGAN; MINNESOTA; NEBRASKA; OIL; ORDOVICIAN; PALEOZOIC; PHANEROZOIC; REGIONAL; UNITED-STATES; WISCONSIN;

---, 1991, Rare Wisconsin wildcat to target Midcontinent Rift Nonesuch Shale: Oil and Gas Journal, v. 89, no. 42, p. 83. BAYFIELD-COUNTY; ECONOMIC GEOLOGY; EXPLORATION; MICHIGAN; NONESUCH SHALE; ORONTO-GROUP; PETROLEUM; SEDIMENTARY-ROCKS; SEDIMENTS; UNITED-STATES; WISCONSIN;

Philbin, P. W., and Gilbert, F. P., 1966, Aeromagnetic map of southeastern Minnesota: U. S. Geological Survey, Geophysical Investigations, Map GP-559. AEROMAGNETIC SURVEY; AEROMAGNETICS; BASEMENT; GEOPHYSICS; MAP; MINNESOTA; UNITED-STATES;

Philbin, P. W., and Vargo, J. L., 1966, Aeromagnetic map of parts of the Ironwood and Wakefield quadrangles, Gogebic County, Michigan, and Iron and Vilas Counties, Wisconsin: U. S. Geological Survey, Geophysical Investigations, Map GP-578, scale 1:62,500. AEROMAGNETICS; ARCHEAN; GEOPHYSICS; GOGEBIC-COUNTY; IRON-COUNTY; IRONWOOD QUADRANGLE; MAP; MICHIGAN; UNITED-STATES; UPPER-PENINSULA; VILAS COUNTY; WAKEFIELD QUADRANGLE; WISCONSIN;

Philip, R. P., and Van De Meent, D., 1983, Characterization of Precambrian kerogens by analytical pyrolysis: Precambrian Research, v. 20, p. 3-16. AFRICA; ARCHEAN; AUSTRALIA; COPPER; FIG TREE; KEROGEN; MICHIGAN; MICHIGAN COPPER DISTRICT; MINNESOTA;

135 NONESUCH SHALE; ONTONAGON-COUNTY; ONVERWACHT; ORONTO-GROUP; PYROLYSIS; SKILLOGALEE; SOUDAN IRON- FORMATION; SOUDAN MINE; SOUTH AFRICA; ST. LOUIS COUNTY; UNITED-STATES; UPPER-PENINSULA; WHITE PINE MINE;

Phillion, G. W., 1962, Fracture pattern analysis of the Keweenaw Peninsula [M.S. Thesis]: Michigan Technological University, Houghton, 87 p. FRACTURES; HOUGHTON-COUNTY; KEWEENAW COUNTY; KEWEENAW PENINSULA; MICHIGAN; STRUCTURAL-GEOLOGY; UNITED-STATES; UPPER-PENINSULA;

Phinney, W. C., 1963, Structure within the Duluth Gabbro Complex, Gabbro Lake and Greenwood Lake quadrangles, Lake County, Minnesota [abs.]: 9th Annual Institute on Lake Superior Geology, Duluth, MM, v. 9, p. 22. DULUTH COMPLEX; GABBRO LAKE; GABBRO LAKE QUADRANGLE; GREENWOOD LAKE; GREENWOOD LAKE QUADRANGLE; LAKE COUNTY; LAYERED INTRUSION; MINNESOTA; STRUCTURAL-GEOLOGY; UNITED-STATES;

---, 1968, Anorthosite occurrences in Keweenawan rocks of northeastern Minnesota, in Isachsen, Y. W., ed., The origin of anorthosite and related rocks:, New York State Museum and Science Service, Memoir 18, p. 135-147. ANORTHOSITE; ANORTHOSITIC SERIES; DULUTH COMPLEX; LAYERED INTRUSION; MINNESOTA; UNITED-STATES;

---, 1968, Guide for field trip in the Duluth Complex near Ely, Minnesota: 14th Annual Institute on Lake Superior Geology, Superior, WI, v. 14, p. 6. COPPER; DULUTH COMPLEX; GEOLOGY; GUIDEBOOK; MINNESOTA; NICKEL; SULFIDES; UNITED-STATES;

---, 1969, The Duluth Complex in the Gabbro Lake quadrangle, Minnesota:, Minnesota Geological Survey, Report of Investigations 9, 20 p. ANORTHOSITE; BALD EAGLE INTRUSION; BALD EAGLE LAKE; COOK COUNTY; COPPER; DIFFERENTIATION; DIKE; DULUTH COMPLEX; GABBRO LAKE; GABBRO LAKE QUADRANGLE; GOSSANS; GRANITE; GRANOPHYRE; GREENWOOD LAKE; IGNEOUS PROCESS; LAKE COUNTY; LAYERED INTRUSION; MINERAL CHEMISTRY; MINERALIZATION; MINNESOTA; NICKEL; NICKEL LAKE; OMADAY LAKE; ORE DEPOSIT; PEGMATITE; PETROLOGY; SOUTH KAWISHIWI INTRUSION; SULFIDES; TROCTOLITE SERIES; UNITED-STATES;

---, 1969, Geology of central part of Duluth Complex, in Summary of field work, 1969:, Minnesota Geological Survey, Information Circular 7, p. 18. DULUTH COMPLEX; LAYERED INTRUSION; MINNESOTA; UNITED-STATES;

---, 1970, Chemical relations between Keweenawan lavas and the Duluth Complex, Minnesota: Geological Society of America Bulletin, v. 81, p. 2487- 2495. DULUTH COMPLEX; GEOCHEMISTRY; LAYERED INTRUSION; MINNESOTA; NORTH SHORE VOLCANIC GROUP; UNITED- STATES; VOLCANIC; VOLCANIC ROCKS;

---, 1972, Northern prong, Duluth Complex, in Sims, P. K., and Morey, G. B., eds., Geology of Minnesota: A Centennial Volume: St. Paul, Minnesota Geological Survey, p. 346-353. DULUTH COMPLEX; LAYERED INTRUSION; MINNESOTA; UNITED-STATES;

---, 1972, Duluth Complex, history and nomenclature, in Sims, P. K., and Morey, G. B., eds., Geology of Minnesota: A Centennial Volume: St. Paul, Minnesota Geological Survey, p. 333-334. DULUTH COMPLEX; GEOLOGY; HISTORY; LAYERED INTRUSION; MINNESOTA; NOMENCLATURE; UNITED-STATES;

---, 1972, Northwestern part of Duluth Complex, in Sims, P. K., and Morey, G. B., eds., Geology of Minnesota: A Centennial Volume: St. Paul, Minnesota Geological Survey, p. 335-345. DULUTH COMPLEX; LAYERED INTRUSION; MINNESOTA; UNITED-STATES;

Phinney, W. C., and Weiblen, P. W., 1964, Correlation between field relations and microprobe analysis in the Duluth Gabbro Complex [abs.], in Abstracts of 1963:, Geological Society of America, Special Paper 76, p. 129-130. DULUTH COMPLEX; GEOLOGY; LAYERED INTRUSION; MINERAL CHEMISTRY; MINNESOTA; UNITED-STATES;

Platt, R. G., and Mitchell, R. H., 1979, The Marathon dikes, I: Zirconium-rich titanian garnets and manganoan magnesium ulvospinel-magnetite spinels: American Mineralogist, v. 64, p. 546-550. ALKALIC COMPLEX; ALKALINE; ALKALINE INTRUSION; CANADA; COLDWELL COMPLEX; DIKES; DISTRICT OF THUNDER BAY; GARNETS; MAGNETITE; MARATHON; MINERAL CHEMISTRY; MINERALOGY; ONTARIO; PORT COLDWELL; SPINEL; ULVÖSPINEL;

---, 1982, Rb-Sr geochronology of the Coldwell Complex, northwestern Ontario, Canada: Canadian Journal of Earth Sciences, v. 19, p. 1796-1801. AGE DATING; ALKALIC COMPLEX; ALKALINE; ALKALINE INTRUSION; CANADA; COLDWELL COMPLEX; DISTRICT OF THUNDER BAY; GEOCHRONOLOGY; ONTARIO; PORT COLDWELL; RUBIDIUM-STRONTIUM; SUPERIOR PROVINCE;

---, 1982, The Marathon dikes: Ultrabasic lamprophyres from the vicinity of McKellar Harbour, northwestern Ontario: American Mineralogist, v. 67, p. 907-916. ALKALIC COMPLEX; ALKALINE; ALKALINE INTRUSION; CANADA; COLDWELL COMPLEX; DIKES; DISTRICT OF THUNDER BAY; LAMPROPHYRE; MARATHON; MCKELLAR HARBOUR; ONTARIO; PORT COLDWELL; ULTRAMAFIC;

---, 1984, Rb-Sr geochronology of the Coldwell Complex, northwestern Ontario, Canada: Reply: Canadian Journal of Earth Sciences, v. 21, p. 126. AGE DATING; ALKALIC COMPLEX; ALKALINE; ALKALINE INTRUSION; CANADA; COLDWELL COMPLEX; DISTRICT OF THUNDER BAY; GEOCHRONOLOGY; ONTARIO; PORT COLDWELL; RUBIDIUM-STRONTIUM; SUPERIOR PROVINCE;

Platt, R. G., Mitchell, R. H., and Holm, R. M., 1983, Marathon dikes: Rb-Sr and K-Ar geochronology of ultrabasic lamprophyres from the vicinity of McKellar Harbour, northwestern Ontario, Canada: Canadian Journal of Earth Sciences, v. 20, p. 961-967. AGE DATING; ALKALIC COMPLEX; ALKALINE; ALKALINE INTRUSION; CANADA; COLDWELL COMPLEX; DIKE; DISTRICT OF THUNDER BAY; GEOCHRONOLOGY; LAMPROPHYRE; MARATHON; MCKELLAR HARBOUR; ONTARIO; PORT COLDWELL; POTASSIUM-ARGON; RUBIDIUM-STRONTIUM; SUPERIOR PROVINCE; ULTRAMAFIC;

136 Pojar, M. J., and Kreisman, P. J., 1979, Smelting and Refining: Minneapolis, Minnesota Environmental Quality Board, Chapter 4, 167 p. AIR POLLUTION; COPPER; DULUTH COMPLEX; ENVIRONMENT; HYDROMETALLURGY; LAYERED INTRUSION; METALLURGY; MINERAL PROCESSING; MINNESOTA; NICKEL; POLLUTION; REFINING; REGIONAL COPPER-NICKEL STUDY; SMELTING; UNITED- STATES;

Pollastro, R. M., and Finn, T. M., 1990, Clay mineralogy and bulk rock composition of selected cutting samples from the Amoco Eischeid #1 well, Carroll County, Iowa: A reconnaissance study from x ray powder diffraction analysis, in Anderson, R. R., ed., The Amoco M. G. Eischeid #1 deep petroleum test, Carroll County, Iowa: Report of preliminary investigations: Iowa City, Iowa Department of Natural Resources Geological Survey Bureau, Special Report Series #2, p. 143-152. CARROLL COUNTY; CLAY-MINERALOGY; DRILL HOLE; IOWA; M.G. EISCHEID NO. 1; MINERALOGY; UNITED-STATES;

Pollock, J. P., Schillinger, A. W., and Bur, T., 1960, A geochemical anomaly associated with a glacially transported boulder train, Mt. Bohemia, Keweenaw County, Michigan: 21st International Geological Congress, Proceedings, v. 21, p. 20-27. BOHEMIA CONGLOMERATE; BORNITE; BOULDER TRAIN; CHALCOCITE; COPPER; DISSEMINATED ORE; ELECTROMAGNETIC-SURVEYS; ELECTROMAGNETICS; EXPLORATION; GEOCHEMISTRY; GEOPHYSICS; GLACIAL GEOLOGY; GLACIAL TILL; INDUCED POLARIZATION; KEWEENAW COUNTY; KEWEENAW FAULT; LAC LA BELLE CONGLOMERATE; LAC LA BELLE FISSURE; MENDOTA FISSURE; MICHIGAN; MICHIGAN COPPER DISTRICT; MINERALIZATION; MOUNT BOHEMIA; MOUNT BOHEMIA STOCK; NATIVE COPPER; SAMPLING; SELF-POTENTIAL; SELF-POTENTIAL SURVEYS; SOIL; SULFIDES; UNITED-STATES; UPPER-PENINSULA;

Pollock, J. P., and Weege, R. J., 1966, Exploration methods in the Copper Country, Keweenaw Peninsula, Michigan, in: Nevada Bureau of Mines, Report 13, pt. C, p. 51-61. COPPER; EXPLORATION; KEWEENAW PENINSULA; MICHIGAN; MICHIGAN COPPER DISTRICT; NATIVE COPPER; UNITED-STATES; UPPER-PENINSULA;

Pollock, S. J., 1987, The isotopic geochemistry of the Prairie Lake carbonatite, Ontario [M.S. Thesis]: Carleton University, Ottawa, Ontario, Canada, 71 p. AGE DATING; CANADA; DISTRICT OF THUNDER BAY; GEOCHRONOLOGY; ONTARIO; PRAIRIE LAKE CARBONATITE COMPLEX; RUBIDIUM-STRONTIUM; SAMARIUM-NEODYMIUM;

Pope, N., 1976, Petrology and structural relations of the Brule Lake intrusions, Cook County, Minnesota [M.S. Thesis]: University of Minnesota, Duluth, 100 p. BRULE LAKE INTRUSIONS; COOK COUNTY; DULUTH COMPLEX; MINNESOTA; PETROLOGY; STRUCTURAL- GEOLOGY; UNITED-STATES;

Pope, N. M., 1976, Petrology and structure of the late Precambrian Silver Creek Cliff and Lafayette Bluff mafic intrusions, Lake County, Minnesota [abs.]: 22nd Annual Institute on Lake Superior Geology, St. Paul, MN, v. 22, p. 49. BEAVER RIVER DIABASE; DIABASE; DULUTH COMPLEX; ENCAMPMENT RIVER; GEOCHEMISTRY; LAFAYETTE BLUFF; LAKE COUNTY; MINNESOTA; NORTH SHORE VOLCANIC GROUP; PETROLOGY; SILLS; SILVER CREEK CLIFF; STRUCTURAL-GEOLOGY; UNITED-STATES;

Pratt, L. M., Summons, R. E., and Hieshima, G. B., 1991, Sterane and triterpane biomarkers in the Precambrian Nonesuch Formation, North American Midcontinent Rift: Geochimica et Cosmochimica Acta, v. 55, no. 3, p. 911-916. BIOMARKERS; COPPER; GEOCHEMISTRY; HYDROCARBONS; MICHIGAN; MICHIGAN COPPER DISTRICT; NONESUCH SHALE; ONTONAGON-COUNTY; ORGANIC GEOCHEMISTRY; ORGANIC-MATERIALS; ORONTO-GROUP; SEDIMENTARY-ROCKS; SEDIMENTS; STERANES; TRITERPANES; UNITED-STATES; UPPER-PENINSULA; WHITE PINE MINE; WISCONSIN;

Price, K. L., 1993, Thermal history of the Oronto Group: Midcontinent Rift System, Michigan: Illite-smectite geothermometry as a limiting parameter for numerical simulations [M.S. Thesis]: Michigan Technological University, Houghton GEOTHERMOMETRY; MICHIGAN; ORONTO-GROUP; THERMAL HISTORY; UNITED-STATES; UPPER-PENINSULA;

Price, K. L., Huntoon, J. E., and McDowell, S. D., in review, Thermal history of the 1.1 Ga Nonesuch Formation, North American Midcontinent rift at White Pine, Michigan: American Association of Petroleum Geologists Bulletin, v. . COPPER; MICHIGAN; MICHIGAN COPPER DISTRICT; NONESUCH SHALE; ONTONAGON-COUNTY; ORONTO-GROUP; THERMAL; THERMAL HISTORY; UNITED-STATES; UPPER- PENINSULA; WHITE PINE MINE;

Price, K. L., and McDowell, S. D., 1991, Illite/smectite geothermometry of the Oronto Group, southern Lake Superior basin, Michigan [abs.]: Clay Minerals Society 28th Annual Meeting, Program and Abstracts, v. 28, p. 131. AUTHIGENESIS; CALUMET; CHLORITE; CHLORITE-GROUP; COPPER HARBOR CONGLOMERATE; DIAGENESIS; FREDA-SANDSTONE; GEOTHERMOMETRY; LAKE SUPERIOR; MICHIGAN; ORONTO-GROUP; SANDSTONE; SEDIMENTARY-ROCKS; SEDIMENTS; UNITED-STATES; UPPER-PENINSULA;

---, 1993, Illite/smectite geothermometry of the Proterozoic Oronto Group, Midcontinent rift system: Clays and Clay Minerals, v. 41, p. 134-147. CLAY MINERALS; COPPER; DDH WP; DIAGENESIS; DO-14; DO-5; DRILL HOLE; FREDA-SANDSTONE; GEOTHERMAL-GRADIENT; GEOTHERMOMETRY; HYDROCARBONS; ILLITE; IRON RIVER SYNCLINE; METAMORPHISM; MICHIGAN; MICHIGAN COPPER DISTRICT; MINERALIZATION; MINERALOGY; ONTONAGON-COUNTY; ORONTO-GROUP; RETROGRADE; SANDSTONE; SMECTITE; THERMAL HISTORY; THERMAL-MATURITY; UNITED-STATES; UPPER-PENINSULA; W-11; WHITE PINE MINE; WISCONSIN; WPB-1;

Prosen, B. J., and Johnson, A. M., 1987, Natural brine contamination of groundwater in the Keweenawan rocks of northern Michigan [abs.]: 33rd Annual Institute on Lake Superior Geology, Wawa, ONT, v. 33, p. 56. BRINES; CONTAMINATION; FREDA-SANDSTONE; GROUNDWATER; HYDROGEOLOGY; LAKE SUPERIOR; MICHIGAN; NONESUCH SHALE; ORONTO-GROUP; SALT WATER INTRUSION; SANDSTONE; SEDIMENTARY-ROCKS; SEDIMENTS; SURVEYS; UNITED-STATES; UPPER-PENINSULA;

Pulka, F. S., 1983, Depositional and structural features of the upper Freda Sandstone [abs.]: 29th Annual Institute on Lake Superior Geology, Houghton, MI, v. 29, p. 34. CLASTIC-ROCKS; CLASTICS; DISPLACEMENTS; FAULTS; FRACTURES; FREDA-SANDSTONE; INTERPRETATION; JOINTS; MICHIGAN; NORMAL-FAULTS; ORONTO-GROUP; PLANAR BEDDING STRUCTURES; SANDSTONE;

137 SEDIMENTARY STRUCTURES; SEDIMENTARY-PETROLOGY; SEDIMENTARY-ROCKS; SEDIMENTS; STRUCTURAL-GEOLOGY; TEXTURES; UNITED-STATES; UPPER-PENINSULA;

Pumpelly, R., 1873, Copper district [Upper Peninsula]:, Michigan Geological Survey, 143 p. COPPER; MICHIGAN; MICHIGAN COPPER DISTRICT; MINERALIZATION; NATIVE COPPER; UNITED-STATES; UPPER-PENINSULA;

---, 1880, Lithology of the Keweenawan or copper-bearing system: Geology of Wisconsin, v. 3, p. 27-49. COPPER; LITHOLOGY; UNITED- STATES; WISCONSIN;

Puskas, F. F., 1964, Geology of the Port Coldwell area:, Ontario Department of Mines, Open File Report, ALKALIC COMPLEX; ALKALINE; ALKALINE INTRUSION; CANADA; COLDWELL COMPLEX; DISTRICT OF THUNDER BAY; GEOLOGY; ONTARIO; PORT COLDWELL; PROTEROZOIC;

Puskas, F. P., 1967, The geology of the Port Coldwell area, district of Thunder Bay:, Ontario Department of Mines, Open File Report 5014, 114 p. ALKALIC COMPLEX; ALKALINE; ALKALINE INTRUSION; CANADA; COLDWELL COMPLEX; DISTRICT OF THUNDER BAY; GEOLOGY; ONTARIO; PORT COLDWELL; SUPERIOR PROVINCE;

---, 1967, Port Coldwell area: Ontario Department of Mines, Preliminary, Map P. 114, scale 1:31,680. ALKALIC COMPLEX; ALKALINE; ALKALINE INTRUSION; CANADA; COLDWELL COMPLEX; DISTRICT OF THUNDER BAY; GEOLOGY; MAP; ONTARIO; PORT COLDWELL; SUPERIOR PROVINCE; THUNDER BAY;

---, 1970, The Port Coldwell Alkaline Complex: 16th Annual Institute on Lake Superior Geology, Thunder Bay, ONT, v. 16, p. 85-100. ALKALIC COMPLEX; ALKALINE; ALKALINE INTRUSION; CANADA; COLDWELL COMPLEX; DISTRICT OF THUNDER BAY; GEOLOGY; GUIDEBOOK; ONTARIO; PORT COLDWELL; PROTEROZOIC;

Pye, E. G., 1953, A petrographic study of textures of basic and ultrabasic igneous rocks [Ph.D. Dissertation]: University of Toronto, Ontario, Canada, 93 p. ANIMIKIE; CANADA; DIABASE; DISTRICT OF THUNDER BAY; LOGAN SILLS; LOWER-PROTEROZOIC; MAFIC; ONTARIO; PETROGRAPHY; ROVE FORMATION; SILLS; ULTRAMAFIC;

---, 1964, A preliminary study of the shapes of plagioclase feldspars in some basic rocks: Proceedings of the Geological Association of Canada, v. 15, pt. 2, p. 9-25. ANORTHOSITE; ARCHEAN; CANADA; COMPOSITION; DIABASE; DISTRICT OF THUNDER BAY; FELDSPARS; LOGAN SILLS; MAFIC; MINERALOGY; MONTANA; ONTARIO; SILLS; STILLWATER COMPLEX; UNITED-STATES;

---, 1966, Geology and mineral deposits of the Manitouwadge Lake area: 12th Annual Institute on Lake Superior Geology, Sault Ste. Marie, MI, v. 12, Guidebook, 19 p. AGAM LAKE FAULT; AGE DATING; ARCHEAN; CANADA; CHALCOPYRITE; COPPER; DIABASE; DIKES; FAULTS; FOLDING; FOX CREEK FAULT; GALENA; GECO MINE; GEOCHRONOLOGY; GREENSTONE BELTS; LEAD-LEAD; MANITOUWADGE LAKE; METASEDIMENTARY-ROCKS; METASEDIMENTS; METAVOLCANICS; ONTARIO; ORE DEPOSITION; ORE- DEPOSITS; PARAGENESIS; PYRITE; PYRRHOTITE; REPLACEMENT; SEDIMENTARY-ROCKS; SILVER; SPHALERITE; STRUCTURAL- GEOLOGY; SULFIDES; VMS; VOLCANIC ROCKS; VOLCANOGENIC MASSIVE SULFIDES; ZINC;

---, 1969, Geology and scenery, North Shore of Lake Superior:, Ontario Department of Mines, Geology Guide Book No. 2, 144 p. ARCHEAN; CANADA; DISTRICT OF THUNDER BAY; GEOLOGY; GUIDEBOOK; ONTARIO; PROTEROZOIC;

Pye, E. G., and Fenwick, K. G., 1963, Lakehead-Shebandowan sheet, District of Thunder Bay: Ontario Department of Mines, Geological Compilation Series, Map P177, scale 1 inch = 2 miles. ANIMIKIE; CANADA; CRYSTAL LAKE INTRUSION; DIABASE; DISTRICT OF THUNDER BAY; GEOLOGY; LOWER-PROTEROZOIC; MAP; ONTARIO; PARDEE TOWNSHIP; PIGEON RIVER DIKES; PINE RIVER-MOUNT MOLLIE INTRUSION; ROVE FORMATION;

---, 1965, Atikokan-Lakehead sheet, Kenora, Rainy River and Thunder Bay districts: Ontario Department of Mines, Geological Compilation Series, Map 2065, scale 1 inch = 4 miles. ANIMIKIE; ARCHEAN; CANADA; CRYSTAL LAKE INTRUSION; DIABASE; DISTRICT OF KENORA; DISTRICT OF RAINY RIVER; DISTRICT OF THUNDER BAY; GEOLOGY; GREENSTONE BELTS; LOWER-PROTEROZOIC; MAP; ONTARIO; PARDEE TOWNSHIP; PIGEON RIVER DIKES; PINE RIVER-MOUNT MOLLIE INTRUSION; ROVE FORMATION;

Raasch, G. O., 1950, Current evaluation of the Cambrian-Keweenawan boundary [Wis.]: Illinois Academy of Science Transactions, v. 43, p. 137-150. AGE; BAYFIELD-GROUP; CAMBRIAN; CAMBRIAN PRECAMBRIAN BOUNDARY; CAMBRIAN-BOUNDARY; HISTORICAL-GEOLOGY; PALEOZOIC; PHANEROZOIC; SEDIMENTARY-ROCKS; SEDIMENTS; UNITED-STATES; WISCONSIN;

Rakestraw, L., 1965, Historic mining on Isle Royale: Houghton, MI, Natural History Association, COPPER; ISLE ROYALE; KEWEENAW COUNTY; MICHIGAN; MINERALIZATION; MINING; PROTEROZOIC;

Ramsay, R. H., 1953, White Pine copper: Engineering and Mining Journal, v. 154, p. 72-87. COPPER; MICHIGAN; MICHIGAN COPPER DISTRICT; NATIVE COPPER; NONESUCH SHALE; ONTONAGON-COUNTY; ORONTO-GROUP; UNITED-STATES; UPPER-PENINSULA; WHITE PINE MINE;

Rand, J. R., 1956, Copper mineralization at the White Pine mine, Ontonagon County, Michigan [abs.]: 2nd Annual Institute on Lake Superior Geology, Houghton, MI, v. 2, p. 17. BORNITE; CHALCOCITE; CHALCOPYRITE; COPPER; MICHIGAN; MICHIGAN COPPER DISTRICT; MINE; MINERALIZATION; MINERALOGY; NATIVE COPPER; NATIVE-SILVER; NONESUCH SHALE; ONTONAGON-COUNTY; ORIGIN; ORONTO-GROUP; OXIDATION; PORTAGE LAKE VOLCANICS; PYRITE; SULFIDES; UNITED-STATES; UPPER-PENINSULA; WEATHERING; WHITE PINE MINE;

138 ---, 1963, Vein-wall rock relationships, White Pine Mine: Economic Geology, v. 59, p. 160-161. COPPER; MICHIGAN; MICHIGAN COPPER DISTRICT; MINE; NONESUCH SHALE; ONTONAGON-COUNTY; ORONTO-GROUP; UNITED-STATES; UPPER-PENINSULA; VEINS; WALLROCK; WHITE PINE MINE;

Ranta, R. A., 1939, Contact effects of basic magmas on rhyolite [P. Eng. Thesis]: University of Minnesota, Minneapolis, 47 p. CONTACT METAMORPHISM; DULUTH COMPLEX; FELSIC; LAYERED INTRUSION; MAFIC; MAGMA; METAMORPHISM; MINNESOTA; NORTH SHORE VOLCANIC GROUP; RHYOLITES; UNITED-STATES; VOLCANIC ROCKS;

Rao, B. V., 1981, Petrogenesis of sulfides in the Dunka Road Cu-Ni deposit, Duluth Complex, Minnesota, with special reference to the role of contamination by county rock [Ph.D. Dissertation]: Indiana University, Bloomington, 372 p. ANIMIKIE; ANIMIKIE GROUP; CONTAMINATION; COPPER; COUNTRY ROCK; DULUTH COMPLEX; DUNKA ROAD; LAYERED INTRUSION; LOWER-PROTEROZOIC; MINERAL DEPOSIT; MINERALIZATION; MINNESOTA; NICKEL; ORE DEPOSIT; ORIGIN; PARTRIDGE RIVER INTRUSION; PARTRIDGE RIVER TROCTOLITE SERIES; SEDIMENTARY-ROCKS; ST. LOUIS COUNTY; SULFIDE; SULFIDES; UNITED-STATES; VIRGINIA FORMATION; 26082; 26056; 26081; DRILL HOLES;

Rao, B. V., and Ripley, E. M., 1979, The relevance of H2O in the generation of Cu-Ni sulfides in the Dunka Road deposit, Duluth Complex, Minnesota [abs.]: Geological Society of America Abstracts with Programs, v. 11, no. 5, p. 254. COPPER; DULUTH COMPLEX; DUNKA ROAD; GENESIS; LAYERED INTRUSION; MINERAL DEPOSIT; MINERALIZATION; MINNESOTA; NICKEL; ORE DEPOSIT; ORE GENESIS; PARTRIDGE RIVER INTRUSION; PARTRIDGE RIVER TROCTOLITE SERIES; ST. LOUIS COUNTY; SULFIDE; SULFIDES; UNITED-STATES; WATER;

---, 1980, Bulk rock and mineral chemistry as an aid in evaluating the role of country rock assimilation in sulfide formation, Dunka Road Cu-Ni deposit, Duluth Complex, Minnesota [abs.]: Geological Society of America Abstracts with Programs, v. 12, p. 506. ANIMIKIE; ANIMIKIE GROUP; ASSIMILATION; COPPER; DULUTH COMPLEX; DUNKA ROAD; GENESIS; GEOCHEMISTRY; LAYERED INTRUSION; LOWER- PROTEROZOIC; MINERAL CHEMISTRY; MINERAL DEPOSIT; MINERALIZATION; MINNESOTA; NICKEL; ORE DEPOSIT; PARTRIDGE RIVER INTRUSION; PARTRIDGE RIVER TROCTOLITE SERIES; SEDIMENTARY-ROCKS; ST. LOUIS COUNTY; SULFIDE; SULFIDES; UNITED-STATES; VIRGINIA FORMATION;

---, 1983, Petrochemical studies of the Dunka Road Cu-Ni deposit, Duluth Complex, Minnesota: Economic Geology, v. 78, p. 1222-1238. COPPER; DULUTH COMPLEX; DUNKA ROAD; GEOCHEMISTRY; LAYERED INTRUSION; MINERAL DEPOSIT; MINERALIZATION; MINNESOTA; NICKEL; ORE DEPOSIT; PARTRIDGE RIVER INTRUSION; PARTRIDGE RIVER TROCTOLITE SERIES; PETROCHEMISTRY; PETROLOGY; ST. LOUIS COUNTY; SULFIDE; SULFIDES; UNITED-STATES;

Reed, R. C., 1967, Copper mineralization in Animikie sediments of the eastern Marquette Range, Michigan [abs.]: 13th Annual Institute on Lake Superior Geology, East Lansing, MI, v. 13, p. 34-35. BORNITE; CHALCOCITE; CHALCOPYRITE; COPPER; HEMATITE; KONA FORMATION; LOWER-PROTEROZOIC; MARQUETTE RANGE SUPERGROUP; MICHIGAN; MINERALIZATION; NATIVE COPPER; PYRITE; SULFIDES; UNITED-STATES; UPPER-PENINSULA; VEINS;

---, 1987, Porcupine Mountains Wilderness State Park, Michigan, in Biggs, D. L., ed., Centennial Field Guide: Boulder, CO, Geological Society of America, North-Central Section, v. 3, p. 269-272. ALDRIGE CREEK QUADRANGLE; BERGLAND NE QUADRANGLE; CARP RIVER; CARP RIVER QUADRANGLE; COPPER; COPPER HARBOR CONGLOMERATE; FREDA-SANDSTONE; GEOLOGY; GOGEBIC-COUNTY; GOVERNMENT PEAK QUADRANGLE; GUIDEBOOK; MICHIGAN; MICHIGAN COPPER DISTRICT; MINING; NATIVE COPPER; NONESUCH SHALE; OAK BLUFF FORMATION; ONTONAGON-COUNTY; ORONTO-GROUP; PORCUPINE MOUNTAINS; PORCUPINE MOUNTAINS WILDERNESS STATE PARK; SEDIMENTARY-ROCKS; SULFIDES; TIEBEL CREEK QUADRANGLE; UNITED-STATES; UNNAMED-FORMATION; UPPER-PENINSULA; VOLCANIC ROCKS; WHITE PINE MINE; WHITE PINE QUADRANGLE;

Reeve, E. J., 1969, Petrology and mineralogy of a gabbroic intrusion in Pardee Township near Port Arthur, Ontario [M.S. Thesis]: University of Wisconsin, Milwaukee, 79 p. ANIMIKIE; CANADA; COPPER; CRYSTAL LAKE INTRUSION; DISTRICT OF THUNDER BAY; LOWER- PROTEROZOIC; MINERAL CHEMISTRY; MINERALOGY; MINNESOTA; NICKEL; ONTARIO; PARDEE TOWNSHIP; PETROLOGY; PORT ARTHUR; ROVE FORMATION; SULFIDES; UNITED-STATES;

Reich, L., 1989, Geomagnetic model of the St. Croix Horst in Polk County, Wisconsin [M.S. Thesis]: University of Wisconsin, Milwaukee, 141 p. BEDROCK; GEOPHYSICS; GROUND MAGNETIC SURVEY; MAGNETIC-SURVEYS; MAGNETICS; MODEL; MODELLING; POLK- COUNTY; SAINT CROIX HORST; TOPOGRAPHY; UNITED-STATES; WISCONSIN;

Reichhoff, J. A., 1987, Geochemical modeling and flow direction of Keweenawan dikes, Duluth, Minnesota [M.S. Thesis]: University of Minnesota, Duluth, 168 p. BASE METAL ANALYSES; CARLTON COUNTY; CARLTON COUNTY DIKES; CLOQUET QUADRANGLE; CRYSTALLIZATION; DIKE; DULUTH; DULUTH DIKE SWARM; DULUTH HEIGHTS QUADRANGLE; DULUTH QUADRANGLE; ESKO QUADRANGLE; FRACTIONAL CRYSTALLIZATION; FRACTIONATION; GEOCHEMISTRY; GEOPHYSICS; LAKEWOOD QUADRANGLE; MAGMA MIXING; MAGNETIC-SURVEYS; MAGNETICS; MAJOR ELEMENT ANALYSES; MINNESOTA; MINOR ELEMENT ANALYSES; MODELLING; NORMAL POLARITY; ORIGIN; PETROGRAPHY; RARE-EARTH ELEMENTS; REE; REVERSE POLARITY; ST. LOUIS COUNTY; TRACE ELEMENT ANALYSES; UNITED-STATES; WEST DULUTH QUADRANGLE; WHOLE ROCK ANALYSES;

Rempel, G. G., 1994, Regional geophysics at Noril'sk, in Lightfoot, P. C., and Naldrett, A. J., eds., Proceedings of the Sudbury-Noril'sk Symposium:, Ontario Geological Survey, Special Volume 5, p. 147-160. AEROMAGNETICS; ASIA; COPPER; GEOPHYSICS; GRAVITY; MESOZOIC; MODELLING; NICKEL; NORIL'SK; NORIL'SK-KHARAYELAKHSKY FAULT; ORE-DEPOSITS; PHANEROZOIC; PROSPECTING; RUSSIA; SEISMIC; SIBERIA; SIBERIAN PLATFORM; SIBERIAN TRAPS; STRUCTURAL-GEOLOGY; SULFIDES; TRIASSIC; VOLCANIC ROCKS; WEST SIBERIAN PLATFORM; YENISEI-KHATANGSKY TROUGH;

139 Renner, J. L., 1969, The petrology of the contact rocks of the Duluth Complex, Dunka River area, Minnesota [M.S. Thesis]: University of Minnesota, Minneapolis, 81 p. CONTACT METAMORPHISM; DULUTH COMPLEX; DUNKA RIVER; LAYERED INTRUSION; METAMORPHISM; MINNESOTA; PETROLOGY; UNITED-STATES;

Reno, H. T., 1970, Nickel in U.S, in Mineral Facts and Problems:, U. S. Bureau of Mines, Bulletin 650, p. 347-360. AVAILABILITY; DULUTH COMPLEX; ECONOMICS; ENVIRONMENT; ENVIRONMENTAL; MINERAL-RESOURCES; MINING; MINNESOTA; NICKEL; ORE RESERVES; PRODUCTION; PUERTO RICO; SULFIDES; UNITED-STATES;

Repasky, T. R., 1984, Magnetotelluric profile of the Jacobsville Sandstone [abs.]: 13th Annual Institute on Lake Superior Geology, Wausau, WI, v. 13, p. 56-57. CLASTIC-ROCKS; ELECTRICAL-LOGGING; FREDA-SANDSTONE; GEOPHYSICAL-PROFILES; GEOPHYSICAL-SURVEYS; GEOPHYSICS; HOUGHTON-COUNTY; JACOBSVILLE-SANDSTONE; KEWEENAW-BAY; LOWER-PROTEROZOIC; MAGNETOTELLURIC; MAGNETOTELLURIC-SURVEYS; MICHIGAMME-SLATE; MICHIGAN; ORONTO-GROUP; PORTAGE LAKE VOLCANICS; RESISTIVITY; SANDSTONE; SEDIMENTARY-ROCKS; SEDIMENTS; UNITED-STATES; UPPER-PENINSULA; WELL- LOGGING;

---, 1984, Magnetotelluric profile of the Jacobsville Sandstone [M.S. Thesis]: Michigan Technological University, Houghton, 132 p. ANTICLINES; BARAGA COUNTY; BASEMENT; FOLDS; GEOPHYSICAL-SURVEYS; GEOPHYSICS; GLOBE-MINE; JACOBSVILLE-SANDSTONE; KEWEENAW; KEWEENAW-VOLCANICS; MAGNETOTELLURIC-SURVEYS; MICHIGAMME-SLATE; MICHIGAN; SANDSTONE; SEDIMENTARY-ROCKS; SEDIMENTS; STRUCTURAL-GEOLOGY; STYLE; UNITED-STATES;

Reynolds, D. J., Coakley, B. J., and Wang, H. F., 1992, Structural evolution of Lake Superior; II, Eastern basin [abs.]: Geological Society of America Abstracts with Programs, v. 24, no. 7, p. 190-191. AEROMAGNETICS; BASEMENT; COMPRESSION-TECTONICS; CRUSTAL-SHORTENING; DEFORMATION; EVOLUTION; FAULTS; FOLDS; GEOPHYSICS; GRAVITY; GRAVITY-SURVEYS; JACOBSVILLE-SANDSTONE; KEWEENAW FAULT; LAKE SUPERIOR; MAGNETIC-SURVEYS; MANITOU-ISLAND; ORONTO-GROUP; REACTIVATION; REVERSE- FAULTS; SANDSTONE; SEDIMENTARY-ROCKS; SEDIMENTS; SEISMIC; SEISMIC-SURVEYS; TECTONICS;

Richards, J. P., 1985, A fluid inclusion and stable isotope study of Keweenawan fissure-vein hosted copper sulfide mineralization, Mamainse Point, Ontario [M.S. Thesis]: University of Toronto, Ontario, Canada, 290 p. CANADA; COPPER; DISTRICT OF ALGOMA; FISSURE VEIN; FLUID INCLUSIONS; MAMAINSE POINT; MINERALIZATION; ONTARIO; STABLE-ISOTOPES; SULFIDE; SULFIDES;

Richards, J. P., and Spooner, E. T. C., 1986, Evidence for a magmatic fluid association in Keweenawan Cu-sulfide fissure-vein deposits at Mamainse Point, Ontario: Possible relationships to stratabound basalt-hosted native copper [abs.]: The Canadian Mineralogist, v. 24, p. 202. BASALT; CANADA; COPPER; DISTRICT OF ALGOMA; FISSURE VEIN; MAMAINSE POINT; NATIVE COPPER; ONTARIO; STRATABOUND; SULFIDE; SULFIDES; VOLCANIC;

---, 1986, Native copper deposition by mixing of high temperature, high salinity fluids of possible magmatic association, with cool dilute groundwaters, Keweenaw Peninsula, Michigan [abs.]: Geological Society of America Abstracts with Programs, v. 18, p. 730. COPPER; DEPOSITION; GROUNDWATER; KEWEENAW PENINSULA; MAGMATIC FLUIDS; MICHIGAN; MICHIGAN COPPER DISTRICT; MIXING; NATIVE COPPER; ORIGIN; SALINITY; TEMPERATURE; UNITED-STATES; UPPER-PENINSULA;

---, 1989, Evidence for Cu-(Ag) mineralization by magmatic-meteoric fluid mixing in Keweenawan fissure veins, Mamainse Point, Ontario: Economic Geology, v. 84, p. 360-385. CANADA; COPPER; DISTRICT OF ALGOMA; FISSURE VEIN; FLUIDS; MAGMATIC; MAMAINSE POINT; METEORIC; MINERALIZATION; MIXING; ONTARIO; SILVER;

Richgels, H. J., 1960, Geophysical reconnaissance in the Wisconsin part of the Lake Superior geosyncline [B.A Thesis]: University of Wisconsin, Madison, 44 p. GEOPHYSICS; LAKE SUPERIOR; ORONTO-GROUP; REFRACTION; SANDSTONE; SEDIMENTARY-ROCKS; SEISMIC; SEISMIC-SURVEYS; UNITED-STATES; VELOCITY; WISCONSIN;

Ripley, E. M., 1978, Sulfur isotopes of the Duluth Complex [abs.]: Geological Society of America Abstracts with Programs, v. 10, p. 479. COPPER; DULUTH COMPLEX; LAYERED INTRUSION; MINNESOTA; NICKEL; ST. LOUIS COUNTY; STABLE-ISOTOPES; SULFIDE; SULFIDES; SULFUR ISOTOPES; UNITED-STATES;

---, 1978, Sulfur isotopic studies of the Dunka Road Cu-Ni deposit, Duluth Complex, Minnesota [abs.]: Economic Geology, v. 73, p. 1396-1397. AMPHIBOLE; ANIMIKIE; ANIMIKIE GROUP; BIOTITE; BORNITE; CHALCOPYRITE; COPPER; CUBANITE; DULUTH COMPLEX; DUNKA ROAD; HYDROTHERMAL; LAYERED INTRUSION; LOWER-PROTEROZOIC; MINERAL DEPOSIT; MINERALIZATION; MINNESOTA; NICKEL; ORE DEPOSIT; PARTRIDGE RIVER INTRUSION; PARTRIDGE RIVER TROCTOLITE SERIES; PENTLANDITE; PYRRHOTITE; SEDIMENTARY-ROCKS; ST. LOUIS COUNTY; STABLE-ISOTOPES; SULFIDE; SULFIDES; SULFUR ISOTOPES; UNITED- STATES; VIRGINIA FORMATION;

---, 1981, Sulfur isotopic studies of the Dunka Road Cu-Ni deposit, Duluth Complex, Minnesota: Economic Geology, v. 76, p. 610-620. COPPER; DULUTH COMPLEX; DUNKA ROAD; LAYERED INTRUSION; MINERAL DEPOSIT; MINERALIZATION; MINNESOTA; NICKEL; ORE DEPOSIT; PARTRIDGE RIVER INTRUSION; PARTRIDGE RIVER TROCTOLITE SERIES; ST. LOUIS COUNTY; STABLE-ISOTOPES; SULFIDE; SULFIDES; SULFUR ISOTOPES; UNITED-STATES;

---, 1982, Sulfur isotopic studies of the Minnamax Cu-Ni deposit, Duluth Complex, Minnesota [abs.]: Geological Society of America Abstracts with Programs, v. 14, p. 600. BABBITT; COPPER; DULUTH COMPLEX; LAYERED INTRUSION; LOCAL BOY; MINERAL DEPOSIT; MINERALIZATION; MINNAMAX; MINNESOTA; NICKEL; ORE DEPOSIT; PARTRIDGE RIVER INTRUSION; ST. LOUIS COUNTY; STABLE-ISOTOPES; SULFIDE; SULFIDES; SULFUR ISOTOPES; UNITED-STATES;

140 ---, 1986, Application of stable isotope studies to problems of magmatic sulfide ore genesis, with special reference to the Duluth Complex, Minnesota, in Freidrich, G. H., Genkin, A. D., Naldrett, A. J., Ridge, J. D., Sillitoe, R. H., and Vokes, F. M., eds., Geology and metallogeny of copper deposits: Berlin, Springer-Verlag, p. 25-42. COPPER; DULUTH COMPLEX; LAYERED INTRUSION; MAGMATIC; MINNESOTA; NICKEL; ORE GENESIS; ST. LOUIS COUNTY; STABLE-ISOTOPES; SULFIDE; SULFIDES; UNITED-STATES;

---, 1986, Genesis of Cu-Ni sulfide mineralization in the Duluth Complex: A review, in Augustithis, S. S., ed., Metallogeny of basic and ultrabasic rocks (regional presentations): Athens, Greece, Theophrastus Publications, p. 391-416. COPPER; DULUTH COMPLEX; GENESIS; LAYERED INTRUSION; MAFIC; MINERALIZATION; MINNESOTA; NICKEL; ORE DEPOSIT; ORE GENESIS; ST. LOUIS COUNTY; STABLE- ISOTOPES; SULFIDE; SULFIDES; SULFUR ISOTOPES; ULTRAMAFIC; UNITED-STATES;

---, 1986, Origin and concentration mechanisms of copper and nickel in Duluth Complex sulfide zones--a dilemma: Economic Geology, v. 81, p. 974- 978. CONCENTRATION; COPPER; DULUTH COMPLEX; GENESIS; LAYERED INTRUSION; MINNESOTA; NICKEL; ORE GENESIS; ORIGIN; ST. LOUIS COUNTY; SULFIDE; SULFIDES; UNITED-STATES;

---, 1989, Mineralogic and isotopic studies of platinum-group element mineralization at the Babbitt Cu-Ni deposit, Duluth Complex, Minnesota [abs.]: Geological Society of Finland Bulletin, v. 61, p. 8. BABBITT; COPPER; DULUTH COMPLEX; LAYERED INTRUSION; LOCAL BOY; MINERAL DEPOSIT; MINERALIZATION; MINERALOGY; MINNAMAX; MINNESOTA; NICKEL; ORE DEPOSIT; PARTRIDGE RIVER INTRUSION; PGE; PLATINUM-GROUP ELEMENTS; ST. LOUIS COUNTY; STABLE-ISOTOPES; SULFIDE; SULFIDES; UNITED-STATES;

---, 1990, Platinum group element geochemistry of Cu-Ni mineralization in the basal zone of the Babbitt deposit, Duluth Complex, Minnesota: Economic Geology, v. 85, p. 830-841. BABBITT; COPPER; DULUTH COMPLEX; GEOCHEMISTRY; LAYERED INTRUSION; LOCAL BOY; MINERAL DEPOSIT; MINERALIZATION; MINNAMAX; MINNESOTA; NICKEL; ORE DEPOSIT; PARTRIDGE RIVER INTRUSION; PGE; PLATINUM-GROUP ELEMENTS; ST. LOUIS COUNTY; SULFIDE; SULFIDES; UNITED-STATES;

---, 1990, Se/S ratios of country rocks and sulfide mineralization of the Duluth Complex, MN.: Further evidence for distal external sulfur addition [abs.]: Geological Society of America Abstracts with Programs, v. 22, no. 7, p. A182. ANIMIKIE; ANIMIKIE GROUP; DULUTH COMPLEX; LAYERED INTRUSION; LOWER-PROTEROZOIC; MINERALIZATION; MINNESOTA; SE/S; SEDIMENTARY-ROCKS; SELENIUM; ST. LOUIS COUNTY; SULFIDE; SULFIDES; SULFUR; UNITED-STATES; VIRGINIA FORMATION;

---, 1990, Se/S ratios of the Virginia Formation and Cu-Ni sulfide mineralization in the Babbitt area, Duluth Complex, Minnesota: Economic Geology, v. 85, p. 1935-1940. ANIMIKIE; ANIMIKIE GROUP; BABBITT; COPPER; DULUTH COMPLEX; GEOCHEMISTRY; LAYERED INTRUSION; LOCAL BOY; LOWER-PROTEROZOIC; MINERAL DEPOSIT; MINERALIZATION; MINNAMAX; MINNESOTA; NICKEL; ORE DEPOSIT; PARTRIDGE RIVER INTRUSION; SE/S; SEDIMENTARY-ROCKS; SELENIUM; ST. LOUIS COUNTY; SULFIDE; SULFIDES; SULFUR; UNITED-STATES; VIRGINIA FORMATION;

---, 1991, Platinum group element geochemistry of Cu-Ni mineralization in the basal zone of the Babbitt deposit, Duluth Complex, Minnesota - A reply: Economic Geology, v. 86, p. 1358-1362. BABBITT; COPPER; DULUTH COMPLEX; GEOCHEMISTRY; LAYERED INTRUSION; LOCAL BOY; MINERAL DEPOSIT; MINERALIZATION; MINNAMAX; MINNESOTA; NICKEL; ORE DEPOSIT; PARTRIDGE RIVER INTRUSION; PGE; PLATINUM-GROUP ELEMENTS; ST. LOUIS COUNTY; SULFIDE; SULFIDES; UNITED-STATES;

---, 1994, A comparison of apatite-bearing Cu-Ni sulfide mineralization and transgressive apatite-oxide rocks: A possible link between Duluth Complex magmatism and massif-type anorthosites: Geological Society of America Abstracts with Programs, v. 26, no. 7, p. A-312. ANORTHOSITE; APATITE; BABBITT; CHLORAPATITE; CHLORINE; COPPER; DULUTH COMPLEX; FLUORINE; HERCYNITE; ILMENITE; IMMISCIBILITY; IRON; LAYERED INTRUSION; MAGMATISM; MASSIF ANORTHOSITES; MASSIF-TYPE; MASSIVE SULFIDE ORE; MINERAL DEPOSIT; MINERALIZATION; MINNAMAX; MINNESOTA; NELSONITE; NICKEL; OUIS; OXIDE-BEARING ULTRAMAFIC INTRUSION; PARTRIDGE RIVER INTRUSION; PHOSPHORUS; SPINEL; ST. LOUIS COUNTY; STABLE-ISOTOPES; SULFUR ISOTOPES; TITANIUM; UNITED-STATES;

Ripley, E. M., and Alawi, J. A., 1986, Sulfide mineralogy and chemical evolution of the Babbitt Cu-Ni deposit, Duluth Complex, Minnesota: The Canadian Mineralogist, v. 24, p. 347-368. ANIMIKIE; ANIMIKIE GROUP; BABBITT; COPPER; DEVOLATILIZATION; DULUTH COMPLEX; FRACTIONAL CRYSTALLIZATION; GEOCHEMISTRY; IMMISCIBLE SULFIDE; LAYERED INTRUSION; LOCAL BOY; LOWER- PROTEROZOIC; MINERAL CHEMISTRY; MINERAL DEPOSIT; MINERALIZATION; MINERALOGY; MINNAMAX; MINNESOTA; NICKEL; ORE DEPOSIT; PARTRIDGE RIVER; PARTRIDGE RIVER INTRUSION; PETROLOGY; SEDIMENTARY-ROCKS; ST. LOUIS COUNTY; SULFIDE; SULFIDES; UNITED-STATES; VIRGINIA FORMATION;

---, 1988, Petrogenesis of pelitic xenoliths at the Babbitt Cu-Ni deposit, Duluth Complex, Minnesota: Lithos, v. 21, p. 143-159. ANIMIKIE; ANIMIKIE GROUP; BABBITT; COPPER; DULUTH COMPLEX; LAYERED INTRUSION; LOWER-PROTEROZOIC; MINERAL DEPOSIT; MINERALIZATION; MINNAMAX; MINNESOTA; NICKEL; ORE DEPOSIT; PARTRIDGE RIVER INTRUSION; PELITIC; PETROGENESIS; SEDIMENTARY-ROCKS; ST. LOUIS COUNTY; SULFIDE; SULFIDES; UNITED-STATES; VIRGINIA FORMATION; XENOLITHS;

Ripley, E. M., and Al-Jassar, T. J., 1983, Oxygen isotopic studies of the Babbitt Cu-Ni prospect, Duluth Complex, Minnesota [abs.]: Geological Society of America Abstracts with Programs, v. 15, no. 6, p. 671. ANIMIKIE; ANIMIKIE GROUP; BABBITT; COPPER; DULUTH COMPLEX; LAYERED INTRUSION; LOCAL BOY; LOWER-PROTEROZOIC; MINERAL DEPOSIT; MINERALIZATION; MINNAMAX; MINNESOTA; NICKEL; ORE DEPOSIT; OXYGEN ISOTOPES; PARTRIDGE RIVER INTRUSION; SEDIMENTARY-ROCKS; ST. LOUIS COUNTY; STABLE- ISOTOPES; SULFIDE; SULFIDES; UNITED-STATES; VIRGINIA FORMATION;

---, 1987, Sulfur and oxygen isotope studies of melt-country rock interaction, Babbitt Cu-Ni deposit, Duluth Complex, Minnesota: Economic Geology, v. 82, p. 87-107. 10030; 10031; 10039; 10040; 10052; 10053; 10060; 10061; 10063; 10065; 10066; 10069; 10111; 10112; 10119; 10120; 10121; 10123; 10134; 10135; 10172; 10195; 10211; 10216; 24987; A DRIFT; ANIMIKIE; ANIMIKIE GROUP; ASSIMILATION; B1-132; B1-142; B1-377; BABBITT; BORNITE; CHALCOPYRITE; CONTACT METAMORPHISM; COPPER; CUBANITE; DRIFT B; DRIFT C; DRILL HOLE; DULUTH

141 COMPLEX; HORNFELS; LAYERED INTRUSION; LOCAL BOY; LOWER-PROTEROZOIC; METAMORPHISM; MINERAL DEPOSIT; MINERALIZATION; MINNAMAX; MINNESOTA; NICKEL; ORE DEPOSIT; OXYGEN ISOTOPES; PARTRIDGE RIVER INTRUSION; PYRITE; PYRRHOTITE; SEDIMENTARY-ROCKS; ST. LOUIS COUNTY; STABLE-ISOTOPES; SULFIDE; SULFIDES; SULFUR ISOTOPES; TIGER BOY; UNITED-STATES; VIRGINIA FORMATION;

Ripley, E. M., and Andrews, M. S., 1985, Devolatilization equilibria in the genesis of the Dunka Road Cu-Ni deposit [abs.]: Geological Society of America Abstracts with Programs, v. 17, no. 7, p. 700. ANIMIKIE; ANIMIKIE GROUP; CONTACT AUREOLE; CONTACT METAMORPHISM; COPPER; DEVOLATILIZATION; DULUTH COMPLEX; DUNKA ROAD; GENESIS; LAYERED INTRUSION; LOWER-PROTEROZOIC; METAMORPHISM; MINERAL DEPOSIT; MINERALIZATION; MINNESOTA; NICKEL; ORE DEPOSIT; ORE GENESIS; PARTRIDGE RIVER INTRUSION; PARTRIDGE RIVER TROCTOLITE SERIES; SEDIMENTARY-ROCKS; ST. LOUIS COUNTY; SULFIDE; SULFIDES; UNITED- STATES; VIRGINIA FORMATION;

Ripley, E. M., and Butler, B. K., 1991, Hydrogen isotopic evidence for the source of water involved in serpentinization and Pt-Pd-Au remobilization, Babbitt deposit, Duluth Complex, MN [abs.]: Geological Association of Canada/Mineralogical Association of Canada Program with Abstracts, v. 16, p. A105. ALTERATION; BABBITT; COPPER; DULUTH COMPLEX; GOLD; HYDROGEN ISOTOPES; HYDROTHERMAL; LAYERED INTRUSION; MINERAL DEPOSIT; MINERALIZATION; MINNAMAX; MINNESOTA; NICKEL; ORE DEPOSIT; PALLADIUM; PARTRIDGE RIVER INTRUSION; PGE; PLATINUM; PLATINUM-GROUP ELEMENTS; REMOBILIZATION; SERPENTINIZATION; ST. LOUIS COUNTY; STABLE-ISOTOPES; SULFIDE; SULFIDES; UNITED-STATES; WATER;

Ripley, E. M., Butler, B. K., and Taib, N. I., 1992, Effects of devolatilization on the hydrogen isotopic composition of pelitic rocks in the contact aureole of the Duluth Complex, northeastern Minnesota, U.S.A: Chemical Geology, v. 102, p. 185-197. ANIMIKIE; ANIMIKIE GROUP; CONTACT AUREOLE; CONTACT METAMORPHISM; DEVOLATILIZATION; DULUTH COMPLEX; GEOCHEMISTRY; HYDROGEN ISOTOPES; LAYERED INTRUSION; LOWER-PROTEROZOIC; METAMORPHISM; MINNESOTA; PELITE; PELITIC; SEDIMENTARY- ROCKS; ST. LOUIS COUNTY; STABLE-ISOTOPES; UNITED-STATES; VIRGINIA FORMATION;

Ripley, E. M., Butler, B. K., Taib, N. I., and Lee, I. S., 1993, Hydrothermal alteration in the Babbitt Cu-Ni deposit, Duluth Complex: Mineralogy and hydrogen isotope systematics: Economic Geology, v. 88, p. 679-696. ALTERATION; ANIMIKIE; ANIMIKIE GROUP; BABBITT; COPPER; DEVOLATILIZATION; DULUTH COMPLEX; HYDROGEN; HYDROTHERMAL; LAYERED INTRUSION; LOWER-PROTEROZOIC; MINERAL DEPOSIT; MINERALIZATION; MINERALOGY; MINNAMAX; MINNESOTA; NICKEL; ORE DEPOSIT; OXYGEN ISOTOPES; PARTRIDGE RIVER INTRUSION; PGE; SEDIMENTARY-ROCKS; SERPENTINE; ST. LOUIS COUNTY; STABLE-ISOTOPES; SULFIDE; SULFIDES; UNITED-STATES; VIRGINIA FORMATION;

Ripley, E. M., and Chryssoulis, S. L., 1992, Ion probe microanalysis of sulfide and arsenide minerals from the Babbitt Cu-Ni deposit, Duluth Complex, MN [abs.]: Geological Society of America Abstracts with Programs, v. 24, p. A61. ANALYTICAL TECHNIQUES; ARSENIDES; BABBITT; COPPER; DULUTH COMPLEX; ION PROBE; LAYERED INTRUSION; LOCAL BOY; MINERAL CHEMISTRY; MINERAL DEPOSIT; MINERALIZATION; MINNAMAX; MINNESOTA; NICKEL; ORE DEPOSIT; PARTRIDGE RIVER INTRUSION; PGE; PLATINUM-GROUP ELEMENTS; ST. LOUIS COUNTY; SULFIDE; SULFIDES; UNITED-STATES;

---, 1994, Ion microprobe analysis of platinum-group elements in sulfide and arsenide minerals from the Babbitt Cu-Ni deposit, Duluth Complex, Minnesota: Economic Geology, v. 89, p. 201-210. ALLOY; ARSENIC; ARSENIDES; BABBITT; CHALCOPYRITE; COPPER; CUBANITE; DULUTH COMPLEX; GOLD; HYDROTHERMAL; ION MICROPROBE; LAYERED INTRUSION; LOCAL BOY; MACKINAWITE; MAUCHERITE; MINERAL CHEMISTRY; MINERAL DEPOSIT; MINERALIZATION; MINERALOGY; MINNAMAX; MINNESOTA; NICKEL; ORTHOMAGMATIC; PARTRIDGE RIVER INTRUSION; PENTLANDITE; PGE; PLATINUM-GROUP ELEMENTS; PYRRHOTITE; ST. LOUIS COUNTY; SULFIDE; SULFIDES; TIGER BOY; UNITED-STATES;

Ripley, E. M., Grant, N. K., and Chalokwu, C. I., 1984, Isotopic studies of the Babbitt Cu-Ni deposit, Duluth Complex, Minnesota, U.S.A.: The importance of the melt-county rock interaction in sulfide genesis [abs.]: International Geological Congress, 27th, Moscow, Abstracts, v. 6, p. 275-276 ASSIMILATION; BABBITT; COPPER; DULUTH COMPLEX; GENESIS; LAYERED INTRUSION; MINERAL DEPOSIT; MINERALIZATION; MINNAMAX; MINNESOTA; NICKEL; ORE DEPOSIT; ORE GENESIS; PARTRIDGE RIVER INTRUSION; ST. LOUIS COUNTY; STABLE- ISOTOPES; SULFIDE; SULFIDES; UNITED-STATES;

Ripley, E. M., McMahon, B., and Andrews, M., 1987, Distribution of PGE at the Babbitt Cu-Ni deposit, Duluth Complex, Minnesota [abs.]: Geological Society of America Abstracts with Programs, v. 19, no. 4, p. 240. BABBITT; COPPER; DULUTH COMPLEX; LAYERED INTRUSION; MINERAL DEPOSIT; MINERALIZATION; MINNAMAX; MINNESOTA; NICKEL; ORE DEPOSIT; PARTRIDGE RIVER INTRUSION; PGE; PLATINUM-GROUP ELEMENTS; ST. LOUIS COUNTY; SULFIDE; SULFIDES; UNITED-STATES;

Ripley, E. M., and Rao, B. V., 1980, Oxygen isotopic studies of the Dunka Road Cu-Ni deposit, Duluth Complex, Minnesota [abs.]: Geological Society of America Abstracts with Programs, v. 12, p. 510. COPPER; DULUTH COMPLEX; DUNKA ROAD; LAYERED INTRUSION; MINERAL DEPOSIT; MINERALIZATION; MINNESOTA; NICKEL; ORE DEPOSIT; OXYGEN ISOTOPES; PARTRIDGE RIVER INTRUSION; PARTRIDGE RIVER TROCTOLITE SERIES; ST. LOUIS COUNTY; STABLE-ISOTOPES; SULFIDE; SULFIDES; UNITED-STATES;

Ripley, E. M., and Taib, N. I., 1989, Carbon isotopic studies of meta-sedimentary and igneous rocks at the Babbitt Cu-Ni deposit, Duluth Complex, Minnesota, U.S.A: Chemical Geology, v. 73, p. 319-342. ANIMIKIE; ANIMIKIE GROUP; BABBITT; CARBON ISOTOPES; COPPER; DULUTH COMPLEX; LAYERED INTRUSION; LOWER-PROTEROZOIC; MINERAL DEPOSIT; MINERALIZATION; MINNAMAX; MINNESOTA; NICKEL; ORE DEPOSIT; PARTRIDGE RIVER INTRUSION; SEDIMENTARY-ROCKS; ST. LOUIS COUNTY; STABLE-ISOTOPES; SULFIDE; SULFIDES; UNITED-STATES; VIRGINIA FORMATION;

Ripley, E. M., Taib, N. I., and Miller, J. D., Jr., 1988, Oxygen and carbon isotopic investigation of the Duluth Complex, Minnesota [abs.]: Geological Society of America Abstracts with Programs, v. 20, no. 7, p. A306. ANORTHOSITIC SERIES; CARBON ISOTOPES; DULUTH COMPLEX;

142 FRACTIONAL CRYSTALLIZATION; LAYERED INTRUSION; MINNESOTA; OXYGEN ISOTOPES; STABLE-ISOTOPES; TROCTOLITIC SERIES; UNITED-STATES; XENOLITHS;

Ripley, E. M., and Watowich, S. N., 1982, Sulfur isotopic studies of the Minnamax Cu-Ni deposit, Duluth Complex, Minnesota [abs.]: Geological Society of America Abstracts with Programs, v. 14, p. 600. BABBITT; COPPER; DULUTH COMPLEX; LAYERED INTRUSION; LOCAL BOY; MINERAL DEPOSIT; MINERALIZATION; MINNAMAX; MINNESOTA; NICKEL; ORE DEPOSIT; PARTRIDGE RIVER INTRUSION; ST. LOUIS COUNTY; STABLE-ISOTOPES; SULFIDE; SULFIDES; SULFUR ISOTOPES; UNITED-STATES;

Roasch, G. O., 1950, Current evaluation of the Cambrian-Keweenawan boundary: Illinois Academy of Science Transactions, v. 43, p. 137-150. CAMBRIAN; PALEOZOIC; PHANEROZOIC; SEDIMENTARY-ROCKS; UNITED-STATES;

Robertson, J. M., 1972, The geology and mineralogy of some copper sulfide deposits, Keweenaw County, Michigan [Ph.D. Dissertation]: University of Michigan, Ann Arbor, 102 p. COPPER; DIKES; GEOLOGY; KEWEENAW COUNTY; MICHIGAN; MICHIGAN COPPER DISTRICT; MINERALIZATION; MINERALOGY; MOUNT BOHEMIA; ORE-DEPOSITS; SULFIDES; UNITED-STATES; UPPER-PENINSULA;

---, 1975, Geology and mineralogy of some copper sulfide deposits near Mount Bohemia, Keweenaw County, Michigan: Economic Geology, v. 70, p. 1202-1224. BARE HILL RHYOLITE; BASE METAL ANALYSES; BOHEMIA FAULT; BORNITE; CHALCOCITE; CHALCOPYRITE; COPPER; COPPER CITY RHYOLITE; COVELLITE; DIGENITE; DIORITE; DJURLEITE; FAULTS; FLUIDS; FREDA-SANDSTONE; GALENA; GEOCHEMISTRY; GEOLOGY; GRANOPHYRE; GRATIOT LAKE RHYOLITE; GRATIOT MOUNTAIN RHYOLITE; HEMATITE; HYDROTHERMAL; ILMENITE; KEWEENAW COUNTY; KEWEENAW FAULT; LAC LA BELLE FISSURE; MAGNETITE; MIAROLITIC; MICHIGAN; MICHIGAN COPPER DISTRICT; MINERAL DEPOSITS; MINERALIZATION; MINERALOGY; MOUNT BOHEMIA; MT. HOUGHTON RHYOLITE; NATIVE COPPER; ORIGIN; ORONTO-GROUP; PARAGENESIS; PETROLOGY; PYRITE; SANDSTONE; SOLUTIONS; SPHALERITE; STRUCTURAL-GEOLOGY; SUFFOLK RHYOLITE; SULFIDES; UNITED-STATES; UPPER-PENINSULA; ZONING;

---, 1976, Geology and mineralogy of some copper sulfide deposits near Mount Bohemia, Keweenaw County, Michigan [abs.]: 22nd Annual Institute on Lake Superior Geology, St. Paul, MN, v. 22, p. 51. ALTERATION; BOHEMIA FAULT; BORNITE; CHALCOCITE; CHALCOPYRITE; COPPER; DIKES; FAULT; FLUIDS; GEOLOGY; HYDROTHERMAL; KEWEENAW COUNTY; KEWEENAW PENINSULA; MAGMATIC; MICHIGAN; MICHIGAN COPPER DISTRICT; MINERAL DEPOSITS; MINERALIZATION; MINERALOGY; MOUNT BOHEMIA; NATIVE COPPER; PARAGENESIS; PYRITE; REPLACEMENT; SOLUTIONS; STRUCTURAL-GEOLOGY; SULFIDES; UNITED-STATES; UPPER- PENINSULA; ZONATION; ZONING;

Robertson, W. A., 1973, Pole positions from the Mamainse Point lavas and their bearing on a Keweenawan pole path and polarity sequence: Canadian Journal of Earth Sciences, v. 10, p. 1541-1555. BASALT; CANADA; DISTRICT OF ALGOMA; GEOPHYSICS; MAMAINSE POINT FORMATION; ONTARIO; PALEOMAGNETISM; POLAR-WANDERING; POLARITY; VOLCANIC ROCKS;

Robertson, W. A., and Fahrig, W. F., 1971, The great Logan paleomagnetic loop-the polar wandering path from Canadian Shield rocks during the Neohelikian Era: Canadian Journal of Earth Sciences, v. 8, p. 1355-1372. ABITIBI DIKES; AGE DATING; CANADA; CANADIAN SHIELD; DIKES; DISTRICT OF THUNDER BAY; FRANKLIN INTRUSION; GEOCHRONOLOGY; GEOPHYSICS; LOGAN LOOP; LOGAN SILLS; MACKENZIE DYKE SWARM; NORMAL MAGNETIZATION; ONTARIO; PALEOMAGNETISM; PIGEON RIVER DIKES; POLAR- WANDERING; POTASSIUM-ARGON; REVERSE MAGNETIZATION; SILLS;

Roder, D. L., 1973, The petrology and chemistry of the Round Lake intrusion, northwest Wisconsin [M.S. Thesis]: University of Wisconsin, Madison, 115 p. GEOCHEMISTRY; MELLEN COMPLEX; PETROLOGY; ROUND LAKE INTRUSION; UNITED-STATES; WISCONSIN;

Roder, D. L., and Cameron, E. N., 1973, The petrology and chemistry of the Round Lake Intrusion, northwestern Wisconsin [abs.]: 19th Annual Institute on Lake Superior Geology, Madison, WI, v. 19, p. 30. CRYPTIC LAYERING; GEOCHEMISTRY; ILMENITE; LAYERED INTRUSION; MELLEN COMPLEX; MINERAL CHEMISTRY; PETROLOGY; ROUND LAKE INTRUSION; TITANOMAGNETITE; UNITED-STATES; WISCONSIN;

Roedder, E., and Weiblen, P. W., 1971, Petrology of silicate melt inclusions, Apollo 11 and Apollo 12 and terrestrial equivalents, in Proceedings of the Second Lunar Science Conference:, The M.I.T. Press, v. 1, p. 507-528. APOLLO; APOLLO 11; APOLLO 12; BASALTS; CHROME SPINELS; CHROMIUM SPINEL; GLASS; HAWAII; ILMENITE; IMMISCIBLE LIQUID; INCLUSIONS; KREEP; LUNAR SAMPLES; MELT INCLUSIONS; MINERAL CHEMISTRY; MINNESOTA; MOON; NORTH SHORE VOLCANIC GROUP; OLIVINE; PETROLOGY; SILICATE MELT; SPINEL; UNITED-STATES; VOLCANIC GLASS; VOLCANIC ROCKS;

Rogge, M. K., 1989, Geochemistry of the Sonju Lake layered mafic intrusion [M.S. Thesis]: Iowa State University, Ames, 92 p. DULUTH COMPLEX; GEOCHEMISTRY; IGNEOUS LAYERING; LAYERED INTRUSION; MAFIC; MINNESOTA; SONJU LAKE; SONJU LAKE INTRUSION; UNITED-STATES;

Rohn, K. H., 1981, A copper country field trip: Jewelry Making Gems and Minerals, v. 526, p. 16-18. AGATE; CHALCEDONY; COLLECTING; COPPER; COPPER-HARBOR; FRAMEWORK-SILICATES; KEWEENAW COUNTY; KEWEENAW PENINSULA; MICHIGAN; MICHIGAN COPPER DISTRICT; MINERALOGY; MINERALS; MOHAWK; NATIVE-ELEMENTS; POPULAR AND ELEMENTARY GEOLOGY; SEDIMENTARY-ROCKS; SEDIMENTS; SILICA-MINERALS; SILICATES; SILVER; UNITED-STATES; UPPER-PENINSULA;

Rohrbacher, T. J., 1968, Selected trace elements, copper, and iron distributions in the Copper Harbor Conglomerate (Precambrian), White Pine, Michigan [M.S. Thesis]: University of Toledo, Toledo, Ohio CLASTIC-ROCKS; CONGLOMERATE; COPPER; COPPER HARBOR CONGLOMERATE; GEOCHEMISTRY; IRON; MICHIGAN; MICHIGAN COPPER DISTRICT; NONESUCH SHALE; ONTONAGON-COUNTY; ORONTO-GROUP; SEDIMENTARY-PETROLOGY; SEDIMENTARY-ROCKS; SEDIMENTS; TRACE ELEMENTS ANALYSES; UNITED- STATES; UPPER-PENINSULA; WHITE PINE MINE;

143 Rollo, C. C., 1967, A relation between sample spacing and error of grade estimation at the White Pine Mine [M.S. Thesis]: Michigan Technological University, Houghton COPPER; GRADE; MICHIGAN; MICHIGAN COPPER DISTRICT; MINE; MINING; ONTONAGON-COUNTY; SAMPLING; UNITED-STATES; UPPER-PENINSULA; WHITE PINE MINE;

Rominger, C. L., 1876, Observations on the Ontonagon silver-mining district and the slate quarries of Huron Bay, in: Michigan Geologica Survey, v. 3, pt. 1, p. 151-166. MICHIGAN; MINING; ONTONAGON-COUNTY; QUARRIES; QUARRY; SILVER; SLATE ISLANDS; UNITED- STATES; UPPER-PENINSULA;

---, 1895, Geological report on the Upper Peninsula of Michigan iron and copper regions: Michigan Geological Survey, 179 p. COPPER; GEOLOGY; IRON; IRON-FORMATION; LOWER-PROTEROZOIC; MICHIGAN; MICHIGAN COPPER DISTRICT; UNITED-STATES; UPPER- PENINSULA;

Roscoe, S. E., 1965, Metallographic study, Sault Ste. Marie to Chebougamou. Geological Survey of Canada, Paper 65-1, p. 153-156 CANADA; CHEBOUGAMOU; METALLOGENY; ONTARIO; SAULT STE. MARIE;

Roscoe, S. M., 1966, Metallogenic study, Lake Superior-Chibougamu region [abs.]: 12th Annual Institute on Lake Superior Geology, Sault Ste. Marie, MI, v. 12, p. 19. ARCHEAN; ASBESTOS; BERYLLIUM; BRECCIA PIPE; CANADA; COPPER; DISTRICT OF SUDBURY; GOLD; GREENSTONE BELTS; IRON-FORMATION; LAKE SUPERIOR; LAKE SUPERIOR REGION; LEAD; LITHIUM; METALLOGENY; MINERAL DEPOSITS; MINERALIZATION; MOLYBDENUM; NATIVE-SILVER; NICKEL; PEGMATITE; PITCHBLENDE; SUDBURY IGNEOUS COMPLEX; THORIUM; URANIUM; ZINC;

Rose, W. I., 1994, Volcanic geology of eastern Isle Royale, Michigan: 40th Annual Institute on Lake Superior Geology, Part 3, Field Trip Guidebook, Houghton, MI, v. 40, 51 p. CANADA; CLIFF MINE; COPPER HARBOR CONGLOMERATE; GEOLOGY; GEOPHYSICS; GLACIAL GEOLOGY; GLIMPCE; ISLE ROYALE; ISLE ROYALE FAULT; LAKE SUPERIOR; MICHIGAN; ONTARIO; ORONTO-GROUP; PORTAGE LAKE VOLCANICS; REFLECTION; SEISMIC; SEISMIC-SURVEYS; UNITED-STATES; UPPER-PENINSULA;

Ross, B. A., 1985, A petrologic study of the Bardon Peak Peridotite, Duluth Complex [M.S. Thesis]: University of Minnesota, Duluth, 140 p. BARDON PEAK; DULUTH; DULUTH COMPLEX; LAYERED INTRUSION; MINERAL CHEMISTRY; MINNESOTA; OLIVINE; OUIS; OXIDE-BEARING ULTRAMAFIC INTRUSION; PERIDOTITE; PETROLOGY; PYROXENE; ST. LOUIS COUNTY; UNITED-STATES;

---, 1985, Petrogenesis of the Bardon Peak Peridotite, Duluth Complex [abs.]: 31st Annual Institute on Lake Superior Geology, Kenora, ONT, v. 31, p. 81-82. BARDON PEAK; DULUTH; DULUTH COMPLEX; LAYERED INTRUSION; MINNESOTA; PERIDOTITE; PETROGENESIS; ST. LOUIS COUNTY; UNITED-STATES;

Routledge, R. E., Parrish, I. S., and Leigh, O. E., 1982, Ashland Quadrangle, Wisconsin, Michigan, and Minnesota: Bendix Field Engineering Corporation, Technical Library, Grand Junction, CO, U.S., 31 p. ASHLAND 2 DEGREE QUADRANGLE; ASHLAND COUNTY; BAYFIELD- COUNTY; DOUGLAS-COUNTY; ECONOMIC GEOLOGY; GEOCHEMISTRY; GOGEBIC-COUNTY; IRON-COUNTY; MAPS; METHODS; MICHIGAN; MINERAL EXPLORATION; MINNESOTA; SEDIMENTARY-ROCKS; SEDIMENTS; ST. LOUIS COUNTY; SURVEYS; UNITED- STATES; URANIUM; URANIUM-ORES; WASHBURN-COUNTY; WISCONSIN;

Roy, J. L., and Robertson, W. A., 1975, Paleomagnetic results from the Jacobsville Sandstone [abs.]: Eos (American Geophysical Union Transactions), v. 56, p. 596. CANADA; GEOPHYSICS; JACOBSVILLE-SANDSTONE; KEWEENAW PENINSULA; MAGNETIZATION; MICHIGAN; ONTARIO; PALEOMAGNETISM; POLE-POSITIONS; REVERSALS; SANDSTONE; SAULT STE. MARIE; SEDIMENTARY-ROCKS; SEDIMENTS; STRATIGRAPHY; UNITED-STATES;

---, 1978, Paleomagnetism of the Jacobsville Formation and the apparent polar path for the interval -1100 to -670 m.y. for North America: Journal of Geophysical Research, v. 83, no. B3, p. 1289-1304. CANADA; GEOPHYSICS; HADRYNIAN; JACOBSVILLE-SANDSTONE; KEWEENAW PENINSULA; LAURENTIA; MICHIGAN; ORONTO-GROUP; PALEOGEOGRAPHY; PALEOMAGNETISM; POLAR-WANDERING; POLE- POSITIONS; REVERSALS; SANDSTONE; SEDIMENTARY-ROCKS; SEDIMENTS; STRATIGRAPHY; UNITED-STATES; UPPER- PENINSULA;

---, 1978, Paleomagnetism of the Jacobsville Formation and the apparent polar path for the interval - 1,000 to - 670 m.y. for North America [abs.]: Eos (American Geophysical Union Transactions), v. 59, p. 54. GEOPHYSICS; JACOBSVILLE-SANDSTONE; MICHIGAN; PALEOMAGNETISM; POLAR-WANDERING; UNITED-STATES; UPPER-PENINSULA;

Roy, R. F., 1963, Heat flow measurements in the United States [Ph.D. Dissertation]: Harvard University, Cambridge, Massachusetts GEOPHYSICS; HEAT-FLOW; KEWEENAW COUNTY; KEWEENAW PENINSULA; MICHIGAN; MICHIGAN COPPER DISTRICT; NONESUCH SHALE; ONTONAGON-COUNTY; ORONTO-GROUP; UNITED-STATES; UPPER-PENINSULA; WHITE PINE MINE;

Rudashevsky, N. S., Weiblen, P. W., Stoynov, H., and Saini-Eidukat, B., 1995, Products of electric pulse disaggregation of some Keweenawan rocks [abs.]: 41st Annual Institute on Lake Superior Geology, Marathon, ONT, v. 41, p. 61. ANTIMONY; BARITE; BISMUTH; COPPER; COPPER HARBOR CONGLOMERATE; DULUTH COMPLEX; ELECTRIC PULSE DISAGGREGATION; FROODITE; GOLD; LAKE COUNTY; MICHIGAN; MICHIGAN COPPER DISTRICT; MINERAL PROCESSING; MINERAL SEPARATION; MINERALIZATION; MINNESOTA; NATIVE COPPER; NICKEL; NONESUCH SHALE; ONTONAGON-COUNTY; ORONTO-GROUP; PGE; PLATINUM; PLATINUM-GROUP ELEMENTS; SELENIUM; SILVER; SOUTH KAWISHIWI INTRUSION; SPRUCE ROAD; SUDBURYITE; SULFIDES; UNITED-STATES; UPPER-PENINSULA; WHITE PINE MINE; ZIRCON;

Ruiz, J., Jones, L. M., and Kelly, W. C., 1984, Rubidium-strontium dating of ore deposits hosted by Rb-rich rocks, using calcite and other common Sr-bearing minerals: Geology, v. 12, p. 259-262. AGE DATING; CALCITE; COPPER; COPPER HARBOR CONGLOMERATE; EUROPE; FLUORITE; GEOCHRONOLOGY; MEXICO; MICHIGAN; MICHIGAN COPPER DISTRICT; NONESUCH SHALE; ONTONAGON-COUNTY;

144 ORE-DEPOSITS; ORONTO-GROUP; PANASQUEIRA; PARRAL; PORTUGAL; RUBIDIUM-STRONTIUM; TIN; TUNGSTEN; UNITED- STATES; UPPER-PENINSULA; VEINS; WHITE PINE MINE;

Ruotsala, A. P., and Tufford, S. P., 1965, Chemical analyses of igneous rocks:, Minnesota Geological Survey, Information Circular 2, 87 p. GEOCHEMISTRY; MAJOR ELEMENT ANALYSES; MINNESOTA; UNITED-STATES; VOLCANIC ROCKS; WHOLE ROCK ANALYSES;

Rush, R. J., 1984, Geophysical and geotechnical investigations near Dupee shaft, Hancock mine, Hancock, Michigan [M.S. Thesis]: Michigan Technological University, Houghton GEOPHYSICS; HANCOCK MINE; HOUGHTON-COUNTY; MICHIGAN; MINE; UNITED-STATES; UPPER-PENINSULA;

Russell, D. J., 1982, Paleozoic geology of the Sault Ste. Marie-St. Joseph island area, in Wood, J., White, O. L., Barlow, R. B., and Colvine, A. C., eds., Summary of field work, 1982:, Ontario Geological Survey, Miscellaneous Paper 106, p. 112-114. CAMBRIAN; CANADA; DIAGENESIS; JACOBSVILLE-SANDSTONE; LITHOSTRATIGRAPHY; MIDDLE-ORDOVICIAN; ONTARIO; PALEOZOIC; PHANEROZOIC; SAINT JOSEPH ISLAND; SANDSTONE; SAULT STE. MARIE; SEDIMENTARY-ROCKS; SEDIMENTS; STRATIGRAPHY; UPPER-CAMBRIAN;

Ryan, P. J., and Weiblen, P. W., 1984, Pt and Ni arsenide minerals in the Duluth Complex [abs.]: 30th Annual Institute on Lake Superior Geology, Wausau, WI, v. 30, p. 58-60. ARSENIDES; BABBITT; BISMUTH; CHALCOPYRITE; COPPER; CUBANITE; DULUTH COMPLEX; GRAPHITE; LAYERED INTRUSION; LOCAL BOY; MASSIVE SULFIDE ORE; MAUCHERITE; MINERAL CHEMISTRY; MINERAL DEPOSIT; MINERALOGY; MINNAMAX; MINNESOTA; NICCOLITE; NICKEL; PARTRIDGE RIVER INTRUSION; PENTLANDITE; PGE; PLATINUM; PLATINUM-GROUP ELEMENTS; PYRRHOTITE; SHAFT; SPERRYLITE; ST. LOUIS COUNTY; SULFIDES; TELLURIDES; UNITED-STATES;

Ryan, R. M., 1984, Chemical, isotopic, and petrographic study of the sulfides in the Duluth Complex cloud zone [M.S. Thesis]: Indiana University, Bloomington, 88 p. DRILL HOLE; B1-132; BABBITT; CLOUD ZONE; COPPER; DULUTH COMPLEX; GEOCHEMISTRY; LAYERED INTRUSION; MINERAL DEPOSIT; MINERALIZATION; MINNAMAX; MINNESOTA; NICKEL; ORE DEPOSIT; PARTRIDGE RIVER INTRUSION; PETROGRAPHY; PETROLOGY; ST. LOUIS COUNTY; STABLE-ISOTOPES; SULFIDE; SULFIDES; UNITED-STATES;

Ryan, R. M., and Ripley, E. M., 1983, Genesis of cloud zone Cu-Ni mineralization, Babbitt prospect, Minnesota [abs.]: Geological Society of America Abstracts with Programs, v. 15, p. 676. BABBITT; CLOUD ZONE; COPPER; DULUTH COMPLEX; GENESIS; LAYERED INTRUSION; LOCAL BOY; MINERAL DEPOSIT; MINERALIZATION; MINNAMAX; MINNESOTA; NICKEL; ORE DEPOSIT; ORE GENESIS; PARTRIDGE RIVER INTRUSION; ST. LOUIS COUNTY; SULFIDE; SULFIDES; UNITED-STATES;

Ryan, W. A., and Kreisman, P. J., 1979, Exploration, in Veith, D. L., Kreisman, P. J., and Poppe, R. H., eds., Minnesota Regional Copper-Nickel Study:, Minnesota Environmental Quality Board, v. 2, p. 27p. COPPER; DULUTH COMPLEX; EXPLORATION; HISTORY; LAKE COUNTY; LAYERED INTRUSION; MINNESOTA; NICKEL; PROSPECTING; REGIONAL COPPER-NICKEL STUDY; ST. LOUIS COUNTY; UNITED- STATES;

Ryu, J., Ward, S. H., Nash, W. P., and Buzzell, D., 1973, Ke and tan * spectra of dry lunar analog measured by various techniques: Geophysics, v. 38, p. 125-134. BASALTIC HORNFELS; DULUTH COMPLEX; ELECTRICAL PROPERTIES; GEOPHYSICS; HORNFELS; LAYERED INTRUSION; LUNAR BASALT; MINNESOTA; UNITED-STATES;

Sabelin, T., 1979, Trace element and Sr isotopic geochemistry of the Keweenawan volcanics of Minnesota [M.S. Thesis]: University of Minnesota, Minneapolis, 47 p. AGE DATING; GEOCHEMISTRY; GEOCHRONOLOGY; MINNESOTA; NORTH SHORE VOLCANIC GROUP; RADIOGENIC ISOTOPES; SR; STRONTIUM; TRACE ELEMENTS ANALYSES; UNITED-STATES; VOLCANIC ROCKS;

---, 1985, Platinum group element minerals in the Duluth Complex [abs.]: 31st Annual Institute on Lake Superior Geology, Kenora, ONT, v. 31, p. 83-84. BIRCH LAKE; DRILL HOLE; DU-15; DULUTH COMPLEX; LAYERED INTRUSION; MINNESOTA; PGE; PLATINUM-GROUP ELEMENTS; SOUTH KAWISHIWI INTRUSION; UNITED-STATES;

---, 1987, Association of platinum deposits with chromium occurrences: An overview with implications for the Duluth Complex: Skillings Mining Review, v., p. 4-7. Nov. 21 BIRCH LAKE; CHROMIUM; DRILL HOLE; DU-15; DULUTH COMPLEX; LAYERED INTRUSION; MINNESOTA; PLATINUM; SOUTH KAWISHIWI INTRUSION; ST. LOUIS COUNTY; UNITED-STATES;

Sabelin, T., and Iwasaki, I., 1985, Metallurgical evaluation of chromium-bearing drill core samples from the Duluth Complex: Minneapolis, Minerals Resources Research Center, University of Minnesota, Contract Report of Department of Natural Resources, 58 p. BIRCH LAKE; CHROMIUM; DRILL HOLE; DU-15; DULUTH COMPLEX; LAYERED INTRUSION; METALLURGY; MINNESOTA; SOUTH KAWISHIWI INTRUSION; ST. LOUIS COUNTY; UNITED-STATES;

---, 1986, Evaluation of platinum group metal occurrence in Duval 15 drill core from the Duluth Complex: Minneapolis, Minerals Resources Research Center, University of Minnesota, Internal Report, BIRCH LAKE; CHROMIUM; COPPER; DRILL HOLE; DU-15; DULUTH COMPLEX; LAYERED INTRUSION; MINERAL CHEMISTRY; MINERALOGY; MINNESOTA; NICKEL; PALLADIUM; PETROLOGY; PGE; PLATINUM; PLATINUM-GROUP ELEMENTS; SOUTH KAWISHIWI INTRUSION; ST. LOUIS COUNTY; UNITED-STATES;

Sabelin, T., Iwasaki, I., and Reid, K. J., 1986, Platinum group minerals in the Duluth Complex and their beneficiation behaviors: Skillings Mining Review, v. 23, p. 4-7. BENEFICIATION; BIRCH LAKE; DULUTH COMPLEX; LAYERED INTRUSION; METALLURGY; MINERAL PROCESSING; MINNESOTA; PGM; PLATINUM-GROUP MINERALS; SOUTH KAWISHIWI INTRUSION; ST. LOUIS COUNTY; UNITED- STATES;

---, 1986, Platinum group minerals in the Duluth Complex and their beneficiation behaviors: Minneapolis, University of Minnesota, Proceedings of the 59th Annual Meeting, Minnesota Section, American Institute of Mining and Metallurgical Engineers, 12 p. BENEFICIATION; BIRCH LAKE;

145 DULUTH COMPLEX; LAYERED INTRUSION; METALLURGY; MINERAL PROCESSING; MINNESOTA; PGM; PLATINUM-GROUP MINERALS; SOUTH KAWISHIWI INTRUSION; ST. LOUIS COUNTY; UNITED-STATES;

---, in press, Platinum-iron alloys in the Duluth Gabbro Complex; mineralogy and beneficiation. Proceedings of Process Mineralogy VI, Annual AIME Meeting, New Orleans, 1986 BENEFICIATION; BIRCH LAKE; DULUTH COMPLEX; IRON; LAYERED INTRUSION; MINERAL PROCESSING; MINERALOGY; MINNESOTA; PGE; PLATINUM; PLATINUM-GROUP ELEMENTS; SOUTH KAWISHIWI INTRUSION; ST. LOUIS COUNTY; UNITED-STATES;

Sabelin, T., Weiblen, P. W., and Saini-Eidukat, B., 1989, Similarities in textures and mineral associations of platinum group minerals in the Duluth Complex, MN and the Noril'sk-Talnakh intrusions, USSR [abs.]: Geological Society of America Abstracts with Programs, v. 21, p. A262. ASIA; BIRCH LAKE; DU-15; DULUTH COMPLEX; LAYERED INTRUSION; MESOZOIC; MINERALOGY; MINNESOTA; NORIL'SK; PGE; PHANEROZOIC; PLATINUM-GROUP ELEMENTS; RUSSIA; SIBERIA; SOUTH KAWISHIWI INTRUSION; ST. LOUIS COUNTY; TALNAKH; TRIASSIC; UNITED-STATES;

Sage, R. P., 1974, Geology of the Slate Islands, District of Thunder Bay, in Milne, V. G., Hewitt, D. F., and Card, K. D., eds., Summary of Field Work, 1974:, Ontario Division of Mines, M.P. 59, p. 80-86. ARCHEAN; CANADA; DIABASE; DIKES; DISTRICT OF THUNDER BAY; FOLDING; ONTARIO; SLATE ISLANDS; STRUCTURAL-GEOLOGY; VOLCANIC ROCKS;

---, 1978, Radioactive diatremes north of Lake Superior, in Summary of field work:, Ontario Geological Survey, Miscellaneous Paper 82, p. 53-66. ALKALIC COMPLEX; ALKALINE; CANADA; DIATREME; DISTRICT OF THUNDER BAY; ONTARIO; RADIOACTIVE;

---, 1982, Mineralization in diatreme structures north of Lake Superior:, Ontario Geological Survey, Study 27, 79 p. ALKALIC COMPLEX; ALKALINE; ALKALINE INTRUSION; ARCHEAN; BRECCIA PIPE; BRECCIATION; CANADA; CARBONATITE; COLDWELL COMPLEX; DEAD HORSE CREEK DIATREME; DIATREME; DIKES; DISTRICT OF THUNDER BAY; ECONOMIC GEOLOGY; EXPLORATION; GOLD RANGE DIATREME; MAPS; MCKELLAR CREEK DIATREME; MINERALIZATION; NEYS DIATREME; NEYS PENINSULA; ONTARIO; PORT COLDWELL; SLATE ISLANDS; STRUCTURAL-GEOLOGY;

---, 1985, Geology of carbonatite-alkalic rock complexes in Ontario: Chipman Lake area:, Ontario Geological Survey, Study 44, 40 p. AGE DATING; ALKALINE INTRUSION; CANADA; CARBONATITE; CHIPMAN LAKE CARBONATITE COMPLEX; DIKES; DISTRICT OF COCHRANE; DISTRICT OF THUNDER BAY; FAULTS; FENITE; GEOCHRONOLOGY; GEOLOGY; ONTARIO; POTASSIUM-ARGON; STRUCTURAL-GEOLOGY;

---, 1986, Alkalic rock complexes-carbonatites of northern Ontario and their economic potential [Ph.D. Dissertation]: Carleton University, Ottawa, Ontario, Canada, 355 p. ALKALIC COMPLEX; ALKALINE; ALKALINE INTRUSION; CANADA; CARBONATITE; CARGILL TOWNSHIP CARBONATITE COMPLEX; COLDWELL COMPLEX; COPPER; DISTRICT OF THUNDER BAY; ECONOMIC GEOLOGY; FAULTS; GEOLOGY; KAPUSKASING STRUCTURAL ZONE; KILLALA LAKE ALKALIC COMPLEX; LOWER-PROTEROZOIC; MARTISON CARBONATITE COMPLEX; MINERALIZATION; NICKEL; NIOBIUM; ONTARIO; PGE; PHOSPHORUS; PLATINUM-GROUP ELEMENTS; PORT COLDWELL; RARE-EARTH ELEMENTS; REE; STRUCTURAL-GEOLOGY; TRANS SUPERIOR TECTONIC ZONE;

---, 1987, Geology of carbonatite-alkalic rock complexes in Ontario: Prairie Lake Carbonatite Complex, District of Thunder Bay:, Ontario Geological Survey, Study 46, 91 p. ALKALINE; ALTERATION; APATITE; BASE METAL ANALYSES; BRECCIA; BRECCIATION; CANADA; CARBONATITE; DIATREME; DIKES; DISTRICT OF THUNDER BAY; ECONOMIC GEOLOGY; EXPLORATION; FENITE; GEOCHEMISTRY; GEOLOGY; MAJOR ELEMENT ANALYSES; MINERAL CHEMISTRY; MINOR ELEMENT ANALYSES; NIOBIUM; ONTARIO; PETROLOGY; PRAIRIE LAKE CARBONATITE COMPLEX; STRUCTURAL-GEOLOGY; TRACE ELEMENT ANALYSES; URANIUM; WHOLE ROCK ANALYSES; WOLLASTONITE;

---, 1987, Geology of carbonatite-alkalic rock complexes in Ontario: Nemegosenda Lake Alkalic Rock Complex, District of Sudbury:, Ontario Geological Survey, Study 34, 132 p. ALKALIC COMPLEX; ALKALINE; CANADA; DISTRICT OF SUDBURY; GEOLOGY; KAPUSKASING STRUCTURAL ZONE; NEMEGOSENDA LAKE ALKALIC COMPLEX; ONTARIO; PROTEROZOIC;

---, 1987, Geology of carbonatite-alkalic rock carbonatite complexes in Ontario: Big Beaver House Carbonatite Complex, District of Kenora:, Ontario Geological Survey, Study 51, 71 p. AGE DATING; BIG BEAVER HOUSE CARBONATITE COMPLEX; CANADA; CARBONATITE; DISTRICT OF KENORA; GEOCHRONOLOGY; GEOLOGY; ONTARIO; POTASSIUM-ARGON; PROTEROZOIC;

---, 1988, Geology of carbonatite-alkalic rock complexes in Ontario: Seabrook Lake Carbonatite Complex, District of Algoma. Ontario Geological Survey, Study 31, 45 p ALKALINE; CANADA; CARBONATITE; DISTRICT OF ALGOMA; GEOLOGY; ONTARIO; SEABROOK LAKE CARBONATITE COMPLEX;

---, 1988, Geology of carbonatite-alkalic rock complexes in Ontario: Firesand River Carbonatite Complex, District of Algoma:, Ontario Geological Survey, Study 47, 82 p. ALKALINE; CANADA; CARBONATITE; DISTRICT OF ALGOMA; FIRESAND RIVER CARBONATITE COMPLEX; GEOLOGY; KAPUSKASING STRUCTURAL ZONE; ONTARIO; PROTEROZOIC;

---, 1988, Geology of carbonatite-alkalic rock complexes in Ontario: Lackner Lake Alkalic Rock Complex, District of Sudbury:, Ontario Geological Survey, Study 32, 141 p. ALKALIC COMPLEX; ALKALINE; CANADA; DISTRICT OF SUDBURY; GEOLOGY; KAPUSKASING STRUCTURAL ZONE; LACKNER LAKE ALKALIC COMPLEX; ONTARIO; PROTEROZOIC;

---, 1988, Geology of carbonatite-alkalic rock complexes in Ontario: Killala Lake Alkalic Rock Complex, District of Thunder Bay:, Ontario Geological Survey, Study 45, 120 p. ALKALIC COMPLEX; ALKALINE; BASE METAL ANALYSES; CANADA; COPPER; DIKES; DISTRICT OF THUNDER BAY; ECONOMIC GEOLOGY; EXPLORATION; FAULTS; FELDSPARS; GEOCHEMISTRY; GEOLOGY; KILLALA LAKE ALKALIC COMPLEX; MAJOR ELEMENT ANALYSES; MINERAL CHEMISTRY; MINOR ELEMENT ANALYSES; NICKEL; OLIVINE;

146 ONTARIO; PETROGRAPHY; PETROLOGY; PYROXENE; STRUCTURAL-GEOLOGY; TRACE ELEMENT ANALYSES; WHOLE ROCK ANALYSES;

---, 1988, Geology of carbonatite-alkalic rock complexes in Ontario: Clay-Howells Alkalic Rock Complex, District of Cochrane:, Ontario Geological Survey, Study 37, 104 p. ALKALIC COMPLEX; ALKALINE; CANADA; CLAY-HOWELLS ALKALIC COMPLEX; DISTRICT OF COCHRANE; GEOLOGY; KAPUSKASING STRUCTURAL ZONE; ONTARIO; PROTEROZOIC;

---, 1988, Geology of carbonatite-alkalic rock complexes in Ontario: Schryburt Lake Carbonatite Complex, District of Kenora:, Ontario Geological Survey, Study 50, 43 p. AGE DATING; ALKALINE; CANADA; CARBONATITE; DISTRICT OF KENORA; GEOCHRONOLOGY; GEOLOGY; ONTARIO; POTASSIUM-ARGON; SCHRYBURT LAKE CARBONATITE COMPLEX;

---, 1988, Geology of carbonatite-alkalic rock complexes in Ontario: Valentine Township Carbonatite Complex, District of Cochrane:, Ontario Geological Survey, Study 39, 37 p. ALKALINE; CANADA; CARBONATITE; DISTRICT OF COCHRANE; GEOLOGY; KAPUSKASING STRUCTURAL ZONE; ONTARIO; VALENTINE TOWNSHIP CARBONATITE COMPLEX;

---, 1991, Alkalic rock, carbonatite and kimberlite complexes of Ontario, Superior Province, in Thurston, P. C., ed., :, Ontario Geological Survey, Special Volume 4, p. 683-709. AGE DATING; ALBANY FORKS CARBONATITE COMPLEX; ALKALIC COMPLEX; ALKALINE; ALKALINE INTRUSION; ALLEN LAKE CARBONATITE; ARCHEAN; ARGOR CARBONATITE COMPLEX; BIG BEAVER HOUSE CARBONATITE COMPLEX; BORDEN TOWNSHIP CARBONATITE COMPLEX; BRENT CRATER; BURRITT ISLAND ALKALIC COMPLEX; CALLANDER BAY ALKALIC COMPLEX; CAMBRIAN; CANADA; CARB LAKE CARBONATITE COMPLEX; CARBONATITE; CARGILL TOWNSHIP CARBONATITE COMPLEX; CLAY-HOWELLS ALKALIC COMPLEX; COLDWELL COMPLEX; DEAD HORSE CREEK DIATREME; DIAMONDS; DIATREME; DISTRICT OF ALGOMA; DISTRICT OF THUNDER BAY; EASTVIEW CARBONATITE; FIRESAND RIVER CARBONATITE COMPLEX; GEOCHRONOLOGY; GOLD RANGE DIATREME; GOLDRAY CARBONATITE COMPLEX; GOOSEBERRY BROOK; HECLA-KILMER ALKALIC COMPLEX; HERMAN LAKE ALKALIC COMPLEX; IRON ISLAND ALKALIC COMPLEX; JURASSIC; KAPUSKASING STRUCTURAL ZONE; KILLALA LAKE ALKALIC COMPLEX; KIMBERLITES; KINGFISHER RIVER; LACKNER LAKE ALKALIC COMPLEX; LAVERGNE CARBONATITE; LAWASHI RIVER; LITTLE DROWNING RIVER; LOWER- PROTEROZOIC; LUSK LAKE; MANITOU ISLAND ALKALIC COMPLEX; MARTISON CARBONATITE COMPLEX; MCKELLAR CREEK DIATREME; MESOZOIC; NAGAGAMI RIVER ALKALIC COMPLEX; NEMAG LAKE; NEMEGOSENDA LAKE ALKALIC COMPLEX; NEYS DIATREME; NISKIBI LAKE; ONTARIO; OTTAWA-BONNECHERE GRABEN; OTTO ALKALIC COMPLEX; PALEOZOIC; PHANEROZOIC; POOHBAH LAKE COMPLEX; POPLAR RIVER; PORT COLDWELL; PRAIRIE LAKE CARBONATITE COMPLEX; REGIONAL; SCHRYBURT LAKE CARBONATITE COMPLEX; SHENANGO TOWNSHIP ALKALIC COMPLEX; SLATE ISLANDS; SPANISH RIVER CARBONATITE COMPLEX; SPRINGPOLE LAKE; STRUCTURAL-GEOLOGY; STURGEON NARROWS ALKALIC COMPLEX; SULLIVAN ISLAND CARBONATITE COMPLEX; SUPERIOR PROVINCE; TEETZEL TOWNSHIP CARBONATITE; TRANS SUPERIOR TECTONIC ZONE; VALENTINE TOWNSHIP CARBONATITE COMPLEX; WAPIKOPA RIVER ALKALIC COMPLEX;

---, 1991, Precambrian geology, Slate Islands:, Ontario Geological Survey, Report 264, 109 p. ANIMIKIE; ANIMIKIE GROUP; ARCHEAN; ASBESTOS; BASE METAL ANALYSES; BRECCIATION; CANADA; COPPER; DEFORMATION; DIABASE; DIATREME; DIKES; DISTRICT OF THUNDER BAY; EXPLORATION; GEOCHEMISTRY; GEOLOGY; GOLD; GUNFLINT IRON-FORMATION; IRON; IRON-FORMATION; LAKE SUPERIOR; LAMPROPHYRE; LOWER-PROTEROZOIC; MAJOR ELEMENT ANALYSES; MAP; METAMORPHIC-ROCKS; METAMORPHISM; MINERAL DEPOSITS; MINOR ELEMENT ANALYSES; ONTARIO; OSLER GROUP; PALEOZOIC; PHANEROZOIC; ROVE FORMATION; SEDIMENTARY-ROCKS; SLATE ISLANDS; STRUCTURAL-GEOLOGY; SULFIDE; TRACE ELEMENT ANALYSES; UNCONFORMITY; VOLCANIC ROCKS; WHOLE ROCK ANALYSES;

Sage, R. P., Treacher, K., Meloche, D., and Bathe, D., 1975, Slate islands, District of Thunder Bay: Ontario Division of Mines, Preliminary Map Series, Map P.997, scale 1:7,920. ARCHEAN; CANADA; DISTRICT OF THUNDER BAY; MAP; ONTARIO; SLATE ISLANDS;

Sage, R. P., and Watkinson, D. H., 1991, Alkalic rock-carbonatite complexes of the Superior structural province, northern Ontario, Canada: Chronique de la Recherche Miniere, v. 504, p. 5-19. ALKALIC COMPLEX; ALKALINE; ALKALINE INTRUSION; ARCHEAN; ARGOR CARBONATITE COMPLEX; BIG BEAVER HOUSE CARBONATITE COMPLEX; BORDEN TOWNSHIP CARBONATITE COMPLEX; CAMBRIAN; CANADA; CARB LAKE CARBONATITE COMPLEX; CARBONATITE; CARGILL TOWNSHIP CARBONATITE COMPLEX; CHIPMAN LAKE CARBONATITE COMPLEX; CLAY-HOWELLS ALKALIC COMPLEX; COLDWELL COMPLEX; COPPER; DIKES; DISTRICT OF THUNDER BAY; FIRESAND RIVER CARBONATITE COMPLEX; FRACTURES; GEOCHRONOLOGY; GEOLOGY; GOLDRAY CARBONATITE COMPLEX; HECLA-KILMER ALKALIC COMPLEX; KAPUSKASING STRUCTURAL ZONE; KILLALA LAKE ALKALIC COMPLEX; KIMBERLITES; LACKNER LAKE ALKALIC COMPLEX; LAMPROPHYRE; LOWER-PROTEROZOIC; MARTISON CARBONATITE COMPLEX; MCKELLAR CREEK DIATREME; MINERALIZATION; NAGAGAMI RIVER ALKALIC COMPLEX; NEMOGOSENDA LAKE ALKALIC COMPLEX; NICKEL; ONTARIO; ORDOVICIAN; OTTAWA-BONNEECHERE GRABEN SYSTEM; PALEOZOIC; PGE; PHANEROZOIC; PHOSPHATE-DEPOSITS; PLATINUM-GROUP ELEMENTS; POOHBAH LAKE COMPLEX; PORT COLDWELL; PRAIRIE LAKE CARBONATITE COMPLEX; REGIONAL; SCHRYBURT LAKE CARBONATITE COMPLEX; SEABROOK LAKE CARBONATITE COMPLEX; SHENANGO TOWNSHIP ALKALIC COMPLEX; SPANISH RIVER CARBONATITE COMPLEX; STRUCTURAL-GEOLOGY; STURGEON NARROWS ALKALIC COMPLEX; SUPERIOR PROVINCE; TEETZEL TOWNSHIP CARBONATITE; TRANS SUPERIOR TECTONIC ZONE; UPPER CANADA KIMBERLITE; URANIUM; VALENTINE TOWNSHIP CARBONATITE COMPLEX; WAPIKOPA RIVER ALKALIC COMPLEX; ZONING;

---, 1995, Alkalic rocks of the Midcontinent Rift: 41st Annual Institute on Lake Superior Geology, Marathon, ONT, v. 41, Part 2a, Field Trip Guidebook, 74 p. AEROMAGNETICS; ALKALIC COMPLEX; ALKALINE; ALKALINE INTRUSION; ALTAITE; ATOKITE; BIG BAY- ASHBURTON BAY FAULT; BORNITE; BRECCIA; BRECCIATION; CANADA; CHIPMAN LAKE CARBONATITE COMPLEX; COLDWELL COMPLEX; COPPER; DEAD HORSE CREEK DIATREME; DISTRICT OF THUNDER BAY; EASTERN GABBRO; ECONOMIC GEOLOGY; ELECTRUM; GALENA; GEOLOGY; GEOPHYSICS; GREAT LAKES TECTONIC ZONE; GRENVILLE-FRONT; GUANGLINITE; GUIDEBOOK; HESSITE; HOLLINGWORTHITE; IRASITE; KAPUSKASING STRUCTURAL ZONE; KILLALA LAKE ALKALIC COMPLEX; KOTULSKITE; LAMPROPHYRE; MACKINAWITE; MAJAKITE; MCKELLAR CREEK DIATREME; MERENSKYITE; MERTIEITE;

147 MICHIPICOTEN ISLAND FAULT; MOLYBDENITE; NICKEL; ONTARIO; PALLADOARSENIDE; PGE; PLATARSITE; PLATINUM-GROUP ELEMENTS; PORT COLDWELL; PRAIRIE LAKE CARBONATITE COMPLEX; REGIONAL; SOPCHEITE; SPERRYLITE; STRUCTURAL- GEOLOGY; TELARGPALITE; TRANS SUPERIOR TECTONIC ZONE; TROILITE; URANIUM; ZVYAGINSKITE;

Saini-Eidukat, B., 1988, Sulfide mineralization and associated hydrous silicates in anorthositic rocks from the Duluth Complex [abs.]: 34th Annual Institute on Lake Superior Geology, Marquette, MI, v. 34, p. 91-92. ANORTHOSITE; ANORTHOSITIC SERIES; COPPER; DULUTH COMPLEX; HYDROUS SILICATES; LAYERED INTRUSION; MINERALIZATION; MINNESOTA; NICKEL; SULFIDE; SULFIDES; UNITED-STATES;

---, 1989, Distribution of platinum group elements in anorthositic rocks of the Duluth Complex [abs.], in Morey, G. B., ed., Workshop on the applicability of gold and platinum-group-element models in Minnesota:, Minnesota Geological Survey, Information Circular 30, p. 56-58. ANORTHOSITE; ANORTHOSITIC SERIES; DULUTH COMPLEX; LAYERED INTRUSION; MINNESOTA; PGE; PLATINUM-GROUP ELEMENTS; UNITED-STATES;

---, 1991, Platinum group elements in anorthositic rocks of the Duluth Complex, Minnesota: Petrogenetic and economic implications [Ph.D. Dissertation]: University of Minnesota, Minneapolis, 146 p. ANORTHOSITE; ANORTHOSITIC SERIES; DULUTH COMPLEX; LAYERED INTRUSION; MINNESOTA; PETROGENESIS; PGE; PLATINUM-GROUP ELEMENTS; ST. LOUIS COUNTY; TROCTOLITIC SERIES; UNITED-STATES;

Saini-Eidukat, B., and Kucha, H., 1991, An iron chloride hydroxide from the Duluth Complex, Minnesota with implications for metal mobility in hydrothermal systems [abs.]: Proceedings, 25th Annual Meeting, Society of Geology of Applied Mineral Deposits, Nancy, France, Balkema Publishing, Rotterdam CHLORIDES; CHLORINE; DULUTH COMPLEX; HIBBINGITE; HYDROTHERMAL; HYDROXIDE; LAYERED INTRUSION; MINNESOTA; MOBILITY; UNITED-STATES;

Saini-Eidukat, B., Kucha, H. K., and Keppler, H., 1994, Hibbingite, gamma-Fe2(OH)3Cl, a new mineral from the Duluth Complex, Minnesota with implications for oxidation of iron-bearing compounds and transport of metals: American Mineralogist, v. 79, no. 5-6, p. 555-561. ALTERATION; BRINES; CHLORIDES; CHLORINE; DULUTH COMPLEX; FLUIDS; HIBBINGITE; HYDROTHERMAL; LAYERED INTRUSION; METALS; MINERAL CHEMISTRY; MINERALIZATION; MINERALOGY; MINNESOTA; OLIVINE; OXIDATION; PLAGIOCLASE; SERPENTINE; SERPENTINIZATION; TRANSPORT; UNITED-STATES; WEATHERING;

Saini-Eidukat, B., Weiblen, P., Bitsianes, G., and Glascock, M., 1990, Contrasts between platinum group element contents and biotite compositions of Duluth Complex troctolitic and anorthositic series rocks: Mineralogy and Petrology, v. 42, p. 121-140. ANORTHOSITIC SERIES; BIOTITE; DULUTH COMPLEX; GEOCHEMISTRY; LAYERED INTRUSION; MINERAL CHEMISTRY; MINNESOTA; PGE; PLATINUM-GROUP ELEMENTS; TROCTOLITE SERIES; UNITED-STATES;

Saini-Eidukat, B., Weiblen, P., Glascock, M., and Bitsianes, G., 1989, Platinum-group elements in anorthositic rocks of the Duluth Complex, Minnesota, USA [abs.]: Geological Society of Finland Bulletin, v. 61, p. 8-9. ANORTHOSITIC SERIES; DULUTH COMPLEX; GEOCHEMISTRY; LAYERED INTRUSION; MINNESOTA; PGE; PLATINUM-GROUP ELEMENTS; UNITED-STATES;

St. John, C. M., Christianson, M., Petersen, D. L., and Hardy, M. P., 1979, Geotechnical analysis of underground mining methods for the copper-nickel orebodies of N.E. Minnesota, in 20th U.S. symposium on rock mechanics:, Proceedings Volume, p. 87-94. June 4-6, 1979, Austin, Texas BABBITT; COPPER; DULUTH COMPLEX; LAYERED INTRUSION; LOCAL BOY; MINERAL DEPOSIT; MINING; MINNAMAX; MINNESOTA; NICKEL; ORE-DEPOSITS; PARTRIDGE RIVER INTRUSION; ST. LOUIS COUNTY; UNDERGROUND MINING; UNITED-STATES;

Saja, D. B., and Gregg, W. J., 1990, Structural studies in the Huron Bay Parautochthon, Upper Michigan [abs.]: 36th Annual Institute on Lake Superior Geology, Thunder Bay, ONT, v. 36, p. 97-99. BARAGA COUNTY; GNEISSES; HURON BAY PARAUTOCHTHON; HURON-MOUNTAINS; JACOBSVILLE-SANDSTONE; KEWEENAW-BAY; LOWER-PROTEROZOIC; MICHIGAMME FORMATION; MICHIGAN; PARAUTOCHTHONOUS; PENOKEAN OROGENY; SANDSTONE; SEDIMENTARY-ROCKS; SEDIMENTS; STRUCTURAL-GEOLOGY; TECTONICS; UNITED-STATES; UPPER-PENINSULA;

Sales, R. H., 1959, Discussions - The White Pine copper deposit: Economic Geology, v. 54, p. 947-951. CHALCOCITE; COPPER; EPIGENETIC; GERMANY; HYDROTHERMAL; MANSFELD BASIN; MICHIGAN; MICHIGAN COPPER DISTRICT; NATIVE COPPER; NONESUCH SHALE; ONTONAGON-COUNTY; ORONTO-GROUP; SOLUTIONS; UNITED-STATES; UPPER-PENINSULA; WHITE PINE FAULT; WHITE PINE MINE;

Samson, C., 1991, Reprocessing and interpretation of GLIMPCE marine crustal reflection seismic data from eastern Lake Superior [Ph.D. Dissertation]: University of Toronto, Ontario, Canada CANADA; CRUST; GEOPHYSICS; GLIMPCE; LAKE SUPERIOR; REPROCESSING; SEISMIC; SEISMIC-SURVEYS;

Samson, C., and West, G., 1992, Structure and tectonic evolution of the Midcontinent Rift basins in eastern Lake Superior from reprocessing of GLIMPCE deep reflection seismic data [abs.]: Eos (American Geophysical Union Transactions), v. 73, no. 14, p. 320. CANADA; DISTRICT OF ALGOMA; GEOPHYSICS; GLIMPCE; KEWEENAW FAULT; MAMAINSE POINT; PROCESSING; SEISMIC; SEISMIC LINE F; SEISMIC- SURVEYS; STRUCTURAL-GEOLOGY; TECTONICS;

Samson, C., and West, G. F., 1989, Reprocessing multi-channel reflection data from Line F of GLIMPCE: Refraction analysis and static correction [abs.]: Eos (American Geophysical Union Transactions), v. 70, no. 15, p. 273. CANADA; GEOPHYSICS; GLIMPCE; LAKE SUPERIOR; MOHO; ONTARIO; REFLECTION; REFRACTION; SEISMIC; SEISMIC LINE F; SEISMIC-SURVEYS; UNITED-STATES;

---, 1992, Crustal structure of the Midcontinent rift system in eastern Lake Superior from controlled-amplitude analysis of GLIMPCE deep reflection seismic data: Canadian Journal of Earth Sciences, v. 29, no. 4, p. 636-649. CANADA; CRUST; GEOPHYSICS; GLIMPCE; LAKE SUPERIOR; ONTARIO; REFLECTION; SEISMIC; SEISMIC-SURVEYS; STRUCTURAL-GEOLOGY; UNITED-STATES;

148 ---, 1994, Detailed basin structure and tectonic evolution of the Midcontinent Rift System in eastern Lake Superior from reprocessing of GLIMPCE reflection seismic data: Canadian Journal of Earth Sciences, v. 31, no. 4, p. 629-639. BASIN; CANADA; EVOLUTION; FAULTS; GEOPHYSICS; GLIMPCE; LAKE SUPERIOR; ONTARIO; REFLECTION; SEISMIC; SEISMIC LINE F; SEISMIC-SURVEYS; STRUCTURAL-GEOLOGY; SYNCLINE; TECTONICS; UNITED-STATES;

Sandberg, A. E., 1938, Section across Keweenawan lavas at Duluth, Minnesota: Geological Society of America Bulletin, v. 49, p. 795-830. BASALT; CLASTIC; CLASTIC DIKE; CREVICE; DULUTH; MINNESOTA; NORTH SHORE VOLCANIC GROUP; SEDIMENTARY-ROCKS; SEDIMENTOLOGY; ST. LOUIS COUNTY; UNITED-STATES; VOLCANIC ROCKS;

Sandell, E. B., and Goldich, S. S., 1943, The rarer metallic constituents of some American igneous rocks. I: Journal of Geology, v. 51, p. 99-115. AITKIN COUNTY; BASE METAL ANALYSES; COBALT; COOK COUNTY; COPPER; DEVIL'S TRACK RIVER; DIABASE; DIFFERENTIATION; DIKE; DULUTH COMPLEX; ENDION SILL; GABBRO; GEOCHEMISTRY; GRANITE; GREENSTONE FLOW; IGNEOUS-PROCESSES; IGNEOUS-ROCKS; KANABEC COUNTY; KEARSARGE FLOW; LAYERED INTRUSION; LEAD; LLANO UPLIFT; MAJOR ELEMENT ANALYSES; MASSACHUSETTS; MICHIGAN; MICHIGAN COPPER DISTRICT; MINNESOTA; MISSOURI; MOLYBDENUM; MORRISON COUNTY; NEW ENGLAND; NEW HAMPSHIRE; NICKEL; NORTH SHORE VOLCANIC GROUP; RHYOLITE; SILLS; ST. FRANCOIS MOUNTAINS; ST. LOUIS COUNTY; TEXAS; UNITED-STATES; UPPER-PENINSULA; WHITE MOUNTAIN MAGMA SERIES; WHOLE ROCK ANALYSES; ZINC;

---, 1943, The rarer metallic constituents of some American igneous rocks. II: Journal of Geology, v. 51, p. 167-189. AITKIN COUNTY; BASE METAL ANALYSES; CALIFORNIA; COOK COUNTY; COPPER; DEVIL'S TRACK RIVER; DULUTH COMPLEX; ENDION SILL; GEOCHEMISTRY; GREENSTONE FLOW; KANABEC COUNTY; KEARSARGE FLOW; LAKE COUNTY; LAYERED INTRUSION; LLANO UPLIFT; LOWER-PROTEROZOIC; MICHIGAN; MICHIGAN COPPER DISTRICT; MINNESOTA; MISSOURI; MORRISON COUNTY; NEW ENGLAND; NICKEL; ST. FRANCOIS MOUNTAINS; ST. LOUIS COUNTY; TAYLOR'S FALLS; TEXAS; TRACE ELEMENT ANALYSES; UNITED-STATES; UPPER-PENINSULA;

Saremba, S. P., 1971, Development of a copper-nickel industry in northeastern Minnesota [M.S. Thesis]: University of Minnesota, Duluth, 62 p. Part 2 of a three-part thesis (Plan B) COPPER; DEVELOPMENT; DULUTH COMPLEX; MINERALIZATION; MINING; MINNESOTA; NICKEL; ST. LOUIS COUNTY; UNITED-STATES;

Sassani, D. C., 1992, Petrologic and thermodynamic investigation of the aqueous transport of platinum-group elements during alteration of mafic intrusive rocks [Ph.D. Dissertation]: Washington University, St. Louis, Missouri 2 volumes ALTERATION; COPPER; DULUTH COMPLEX; FISH LAKE; FLUIDS; GEOCHEMISTRY; HERCYNITE; ILMENITE; LAYERED INTRUSION; MAFIC; MAGNETITE; MINERAL CHEMISTRY; MINNESOTA; MOBILITY; MOLYBDENITE; NICKEL; OXIDE; PETROLOGY; PGE; PLATINUM-GROUP ELEMENTS; PLEONASTE; SPINEL; ST. LOUIS COUNTY; SULFIDES; THERMODYNAMICS; UNITED-STATES; DRILL HOLES; FHL-1; FHL-2;

Sassani, D. C., and Pasteris, J. D., 1988, Preliminary investigation of alteration in a basal section of the southern Duluth Complex, Minnesota, and the effects on the oxide and sulfide mineralization, in Kisvarsanyi, G., and Grant, S. K., eds., North American conference on tectonic control or ore deposits and the vertical and horizontal extent of ore systems: Rolla, University of Missouri at Rolla, p. 280-291. ALTERATION; DULUTH COMPLEX; FISH LAKE; ILMENITE; LAYERED INTRUSION; MAGNETITE; MINERALIZATION; MINNESOTA; OXIDE; ST. LOUIS COUNTY; SULFIDE; SULFIDES; UNITED-STATES;

---, 1991, Hydrothermal alteration of an oxide horizon in the basal zone of the Duluth Complex, Minnesota [abs.]: Eos (American Geophysical Union Transactions), v. 72, no. 17, p. 146. ALTERATION; CUMULATES; DRILL HOLE; DULUTH COMPLEX; FHL-2; FISH LAKE; FLUID INCLUSIONS; FLUIDS; HYDROTHERMAL; ILMENITE; LAYERED INTRUSION; METHANE; MINNESOTA; NITROGEN; OXIDES; OXYGEN FUGACITY; ST. LOUIS COUNTY; TEMPERATURE; TITANOMAGNETITE; UNITED-STATES;

---, 1992, Three-phase intergrowths in an oxide horizon of the basal zone of the Duluth Complex [abs.]: Minnesota Department of Natural Resources, Division of Minerals, Drill Core Library Newsletter, v. 2, p. 5 DULUTH COMPLEX; FISH LAKE; ILMENITE; LAYERED INTRUSION; MAGNETITE; MINNESOTA; OXIDE; PETROGRAPHY; SPINEL; ST. LOUIS COUNTY; UNITED-STATES;

Satterly, J., 1968, Aeromagnetic maps of carbonatite-alkalic complexes in Ontario: Ontario Department of Mines and Northern Affairs, Map P.452. AEROMAGNETIC SURVEY; AEROMAGNETICS; ALKALIC COMPLEX; ALKALINE; ALKALINE INTRUSION; CANADA; CARBONATITE; DISTRICT OF THUNDER BAY; GEOPHYSICS; MAPS; ONTARIO; PRAIRIE LAKE CARBONATITE COMPLEX; PROTEROZOIC;

Savard, C. S., Nelson, N. P., and Bowers, C. E., 1978, Hydrologic investigations of selected watersheds in the copper-nickel region of northeastern Minnesota: Minneapolis, MN, St. Anthony Hydraulic Laboratory, University of Minnesota, External Memorandum No. 155, Report to Minnesota Environmental Quality Board, 151 p. DULUTH COMPLEX; HYDROLOGY; LAKE COUNTY; LAYERED INTRUSION; MINNESOTA; MODELLING; MODELS; REGIONAL COPPER-NICKEL STUDY; ST. LOUIS COUNTY; UNITED-STATES; WATERSHEDS;

Sawkins, F. J., 1982, Metallogenesis in relation to rifting, in Continental and oceanic rifts: Washington, D.C., American Geophysical Union, Geodynamics Series 8, p. 259-270. METALLOGENESIS; METALLOGENY; MINERALIZATION; PLATE TECTONICS; RIFTING; UNITED- STATES;

Schaap, B. D., 1989, The geology and crustal structure of southwestern Minnesota using gravity and magnetic data [M.S. Thesis]: University of Minnesota, Minneapolis, 78 p. AEROMAGNETICS; ARCHEAN; CRUST; GEOLOGY; GEOPHYSICS; GRAVITY; MAGNETICS; MINNESOTA; MINNESOTA RIVER VALLEY; MINNESOTA RIVER VALLEY SUBPROVINCE; MODELLING; SHEAR ZONES; STRUCTURAL-GEOLOGY; UNITED-STATES;

149 Schleiss, W. A., 1986, A study of vein mineralization and wall rock alteration at the Delaware mine, Keweenaw County, Michigan [M.S. Thesis]: Michigan Technological University, Houghton, 86 p. ALTERATION; COPPER; DELAWARE MINE; KEWEENAW COUNTY; MICHIGAN; MICHIGAN COPPER DISTRICT; MINE; MINERALIZATION; ORE DEPOSIT; UNITED-STATES; UPPER-PENINSULA; VEINS; WALLROCK;

Schluter, R. B., 1982, Separation of copper-nickel mattes from Duluth Gabbro concentrates by flotation and magnetic methods:, U. S. Bureau of Mines, Report of Investigations 8646, 14 p. COBALT; COPPER; DULUTH COMPLEX; FLOTATION; GOLD; IRON; LAYERED INTRUSION; MAGNETIC SEPARATION; MATTE; METALLURGY; MINERAL CHEMISTRY; MINERAL PROCESSING; MINERALOGY; MINNESOTA; NICKEL; PGE; PLATINUM-GROUP ELEMENTS; PRECIOUS METALS; SILVER; SULFUR; UNITED-STATES;

Schluter, R. B., and Landstrom, A. B., 1976, Continuous pilot plant testing confirms floatability of Duluth Complex sulfides: Engineering and Mining Journal, v. 177, no. 4, p. 80-83. BENEFICIATION; DULUTH COMPLEX; FLOTATION; LAYERED INTRUSION; MINERAL PROCESSING; MINNESOTA; PILOT PLANT; SULFIDE; SULFIDES; UNITED-STATES;

Schluter, R. B., and Mahan, W. M., 1981, Flotation responses of two Duluth Complex copper-nickel ores:, U. S. Bureau of Mines, Report of Investigations 8509, 24 p. COPPER; DULUTH COMPLEX; FLOTATION; LAYERED INTRUSION; MINERAL PROCESSING; MINNESOTA; NICKEL; UNITED-STATES;

Schmidt, P. G., 1993, Nature and age of the Vermilion fault system, northern Minnesota [abs.]: 39th Annual Institute on Lake Superior Geology, Eveleth, MN, v. 39, p. 69. ARCHEAN; BIWABIK FAULT; DARK RIVER FAULT; FAULTS; KABETOGEMA-KENORA DIKE SWARM; KOOCHICHING COUNTY; MINNESOTA; SILVERDALE FAULT; ST. LOUIS COUNTY; STRUCTURAL-GEOLOGY; UNITED-STATES; VERMILION FAULT;

Schmidt, R. G., 1976, The Marquette Range Supergroup in the Gogebic iron district, Michigan and Wisconsin:, U. S. Geological Survey, Bulletin 1407, 40 p. GEOLOGY; GOGEBIC DISTRICT; GOGEBIC-COUNTY; IRON-FORMATION; LOWER-PROTEROZOIC; MARQUETTE RANGE SUPERGROUP; MICHIGAN; STRATIGRAPHY; UNITED-STATES; UPPER-PENINSULA; WISCONSIN;

Schmidt, R. G., and Trent, V. A., 1969, Mafic dikes in the Precambrian rocks of Gogebic County, Michigan [abs.]: 15th Annual Institute on Lake Superior Geology, Oshkosh, WI, v. 15, p. 31-33. DIABASE; DIKES; GEOPHYSICS; GOGEBIC-COUNTY; GREENSCHIST-FACIES; MAFIC; MAGNETICS; MARENISCO QUADRANGLE; METAMORPHISM; MICHIGAN; PRESQUE ISLE GRANITE; SOUTH RANGE; SULFIDES; UNITED-STATES; UPPER-PENINSULA; VOLCANIC ROCKS;

Schmidt, S. T., 1992, The formation of quartz amygdules during low grade metamorphism: Different precipitation mechanisms or different events? [abs.], in The transition from basalt to metabasalt: Environments, processes, and petrogenesis:, University of California, Davis, The International Geological Correlation Project 294: Very Low Grade Metamorphism. ALTERATION; AMYGDULE; CRYSTALLIZATION; DEPOSITION; FLUID; GREENSCHIST-FACIES; METAMORPHISM; MINNESOTA; NORTH SHORE VOLCANIC GROUP; OXYGEN ISOTOPES; QUARTZ; STABLE-ISOTOPES; TEMPERATURE; UNITED-STATES; ZEOLITE-FACIES;

Schmidt, S. T., and Green, J. C., 1989, Metamorphic zonation in the North Shore Volcanic Group, Minnesota [abs.]: 35th Annual Institute on Lake Superior Geology, Duluth, MN, v. 35, p. 78-79. METAMORPHISM; MINNESOTA; NORTH SHORE VOLCANIC GROUP; UNITED-STATES; ZONATION;

Schmidt, S. T., 1990, Alteration under conditions of burial metamorphism in the North Shore Volcanic Group - Mineralogical and geochemical zonation [Ph.D. Dissertation]: Heidelberger Geowissenschaftliche Abhandlungen, Band 41, 309 p. ALTERATION; BURIAL-METAMORPHISM; GEOCHEMISTRY; METAMORPHISM; MINERALOGY; MINNESOTA; NORTH SHORE VOLCANIC GROUP; UNITED-STATES; ZONATION;

---, 1993, Regional and local patterns of low-grade metamorphism in the North Shore Volcanic Group, Minnesota, USA: Journal of Metamorphic Geology, v. 11, p. 401-414. ALBITIZATION; MAFIC PHYLOSILICATES; METAMORPHIC ZONATION; METAMORPHISM; MINNESOTA; NORTH SHORE VOLCANIC GROUP; RIFTING; UNITED-STATES; VOLCANIC ROCKS;

Schmidt, S. T., and Green, J. C., 1992, Low grade metamorphism of the Keweenawan sequence in Minnesota and Michigan:, International Geological Correlation Programme, Project 294, Very Low Grade Metamorphism, Guidebook for Post-meeting field trip, 16-20 Sept., 1992, 77 p. GUIDEBOOK; METAMORPHISM; MICHIGAN; MINNESOTA; NORTH SHORE VOLCANIC GROUP; UNITED-STATES; UPPER- PENINSULA;

Schmoker, J. W., and Palacas, J. G., 1990, Porosity and organic geochemistry of Precambrian Midcontinent Rift system, Iowa: Petroleum potential of one-billion-year-old rocks [abs.]: American Association of Petroleum Geologists Bulletin, v. 74, no. 8, p. 1344-1345. CARROLL COUNTY; CLASTIC-ROCKS; ECONOMIC GEOLOGY; IOWA; NONESUCH SHALE; ORGANIC GEOCHEMISTRY; ORGANIC-MATERIALS; ORONTO- GROUP; OXIDATION; PETROLEUM; POROSITY; SANDSTONE; SEDIMENTARY-ROCKS; SEDIMENTS; SHALE; SILTSTONE; SOURCE- ROCKS; UNITED-STATES; WELLS;

---, 1990, Porosity of Precambrian sandstones in lower portion of the Eischeid #1 well, Carroll County, Iowa, in Anderson, R. R., ed., The Amoco M. G. Eischeid #1 deep petroleum test, Carroll County, Iowa: Report of preliminary investigations: Iowa City, Iowa Department of Natural Resources Geological Survey Bureau, Special Report Series #2, p. 135-142. CARROLL COUNTY; DRILL HOLE; IOWA; M.G. EISCHEID NO. 1; POROSITY; SANDSTONE; SEDIMENTARY-ROCKS; UNITED-STATES;

Schnieders, B. R., and Smyk, M. C., 1989, Schreiber-Hemlo resident geologist's district, in Report of Activities, 1988, Resident Geologists:, Ontario Geological Survey, Miscellaneous Paper 142, p. 133-155. ALKALIC COMPLEX; ALKALINE; ALKALINE INTRUSION; ARCHEAN; BRECCIA; CANADA; CARBONATITE; DEAD HORSE CREEK DIATREME; DIATREME; DISTRICT OF THUNDER BAY; GREENSTONE BELTS; ONTARIO; PROTEROZOIC;

150 Schoolcraft, H. R., 1821, Account of native copper in the southern shore of Lake Superior: American Journal of Science, v. 3, p. 202-216. COPPER; LAKE SUPERIOR; MICHIGAN; MINERALIZATION; NATIVE COPPER; UNITED-STATES; UPPER-PENINSULA;

Schwartz, G. M., 1925, A sulphide diabase from Cook County, Minnesota: Economic Geology, v. 20, p. 261-265. COOK COUNTY; DIABASE; DULUTH COMPLEX; LAYERED INTRUSION; LOGAN SILLS; MINERALIZATION; MINNESOTA; SULFIDE; SULFIDES; UNITED-STATES;

---, 1928, Copper veins on Susie Island, Lake Superior: Economic Geology, v. 23, p. 261-265. BARITE; BORNITE; CALCITE; CHALCOCITE; CHALCOPYRITE; COPPER; COVELLITE; FISSURE VEIN; LAKE SUPERIOR; MINERALIZATION; MINERALOGY; ORIGIN; PYRITE; QUARTZ; SULFIDES; SUSIE ISLAND; VEINS;

---, 1930, The relation of magnetite and ilmenite in the magnetite deposits of the Duluth Gabbro: American Mineralogist, v. 15, p. 243-252. DULUTH COMPLEX; ILMENITE; LAYERED INTRUSION; MAGNETITE; MINERAL DEPOSITS; MINNESOTA; UNITED-STATES;

---, 1936, The geology of the Minneapolis-St. Paul metropolitan area:, Minnesota Geological Survey, Bulletin 27, 267 p. GEOLOGY; MINNESOTA; SUBSURFACE; UNITED-STATES;

---, 1943, Metamorphism of extrusives by basic intrusives in the Keweenawan of Minnesota: Geological Society of America Bulletin, v. 54, p. 1211- 1226. CONTACT METAMORPHISM; DULUTH COMPLEX; LAYERED INTRUSION; MAFIC; MAGMA; METAMORPHISM; MINNESOTA; NORTH SHORE VOLCANIC GROUP; UNITED-STATES; VOLCANIC ROCKS;

---, 1943, Report on magnetic work in southern St. Louis County in 1942: St. Paul, MN, Minnesota Iron Range Resources and Rehabilitation Commission, Report of Investigation No. 1, 20 p. ANIMIKIE GROUP; ANTICLINE; BIWABIK IRON-FORMATION; DULUTH; DULUTH COMPLEX; DULUTH LAYERED SERIES; GEOPHYSICS; IRON-FORMATION; LOWER-PROTEROZOIC; MAGNETIC-SURVEYS; MAGNETICS; MESABI RANGE; MINNESOTA; ST. LOUIS COUNTY; STRUCTURAL-GEOLOGY; THOMSON FORMATION; UNITED- STATES;

---, 1944, Tracing the Duluth gabbro contact with a magnetometer: Economic Geology, v. 39, p. 224-233. ANIMIKIE; ANIMIKIE BASIN; BASAL CONTACT; CONTACT METAMORPHISM; DULUTH COMPLEX; GEOPHYSICS; LAYERED INTRUSION; LOWER-PROTEROZOIC; MAGNETICS; MAGNETOMETER; MINNESOTA; THOMSON FORMATION; UNITED-STATES;

---, 1949, The geology of the Duluth metropolitan area:, Minnesota Geological Survey, Bulletin 33, 136 p. DULUTH; DULUTH COMPLEX; DULUTH LAYERED SERIES; GEOLOGY; LAYERED INTRUSION; MINNESOTA; NORTH SHORE VOLCANIC GROUP; ST. LOUIS COUNTY; UNITED-STATES; VOLCANIC ROCKS;

---, 1958, Geological implications of magnetic and gravity data of the Lake Superior basin [abs.]: 4th Annual Institute on Lake Superior Geology, Duluth, MN, v. 4, p. 7. AEROMAGNETIC SURVEY; AEROMAGNETICS; DULUTH COMPLEX; GEOLOGY; GEOPHYSICS; GRAVITY; LAKE SUPERIOR SYNCLINE; MINNESOTA; ST. LOUIS COUNTY; UNITED-STATES; WISCONSIN;

Schwartz, G. M., and Davidson, D. M., 1952, Geologic setting of the copper-nickel prospect in the Duluth Gabbro near Ely, Minnesota: Mining Engineering, v., p. 699-702. COPPER; DULUTH COMPLEX; ELY; EXPLORATION; LAKE COUNTY; LAYERED INTRUSION; MINNESOTA; NICKEL; PROSPECTING; SOUTH KAWISHIWI INTRUSION; UNITED-STATES;

---, 1952, Geologic setting of a copper-nickel prospect in the Duluth gabbro near Ely, Lake County, Minnesota [abs.]: Economic Geology, v. 47, p. 125. COPPER; DULUTH COMPLEX; ELY; LAKE COUNTY; LAYERED INTRUSION; MINNESOTA; NICKEL; SULFIDE; SULFIDES; UNITED-STATES;

Schwartz, G. M., and Harris, J. M., 1952, Notes on field work in the copper-nickel prospect area, Lake County, Minnesota:, Minnesota Geological Survey, Summary Report 6, 8 p. COPPER; DULUTH COMPLEX; LAKE COUNTY; LAYERED INTRUSION; MINERALIZATION; MINNESOTA; NICKEL; SOUTH KAWISHIWI INTRUSION; SULFIDES; UNITED-STATES;

Schwartz, G. M., and Sandberg, A. E., 1940, Rock series in diabase sills at Duluth, Minnesota: Geological Society of America Bulletin, v. 51, p. 1135- 1172. DIABASE; DULUTH; DULUTH COMPLEX; LAYERED INTRUSION; MINNESOTA; SILLS; ST. LOUIS COUNTY; UNITED-STATES;

Scofield, N., 1976, Mineral chemistry applied to interrelated albitization, pumpellyitization and native copper redistribution in some Portage Lake basalts, Michigan [Ph.D. Dissertation]: Michigan Technological University, Houghton, 144 p. ALBITIZATION; ALTERATION; BASALT; COPPER; MICHIGAN; MICHIGAN COPPER DISTRICT; MINERAL CHEMISTRY; MINERALIZATION; NATIVE COPPER; PORTAGE LAKE VOLCANICS; PUMPELLYITIZATION; UNITED-STATES; UPPER-PENINSULA;

---, 1976, Chemistry of primary and secondary minerals of some Portage Lake Lavas, Keweenaw Peninsula: Development of models of differentiation and low-rank metamorphism [abs.]: 22nd Annual Institute on Lake Superior Geology, St. Paul, MN, v. 22, p. 55. ALTERATION; AMYGDULE; AUGITE; CLINOPYROXENE; CPX; GEOCHEMISTRY; KEWEENAW COUNTY; METAMORPHISM; MICHIGAN; MINERAL CHEMISTRY; PLAGIOCLASE; PORTAGE LAKE VOLCANICS; PREHNITE-PUMPELLYITE FACIES; SCALES CREEK FLOW; UNITED-STATES; UPPER- PENINSULA; VEINS; VOLCANIC ROCKS;

---, 1978, Native copper deposits derived from nearby Keweenawan basalt by combined igneous, deuteric, and metamorphic processes [abs.]: 24th Annual Institute on Lake Superior Geology, Milwaukee, WI, v. 24, p. 32. ALTERATION; COPPER; DEUTERIC; IGNEOUS-PROCESSES; METAMORPHISM; MICHIGAN; MINERAL CHEMISTRY; MINERALIZATION; NATIVE COPPER; ORE-DEPOSITS; ORIGIN; PORTAGE LAKE VOLCANICS; SCALES CREEK FLOW; UNITED-STATES; UPPER-PENINSULA;

151 ---, 1980, Metallic minerals of Silver Islet, Lake Superior [abs.]: 26th Annual Institute on Lake Superior Geology, Eau Claire, WI, v. 26, p. 71. CANADA; CHALCOPYRITE; DIKE; DISTRICT OF THUNDER BAY; DOLOMITE; FAULT; GALENA; GEOCHEMISTRY; GERSDORFFITE; LOWER-PROTEROZOIC; MINERAL CHEMISTRY; MINERALIZATION; NATIVE-SILVER; NICCOLITE; ONTARIO; PYRRHOTITE; ROVE FORMATION; SAFFLORITE; SIBLEY PENINSULA; SILVER; SILVER ISLET; SILVER ISLET MINE; SPHALERITE; STRUCTURAL- GEOLOGY; VEINS;

Scofield, N., and Jorgenson, D. B., 1979, Pink and green albite phenocrysts from the Mohawk Mine, Michigan - Indicators of changes in hydrothermal fluids [abs.]: 25th Annual Institute on Lake Superior Geology, Duluth, MN, v. 25, p. 35. ALBITE; ALBITIZATION; ALTERATION; FLUIDS; GEOCHEMISTRY; HYDROTHERMAL; MICHIGAN; MICHIGAN COPPER DISTRICT; MINERAL CHEMISTRY; MINERALOGY; MOHAWK MINE; PETROGRAPHY; PHENOCRYSTS; PUMPELLYITE; SERICITIZATION; UNITED-STATES; UPPER-PENINSULA;

Scott, G. W., 1971, Investigation of possible fissure copper mineralization east of the Gratiot Mine, Keweenaw County, Michigan [M.S. Thesis]: Michigan Technological University, Houghton, 46 p. COPPER; FISSURE VEIN; GRATIOT MINE; KEWEENAW COUNTY; MICHIGAN; MICHIGAN COPPER DISTRICT; MINE; MINERALIZATION; UNITED-STATES; UPPER-PENINSULA;

Scott, R. W., 1966, New Precambrian(?) formation in Kansas: American Association of Petroleum Geologists Bulletin, v. 50, no. 2, p. 380-384. KANSAS; UNITED-STATES;

Seaman, A. E., and Seaman, W. A., 1944, Geological column Lake Superior region in general:, Michigan Geological Survey Division, Progress Report 10, ARCHEAN; GEOLOGY; LAKE SUPERIOR; LOWER-PROTEROZOIC; MICHIGAN; STRATIGRAPHY; UNITED-STATES; UPPER- PENINSULA;

Seaman, W. A., 1929, Geological and magnetic field work in the Keweenawan of the Michigan copper country: Proceedings of the Lake Superior Mining Institute, v. 27, p. 155-159. COPPER; FAULTS; GEOLOGY; GEOPHYSICS; MAGNETICS; MICHIGAN; MICHIGAN COPPER DISTRICT; SEDIMENTS; STRUCTURAL-GEOLOGY; UNITED-STATES; UPPER-PENINSULA; VOLCANIC ROCKS;

---, 1944, Summary of the geology of the [Mich.], in: Michigan Geological Survey, Progress Report 10, p. 11-17. BESSEMER FORMATION; GEOLOGY; IRON-FORMATION; LOWER-PROTEROZOIC; MARQUETTE IRON RANGE; MARQUETTE RANGE SUPERGROUP; MICHIGAN; UNITED-STATES; UPPER-PENINSULA;

Seasor, R. W., and Brown, A. C., 1986, Syngenetic and diagenetic concepts at White Pine, Michigan [abs.]: Geological Association of Canada/Mineralogical Association of Canada Program with Abstracts, v. 11, p. 126. COPPER; COPPER-ORES; CORES; DIAGENESIS; ECONOMIC GEOLOGY; GENESIS; METAL-ORES; MICHIGAN; MICHIGAN COPPER DISTRICT; MINERAL DEPOSITS; NOD; NONESUCH SHALE; ONTONAGON-COUNTY; ORONTO-GROUP; SEDIMENTARY-ROCKS; SEDIMENTS; STRATIFORM-DEPOSITS; SULFIDES; SYNGENETIC; UNITED-STATES; UPPER-PENINSULA; WEATHERING; WHITE PINE MINE;

---, 1989, Syngenetic and diagenetic concepts at the White Pine copper deposit, Michigan, in Boyle, R. W., Brown, R. W., Jefferson, A. C., Jowett, C. W., and Kirkham, R. V., eds., Sediment-hosted stratiform copper deposits:, Geological Association of Canada, Special Paper 36, p. 257-267. BAYFIELD-GROUP; COPPER; COPPER HARBOR CONGLOMERATE; COPPER-ORES; DIAGENESIS; ECONOMIC GEOLOGY; FREDA- SANDSTONE; GENESIS; JACOBSVILLE-SANDSTONE; MICHIGAN; MICHIGAN COPPER DISTRICT; MINERAL DEPOSITS; MINERALIZATION; NONESUCH SHALE; ONTONAGON-COUNTY; ORONTO-GROUP; PORTAGE LAKE VOLCANICS; SANDSTONE; SEDIMENTARY-ROCKS; SEDIMENTS; SYNGENETIC; UNITED-STATES; UPPER-PENINSULA; WHITE PINE MINE;

Seeland, D. A., 1973, A geochemical reconnaissance for gold in the sedimentary rocks in the Great Lakes region, Minnesota to New York:, U. S. Geological Survey, Bulletin 305, 16 p. ADIRONDACK MOUNTAINS; BARRON-QUARTZITE; BAYFIELD-GROUP; COOK COUNTY; COPPER HARBOR CONGLOMERATE; DECORAH SHALE; DOUGLAS-COUNTY; DRESBACH GROUP; EXPLORATION; FOND DU LAC FORMATION; FRANCONIA SANDSTONE; GEOCHEMISTRY; GLENWOOD FORMATION; GOLD; GOODRICH QUARTZITE; GREAT LAKES; HINCKLEY-SANDSTONE; ILLINOIS; IOWA; JACOBSVILLE-SANDSTONE; JORDAN SANDSTONE; KENTUCKY; LOWER PENINSULA; LOWER-PROTEROZOIC; MAQUOKETA FORMATION; MICHIGAN; MINNESOTA; MISSOURI; MUNISING-FORMATION; NEW YORK; OHIO; ORONTO-GROUP; PALEOZOIC; PALMS-QUARTZITE; PENNSYLVANIA; PHANEROZOIC; PLACERS; PUCKWUNGE FORMATION; SEDIMENTARY-ROCKS; ST. LAWRENCE FORMATION; ST. PETER SANDSTONE; THOMSON FORMATION; UNITED- STATES; UPPER-PENINSULA; VIRGINIA; WISCONSIN;

Seglund, J. A., 1989, Midcontinent Rift continues to show promise as petroleum prospect: Oil and Gas Journal, v. 87, no. 20, p. 55-58. ECONOMIC GEOLOGY; EXPLORATION; IOWA; JACOBSVILLE-BASIN; KANSAS; MICHIGAN; MINNESOTA; NATURAL-GAS; NEBRASKA; NONESUCH SHALE; ORONTO-GROUP; PETROLEUM; POSSIBILITIES; SEDIMENTARY-ROCKS; SEDIMENTS; UNITED-STATES; WISCONSIN;

Seguin, M. K., 1972, Discovery of important reserves of copper and nickel sulfides in the Duluth Gabbro, northeastern Minnesota: Naturaliste Canadien, v. 99, p. 49-58. COPPER; DULUTH COMPLEX; ELECTROMAGNETIC-SURVEYS; EXPLORATION; GEOPHYSICS; GRAVITY; INDUCED POLARIZATION; LAKE COUNTY; LAYERED INTRUSION; MINERAL DEPOSITS; MINNESOTA; NICKEL; ORE RESERVES; SELF-POTENTIAL SURVEYS; SOUTH FILSON CREEK; SOUTH KAWISHIWI INTRUSION; SULFIDES; UNITED-STATES;

Seifert, K. E., 1984, Trace element geochemistry of some Lake Superior Keweenawan basic layered intrusions [abs.]: 30th Annual Institute on Lake Superior Geology, Wausau, WI, v. 30, p. 68. GEOCHEMISTRY; MAFIC; MELLEN COMPLEX; UNITED-STATES; WISCONSIN;

Seifert, K. E., and Brunfelt, A. O., 1982, REE composition of Duluth Gabbro rocks [abs.]: Eos (American Geophysical Union Transactions), v. 63, p. 615. DULUTH COMPLEX; GEOCHEMISTRY; LAYERED INTRUSION; MINNESOTA; RARE-EARTH ELEMENTS; REE; UNITED- STATES;

152 Seifert, K. E., and Kracher, A., 1992, Rock-magma mixing in the Duluth Complex, Enger Hill, Duluth: Part 1 - Bulk composition [abs.]: Eos (American Geophysical Union Transactions), v. 73, no. 43, p. 655. ANORTHOSITIC SERIES; DULUTH; DULUTH COMPLEX; ENGER HILL; ENGER TOWER; GEOCHEMISTRY; LAYERED INTRUSION; MAGMA MIXING; MINNESOTA; ST. LOUIS COUNTY; UNITED-STATES; WHOLE ROCK ANALYSES;

Seifert, K. E., Peterman, Z. E., and Thieben, S. E., 1992, Possible crustal contamination of Midcontinent Rift igneous rocks: Examples from the Mineral Lake intrusions, Wisconsin: Canadian Journal of Earth Sciences, v. 29, p. 1140-1153. 87SR/86SR; CRUSTAL CONTAMINATION; FRACTIONAL CRYSTALLIZATION; GEOCHEMISTRY; MELLEN COMPLEX; MINERAL LAKE INTRUSION; NEODYMIUM ISOTOPES; RADIOGENIC ISOTOPES; RARE-EARTH ELEMENTS; REE; RUBIDIUM-STRONTIUM; SAMARIUM-NEODYMIUM; TRACE ELEMENT ANALYSES; UNITED-STATES; WHOLE ROCK ANALYSES; WISCONSIN;

Seifert, K. E., Peterman, Z. E., and Windom, K. E., 1985, Mineral Lake layered intrusion, NW Wisconsin [abs.]: Geological Society of America Abstracts with Programs, v. 17, p. 712. MELLEN COMPLEX; MINERAL LAKE INTRUSION; UNITED-STATES; WISCONSIN;

Seitz, J. C., and Pasteris, J., 1988, Oxide and sulfide mineralization at the base of the Duluth Complex -- Skibo Tower, Minnesota [ext. abs.]. 5th Annual Current Activities Forum, Chisholm, MN, Minnesota Department of Natural Resources, Division of Minerals, Hibbing, MN COPPER; DULUTH COMPLEX; GEOCHEMISTRY; ILMENITE; LAYERED INTRUSION; MAGNETITE; MINERALIZATION; MINNESOTA; NICKEL; ORE DEPOSIT; OXIDE; OXIDE-BEARING ULTRAMAFIC INTRUSION; SKIBO; SULFIDES; TITANIUM; UNITED-STATES;

Seitz, J. C., Pasteris, J. D., and Chou, I.-M., 1989, Quantitative composition and density determinations of CH4-N2-bearing fluid inclusions by Raman micro-spectroscopy [abs.]: Geological Society of America Abstracts with Programs, v. 21, no. 6, p. A358. CH4; DULUTH COMPLEX; FLUID INCLUSIONS; FREEZING TEMPERATURE; LAYERED INTRUSION; METHANE; MICROTHERMOMETRIC; MINNESOTA; N2; NITROGEN; PRESSURE; RAMAN MICROSPECTROSCOPY; TEMPERATURE; UNITED-STATES;

Sellery, G. B., 1924, Some aspects of the structure of the Keweenawan Series in the vicinity northwest of Mellen, Wisconsin [B.A. Thesis]: University of Wisconsin, Madison, 31 p. PROTEROZOIC; STRUCTURAL-GEOLOGY; UNITED-STATES; WISCONSIN;

Sellner, J. M., Lawler, T. L., Dahlberg, E. H., Frey, B. A., and McKenna, M. P., 1985, 1984-1985 geodrilling report:, Minnesota Department of Natural Resources, Division of Minerals, Report 242, 75 p. DRILLING; DULUTH COMPLEX; GEOCHEMISTRY; LAYERED INTRUSION; MINNESOTA; UNITED-STATES;

Selwyn, A. R. C., 1883, Age of rocks on the northern shore of Lake Superior: Science, v. 1, p. 11. AGE; CANADA; DISTRICT OF ALGOMA; DISTRICT OF THUNDER BAY; ONTARIO; SANDSTONE; SEDIMENTARY-ROCKS; VOLCANIC ROCKS;

---, 1883, The copper-bearing rocks of Lake Superior: Science, v. 1, p. 221. CANADA; COPPER; DISTRICT OF ALGOMA; DISTRICT OF THUNDER BAY; MINERALIZATION; ONTARIO; PROTEROZOIC;

Sendlein, L. V. A., and Staub, W. P., 1969, Seismic refraction survey of the Ames anticline [abs.]: 15th Annual Institute on Lake Superior Geology, Oshkosh, WI, v. 15, p. 34. AMES ANTICLINE; GEOPHYSICS; HORSTS; IOWA; REFRACTION; SEISMIC; SEISMIC-SURVEYS; STRUCTURAL-GEOLOGY; UNITED-STATES;

Senftle, F. E., Moxham, R. M., Tanner, A. B., Philbin, P. W., Boynton, G. R., and Wager, R. E., 1977, Importance of neutron energy distribution in borehole activation analysis in relatively dry, low-porosity rocks: Geoexploration, v. 15, p. 121-135. BASE METAL ANALYSES; BOREHOLE; CHALCOPYRITE; CUBANITE; DDH 40921; DOWNHOLE; DRILL HOLE; DULUTH COMPLEX; GEOCHEMISTRY; GEOPHYSICS; LAKE COUNTY; LAYERED INTRUSION; MINERALIZATION; MINNESOTA; NEUTRON ACTIVATION ANALYSIS; PEGMATITE; PENTLANDITE; SULFIDES; TRACE ELEMENT ANALYSES; UNITED-STATES; VIOLARITE; WHOLE ROCK ANALYSES;

Senftle, F. E., Moxham, R. M., Tanner, A. B., and Wager, R. E., 1975, Test of neutron-activation methods in boreholes using a high-resolution detector near Ely, Minnesota [abs.]: Geophysics, v. 40, p. 155. ANALYTICAL TECHNIQUES; BOREHOLE; COPPER; DRILL HOLE; DULUTH COMPLEX; ELY; GEOCHEMISTRY; GEOPHYSICS; INCO; LAKE COUNTY; LAYERED INTRUSION; MINERAL DEPOSIT; MINERALIZATION; MINNESOTA; NAA; NEUTRON ACTIVATION ANALYSIS; NICKEL; SOUTH KAWISHIWI INTRUSION; SPRUCE ROAD; SULFIDES; UNITED-STATES; WHOLE ROCK ANALYSES;

Serpa, L., Setzer, T., and Brown, L., 1989, COCORP seismic-reflection profiling in northeastern Kansas: Kansas Geological Survey Bulletin, v. 226, p. 165-176. COCORP; GEOPHYSICS; KANSAS; REFLECTION; SEISMIC; SEISMIC-SURVEYS; UNITED-STATES;

Serpa, L., Setzer, T., Farmer, H., Brown, L., Oliver, J., Kaufman, S., Sharp, J., and Steeples, D. W., 1984, Structure of the southern Keweenawan Rift from COCORP surveys across the Midcontinent Geophysical Anomaly in northeastern Kansas: Tectonics, v. 3, p. 367-384. COCORP; GEOPHYSICS; KANSAS; SEISMIC; SEISMIC-SURVEYS; STRUCTURAL-GEOLOGY;

Severson, M., 1988, Geology and structure of a portion of the Partridge River intrusion: A progress report:, Natural Resources Research Institute, University of Minnesota, Duluth, Technical Report NRRI/GMIN-TR-88-08, 78 p. BABBITT; COPPER; DULUTH COMPLEX; DUNKA ROAD; GEOLOGY; LAYERED INTRUSION; MINERAL DEPOSIT; MINERALIZATION; MINNAMAX; MINNESOTA; NICKEL; NRRI; ORE DEPOSIT; PARTRIDGE RIVER; PARTRIDGE RIVER INTRUSION; PARTRIDGE RIVER TROCTOLITE SERIES; ST. LOUIS COUNTY; STRATIGRAPHY; STRUCTURAL-GEOLOGY; SULFIDE; SULFIDES; UNITED-STATES; WETLEGS;

Severson, M., and Hauck, S., 1990, Geochemistry of unmineralized rocks in the Partridge River intrusion, Duluth Complex [abs.]: 36th Annual Institute on Lake Superior Geology, Thunder Bay, ONT, v. 36, p. 100-101. BASE METALS; DULUTH COMPLEX; GEOCHEMISTRY; LAYERED INTRUSION; MAJOR ELEMENTS; MINNESOTA; MINOR ELEMENTS; ORIGIN; PARTRIDGE RIVER; PARTRIDGE RIVER INTRUSION; PRECIOUS METALS; RARE-EARTH ELEMENTS; REE; TRACE ELEMENTS ANALYSES; UNITED-STATES;

153 ---, 1990, Geology, geochemistry and stratigraphy of a portion of the Partridge River intrusion:, Natural Resources Research Institute, University of Minnesota, Duluth, Technical Report NRRI/GMIN-TR-89-11, 230 p. ANIMIKIE; ANIMIKIE GROUP; BABBITT; BASE METAL ANALYSES; COLVIN CREEK; COPPER; DULUTH COMPLEX; DUNKA ROAD; GEOCHEMISTRY; GEOLOGY; HORNFELS; ILMENITE; LAYERED INTRUSION; LONGEAR; LONGNOSE; LOWER-PROTEROZOIC; MAGNETITE; MAJOR ELEMENT ANALYSES; MINERAL DEPOSIT; MINERALIZATION; MINNAMAX; MINNESOTA; MINOR ELEMENTS ANALYSES; NICKEL; NRRI; ORE DEPOSIT; OUIS; OXIDE; OXIDE- BEARING ULTRAMAFIC INTRUSION; PARTRIDGE RIVER; PARTRIDGE RIVER INTRUSION; PARTRIDGE RIVER TROCTOLITE SERIES; POWERLINE GABBRO; PRECIOUS METALS; RARE-EARTH ELEMENTS; REE; SECTION 17; SEDIMENTARY-ROCKS; SEDIMENTS; SKIBO; ST. LOUIS COUNTY; STRATIGRAPHY; SULFIDE; SULFIDES; TRACE ELEMENTS ANALYSES; TROCTOLITE; UNITED-STATES; VIRGINIA FORMATION; VOLCANIC; WETLEGS;

---, 1991, Correlation of igneous units at the Minnamax deposit, NE Minnesota [abs.]: 37th Annual Institute on Lake Superior Geology, Eau Claire, WI, v. 37, p. 89-91. BABBITT; COPPER; DULUTH COMPLEX; LAYERED INTRUSION; MINERAL DEPOSIT; MINERALIZATION; MINNAMAX; MINNESOTA; NICKEL; ORE DEPOSIT; PARTRIDGE RIVER; PARTRIDGE RIVER INTRUSION; ST. LOUIS COUNTY; STRATIGRAPHY; SULFIDE; SULFIDES; UNITED-STATES;

Severson, M. J., 1991, Geology, mineralization, and geostatistics of the Minnamax/Babbitt Cu-Ni deposit (Local Boy area), Minnesota, Part I: Geology:, Natural Resources Research Institute, University of Minnesota, Duluth, Technical Report NRRI/TR-91/13a, 96 p. BABBITT; BASE METAL ANALYSES; COPPER; DULUTH COMPLEX; GEOCHEMISTRY; GEOLOGY; LAYERED INTRUSION; LOCAL BOY; MAJOR ELEMENTS; MINERAL CHEMISTRY; MINERAL DEPOSIT; MINERALIZATION; MINNAMAX; MINNESOTA; MINOR ELEMENTS; NICKEL; NRRI; ORE DEPOSIT; OXIDE; PARTRIDGE RIVER INTRUSION; PETROLOGY; PGE; PLATINUM-GROUP ELEMENTS; PRECIOUS METALS; RARE-EARTH ELEMENTS; REE; SEDIMENTS; SILLS; ST. LOUIS COUNTY; STRATIGRAPHY; SULFIDE; SULFIDES; TIGER BOY; TRACE ELEMENTS ANALYSES; UNITED-STATES; WHOLE ROCK ANALYSES;

---, 1992, Sulfide and PGE mineralization at the basal contact of the Minnamax deposit, Duluth Complex, Minnesota [abs.]: 38th Annual Institute on Lake Superior Geology, Hurley, WI, v. 38, p. 87-89. ANIMIKIE; ANIMIKIE GROUP; BABBITT; COPPER; DULUTH COMPLEX; LAYERED INTRUSION; LOCAL BOY; LOWER-PROTEROZOIC; MINERAL DEPOSIT; MINERALIZATION; MINNAMAX; MINNESOTA; NICKEL; ORE DEPOSIT; ORIGIN; PARTRIDGE RIVER INTRUSION; PGE; PLATINUM-GROUP ELEMENTS; SEDIMENTARY-ROCKS; ST. LOUIS COUNTY; SULFIDE; SULFIDES; TIGER BOY; UNITED-STATES; VIRGINIA FORMATION;

---, 1993, Igneous stratigraphy of the Partridge River and South Kawishiwi intrusions - Duluth Complex, northeastern Minnesota [abs.]: 39th Annual Institute on Lake Superior Geology, Eveleth, MN, v. 39, p. 70-71. ANIMIKIE; ANIMIKIE GROUP; ARCHEAN; ASSIMILATION; BIWABIK IRON-FORMATION; GIANTS RANGE BATHOLITH; GRANITE; IRON-FORMATION; LAKE COUNTY; LOWER-PROTEROZOIC; MINNESOTA; OUIS; OXIDE-BEARING ULTRAMAFIC INTRUSION; PARTRIDGE RIVER INTRUSION; PARTRIDGE RIVER TROCTOLITE SERIES; SEDIMENTARY-ROCKS; SOUTH KAWISHIWI INTRUSION; SOUTH KAWISHIWI TROCTOLITE SERIES; ST. LOUIS COUNTY; STRATIGRAPHY; UNITED-STATES; VIRGINIA FORMATION;

---, 1994, Igneous stratigraphy of the South Kawishiwi Intrusion, Duluth Complex, northeastern Minnesota: Duluth, Natural Resources Research Institute, University of Minnesota, Duluth, Technical Report NRRI/TR-93/34, 210 p. ANIMIKIE; ANIMIKIE GROUP; ARCHEAN; ASSIMILATION; BABBITT; BASE METAL ANALYSES; BEDDED PYRRHOTITE UNIT; BIRCH LAKE; BIWABIK IRON-FORMATION; COPPER; DRILL HOLE; DULUTH COMPLEX; DUNKA PIT; FAULTS; FOOTWALL; GEOCHEMISTRY; GIANTS RANGE BATHOLITH; GRANITE; GRANO FAULT; HYDROTHERMAL; IRON-FORMATION; LAKE COUNTY; LAYERED INTRUSION; LOWER-PROTEROZOIC; MAFIC; MAJOR ELEMENT ANALYSES; MATURI; METASOMATISM; MINERAL DEPOSIT; MINERALIZATION; MINNAMAX; MINNESOTA; MINOR ELEMENT ANALYSES; NICKEL; NRRI; OUIS; OXIDE-BEARING ULTRAMAFIC INTRUSION; PARTRIDGE RIVER INTRUSION; PETER MITCHELL; PETROGRAPHY; PGE; PLATINUM-GROUP ELEMENTS; PRECIOUS METAL ANALYSES; RARE-EARTH ELEMENTS; REE; SEDIMENTARY-ROCKS; SOUTH FILSON CREEK; SOUTH KAWISHIWI INTRUSION; SPRUCE ROAD; ST. LOUIS COUNTY; STABLE-ISOTOPES; STRATIGRAPHY; STRUCTURAL-GEOLOGY; SULFIDES; SULFUR ISOTOPES; TRACE ELEMENT ANALYSES; ULTRAMAFIC; UNITED-STATES; VIRGINIA FORMATION; WHOLE ROCK ANALYSES;

---, 1995, Geology of the southern portion of the Duluth Complex [abs.]: 41st Annual Institute on Lake Superior Geology, Marathon, ONT, v. 41, p. 66-67. CHROMIUM; COPPER; DISSEMINATED ORE; DRILL HOLE SURVEY; DULUTH COMPLEX; FAULTS; GEOCHEMISTRY; GEOLOGY; GRAPHITE; ILMENITE; MINNESOTA; NICKEL; OUIS; OXIDE-BEARING ULTRAMAFIC INTRUSION; OXIDES; SOUTH COMPLEX AREA; ST. LOUIS COUNTY; STRATIGRAPHY; STRUCTURAL-GEOLOGY; SULFIDES; TITANIUM; UNITED-STATES; VANADIUM; WATER HEN; WHITEFACE RESERVOIR; WYMAN CREEK;

Severson, M. J., and Barnes, R. J., 1991, Geology, mineralization, and geostatistics of the Minnamax/Babbitt Cu-Ni deposit (Local Boy area), Minnesota, Part II: Mineralization and geostatistics:, Natural Resources Research Institute, University of Minnesota, Duluth, Technical Report NRRI/TR-91/13b, 221 p. BABBITT; BASE METAL ANALYSES; BORNITE; CHALCOCITE; CHALCOPYRITE; COPPER; CUBANITE; DULUTH COMPLEX; GEOCHEMISTRY; GEOLOGY; GEOSTATISTICS; GOLD; HERCYNITE; LAYERED INTRUSION; LOCAL BOY; MAGNETITE; MINERAL CHEMISTRY; MINERAL DEPOSIT; MINERALIZATION; MINNAMAX; MINNESOTA; NICKEL; NRRI; ORE DEPOSIT; PARTRIDGE RIVER INTRUSION; PETROLOGY; PGE; PLATINUM-GROUP ELEMENTS; PRECIOUS METALS; PYRRHOTITE; SILVER; SPHALERITE; SPINEL; ST. LOUIS COUNTY; SULFIDE; SULFIDES; TALNAKHITE; TIGER BOY; UNITED-STATES;

Severson, M. J., Patelke, R. L., Hauck, S. A., and Zanko, L. M., 1994, The Babbitt copper-nickel deposit, Part B: Structural datums:, Natural Resources Research Institute, University of Minnesota, Duluth, Technical Report NRRI/TR-94/21B, 48 p. BABBITT; BATHTUB; COPPER; DIKES; DRILL HOLE; DULUTH COMPLEX; FAULTS; FOLDING; GRANO FAULT; LAYERED INTRUSION; LOCAL BOY; MINERAL DEPOSIT; MINNAMAX; MINNESOTA; NICKEL; NRRI; OVERBURDEN; PARTRIDGE RIVER INTRUSION; SOUTH KAWISHIWI INTRUSION; SOUTHWEST EXTENSION; ST. LOUIS COUNTY; STRUCTURAL-GEOLOGY; THICKNESS; TIGER BOY; UNITED-STATES; UPDIP BATHTUB;

154 Sexton, J. L., and Henson, H., 1994, Interpretation of seismic reflection and gravity profile data in western Lake Superior: Canadian Journal of Earth Sciences, v. 31, no. 4, p. 652-660. ACCOMMODATION ZONE; ALLOUEZ BASIN; ANIMIKIE GROUP; ARCHEAN; BASEMENT; BAYFIELD- GROUP; BOUGUER-ANOMALIES; CLASTICS; DETACHMENT FAULTS; DOUGLAS-FAULT; FAULTS; GEOPHYSICS; GLIMPCE; GNI/ARGONNE LINE 12; GNI/ARGONNE LINE 18; GNI/ARGONNE LINE 25; GNI/ARGONNE LINE 43; GNI/ARGONNE LINE 45; GNI/ARGONNE LINE 47; GNI/ARGONNE LINE 53; GNI/ARGONNE LINE 57; GNI/ARGONNE LINE 8; GRANT-NORPAC; GRAVITY; GRAVITY-ANOMALIES; ISLE ROYALE FAULT; JACOBSVILLE-SANDSTONE; KEWEENAW FAULT; LAKE SUPERIOR; LOWER- PROTEROZOIC; MARQUETTE BASIN; MICHIGAN; MINNESOTA; MODEL; MODELLING; NORMAL-FAULTS; NORTH SHORE VOLCANIC GROUP; OJIBWA FAULT; ORONTO-GROUP; PORTAGE LAKE VOLCANICS; PROFILES; REFLECTION; REVERSE-FAULTS; RIFT BASIN; SANDSTONE; SEDIMENTARY-ROCKS; SEISMIC; SEISMIC LINE A; SEISMIC LINE C; STRUCTURAL-GEOLOGY; UNITED- STATES; UPPER-PENINSULA; VOLCANIC ROCKS; WHITE'S RIDGE;

Sexton, J. L., and Henson, H., Jr., 1992, Seismic reflection and gravity profile models of data from Lake Superior [abs.]: Eos (American Geophysical Union Transactions), v. 73, no. 14, p. 320. BAYFIELD-GROUP; DOUGLAS-FAULT; FAULTS; GEOPHYSICS; GLIMPCE; GRAVITY; ISLE ROYALE FAULT; KEWEENAW FAULT; LAKE SUPERIOR; MICHIGAN; MODELS; ORONTO-GROUP; PORTAGE LAKE VOLCANICS; REFLECTION; REVERSE-FAULTS; RIFT BASIN; SEDIMENTARY-ROCKS; SEISMIC; STRUCTURAL-GEOLOGY; UNITED-STATES; UPPER-PENINSULA;

Shah, I. D., Ruzzi, P. L., and Schluter, R. B., 1983, Low-iron Cu-Ni-Co matte from Duluth Complex sulfide concentrate by direct smelting:, U. S. Bureau of Mines, Report of Investigations 8752, BENEFICIATION; COBALT; COPPER; DESULFURIZATION; DIRECT SMELTING; DULUTH COMPLEX; EXPERIMENTAL STUDIES; IRON; LAYERED INTRUSION; MATTE; METALLURGY; MINERAL PROCESSING; MINNESOTA; NICKEL; SMELTING; TEMPERATURE; UNITED-STATES;

Shah, I. D., Schluter, R. B., and Mahan, W. M., 1976, Laboratory preparation and structure o low iron Cu-Ni matte from Duluth Complex, in Proceedings of the 37th Annual Mining Symposium:, University of Minnesota, Minneapolis, Paper 25, p. 27. BENEFICIATION; COPPER; DULUTH COMPLEX; LAYERED INTRUSION; MATTE; METALLURGY; MINERAL PROCESSING; MINNESOTA; NICKEL; UNITED- STATES;

Shah, I. D., Schulter, R. B., and Mahan, W. M., 1976, Preparation and structure of low-iron Cu-Ni matte from Duluth Complex concentrate. 37th Annual Mining Symposium, University of Minnesota, Minneapolis BENEFICIATION; DULUTH COMPLEX; LAYERED INTRUSION; MINERAL PROCESSING; MINNESOTA; UNITED-STATES;

Shank, S. G., 1989, The petrology of the Beaver Bay Complex near Silver Bay, northeastern Minnesota [M.S. Thesis]: University of Minnesota, Minneapolis, 127 p. BEAVER BAY COMPLEX; DULUTH COMPLEX; LAKE COUNTY; LAYERED INTRUSION; MINNESOTA; PETROLOGY; SILVER BAY; UNITED-STATES;

Sharma, B., 1964, The vertical gradient of gravity in gravitational interpretation [M.S. Thesis]: University of Minnesota, Minneapolis, 225 p. ANOKA COUNTY; CHISAGO-COUNTY; DOUGLAS-FAULT; FAULTS; GEOPHYSICS; GRAVITY; GRAVITY-SURVEYS; ISANTI COUNTY; MINNESOTA; PINE-COUNTY; SEDIMENTARY-ROCKS; STRUCTURAL-GEOLOGY; UNITED-STATES; VOLCANIC ROCKS; WASHINGTON-COUNTY;

Shaw, C. J. S., 1994, Petrogenesis of the Eastern Gabbro, Coldwell Alkaline Complex, Ontario [Ph.D. Thesis]: University of Western Ontario, London, Ontario, Canada, 292 p. ALKALIC COMPLEX; ALKALINE; ALKALINE INTRUSION; CANADA; COLDWELL COMPLEX; DISTRICT OF THUNDER BAY; EASTERN GABBRO; GENESIS; ONTARIO; PETROGENESIS; PETROLOGY; PORT COLDWELL; PROTEROZOIC;

Shaw, C. S. J., 1992, Geology and mineralization of the eastern gabbro, Port Coldwell alkaline complex, Ontario [abs.]: Abstracts, Ontario Mines and Minerals Symposium 1992, p. 56. ALKALIC COMPLEX; ALKALINE; ALKALINE INTRUSION; CANADA; COLDWELL COMPLEX; DISTRICT OF THUNDER BAY; EASTERN GABBRO; GEOLOGY; MINERAL DEPOSITS; MINERALIZATION; ONTARIO; PORT COLDWELL; PROTEROZOIC;

---, 1995, Geochemistry and fractionation of the Eastern Gabbro, Coldwell Alkaline Complex [abs.]: 41st Annual Institute on Lake Superior Geology, Marathon, ONT, v. 41, p. 68-69. ALKALIC COMPLEX; ALKALINE; ALKALINE INTRUSION; CANADA; COLDWELL COMPLEX; CRYSTALLIZATION; DISTRICT OF THUNDER BAY; EASTERN GABBRO; FRACTIONATION; GEOCHEMISTRY; IGNEOUS-PROCESSES; ONTARIO; PORT COLDWELL; PROTEROZOIC;

Shaw, E. G., 1984, Dikes as tectonic indicators in the eastern Lake Superior region - Structural and paleomagnetic considerations [abs.]: 30th Annual Institute on Lake Superior Geology, Wausau, WI, v. 30, p. 69-70. ABITIBI DIKES; ARCHEAN; CANADA; DEFORMATION; DIKES; DISTRICT OF ALGOMA; FAULTS; GEOPHYSICS; KAPUSKASING STRUCTURAL ZONE; MATACHEWAN DIKES; MONTREAL RIVER FAULT; MONTREAL-RIVER; ONTARIO; PALEOMAGNETIC POLE; PALEOMAGNETISM; PREISSAC DIKES; ROTATION; SHEAR ZONES; STRUCTURAL-GEOLOGY; SUDBURY DIKES;

---, 1985, Precambrian dykes in the eastern Lake Superior region and their use in defining crustal rotation [M.Sc. Thesis]: University of Toronto, Ontario, Canada, 162 p. CANADA; DIKES; DISTRICT OF ALGOMA; GEOPHYSICS; ONTARIO; PALEOMAGNETISM; PROTEROZOIC;

Shay, J. T., and Trehu, A. M., 1989, Structure of the Midcontinent Rift beneath Lake Superior [abs.]: Eos (American Geophysical Union Transactions), v. 70, p. 274. CANADA; FAULTS; GEOPHYSICS; GLIMPCE; GRABENS; INTERFLOW SEDIMENTS; ISLE ROYALE FAULT; LAKE SUPERIOR; MODELLING; ONTARIO; REFLECTION; SEDIMENTARY-ROCKS; SEISMIC; SEISMIC LINE A; SEISMIC-SURVEYS; STRUCTURAL-GEOLOGY; UNITED-STATES; VELOCITY; VOLCANIC ROCKS; WIDE ANGLE;

155 Sherlock, R. L., and Kissin, S. A., 1989, A study of the third dimension in the Thunder Bay silver veins: Fluid inclusion and stable isotope results: Geological Association of Canada/Mineralogical Association of Canada Program with Abstracts, v. 14, p. A121-A122. ANIMIKIE; BASINAL- TYPE BRINE; BRINES; CANADA; CARBON ISOTOPES; DIABASE; DISTRICT OF THUNDER BAY; FLUID INCLUSIONS; GUNFLINT FORMATION; KEYSTONE MINE; LOWER-PROTEROZOIC; METEORIC; ONTARIO; PORCUPINE MINE; ROVE FORMATION; SALINITY; SHUNIAH MINE; SILLS; SILVER; STABLE-ISOTOPES; TEMPERATURE; THUNDER BAY; VEINS;

Shih, X. R., and Meyer, R. P., 1989, Shear-wave characteristics along the A-A' refraction profile in GLIMPCE project [abs.]: Eos (American Geophysical Union Transactions), v. 70, no. 15, p. 273. CANADA; COMPRESSIONAL WAVE; GEOPHYSICS; GLIMPCE; LAKE SUPERIOR; ONTARIO; REFRACTION; SEISMIC; SEISMIC-SURVEYS; SHEAR WAVE; UNITED-STATES; VELOCITY;

Shirey, S. B., Klewin, K. W., Berg, J. H., and Carlson, R. W., 1994, Temporal changes in the sources of flood basalts: Isotopic and trace element evidence from the 1100 Keweenawan Mamainse Point Formation, Ontario, Canada: Geochimica et Cosmochimica Acta, v. 58, no. 20, p. 4475-4490. ASTHENOSPHERE; ASTHENOSPHERIC MANTLE; CANADA; DEPLETED MANTLE; DISTRICT OF ALGOMA; EVOLUTION; FLOOD BASALTS; GEOCHEMISTRY; ISOTOPES; LEAD ISOTOPES; LITHOSPHERE; LITHOSPHERIC MANTLE; MAGMATIC; MAJOR ELEMENT ANALYSES; MAMAINSE POINT; MAMAINSE POINT FORMATION; MANTLE; MINOR ELEMENT ANALYSES; MODEL; NEODYMIUM ISOTOPES; ONTARIO; PETROGENESIS; PLUME; RADIOGENIC ISOTOPES; RARE-EARTH ELEMENTS; REE; TRACE ELEMENTS ANALYSES; WHOLE ROCK ANALYSES;

Shoja-Taheri, J., 1970, Geophysical investigation along National Forest Highway 16, Houghton and Ontonagon Counties, Michigan [M.S. Thesis]: Michigan Technological University, Houghton GEOPHYSICS; HOUGHTON-COUNTY; MICHIGAN; ONTONAGON-COUNTY; UNITED- STATES; UPPER-PENINSULA;

Shore, G. T., 1992, Geology of the Coldwell Peninsula area, Port Coldwell alkalic complex, Ontario [abs.]: Abstracts, Ontario Mines and Minerals Symposium 1992, p. 57. ALKALIC COMPLEX; ALKALINE; ALKALINE INTRUSION; CANADA; COLDWELL COMPLEX; COLDWELL PENINSULA; DISTRICT OF THUNDER BAY; GEOLOGY; ONTARIO; PORT COLDWELL; PROTEROZOIC;

Shrake, D. L., 1989, How deep is the crystalline Precambrian basement in northeastern Warren County, Ohio? [abs.]: Geological Society of America Abstracts with Programs, v. 21, no. 4, p. 47. MIDDLE RUN FORMATION; OHIO; UNITED-STATES; WARREN COUNTY;

---, 1991, The Middle Run Formation: A new stratigraphic unit in the subsurface of southwestern Ohio: Ohio Journal of Science, v. . in press MIDDLE RUN FORMATION; OHIO; SEDIMENTARY-ROCKS; SEDIMENTS; STRATIGRAPHY; UNITED-STATES;

Shrake, D. L., Carlton, R. W., Wickstrom, L. H., Potter, P. E., Richard, B. H., Wolfe, P. J., and Sitler, G. W., 1991, Pre-Mount Simon basin under the Cincinnati Arch: Geology, v. 19, p. 139-142. BOONE COUNTY; BOREHOLE; CAMPBELL COUNTY; CINCINNATI ARCH; GEOPHYSICS; GRENVILLE-FRONT; INDIANA; JACOBSVILLE-SANDSTONE; KENTUCKY; MICHIGAN; MIDDLE RUN FORMATION; MINNESOTA; MT. SIMON SANDSTONE; OHIO; ORONTO-GROUP; RED CLASTICS; SANDSTONE; SEDIMENTARY-ROCKS; SEDIMENTS; SEISMIC; SEISMIC-SURVEYS; SOLOR CHURCH FORMATION; SWITZERLAND COUNTY; UNITED-STATES; WARREN COUNTY; WISCONSIN;

Shrake, D. L., and Hansen, M. C., 1989, Warren County deep hole: Ohio Geological Survey, Ohio Geology Newsletter, Summer 1989, p. 1-3. MIDDLE RUN FORMATION; OHIO; PALEOZOIC; SEDIMENTARY-ROCKS; SEDIMENTS; UNITED-STATES; WARREN COUNTY;

Shrake, D. L., Wolfe, P. J., Richard, B. H., Swinford, E. M., Wickstrom, L. H., Potter, P. E., and Sitler, G. W., 1990, Lithologic and geophysical description of a continuously cored hole in Warren County, Ohio, including description of the Middle Run Formation (Precambrian ?) and a seismic profile across core site:, Ohio Geological Survey, Information Circular 56, 11 p. GEOPHYSICS; LITHOLOGY; MIDDLE RUN FORMATION; OHIO; PALEOZOIC; PHANEROZOIC; SEDIMENTARY-ROCKS; SEDIMENTS; SEISMIC; SEISMIC-SURVEYS; UNITED-STATES; WARREN COUNTY;

Sibley, D. F., 1978, K-feldspar cement in the Jacobsville Sandstone: Journal of Sedimentary Petrology, v. 48, no. 3, p. 983-985. AUTHIGENIC; CALUMET; CAMBRIAN; CEMENT; CLASTIC-ROCKS; DIAGENESIS; FELDSPAR-GROUP; FRAMEWORK-SILICATES; JACOBSVILLE- SANDSTONE; K-FELDSPAR; MATERIALS; MICHIGAN; PALEOZOIC; PHANEROZOIC; SANDSTONE; SEDIMENTARY-PETROLOGY; SEDIMENTARY-ROCKS; SEDIMENTS; SILICATES; UNITED-STATES;

Siegel, D. I., and Ericson, D. W., 1980, Hydrology and water quality of the copper-nickel study region, northeastern Minnesota:, U. S. Geological Survey, Open-File Report 80-739, 87 p. COPPER; DULUTH COMPLEX; ENVIRONMENTAL; ENVIRONMENTAL IMPACT; HYDROLOGY; LAKE COUNTY; LAYERED INTRUSION; MINNESOTA; NICKEL; ST. LOUIS COUNTY; UNITED-STATES; WATER QUALITY;

Sikkila, K., 1984, Petrographic and geochemical study of the Mount Bohemia Stock, Portage Lake Volcanics, Keweenaw Peninsula, Michigan [abs.]: 30th Annual Institute on Lake Superior Geology, Wausau, WI, v. 30, p. 72. ALTERATION; BASE METALS; FLUIDS; GEOCHEMISTRY; HYDROTHERMAL; KEWEENAW PENINSULA; LAC LA BELLE FISSURE; MICHIGAN; MINOR ELEMENT ANALYSES; MODAL ANALYSES; MOUNT BOHEMIA; MOUNT BOHEMIA STOCK; PETROGRAPHY; PORTAGE LAKE VOLCANICS; SOLUTIONS; STRUCTURAL-GEOLOGY; UNITED-STATES; UPPER-PENINSULA;

Silver, L. T., and Green, J. C., 1963, Zircon ages for middle Keweenawan rocks of Lake Superior region [abs.]: American Geophysical Union Transactions, v. 44, p. 107. AGE DATING; DULUTH COMPLEX; ENDION SILL; GEOCHRONOLOGY; LAYERED INTRUSION; MELLEN COMPLEX; MINNESOTA; NORTH SHORE VOLCANIC GROUP; RADIOGENIC ISOTOPES; ST. LOUIS COUNTY; UNITED-STATES; URANIUM-LEAD; VOLCANIC ROCKS; WISCONSIN; ZIRCONS;

---, 1972, Time constants for Keweenawan igneous activity [abs.]: Geological Society of America Abstracts with Programs, v. 4, no. 7, p. 665-666. AGE DATING; DULUTH COMPLEX; GEOCHRONOLOGY; LAYERED INTRUSION; MINNESOTA; UNITED-STATES; URANIUM-LEAD;

156 Silverman, S. R., 1951, The isotope of oxygen: Geochimica et Cosmochimica Acta, v. 2, p. 26-42. AFRICA; ANALYTICAL TECHNIQUES; ARKANSAS; BAYFIELD-COUNTY; BRAZIL; CALIFORNIA; CAMBRIAN; CANADA; COLUMBIA RIVER PROVINCE; CONNECTICUT; DIATOMITE; DOME MINE; ENGLAND; EUROPE; FEDERAL EXPLORATION MINE; FELSIC; FURNAS COUNTY; GABBRO; GNEISS; GRANITE; GRANOPHYRE; GREAT BRITAIN; GREENLAND; IGNEOUS-ROCKS; IOWA; ITALY; KANSAS; LABRADOR; LOWER- PROTEROZOIC; MAFIC; MAQUOKETA FORMATION; MELLEN COMPLEX; MENOMINEE RANGE; MESOZOIC; METAMORPHIC- ROCKS; METEORITE; MEXICO; MICHIGAN; MINAS GERAIS; MINNESOTA; NEBRASKA; NEW YORK; NORTON COUNTY; ONTARIO; OREGON; OXYGEN ISOTOPES; PALEOZOIC; PEGMATITE; PHANEROZOIC; PORCUPINE DISTRICT; POTSDAM SANDSTONE; PULASKI COUNTY; RAMSEY COUNTY; SANTA BARBARA COUNTY; SAUK COUNTY; SCHIST; SCOTLAND; SEDIMENTARY-ROCKS; SICILY; SOUTH AFRICA; SOUTH AMERICA; SOUTH DAKOTA; ST. PETER SANDSTONE; STABLE-ISOTOPES; SYENITE; TAHITI; TEKTITES; TRIASSIC; UNITED-STATES; UPPER-PENINSULA; VERMONT; WISCONSIN; WYOMING;

Simmons, E. C., Lindsley, D. H., and Papike, J. J., 1974, Phase relations and crystallization sequence in a contact-metamorphosed rock from the Gunflint Iron Formation, Minnesota: Journal of Petrology, v. 15, p. 539-565. CONTACT AUREOLE; CONTACT METAMORPHISM; CRYSTALLIZATION; DULUTH COMPLEX; GUNFLINT; GUNFLINT IRON-FORMATION; IRON-FORMATION; LAYERED INTRUSION; MINNESOTA; PETROLOGY; UNITED-STATES;

Sims, P. K., 1966, Exploration for copper-nickel resources in Minnesota: Skillings Mining Review, v. 55, no. 40, p. 6-8. COPPER; DULUTH COMPLEX; ELY; EXPLORATION; LAKE COUNTY; LAYERED INTRUSION; MINERALIZATION; MINNESOTA; NICKEL; PROSPECTING; ST. LOUIS COUNTY; SULFIDE; SULFIDES; UNITED-STATES;

---, 1967, Exploration for copper-nickel in northeastern Minnesota: Skillings Mining Review, v. 56, no. 8, p. 6-7,20. COPPER; DULUTH COMPLEX; EXPLORATION; LAKE COUNTY; LAYERED INTRUSION; MINNESOTA; NICKEL; SULFIDES; UNITED-STATES;

---, 1968, Copper and nickel developments in Minnesota: Mining Congress Journal, v. 54, no. 3, p. 29-32,34. COPPER; DULUTH COMPLEX; EXPLORATION; LAYERED INTRUSION; MINERALIZATION; MINNESOTA; NICKEL; SULFIDE; SULFIDES; UNITED-STATES;

---, 1970, Geologic map of Minnesota-bedrock geology: Minnesota Geological Survey, Miscellaneous Map Series, Map M-14, scale 1:1,000,000. ARCHEAN; BEDROCK; GEOLOGY; HINCKLEY-SANDSTONE; LOWER-PROTEROZOIC; MAP; MINNESOTA; PALEOZOIC; UNITED- STATES;

---, 1972, Regional gravity field, in Sims, P. K., and Morey, G. B., eds., Geology of Minnesota: A Centennial Volume: St. Paul, Minnesota Geological Survey, p. 581-584. ARCHEAN; DULUTH COMPLEX; GEOPHYSICS; GIANTS RANGE BATHOLITH; GRANITE; GRAVITY; GREENSTONE BELTS; LAYERED INTRUSION; MINNESOTA; MINNESOTA RIVER VALLEY; MINNESOTA RIVER VALLEY SUBPROVINCE; NORTH SHORE VOLCANIC GROUP; REGIONAL; SIOUX-QUARTZITE; UNITED-STATES; VERMILION DISTRICT; VERMILION GRANITIC COMPLEX; VOLCANIC ROCKS;

---, 1972, Magnetic data and regional magnetic patterns, in Sims, P. K., and Morey, G. B., eds., Geology of Minnesota: A Centennial Volume: St. Paul, Minnesota Geological Survey, p. 585-592. ARCHEAN; DULUTH COMPLEX; GEOPHYSICS; GREENSTONE BELTS; LAYERED INTRUSION; LOWER-PROTEROZOIC; MAGNETIC SUSCEPTIBILITY; MINNESOTA; NORTH SHORE VOLCANIC GROUP; REMANENT- MAGNETIZATION; UNITED-STATES; VERMILION DISTRICT; VOLCANIC ROCKS;

---, 1976, Precambrian tectonics and mineral deposits, Lake Superior region: Economic Geology, v. 71, p. 1092-1118. CANADA; COPPER; DULUTH COMPLEX; LAYERED INTRUSION; MICHIGAN; MINERAL DEPOSITS; MINNESOTA; NICKEL; ONTARIO; UNITED-STATES; WISCONSIN;

---, 1990, Geologic map of Precambrian rocks, Marenisco, Thayer, and Watersmeet 15-minute quadrangles, Gogebic and Ontonagon Counties, Michigan, and Vilas County, Wisconsin: U. S. Geological Survey, Miscellaneous Investigations Series, Map I-2093, scale 1:62,500. ARCHEAN; FAULT; GEOLOGY; GOGEBIC-COUNTY; LOWER-PROTEROZOIC; MAP; MARENISCO QUADRANGLE; METAMORPHISM; MICHIGAN; ONTONAGON-COUNTY; PELTON CREEK FAULT; PENOKEAN; STRUCTURAL-GEOLOGY; THAYER QUADRANGLE; UNITED-STATES; UPPER-PENINSULA; VILAS COUNTY; WATERSMEET QUADRANGLE; WISCONSIN;

---, 1991, History of discovery of copper-nickel deposits in the Duluth Complex, northeast Minnesota, in Hollister, V. F., ed., Porphyry copper, molybdenum, and gold deposits, volcanogenic deposits (massive sulfides), and deposits in layered rock:, AIME, Case histories of mineral deposits, v. 3, p. 197-199. CHILDERS; COPPER; DULUTH COMPLEX; EXPLORATION; LAKE COUNTY; LAYERED INTRUSION; MINERALIZATION; MINNESOTA; NICKEL; PROSPECTING; ST. LOUIS COUNTY; SULFIDE; SULFIDES; UNITED-STATES; WHITESIDE;

---, 1992, Geologic map of Precambrian rocks, southern Lake Superior region, Wisconsin and northern Michigan: U. S. Geological Survey, Miscellaneous Investigations Series, Map I-2185, scale 1:500,000. ARCHEAN; FAULTS; GEOLOGY; KEWEENAW PENINSULA; LOWER- PROTEROZOIC; MAP; MARSHFIELD TERRANE; MICHIGAN; STRUCTURAL-GEOLOGY; UNITED-STATES; UPPER-PENINSULA; WISCONSIN; WISCONSIN MAGMATIC TERRANE;

Sims, P. K., Cannon, W. F., and Mudrey, M. G., Jr., 1978, Preliminary geologic map of Precambrian rocks in part of northern Wisconsin: U. S. Geological Survey, scale 1:250,000. Open-file report 78-318, 3 sheets ARCHEAN; GEOLOGY; LOWER-PROTEROZOIC; MAPS; UNITED- STATES; WISCONSIN;

Sims, P. K., Card, K. D., and Lumbers, S. B., 1981, Evolution of early Proterozoic basins of the Great Lakes region, in Campbell, F. H. A., ed., Proterozoic basins of Canada:, Geological Survey of Canada, Paper 81-10, p. 379-397. ANIMIKIE; CANADA; EVOLUTION; LOWER- PROTEROZOIC; SEDIMENTARY-ROCKS; UNITED-STATES;

157 Sims, P. K., and Morey, G. B., 1974, Minnesota mineral resources: A brief overview: Skillings Mining Review, v. 63, no. 14, p. 1,6-9. COPPER; DULUTH COMPLEX; LAYERED INTRUSION; MINERAL-RESOURCES; MINERALIZATION; MINNESOTA; NICKEL; UNITED-STATES;

---, 1974, Minnesota's Mineral Resources--A brief overview, in Proceedings of the 35th Annual Mining Symposium: Minneapolis, University of Minnesota, p. 81-90. COPPER; DULUTH COMPLEX; ECONOMIC GEOLOGY; IRON ORE; IRON-FORMATION; LOWER-PROTEROZOIC; MINERAL DEPOSITS; MINNESOTA; NICKEL; ORE-DEPOSITS; SULFIDES; UNITED-STATES;

Sims, P. K., Morey, G. B., and Green, J. C., 1969, The potential for new mineral discoveries in Minnesota, in 30th Annual Mining Symposium:, University of Minnesota, Minneapolis, p. 75-87. COPPER; DULUTH COMPLEX; LAYERED INTRUSION; MINERAL DEPOSITS; MINNESOTA; NICKEL; UNITED-STATES;

Sims, P. K., and Peterman, Z. E., 1978, Precambrian geological framework of northern Wisconsin [abs.]: 24th Annual Institute on Lake Superior Geology, Milwaukee, WI, v. 24, p. 35. AGE; ARCHEAN; FAULTS; GEOCHRONOLOGY; GOGEBIC IRON RANGE; IGNEOUS-ROCKS; MARATHON COUNTY; METAMORPHIC-ROCKS; MINERAL LAKE FAULT; SEDIMENTARY-ROCKS; STRUCTURAL-GEOLOGY; UNITED-STATES; VOLCANIC ROCKS; WISCONSIN; WOLF RIVER BATHOLITH;

---, 1981, Marenisco-Watersmeet area, in Kalliokoski, J. O., Mudrey, M. G. J., Peterman, Z. E., and Sims, P. K., eds., 1981 Archean geochemistry field conference:, International Geologic Correlation Program Project 092, p. 6-36. AREAL-GEOLOGY; BLAIR CREEK FORMATION; COPPS- FORMATION; GOGEBIC-COUNTY; JACOBSVILLE-SANDSTONE; METAMORPHIC-ROCKS; MICHIGAMME FORMATION; MICHIGAN; ONTONAGON-COUNTY; PETROLOGY; PURITAN QUARTZ MONZONITE; SANDSTONE; SEDIMENTARY-ROCKS; SEDIMENTS; UNITED-STATES; UPPER-PENINSULA;

Sims, P. K., Peterman, Z. E., Zartman, R. E., and Benedict, F. C., 1985, Geology and geochronology of granitoid and metamorphic rocks of late Archean age in northwestern Wisconsin:, U. S. Geological Survey, Professional Paper 1292-C, C1-C17 p. AGE DATING; AMPHIBOLITES; ARCHEAN; ASHLAND COUNTY; BATHOLITHS; BAYFIELD-COUNTY; BIOTITE; GEOCHRONOLOGY; INTRUSIONS; METAIGNEOUS- ROCKS; METAMORPHIC-ROCKS; PETROLOGY; PURITAN QUARTZ MONZONITE; SEDIMENTARY-ROCKS; SEDIMENTS; UNITED- STATES; WISCONSIN;

Sims, P. K., and Yardley, D. H., 1967, Exploration for copper-nickel in northeastern Minnesota, in Proceedings of the 28th Annual Mining Symposium and 40th Annual Meeting, Minnesota Section, American Institute of Mining and Metallurgical Engineers:, University of Minnesota, Minneapolis, p. 59-64. COPPER; DULUTH COMPLEX; EXPLORATION; LAKE COUNTY; LAYERED INTRUSION; MINNESOTA; NICKEL; PROSPECTING; SULFIDE; SULFIDES; UNITED-STATES;

Sims, P. K., and Zietz, I., 1967, Aeromagnetic and inferred Precambrian paleogeographic map of east-central Minnesota and part of Wisconsin: U. S. Geological Survey, Geophysical Investigations, Map GP-563 [with text], 6 p., scale 1:250,000. AEROMAGNETIC SURVEY; AEROMAGNETICS; COTTAGE GROVE FAULT; FAULTS; HASTINGS-FAULT; MAP; MINNESOTA; PALEOGEOGRAPHIC MAP; STRUCTURAL-GEOLOGY; UNITED-STATES; WISCONSIN;

Sims, P. K., compiler., 1990, Precambrian basement map of the northern Midcontinent, U.S.A. with contributions from individual states: U. S. Geological Survey, Miscellaneous Map Series, Map I-1853-A. ARCHEAN; BASEMENT; CENTRAL PLAINS OROGEN; GEOLOGY; ILLINOIS; IOWA; KANSAS; LOWER-PROTEROZOIC; MAP; MICHIGAN; MINNESOTA; MISSOURI; NEBRASKA; NORTH DAKOTA; SOUTH DAKOTA; UNITED-STATES; UPPER-PENINSULA; WISCONSIN;

Sims, P. K., ed., Anderson, J. L., Bauer, R. L., Chandler, V. W., Hanson, G. N., Kalliokoski, J., Morey, G. M., Mudrey, M. G., Jr., Ojakangas, R. W., Peterman, Z. E., Schulz, K. J., Shirey, S. P., Smith, E. I., Southwick, D. L., and Weiblen, P. W., 1993, The Lake Superior region and the Trans-Hudson orogen, in Reed, J. C., Jr., Bickford, M. E., Houston, R. S., Link, P. K., Rankin, D. W., Sims, P. K., and Van Schmus, W. R., eds., Precambrian: Conterminous U.S: Boulder, CO, Geological Society of America, The Decade of North American Geology, v. C-2, The Geology of North America, p. 11-120. ANIMIKIE; ANIMIKIE BASIN; ARCHEAN; BARABOO-QUARTZITE; BARRON-QUARTZITE; CANADIAN SHIELD; COBALT; COPPER; DEFORMATION; EVOLUTION; FAULTS; FLAMBEAU QUARTZITE; GEOCHEMISTRY; GEOCHRONOLOGY; GEOLOGY; GEOPHYSICS; GOLD; GRANITE-GREENSTONE TERRANE; GRAVITY; GREAT LAKES TECTONIC ZONE; GREENSTONE BELTS; HISTORY; IGNEOUS-ROCKS; IRON; IRON-FORMATION; KEWEENAW PENINSULA; LOWER-PROTEROZOIC; MAGNETICS; MCCASLIN QUARTZITE; METALLOGENY; METAMORPHIC-ROCKS; METAMORPHISM; MICHIGAN; MINERALIZATION; MINNESOTA; MINNESOTA RIVER VALLEY; MINNESOTA RIVER VALLEY SUBPROVINCE; NIAGARA FAULT ZONE; NICKEL; PENOKEAN; PENOKEAN OROGEN; PENOKEAN OROGENY; QUARTZITE; SEDIMENTARY-ROCKS; SEISMIC; SILVER; SIOUX-QUARTZITE; STRATIGRAPHY; STRUCTURAL-GEOLOGY; SULFIDES; TECTONICS; TRANS-HUDSON OROGEN; UNITED-STATES; UPPER- PENINSULA; VERMILION DISTRICT; VMS; VOLCANIC ROCKS; VOLCANOGENIC MASSIVE SULFIDES; WATERLOO QUARTZITE; WISCONSIN; WISCONSIN MAGMATIC TERRANE; WOLF RIVER BATHOLITH; ZINC;

Sinclair, W. D., Jambor, J. L., and Birkett, T. C., 1992, Rare earths and the potential for rare-earth deposits in Canada: Exploration and Mining Geology, v. 1, p. 265-281. ALKALIC COMPLEX; ALKALINE; ALKALINE INTRUSION; CANADA; CARBONATITE; DEAD HORSE CREEK DIATREME; DIATREME; DISTRICT OF THUNDER BAY; MINERALIZATION; ONTARIO; RARE-EARTH ELEMENTS; REE;

Singewald, J. T., 1928, Genetic comparison of Michigan and Bolivian copper deposits: Economic Geology, v. 23, p. 55-61. ALGODONITE; ARSENIDES; BOLIVIA; CHALCOCITE; COPPER; COROCORO DEPOSITS; DOMEYKITE; FLUIDS; GENESIS; MAGMATIC; MICHIGAN; MICHIGAN COPPER DISTRICT; MINERALIZATION; ORE-DEPOSITS; ORIGIN; REDUCTION; SOLUTIONS; SOUTH AMERICA; SULFIDES; UNITED-STATES; UPPER-PENINSULA; VEINS;

Sleep, N. H., and Sloss, L. L., 1978, A deep borehole in the Michigan Basin: Journal of Geophysical Research, v. 83, p. 5815-5819. BOREHOLE; DENSITY; GEOPHYSICS; GRATIOT-COUNTY; GREENSCHIST-FACIES; HEAT-FLOW; IGNEOUS-ROCKS; JACOBSVILLE-SANDSTONE;

158 LOWER PENINSULA; MCCLURE-SPARKS NO. 1; METAMORPHISM; MICHIGAN; MICHIGAN-BASIN; RED-BEDS; SANDSTONE; UNITED-STATES; VELOCITY;

Slichter, L. B., 1951, Crustal structure in the Wisconsin area: Washington, D.C., Office of Naval Research, Report N9-ONR-86200, CRUST; GEOPHYSICS; ILLINOIS; MICHIGAN; SEISMIC; SEISMIC-SURVEYS; STRUCTURAL-GEOLOGY; UNITED-STATES; VELOCITY; WISCONSIN;

Sliney, R. E., 1988, Comparative mineralogy and geochemistry of a stratigraphic unit within the upper shale member of the Nonesuch Formation, White Pine, Michigan [M.S. Thesis]: University of Michigan, Ann Arbor COPPER; GEOCHEMISTRY; MICHIGAN; MICHIGAN COPPER DISTRICT; MINERALOGY; NONESUCH SHALE; ONTONAGON-COUNTY; ORONTO-GROUP; STRATIGRAPHY; UNITED-STATES; UPPER SHALE; UPPER-PENINSULA; WHITE PINE MINE;

Sloan, R. E., and Danes, Z. F., 1962, A geologic and gravity survey of the Belle Plaine area, Minnesota: Proceedings of the Minnesota Academy of Science, v. 30, no. 1, p. 49-52. BELLE PLAINE FAULT; CARVER COUNTY; FAULT; FOND DU LAC FORMATION; GEOPHYSICS; GRAVITY; GRAVITY-ANOMALIES; GRAVITY-SURVEYS; LE SUEUR COUNTY; MCLEOD COUNTY; MINNESOTA; MODELLING; ORDOVICIAN; PALEOZOIC; PHANEROZOIC; SCOTT COUNTY; SIBLEY COUNTY; STRUCTURAL-GEOLOGY; UNITED-STATES;

Sloss, L. L., 1982, The Michigan Basin, in Proctor, P. D., and Koenig, J. W., eds., Selected structural basins of Midcontinent, USA:, University of Missouri-Rolla, Journal, v. 3, p. 25-29. CANADA; DEFORMATION; FLEXURE; FUEL-RESOURCES; GEOPHYSICS; GRENVILLE-FRONT; IGNEOUS-ROCKS; MAFIC; MICHIGAN; MICHIGAN-BASIN; ONTARIO; PALEOMAGNETISM; SEDIMENTARY-ROCKS; SEDIMENTS; STRUCTURAL-GEOLOGY; TECTONICS; UNITED-STATES; WISCONSIN;

Smale, G. R., 1958, A field and petrographic study of the Freda Formation (Precambrian) along the Montreal River, Gogebic County, Michigan [M.S. Thesis]: Michigan State University, East Lansing CLASTIC-ROCKS; FREDA-SANDSTONE; GOGEBIC-COUNTY; LITHOSTRATIGRAPHY; MICHIGAN; MONTREAL-RIVER; ORONTO-GROUP; PETROGRAPHY; SANDSTONE; SEDIMENTARY-ROCKS; SEDIMENTS; STRATIGRAPHY; UNITED-STATES; UPPER-PENINSULA;

Smith, A. R., and Sutcliffe, R. H., 1987, Keweenawan intrusive rocks of the Thunder Bay area, in Summary of field work and other activities, 1987:, Ontario Geological Survey, Miscellaneous Paper 137, p. 248-255. ALKALINE; ALKALINE INTRUSION; ALTERATION; ANIMIKIE; BARITE; BASAL ZONE; BASE METAL ANALYSES; CALCITE; CANADA; CANADIAN SHIELD; CHALCOPYRITE; CHROMITE; CHROMIUM; COPPER; CROOKS TOWNSHIP; CRYSTAL LAKE INTRUSION; DEFORMATION; DIABASE; DISTRICT OF THUNDER BAY; ECONOMIC GEOLOGY; FRACTURES; GEOCHEMISTRY; GEOLOGY; GOLD; GREAT LAKES NICKEL; INTRUSION; JARVIS ISLAND MINE; LAYERED ZONE; LINEAMENT; LOGAN SILLS; LOWER ZONE; LOWER-PROTEROZOIC; MCKELLAR ISLAND; MIDDLE ZONE; NICKEL; NORTH RIVER-MOUNT MOLLIE INTRUSION; PGE; PLATINUM-GROUP ELEMENTS; PRECIOUS METAL ANALYSES; PRINCE MINE; PYRRHOTITE; ROVE FORMATION; SILLS; SILVER; SPAR ISLAND MINE; STRUCTURAL-GEOLOGY; SUPERIOR PROVINCE; THUNDER BAY; UPPER ZONE;

Smith, J. G., Hinze, W. J., and Green, A. G., 1989, Extending the interpretation of seismic reflection profiling over the Grenville Front in Lake Huron with geopotential field data [abs.]: Eos (American Geophysical Union Transactions), v. 70, no. 15, p. 271. AEROMAGNETIC SURVEY; AEROMAGNETICS; BRITT DOMAIN; CANADA; CRUST; GEOLOGY; GEOPHYSICS; GLIMPCE; GRAVITY; GRAVITY-ANOMALIES; GRENVILLE FRONT TECTONIC ZONE; GRENVILLE OROGENY; GRENVILLE-FRONT; LAKE SUPERIOR; LAKE-HURON; MAGNETICS; MOHO; ONTARIO; PENOKEAN OROGEN; PROFILES; REFLECTION; SEISMIC; SEISMIC-SURVEYS; THICKNESS; UNITED-STATES;

Smith, M. C., 1947, Copper deposits of Douglas County, Wisconsin:, U. S. Bureau of Mines, Report of Investigations 4088, 7 p. AMYGDALOIDAL; COPPER; DOUGLAS-COUNTY; EXPLORATION; GEOCHEMISTRY; HISTORY; MAFIC; MINERALIZATION; MINES; NATIVE COPPER; NATIVE-SILVER; PROSPECTING; SAMPLING; SHAFT; UNITED-STATES; VOLCANIC ROCKS; WISCONSIN;

Smith, M. M., 1990, Bioturbation in the Jacobsville Sandstone, Lake Linden location; what are the implications? [abs.]: 36th Annual Institute on Lake Superior Geology, Thunder Bay, ONT, v. 36, p. 108. BIOGENIC-STRUCTURES; BIOTURBATION; CLASTIC-ROCKS; GLAUCONITE; JACOBSVILLE-SANDSTONE; LAKE-LINDEN; MICHIGAN; PERMEABILITY; PETROGRAPHY; POROSITY; SANDSTONE; SEDIMENTARY STRUCTURES; SEDIMENTARY-PETROLOGY; SEDIMENTARY-ROCKS; SEDIMENTS; THIN-SECTIONS; UNITED- STATES;

Smith, P. A., and Moore, J. R., 1972, The distribution of trace metals in the surficial sediments surrounding Keweenaw Point, upper Michigan, in: Sea Grant College, Reprint, p. 383-393. BASE METAL ANALYSES; CENOZOIC; COPPER; EXPLORATION; HOLOCENE; KEWEENAW POINT; LAKE SUPERIOR; MICHIGAN; PHANEROZOIC; RECENT; SEDIMENT; UNITED-STATES; UPPER-PENINSULA;

Smith, R. E., 1974, The production of spilitic lithologies by burial metamorphism of flood basalts form the Canadian Keweenawan, Lake Superior, in Amstutz, G. C., ed., Spilites and spilitic rocks: New York, Springer, p. 403-416. ALBITIZATION; ALTERATION; BURIAL- METAMORPHISM; CANADA; CONGLOMERATE; DISTRICT OF ALGOMA; FLOOD BASALTS; MAMAINSE POINT; MAMAINSE POINT FORMATION; METAMORPHISM; ONTARIO; SEDIMENTARY-ROCKS; SPILITE; VOLCANIC; VOLCANIC ROCKS;

Smith, S. L., 1914, Pre-historic and modern copper mines of Lake Superior:, Pre-Print, 23 p. AHMEEK MINE; ARCHEOLOGY; ATLANTIC MINE; BALTIC MINE; CALUMET AND HECLA MINE; CANADA; CHAMPION MINE; COPPER; DISTRICT OF ALGOMA; HISTORY; ISLE ROYALE MINE; KEWEENAW COUNTY; KEWEENAW PENINSULA; LAKE MINE; LAKE SUPERIOR; MASS MINE; MICHIGAN; MICHIGAN COPPER DISTRICT; MICHIPICOTEN ISLAND; MINES; MINING; MOHAWK MINE; ONTARIO; ONTONAGON RIVER; ONTONAGON-COUNTY; OSCEOLA MINE; PRODUCTION; QUINCY MINE; TAMARACK MINE; TRIMOUNTAIN MINE; UNITED-STATES; UPPER-PENINSULA; VICTORIA MINE; WHITE PINE MINE; WISCONSIN; WOLVERINE MINE;

159 Smith, T. J., Steinhart, J. S., and Aldrich, L. T., 1966, Lake Superior crustal structure: Journal of Geophysical Research, v. 71, p. 1141-1172. CANADA; CRUST; CRUSTAL STRUCTURE; GEOPHYSICS; LAKE SUPERIOR; REGIONAL; STRUCTURAL-GEOLOGY; UNITED-STATES;

---, 1966, Crustal structure under Lake Superior, in Steinhart, J. S., and Smith, T. J., eds., The Earth beneath the continents: Washington, D.C., American Geophysical Union, Geophysical Monograph 10, p. 181-197. CRUST; GEOPHYSICS; LAKE SUPERIOR; STRUCTURAL-GEOLOGY; UNITED-STATES;

Smyk, M. C., 1986, Macroscopic petrography of sulphide mineralization at the Marathon Pt-Pd-Cu property, Coldwell alkaline complex, northwestern Ontario: Unpublished study, Department of Geology, Carleton University, Ottawa, Ontario, 36 p. ALKALIC COMPLEX; ALKALINE; ALKALINE INTRUSION; CANADA; COLDWELL COMPLEX; COPPER; DISTRICT OF THUNDER BAY; MARATHON; MINERALIZATION; ONTARIO; PETROGRAPHY; PGE; PLATINUM-GROUP ELEMENTS; PORT COLDWELL; SULFIDES;

Smyk, M. C., Kingston, D. M., and Taylor, R. P., 1989, Geology of the West Dead Horse Creek diatreme-hosted rare metal occurrences, Schreiber- Hemlo District, Ontario [abs.]: Geological Association of Canada/Mineralogical Association of Canada Program with Abstracts, v., p. A2. ALKALIC COMPLEX; ALKALINE; ALKALINE INTRUSION; CANADA; DEAD HORSE CREEK DIATREME; DIATREME; GEOLOGY; MINERALIZATION; ONTARIO; RARE-EARTH ELEMENTS; REE; SCHREIBER-HEMLO DISTRICT; WEST DEAD HORSE CREEK DIATREME;

Smyk, M. C., Taylor, R. P., Jones, P. C., and Kingston, D. M., 1993, Geology and geochemistry of the West Dead Horse Creek rare-metal occurrence, northwestern Ontario: Exploration and Mining Geology, v. 2, no. 3, p. 245-251. ALKALIC COMPLEX; ALKALINE; ALKALINE INTRUSION; BRECCIA; CANADA; CARBONATITE; DEAD HORSE CREEK DIATREME; DIATREME; DIKE; DISTRICT OF THUNDER BAY; GEOCHEMISTRY; MINERAL CHEMISTRY; MINERALIZATION; ONTARIO; RADIOACTIVE; RARE-EARTH ELEMENTS; REE; THORIUM; TRACE ELEMENT ANALYSES; URANIUM; WAWA SUBPROVINCE;

Smyk, M. C., Taylor, R. P., Kingston, D. M., and Jones, P. C., 1993, Geology and geochemistry of the West Dead Horse Creek rare-metal occurrence, northwestern Ontario: Exploration and Mining Geology, v. 2, p. 245-251. CANADA; DEAD HORSE CREEK DIATREME; GEOCHEMISTRY; GEOLOGY; MINERAL DEPOSIT; MINERALIZATION; ONTARIO; RARE-EARTH ELEMENTS; REE; WEST DEAD HORSE CREEK DIATREME;

Smyres, G. A., Lei, K. P. V., and Carnahan, T. G., 1985, Hydrochloric acid-oxygen leaching and metal recovery from a copper-nickel bulk sulfide concentrate:, U. S. Bureau of Mines, Report of Investigations 8999, 17 p. BENEFICIATION; COPPER; DULUTH COMPLEX; LAYERED INTRUSION; LEACHING; METAL RECOVERY; MINERAL PROCESSING; MINNESOTA; NICKEL; SULFIDES; UNITED-STATES;

Smyth, H. L., 1896, On the origin of the copper deposits of Keweenaw Point [abs.]: American Journal of Science, v. 3, p. 251-252. COPPER; KEWEENAW POINT; MICHIGAN; MICHIGAN COPPER DISTRICT; MINERAL DEPOSITS; MINERALIZATION; ORE-DEPOSITS; ORIGIN; UNITED-STATES; UPPER-PENINSULA;

Snelgrove, A. K., 1957, Geological Exploration: Houghton, Michigan College of Mining and Metallurgy Press, Institute on Lake Superior Geology, 109 p. BENEFICIATION; CANADA; COPPER; DULUTH COMPLEX; FAULTS; GEOCHEMISTRY; GEOLOGY; GEOPHYSICS; IRON ORE; IRON-FORMATION; LAYERED INTRUSION; LOWER-PROTEROZOIC; MAGNETICS; MANITOUWADGE LAKE; MICHIGAN; MICHIGAN COPPER DISTRICT; MINERAL PROCESSING; MINERALIZATION; MINNESOTA; NATIVE COPPER; NEQAUNEE IRON FORMATION; ONTARIO; ONTONAGON-COUNTY; PROSPECTING; STRUCTURAL-GEOLOGY; UNITED-STATES; UPPER-PENINSULA; WHITE PINE MINE; WISCONSIN;

Snider, D. W., Klasner, J. S., Quam, S., Lilienthal, R., Geraci, P., and Grosz, A., 1977, Geophysical studies of peridotite dikes, Yellow Dog Plains, northern Michigan [abs.]: 23rd Annual Institute on Lake Superior Geology, Thunder Bay, ONT, v. 23, p. 42. CHAMPION QUADRANGLE; DIKES; ELECTROMAGNETIC-SURVEYS; ELECTROMAGNETICS; FAULTS; GEOPHYSICS; GRAVITY; GRAVITY-SURVEYS; GROUND MAGNETOMETER SURVEY; LOWER-PROTEROZOIC; MAGNETICS; MARQUETTE COUNTY; MICHIGAMME-SLATE; MICHIGAN; PALEOMAGNETISM; PERIDOTITE; STRUCTURAL-GEOLOGY; SULFIDES; UNITED-STATES; UPPER-PENINSULA; VERY LOW FREQUENCY; VLF; YELLOW DOG PLAINS;

Snider, D. W., and Parker, B. K., 1979, Geochemical and geophysical anomalies associated with the Bear Lake Intrusive, Sections 24 and 25, T56N, R34W, Houghton County, Michigan [abs.]: 25th Annual Institute on Lake Superior Geology, Duluth, MN, v. 25, p. 38. BEAR LAKE INTRUSION; COPPER; ELECTROMAGNETIC-SURVEYS; ELECTROMAGNETICS; EXPLORATION; FREDA-SANDSTONE; GEOCHEMISTRY; GEOPHYSICS; HOUGHTON-COUNTY; IGNEOUS-ROCKS; MICHIGAN; MICHIGAN COPPER DISTRICT; NATIVE COPPER; ORONTO- GROUP; SEDIMENTARY-ROCKS; SOIL GEOCHEMISTRY; TRACE ELEMENT ANALYSES; UNITED-STATES; UPPER-PENINSULA; WHOLE ROCK ANALYSES;

Snider, H. I., 1962, Subsurface geology and the Mt. Simon-Precambrian contact in southeastern Minnesota [M.S. Thesis]: University of Minnesota, Minneapolis, 47 p. ANOKA FAULT; CARVER COUNTY; CARVER-CHISAGO HORST; CHISAGO-COUNTY; DEPOSITION; DRESBACH FORMATION; FAULTS; FOND DU LAC FORMATION; FRANCONIA-FORMATION; GEOLOGY; GOODHUE COUNTY; HENNEPIN COUNTY; HINCKLEY-SANDSTONE; HORSTS; ISOPACH; JORDAN SANDSTONE; KINNICKINNICK RIVER FAULTS; MAP; MINNESOTA; MT. SIMON SANDSTONE; NORTHFIELD ANTICLINE; PALEOZOIC; PHANEROZOIC; RIVER FALLS SYNCLINE; SEDIMENTOLOGY; SIBLEY COUNTY; ST. LAWRENCE FORMATION; STRUCTURAL-GEOLOGY; SUBSURFACE; TECTONICS; TWIN CITIES BASIN; UNITED-STATES; WASECA FAULT; WASHINGTON-COUNTY; WRIGHT COUNTY;

Snyder, J. L., 1956, Geochemical study of the Duluth lopolith [Ph.D. Dissertation]: Northwestern University, Evanston, IL, 180 p. ANORTHOSITIC SERIES; COOK COUNTY; DULUTH COMPLEX; EARLY MAFIC SERIES; GEOCHEMISTRY; LAKE COUNTY; LAYERED INTRUSION; MINERAL CHEMISTRY; MINNESOTA; NATHAN'S LAYERED SERIES; OLIVINE; PLAGIOCLASE; PYROXENE; SOUTH KAWISHIWI INTRUSION; UNITED-STATES;

160 ---, 1957, A geochemical study of the Duluth lopolith [abs.]: Geological Society of America Bulletin, v. 68, p. 1798. DULUTH COMPLEX; GEOCHEMISTRY; LAYERED INTRUSION; MINNESOTA; UNITED-STATES;

---, 1959, Distribution of certain elements in the Duluth Complex: Geochimica et Cosmochimica Acta, v. 16, p. 243-277. DULUTH COMPLEX; GEOCHEMISTRY; LAYERED INTRUSION; MINNESOTA; UNITED-STATES;

Somanas, C., 1984, A comprehensive geophysical interpretation of the Midcontinent Geophysical Anomaly in northeastern Kansas [M.S. Thesis]: University of Kansas, Lawrence, 87 p. GEOPHYSICS; KANSAS; UNITED-STATES;

Somanas, C., Knapp, R. W., Yarger, H. L., and Steeples, D. W., 1989, Geophysical model of the midcontinent geophysical anomaly in northeastern Kansas: Kansas Geological Survey Bulletin, v. 226, p. 215-228. GEOPHYSICS; KANSAS; MODEL; MODELLING; UNITED-STATES;

Southwick, D. L., and Chandler, V. W., 1987, Mica-bearing olivine pyroxenite of possible lamproite-kimberlite affinity in central Minnesota: Economic Geology, v. 82, p. 212-217. AEROMAGNETIC ANOMALY; AEROMAGNETIC SURVEY; AEROMAGNETICS; ALTERATION; BASE METAL ANALYSES; DIAMONDS; GEOCHEMISTRY; GEOPHYSICS; KIMBERLITES; LAMPROITES; MAGNETIC SUSCEPTIBILITY; MAJOR ELEMENT ANALYSES; MINERALOGY; MINNESOTA; MODAL ANALYSES; MORRISON COUNTY; PETROGRAPHY; PIERCE- COUNTY; PIPE; PYROXENITE; REMANENT-MAGNETIZATION; STEARNS COUNTY; TRACE ELEMENT ANALYSES; ULTRAMAFIC; UNITED-STATES; WHOLE ROCK ANALYSES; WISCONSIN;

Spall, H., 1971, Precambrian apparent polar wandering: Evidence from North America: Earth and Planetary Science Letters, v. 10, p. 273-280. ARCHEAN; CANADA; GEOPHYSICS; LOWER-PROTEROZOIC; PALEOMAGNETISM; PALEOPOLE; POLAR-WANDERING; UNITED- STATES;

Spiroff, K., 1941, Dip-needle survey of Wyandotte-Winona area, Houghton County and Cherokee area, Ontonagon County:, Michigan Geological Survey, Progress Report no. 7, 17 p. CHEROKEE; COPPER; DIP-NEEDLE SURVEY; GEOPHYSICS; HOUGHTON-COUNTY; MICHIGAN; MICHIGAN COPPER DISTRICT; NATIVE COPPER; ONTONAGON-COUNTY; UNITED-STATES; UPPER-PENINSULA; WINONA; WYANDOTTE;

---, 1965, Keweenaw Fault, Houghton County, Michigan [abs.]: 11th Annual Institute on Lake Superior Geology, St. Paul, MN, v. 11, p. 31. HOUGHTON-COUNTY; KEWEENAW FAULT; MICHIGAN; STRUCTURAL-GEOLOGY; UNITED-STATES; UPPER-PENINSULA;

Spiroff, K., and Slaughter, A. E., 1961, Geologic features of parts of Houghton, Keweenaw, Baraga and Ontonagon counties, Michigan:, Michigan Geological Society, Annual Field Excursion Guidebook, 50 p. BARAGA COUNTY; GEOLOGY; GUIDEBOOK; HOUGHTON-COUNTY; KEWEENAW COUNTY; MICHIGAN; ONTONAGON-COUNTY; UNITED-STATES; UPPER-PENINSULA;

Stakes, D. S., 1978, Mineralogy and geochemistry of the Michigan deep hole metagabbro and an East Pacific rise metagabbro: Effects of seawater hydrothermal alteration: Journal of Geophysical Research, v. 83. ALTERATION; BOREHOLE; EAST PACIFIC RISE; GABBRO; GEOCHEMISTRY; GRATIOT-COUNTY; GREENSCHIST-FACIES; HYDROTHERMAL; LOWER PENINSULA; MCCLURE-SPARKS NO. 1; METAMORPHISM; MICHIGAN; MICHIGAN-BASIN; MINERALOGY; SEAWATER; UNITED-STATES;

Stark, J. R., 1977, Surficial geology and ground-water geology of the Babbitt-Kawishiwi area, northeastern Minnesota with planning implications [M.S. Thesis]: University of Wisconsin, Madison BABBITT; CENOZOIC; COPPER; DULUTH COMPLEX; GLACIAL GEOLOGY; GROUNDWATER; HYDROGEOLOGY; HYDROLOGY; MINNAMAX; MINNESOTA; NICKEL; PARTRIDGE RIVER INTRUSION; PLANNING; PLEISTOCENE; QUATERNARY; ST. LOUIS COUNTY; SULFIDES; SURFICIAL GEOLOGY; UNITED-STATES;

Stark, J. T., 1995, In search of the East Continent Rift Complex: Evidence and conclusions [abs.], in Ojakangas, R. W., Dickas, A. B., and Green, J. C., eds., Basement Tectonics 10: Proceedings of the Tenth International Conference on Basement Tectonics: Netherlands, Kluwer Academic Publishers, v. 4, p. 103-105. EAST CONTINENT RIFT BASIN; FAULTS; GRENVILLE FRONT TECTONIC ZONE; INDIANA; KENTUCKY; OHIO; PALEOZOIC; PHANEROZOIC; RIFT BASIN; ROUGH CREEK-SHAWNEETOWN FAULT SYSTEM; SEDIMENTARY-ROCKS; STRUCTURAL-GEOLOGY; UNITED-STATES;

Stark, T., 1992, In search of the East Continent Rift Complex: Evidence and conclusions [abs.]: Geological Society of America Abstracts with Programs, v. 24, no. 7, p. A364. CINCINNATI ARCH; EAST CONTINENT RIFT BASIN; FAULTS; GRENVILLE; INDIANA; KENTUCKY; OHIO; RIFT BASIN; RIFTING; STRUCTURAL-GEOLOGY; UNITED-STATES;

Stauffer, C. R., 1927, Age of the Red Clastic series of Minnesota: Geological Society of America Bulletin, v. 38, p. 469-478. AGE; CARLTON COUNTY; CLASTICS; FOND DU LAC FORMATION; HINCKLEY-SANDSTONE; KANABEC COUNTY; MINNESOTA; PINE-COUNTY; RED CLASTICS; SEDIMENTARY-ROCKS; SEDIMENTS; UNITED-STATES;

---, 1927, Age of the Red Clastic series of Minnesota: Pan-American Geologist, v. 47, no. 2, p. 154. CLASTICS; MINNESOTA; RED CLASTICS; SEDIMENTARY-ROCKS; UNITED-STATES;

Stauffer, C. R., Burch, E. P., and Schwartz, G. M., 1935, A re-interpretation of the Stillwater deep-well records: Journal of Geology, v. 43, p. 630-638. DRILL HOLE; FRANCONIA-FORMATION; HINCKLEY-SANDSTONE; JORDAN SANDSTONE; MINNESOTA; ONEOTA DOLOMITE; PALEOZOIC; PHANEROZOIC; SEDIMENTARY-ROCKS; ST. LAWRENCE FORMATION; UNITED-STATES; WASHINGTON-COUNTY;

Stauffer, C. R., and Thiel, G. A., 1941, The Paleozoic and related rocks of southeastern Minnesota:, Minnesota Geological Survey, Bulletin 29, 261 p. FOND DU LAC FORMATION; GEOLOGY; MINNESOTA; PALEOZOIC; PHANEROZOIC; SEDIMENTARY-ROCKS; UNITED-STATES;

161 Steinhart, J. S., 1964, Lake Superior seismic experiment: Shots and travel times: Journal of Geophysical Research, v. 69, p. 5335-5352. GEOPHYSICS; LAKE SUPERIOR; SEISMIC; SEISMIC-SURVEYS; UNITED-STATES;

Steinhart, J. S., Hart, S. R., and Smith, T. J., 1969, Heat flow, in: Washington, D.C., Carnegie Institution, Year Book, v. 67, p. 360-367. GEOPHYSICS; HEAT-FLOW; LAKE SUPERIOR; PROTEROZOIC;

Steinhart, J. S., and Meyer, R. P., 1961, Explosion studies of continental structure: Washington, D.C., Carnegie Institute, Publication 622, 409 p. ANIMIKIE; APOSTLE-ISLANDS; ARCHEAN; GEOPHYSICS; KEWEENAW PENINSULA; LOWER-PROTEROZOIC; REFRACTION; SEISMIC; SEISMIC-SURVEYS; UNITED-STATES; WISCONSIN; WISCONSIN MAGMATIC TERRANE;

Steinhart, J. S., Meyer, R. P., and Woollard, G. P., 1961, Wisconsin-upper Michigan, 1958-1959, in Steinhart, J. S., and Meyer, R. P., eds., Explosion studies of continental structure: Washington, D.C., Carnegie Institute, Publication 622, p. 248-304. CRUST; GEOPHYSICS; LAKE SUPERIOR; SEISMIC; SEISMIC-SURVEYS; STRUCTURAL-GEOLOGY; UNITED-STATES;

Steinhart, J. S., and Smith, T. J., 1966, The Earth beneath the continents: Washington, D.C., American Geophysical Union, 663 p. CANADA; CRUST; DISTRICT OF ALGOMA; DISTRICT OF THUNDER BAY; GEOPHYSICS; LAKE SUPERIOR; MICHIGAN; MINNESOTA; ONTARIO; STRUCTURAL-GEOLOGY; UNITED-STATES; WISCONSIN;

---, 1966, Time term and structure in the western Lake Superior region, in Steinhart, J. S., and Smith, T. J., eds., The Earth beneath the continents: Washington, D.C., American Geophysical Union, Geophysical Monograph 10, p. 198-240. GEOPHYSICS; GRAVITY; LAKE SUPERIOR; MINNESOTA; SEISMIC; SEISMIC-SURVEYS; STRUCTURAL-GEOLOGY; UNITED-STATES; VELOCITY; WISCONSIN;

Stevenson, R. J., 1973, A Keweenawan layered mafic intrusion near Finland, Lake County, Minnesota [abs.]: 19th Annual Institute on Lake Superior Geology, Madison, WI, v. 19, p. 36. BEAVER BAY COMPLEX; CRYPTIC LAYERING; CUMULATES; DULUTH COMPLEX; FINLAND; LAKE COUNTY; LAYERED INTRUSION; MAFIC; MINERAL CHEMISTRY; MINNESOTA; RHYTHMIC LAYERING; SONJU LAKE INTRUSION; UNITED-STATES;

---, 1974, A mafic layered intrusion of Keweenawan age near Finland, Lake County, Minnesota [M.S. Thesis]: University of Minnesota, Duluth, 160 p. DULUTH COMPLEX; FINLAND; LAKE COUNTY; LAYERED INTRUSION; MAFIC; MINNESOTA; SONJU LAKE INTRUSION; UNITED-STATES;

---, 1982, Amphiboles at the base of the Duluth Complex, Minnesota [Ph.D. Dissertation]: University of Minnesota, Minneapolis, 174 p. AMPHIBOLE; DULUTH COMPLEX; LAYERED INTRUSION; MINERALOGY; MINNESOTA; UNITED-STATES;

Stevenson, R. J., Chase, C. G., and Weiblen, P. W., 1975, Geologic interpretation of a gravity study in the Grand Portage area, northeastern Minnesota [abs.]: Eos (American Geophysical Union Transactions), v. 56, p. 603. COOK COUNTY; DULUTH COMPLEX; GEOPHYSICS; GRAND PORTAGE; GRAVITY; LAYERED INTRUSION; MINNESOTA; UNITED-STATES;

Stevenson, R. J., Kreisman, P. J., and Sather, N. P., 1979, Geology and mineralogy, in Veith, D. L., Kreisman, P. J., and Poppe, R. H., eds., Regional Copper-Nickel Study:, Minnesota Environmental Quality Board, v. 3, Chapter 1, p. 70. ANIMIKIE; ANIMIKIE GROUP; ANORTHOSITIC SERIES; ARCHEAN; BABBITT; BALD EAGLE INTRUSION; BASE METAL ANALYSES; BASE METALS; BIWABIK IRON-FORMATION; BORNITE; CHALCOCITE; CHALCOPYRITE; CONCENTRATE; CONTACT METAMORPHISM; COPPER; COVELLITE; CUBANITE; CUPRITE; DIGENITE; DISSEMINATED ORE; DULUTH COMPLEX; DUNKA PIT; FAULTS; FELSIC SERIES; GALENA; GEOCHEMISTRY; GEOLOGY; GIANTS RANGE; GLACIAL GEOLOGY; GRANITE; GREENSTONE BELTS; INCO; IRON-FORMATION; KNIFE LAKE GROUP; LAKE COUNTY; LAYERED INTRUSION; LOWER-PROTEROZOIC; MACKINAWITE; METAMORPHISM; MINERAL CHEMISTRY; MINERAL DEPOSIT; MINERALIZATION; MINERALOGY; MINNAMAX; MINNESOTA; NATIVE COPPER; NICKEL; PARTRIDGE RIVER INTRUSION; PENTLANDITE; POKEGAMA QUARTZITE; POWERLINE GABBRO; PUCKWUNGE FORMATION; PYRITE; PYRRHOTITE; RAILROAD TROCTOLITE; REGIONAL COPPER-NICKEL STUDY; ROCK QUALITY DATA; RQD; SEDIMENTARY-ROCKS; SOILS; SOUTH KAWISHIWI INTRUSION; SPHALERITE; SPRUCE ROAD; ST. LOUIS COUNTY; STRUCTURAL-GEOLOGY; SULFIDE; SULFIDES; SURFICIAL GEOLOGY; TAILING BASIN; TAILING DAM; TAILINGS; TENORITE; TRACE ELEMENTS ANALYSES; TROCTOLITIC SERIES; UNITED-STATES; VERMILION DISTRICT; VIOLARITE; VIRGINIA FORMATION; WHOLE ROCK ANALYSES;

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Stewart, J. H., 1972, Initial deposits in the Cordilleran Geosyncline: Evidence of a late Precambrian (<850 Ma) continental separation: Geological Society of America Bulletin, v. 83, p. 1345-1360. CORDILLERAN; GEOSYNCLINE; SEDIMENTARY-ROCKS; UNITED-STATES; UPPER- PROTEROZOIC;

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162 Stoiber, R. E., and Davidson, E. S., 1959, Amygdule mineral zoning in the Portage Lake lava series, Michigan copper district: Economic Geology, v. 54, p. 1250-1277,1444-1460. AMYGDALOIDAL; AMYGDULE; MICHIGAN; PORTAGE LAKE VOLCANICS; UNITED-STATES; UPPER- PENINSULA; ZONING;

Strakele, A. E., Jr., 1978, The geology and petrology of the Wine Lake intrusion, Cook County, Minnesota [abs.]: 24th Annual Institute on Lake Superior Geology, Milwaukee, WI, v. 24, p. 37. COOK COUNTY; CRYSTALLIZATION; DULUTH COMPLEX; FRACTIONATION; GEOLOGY; LAYERED INTRUSION; MINNESOTA; PETROLOGY; UNITED-STATES; WINE LAKE; WINE LAKE INTRUSION;

Straw, W. T., Passero, R. N., Curran, D. L., and Schmaltz, L. J., 1983, Hydrogeology of Michigan [abs.]: Geological Society of America Abstracts with Programs, v. 15, no. 4, p. 212-213. AQUIFERS; CLASTIC-SEDIMENTS; DRIFT; GROUNDWATER; HYDROGEOLOGY; JACOBSVILLE- SANDSTONE; MACKINAC-BRECCIA; MICHIGAN; MICHIGAN-BASIN; PALEOZOIC; POROSITY; SANDSTONE; SEDIMENTARY-ROCKS; SEDIMENTS; SURVEYS; SYLVANIA-SANDSTONE; UNITED-STATES;

Strommer, J., Morton, P., Hauck, S. A., and Barnes, R. J., 1990, Geology and mineralization of a cyclic layered series, Water Hen intrusion, St. Louis County, Minnesota: Duluth, Natural Resources Research Institute, University of Minnesota, Technical Report NRRI/GMIN-TR-89-17, 29 p. BASE METALS; DULUTH COMPLEX; GEOCHEMISTRY; GEOLOGY; GOLD; IGNEOUS PROCESS; ILMENITE; LAYERED INTRUSION; MAGNETITE; MAJOR ELEMENTS; MINNESOTA; MINOR ELEMENTS; NRRI; OUIS; OXIDE-BEARING ULTRAMAFIC INTRUSION; PGE; PLATINUM-GROUP ELEMENTS; PRECIOUS METALS; SILVER; SPINEL; ST. LOUIS COUNTY; STRUCTURAL-GEOLOGY; SULFIDES; TRACE ELEMENTS ANALYSES; UNITED-STATES; WATER HEN;

Strother, P. K., 1986, Palynomorphs from the copper-bearing Nonesuch Formation (late Precambrian) [abs.]: American Association of Stratigraphic Palynologists, Program and Abstracts, v. 19, p. 35. CLASTIC-ROCKS; EMPLACEMENT; LOW-TEMPERATURE; MICHIGAN; MICROFOSSILS; NONESUCH SHALE; ORONTO-GROUP; PALYNOMORPHS; PLANKTONIC-TAXA; PROTOSPHAERIDIUM; SEDIMENTARY-ROCKS; SEDIMENTS; SHALE; STRATIGRAPHY; TRACHYSPHAERIDIUM; UNITED-STATES; UPPER-WISCONSIN;

Stucker, G. F., 1974, Shores of the Apostles, Once again the Manitou treads the land of Hiawatha: National Parks Conservation Magazine, v. 48, no. 7, p. 4-9. National Parks Conservation Magazine, v. 48, no. 7, p. 4-9 APOSTLE-ISLANDS; BAYFIELD-COUNTY; ECOLOGY; ENVIRONMENTAL GEOLOGY; LAND-USE; POPULAR AND ELEMENTARY GEOLOGY; SEDIMENTARY-ROCKS; SEDIMENTS; UNITED- STATES; WISCONSIN;

Stuhr, S. W., 1976, Geology of the Round Lake intrusion, Sawyer County, Wisconsin [M.S. Thesis]: University of Wisconsin, Madison, 148 p. GEOLOGY; MELLEN COMPLEX; PETROLOGY; ROUND LAKE INTRUSION; SAWYER COUNTY; UNITED-STATES; WISCONSIN;

Stuhr, S. W., and Cameron, E. N., 1976, Geology of the Round Lake intrusion, Sawyer County, Wisconsin [abs.]: 22nd Annual Institute on Lake Superior Geology, St. Paul, MN, v. 22, p. 62 GEOLOGY; MAFIC; MAGNETITE; MELLEN COMPLEX; OXIDES; PEGMATITE; ROUND LAKE INTRUSION; SAWYER COUNTY; TROCTOLITE; UNITED-STATES; WISCONSIN;

Sukow, W. W., 1987, Inside Lake Superior agates: Lapidary Journal, v. 40, no. 10, p. 50-56. AGATE; ASHLAND COUNTY; BAYFIELD- COUNTY; COOK COUNTY; COPPER; DOUGLAS-COUNTY; FRAMEWORK-SILICATES; INCLUSIONS; LAKE COUNTY; MINERAL- INCLUSIONS; MINERALOGY; MINERALS; MINNESOTA; SEDIMENTARY-ROCKS; SEDIMENTS; SILICA-MINERALS; ST. LOUIS COUNTY; UNITED-STATES; WISCONSIN;

Sun, D., Liu, X., Peng, C., and Liu, Y., 1993, Deep structural features of ore-bearing kimberlite in the North China platform: Resource Geology, v. 43, no. 5, p. 325-331. AEROMAGNETIC ANOMALY; AEROMAGNETICS; ARCHEAN BASEMENT; ASIA; CHINA; DIAMONDS; FAULTS; FUXIAN KIMBERLITE; GARNETS; GEOPHYSICS; GRAVITY; GRAVITY-ANOMALIES; HEBEI KIMBERLITE; HUANREN KIMBERLITE; JIAOLIAO-LUXI UPLIFT; JILIN PROVINCE; KIMBERLITES; KIMBERLITIC INDICATOR MINERALS; LAMPROITES; LIAONING PROVINCE; MENGYIN KIMBERLITE; NORTH CHINA DEPRESSION; NORTH CHINA PLATFORM; ORDOS DEPRESSION; OVERBURDEN; PEOPLES REPUBLIC OF CHINA; PIPE; PRC; SHANDONG PROVINCE; SHEXIAN KIMBERLITE; STRUCTURAL- GEOLOGY; TAIHANG UPLIFT; TAIHANGSHAN FAULT ZONE; TANLU FAULT ZONE; TIELING KIMBERLITE; YINGXIAN KIMBERLITE;

Suszek, T., 1995, Petrography and sedimentation of the Middle Proterozoic (Keweenawan) Nonesuch Formation, western Lake Superior region: Midcontinent Rift System [abs.], in Ojakangas, R. W., Dickas, A. B., and Green, J. C., eds., Basement Tectonics 10: Proceedings of the Tenth International Conference on Basement Tectonics: Netherlands, Kluwer Academic Publishers, p. 25-28. ALLUVIAL-FANS; ASHLAND COUNTY; BAYFIELD-COUNTY; CLASTICS; CONGLOMERATE; COPPER HARBOR CONGLOMERATE; DENSITY CURRENTS; DEPOSITION; DOUGLAS-COUNTY; DRILL CORE; DRILL HOLE SURVEY; ENVIRONMENT OF DEPOSITION; FREDA-SANDSTONE; MICHIGAN; NONESUCH SHALE; ORONTO-GROUP; PETROGRAPHY; SANDSTONE; SEDIMENTARY STRUCTURES; SEDIMENTARY-ROCKS; SEDIMENTATION; SOURCE-ROCKS; TECTONICS; TURBIDITE; UNITED-STATES; UPPER-PENINSULA; WISCONSIN;

Suszek, T. J., 1989, Petrography and sedimentation of the middle Proterozoic (Keweenawan) Nonesuch Formation, western Lake Superior region, Midcontinent Rift Zone [abs.]: 35th Annual Institute on Lake Superior Geology, Duluth, MN, v. 35, p. 97-98. BAYFIELD-COUNTY; BEAR- CREEK; COPPER HARBOR CONGLOMERATE; DOUGLAS-COUNTY; FREDA-SANDSTONE; MICHIGAN; NONESUCH SHALE; ORONTO- GROUP; PETROGRAPHY; SANDSTONE; SEDIMENTARY-PETROLOGY; SEDIMENTARY-ROCKS; SEDIMENTATION; SEDIMENTS; UNITED-STATES; WISCONSIN;

---, 1991, Petrography and sedimentology of the Middle Proterozoic (Keweenawan) Nonesuch Formation, western Lake Superior region, Midcontinent Rift System [M.S. Thesis]: University of Minnesota, Duluth, 209 p. ALLUVIAL-FANS; ASHLAND COUNTY; BAYFIELD-COUNTY; COPPER HARBOR CONGLOMERATE; DELTAIC; DENSITY CURRENTS; DEPOSITION; DIAGENESIS; DOUGLAS-COUNTY; DRILL CORE; FREDA- SANDSTONE; LACUSTRINE; MICHIGAN; NONESUCH SHALE; ORONTO-GROUP; PETROGRAPHY; SEDIMENTARY STRUCTURES; SEDIMENTARY-ROCKS; SEDIMENTOLOGY; SHEETFLOODS; TECTONICS; TURBIDITY-CURRENTS; UNITED-STATES; UPPER- PENINSULA; WISCONSIN;

163 Sutcliffe, R. H., 1984, Late Proterozoic rifting in the Lake Superior and Nipigon plate [abs.]: Geological Association of Canada Program with Abstracts, v. 9, p. 109. CANADA; NIPIGON PLATE; ONTARIO; PLATE TECTONICS; RIFTING;

---, 1986, Petrology, mineral chemistry and tectonics of Proterozoic rift-related igneous rocks at Lake Nipigon, Ontario [Ph.D. Dissertation]: University of Western Ontario, London, Ontario, Canada, 325 p. ANOROGENIC; CANADA; DIABASE; DISTRICT OF THUNDER BAY; ENGLISH BAY GRANITE; GEOCHEMISTRY; LAKE NIPIGON; LAMPROPHYRE; LOWER-PROTEROZOIC; MINERAL CHEMISTRY; ONTARIO; PETROLOGY; SILLS; TECTONICS;

---, 1987, Petrology of Middle Proterozoic diabases and picrites from Lake Nipigon, Canada: Contributions to Mineralogy and Petrology, v. 96, p. 201-211. CANADA; DIABASE; DISTRICT OF THUNDER BAY; GEOCHEMISTRY; LAKE NIPIGON; LOGAN SILLS; NIPIGON PLATE; ONTARIO; PETROLOGY; PICRITES; RARE-EARTH ELEMENTS; REE; TRACE ELEMENT ANALYSES; WHOLE ROCK ANALYSES;

---, 1991, Proterozoic geology of the Lake Superior area, in Thurston, P. C., ed., Geology of Ontario:, Ontario Geological Survey, Special Volume 4, p. 627-660. AGATE POINT RHYOLITE; ALKALIC COMPLEX; ALKALINE; ALKALINE INTRUSION; AMETHYST; ANIMIKIE; ANIMIKIE GROUP; BARAGA DIKES; BAYFIELD-GROUP; BLACK BAY PENINSULA; CANADA; CARBONATITE; CLAY-HOWELLS ALKALIC COMPLEX; COLDWELL COMPLEX; COPPER; COPPERCORP DEPOSIT; CRYSTAL LAKE INTRUSION; DIABASE; DIKES; DISTRICT OF ALGOMA; DISTRICT OF THUNDER BAY; ENGLISH BAY ALKALI GRANITE; ENGLISH BAY GRANITE; FIRESAND RIVER CARBONATITE COMPLEX; GEOCHEMISTRY; GEOCHRONOLOGY; GEOLOGY; GRABENS; GUNFLINT FORMATION; GUNFLINT IRON- FORMATION; IRON-FORMATION; JACOBSVILLE-SANDSTONE; JOGRAN PORPHYRY DEPOSIT; KAPUSKASING STRUCTURAL ZONE; KEWEENAWAN-SUPERGROUP; KILLALA LAKE ALKALIC COMPLEX; LACKNER LAKE ALKALIC COMPLEX; LAKE NIPIGON; LAKE SUPERIOR; LAMPROPHYRE; LOGAN SILLS; LOWER-PROTEROZOIC; MAMAINSE POINT; MAMAINSE POINT FORMATION; MELLEN COMPLEX; MICHIGAN; MICHIPICOTEN ISLAND FORMATION; MINERAL DEPOSITS; MINERALIZATION; MINNESOTA; MOSS LAKE INTRUSION; NEMEGOSENDA LAKE ALKALIC COMPLEX; NICKEL; NIPIGON EMBAYMENT; NIPIGON SILLS; NORMAL-FAULTS; NORTH SHORE VOLCANIC GROUP; ONTARIO; ORONTO-GROUP; OSLER GROUP; PARDEE TOWNSHIP; PENOKEAN OROGENY; PINE RIVER-MOUNT MOLLIE INTRUSION; PORT COLDWELL; PORTAGE LAKE VOLCANICS; POWDER MILL GROUP; RARE-EARTH ELEMENTS; REE; REVERSE-FAULTS; ROVE FORMATION; SANDSTONE; SEDIMENTARY-ROCKS; SEDIMENTS; SIBLEY GROUP; SILLS; SILVER; SLATE ISLANDS; ST. IGNACE COMPLEX; ST. IGNACE ISLAND; STRATIGRAPHY; STRUCTURAL-GEOLOGY; SUPERIOR PROVINCE; THIEL FAULT; TRACE ELEMENT ANALYSES; TRANS SUPERIOR TECTONIC ZONE; TRIBAG MINE; UNITED- STATES; UPPER-PENINSULA; URANIUM; VEINS; VOLCANIC ROCKS; WHOLE ROCK ANALYSES; WISCONSIN;

Sutcliffe, R. H., and Greenwood, R. C., 1982, Geology of the Lake Nipigon area, in Wood, J., White, O. L., Barlow, R. B., and Colvine, A. C., eds., Summary of field work, 1982:, Ontario Geological Survey, Miscellaneous Paper 106, p. 19-23. CANADA; DISTRICT OF THUNDER BAY; GEOLOGY; LAKE NIPIGON; LOGAN SILLS; NIPIGON PLATE; ONTARIO; SEDIMENTS; SIBLEY GROUP; SILLS;

Sutcliffe, R. H., and Smith, A. R., 1988, Geology of the St. Ignace Island volcanic plutonic complex, in Summary of field work and other activities 1988:, Ontario Geological Survey, Miscellanceous Paper 141, p. 368-373. BASALT; CANADA; DISTRICT OF THUNDER BAY; GABBRO; GEOLOGY; IGNEOUS-ROCKS; ONTARIO; OSLER GROUP; RHYOLITE; RING DIKE; ST. IGNACE COMPLEX; ST. IGNACE FORMATION; ST. IGNACE ISLAND; STRATOVOLCANO; VOLCANIC ROCKS;

Sweet, E. T., 1878, Report on Douglas and Bayfield Counties:, Wisconsin Geological Survey, Annual Report, 1977, BAYFIELD-COUNTY; COPPER; DOUGLAS-COUNTY; ECONOMIC GEOLOGY; HISTORICAL-GEOLOGY; SEDIMENTARY-ROCKS; SEDIMENTS; UNITED- STATES; WISCONSIN;

Symons, D. T. A., 1992, Paleomagnetism of the Keweenawan Chipman Lake and Seabrook Lake carbonatite complexes, Ontario: Canadian Journal of Earth Sciences, v. 29, p. 1215-1223. CANADA; CARBONATITE; CHIPMAN LAKE; DISTRICT OF COCHRANE; DISTRICT OF THUNDER BAY; GEOPHYSICS; ONTARIO; PALEOMAGNETISM; SEABROOK LAKE;

Tabet, D. E., 1974, Structure and petrology of the Mellen igneous intrusive complex near Mellen, Wisconsin [M.S. Thesis]: University of Wisconsin, Madison, 81 p. MELLEN COMPLEX; PETROLOGY; STRUCTURAL-GEOLOGY; UNITED-STATES; WISCONSIN;

Tabet, D. E., and Mangham, J. R., 1978, The geology of the eastern Mellen intrusive complex, Wisconsin: Geoscience Wisconsin, v. 3, p. 1-19. AREAL-GEOLOGY; ASHLAND COUNTY; BAD RIVER DOLOMITE; BESSEMER-QUARTZITE; CHEQUAMEGON-FORMATION; COPPER HARBOR CONGLOMERATE; DEVILS ISLAND FORMATION; IRON-COUNTY; IRONWOOD IRON FORMATION; LOWER-PROTEROZOIC; MELLEN COMPLEX; ORIENTA-FORMATION; ORONTO-GROUP; PALMS-QUARTZITE; SEDIMENTARY-ROCKS; SEDIMENTS; TYLER- FORMATION; UNITED-STATES; WISCONSIN;

Taib, N. I., 1989, A carbon isotope study of the Babbitt Cu-Ni deposit, Duluth Complex, northeastern Minnesota: The devolatization of graphic-carbon bearing metasediments and the resulting contamination of the magma [M.S. Thesis]: Indiana University, Bloomington, 86 p. ANIMIKIE; ANIMIKIE GROUP; DRILL HOLES; B1-136; B1-146; B1-156; B1-214; B1-221; BABBITT; CARBON ISOTOPES; CONTACT AUREOLE; CONTACT METAMORPHISM; COPPER; DDH MDD2; DEVOLATILIZATION; DULUTH COMPLEX; GRAPHITE; LAYERED INTRUSION; LOWER- PROTEROZOIC; METAMORPHISM; MINERAL DEPOSIT; MINERALIZATION; MINNAMAX; MINNESOTA; NICKEL; ORE DEPOSIT; PARTRIDGE RIVER INTRUSION; SEDIMENTARY-ROCKS; ST. LOUIS COUNTY; STABLE-ISOTOPES; SULFIDE; SULFIDES; UNITED- STATES; VIRGINIA FORMATION;

Taib, N. I., and Ripley, E. M., 1986, Carbon isotopic studies of the Babbitt Cu-Ni deposit, Duluth Complex, Minnesota [abs.]: Geological Society of America Abstracts with Programs, v. 18, p. 768. BABBITT; CARBON ISOTOPES; COPPER; DULUTH COMPLEX; LAYERED INTRUSION; MINERAL DEPOSIT; MINERALIZATION; MINNAMAX; MINNESOTA; NICKEL; ORE DEPOSIT; PARTRIDGE RIVER INTRUSION; ST. LOUIS COUNTY; STABLE-ISOTOPES; SULFIDE; SULFIDES; UNITED-STATES;

164 Talwani, M., and Worzel, J. L., 1959, Rapid computation of the gravitational attraction of three dimensional bodies of arbitrary shape: Journal of Geophysical Research, v. 64, p. 49-59. GEOPHYSICS; GRAVITY; UNITED-STATES;

Tanton, T. L., 1925, Evidence of liquid immiscibility in a silicate magma, Agate Point, Ontario: Journal of Geology, v. 33, p. 629-641. AGATE POINT RHYOLITE; CANADA; DISTRICT OF THUNDER BAY; GEOCHEMISTRY; IMMISCIBILITY; LIQUID IMMISCIBILITY; MAJOR ELEMENT ANALYSES; ONTARIO; PETROGRAPHY; RHYOLITE; VOLCANIC ROCKS; WHOLE ROCK ANALYSES;

---, 1931, Fort William and Port Arthur, and Thunder Cape map areas, Thunder Bay District, Ontario:, Canada Geological Survey, Memoir 167, 331 p. AMETHYST; ANNABERGITE; ARGENTITE; ARSENIDES; BARITE; BASALT; BLACK BAY; CALCITE; CANADA; CERARGYRITE; CHALCOPYRITE; CONGLOMERATE; CROSS-BEDDING; DISTRICT OF THUNDER BAY; DOLOMITE; ECONOMIC GEOLOGY; EDWARD ISLAND; ERYTHRITE; FLUORITE; FORT WILLIAM; GALENA; GEOLOGY; LOON LAKE; MAP; MARCASITE; MINERAL DEPOSITS; MINERALIZATION; MINERALOGY; NATIVE-SILVER; NICOLITE; NIPIGON BAY; ONTARIO; OSLER GROUP; PARAGENESIS; PORT ARTHUR; PYROLUSITE; QUARTZ; RABBIT MOUNTAIN MINE; RHODOCROSITE; SALTER ISLAND; SANDSTONE; SEDIMENTARY STRUCTURES; SEDIMENTARY-ROCKS; SEDIMENTS; SHALE; SIBLEY GROUP; SILVER; SILVER ISLET MINE; SIMPSON ISLAND; SPHALERITE; ST. IGNACE ISLAND; SULFIDES; TETRAHEDRITE; THICKNESS; THUNDER CAPE; VOLCANIC ROCKS;

---, 1935, Copper-nickel occurrences in Pigeon River area, Ontario:, Canada Geological Survey, Paper 35-D, 11 p. CANADA; COPPER; CRYSTAL LAKE INTRUSION; DISTRICT OF THUNDER BAY; MINERAL DEPOSITS; MINNESOTA; NICKEL; ONTARIO; PARDEE TOWNSHIP; PIGEON RIVER; UNITED-STATES;

---, 1936, Pigeon River area, Thunder Bay District: Geological Survey of Canada, Map 354A-356A, scale 1:63,360. ANIMIKIE; CANADA; CRYSTAL LAKE INTRUSION; DIKES; DISTRICT OF THUNDER BAY; LOWER-PROTEROZOIC; MAP; ONTARIO; PARDEE TOWNSHIP; PIGEON RIVER DIKES; PINE RIVER-MOUNT MOLLIE INTRUSION; ROVE FORMATION;

---, 1938, Quetico Sheet (east half), Thunder Bay and Rainy River districts, Ontario: Canada Geological Survey, Map, Map 432A. CANADA; DISTRICT OF THUNDER BAY; ONTARIO; QUETICO SHEET; RAINY RIVER DISTRICT;

Taylor, H. P., Jr., 1974, Oxygen and hydrogen isotope evidence for large-scale circulation and interaction between ground waters and igneous intrusions, with particular reference to the San Juan volcanic field, Colorado, in Hofmann, A. W., Giletti, B. J., Yoder, H. S., Jr., and Yund, R. A., eds., Geochemical transport and kinetics: Washington, D.C., Carnegie Institution, Publication 634, p. 299-324. AFRICA; ALAMOSA STOCK; ANORTHOSITIC SERIES; BOHEMIA MINING DISTRICT; BUSHVELD COMPLEX; CENOZOIC; COLORADO; DULUTH; DULUTH COMPLEX; DULUTH LAYERED SERIES; ENDION SILL; ENGER TOWER; GRANOPHYRE; GROUNDWATER; HYDROGEN ISOTOPES; HYDROTHERMAL; IGNEOUS INTRUSIONS; LANE COUNTY; LAYERED INTRUSION; LOWER-PROTEROZOIC; METEORIC; MINNESOTA; MISSOURI; MUSKOX INTRUSION; NORTHWEST TERRITORIES; OREGON; OXYGEN ISOTOPES; PHANEROZOIC; PIGEON POINT SILLS; SAN JUAN MOUNTAINS; SAN JUAN VOLCANIC FIELD; SILLS; SILVERTON CALDERA; SOUTH AFRICA; ST. FRANCOIS MOUNTAINS; ST. LOUIS COUNTY; STABLE-ISOTOPES; TERTIARY; UNITED-STATES;

Taylor, I. E., 1987, Sedimentary processes on Keweenawan alluvial fans; the Copper Harbor Formation of the Lake Superior basin [abs.]: Geological Society of America Abstracts with Programs, v. 19, no. 7, p. 865. ALLUVIAL-FANS; CANADA; CLASTIC-ROCKS; CONGLOMERATE; COPPER HARBOR CONGLOMERATE; CROSS-STRATIFICATION; FLUVIAL-FEATURES; LAKE SUPERIOR; ONTARIO; ORONTO- GROUP; PLANAR BEDDING STRUCTURE; SANDSTONE; SEDIMENTARY STRUCTURES; SEDIMENTARY-PETROLOGY; SEDIMENTARY-ROCKS; SEDIMENTS;

---, 1989, Middle and upper Keweenawan siliciclastics of the Lake Superior basin [Ph.D. Dissertation]: McMaster University, Hamilton, Ontario, Canada, 319 p. CLASTICS; SEDIMENTARY-ROCKS; SEDIMENTS; UNITED-STATES;

Taylor, I. E., and Middleton, G. V., 1990, Aeolian sandstones in the Copper Harbor Formation, late Proterozoic, Lake Superior basin: Canadian Journal of Earth Sciences, v. 27, no. 10, p. 1339-1347. AEOLIAN; CLASTIC-ROCKS; COPPER HARBOR CONGLOMERATE; CROSS- STRATIFICATION; LAKE; ORONTO-GROUP; PALEOCLIMATOLOGY; PLANAR BEDDING STRUCTURES; SANDSTONE; SEDIMENTARY STRUCTURES; SEDIMENTARY-ROCKS; SEDIMENTATION; SEDIMENTS; STRATIGRAPHY; TRANSPORT; WIND-TRANSPORT;

Taylor, N. C. D., 1866, Report on the copper district of Kettle River, incorporating Mr. James Hall's estimates of the copper prospects of the district:, Minnesota Executive Document, 2 p. CHENGWATANA VOLCANIC GROUP; COPPER; KETTLE RIVER; MINNESOTA; UNITED-STATES; VOLCANIC ROCKS;

Taylor, P. T., 1989, Investigation of the Mid-Continent geophysical anomaly with MAGSAT and upward continued aeromagnetic data [abs.]: Eos (American Geophysical Union Transactions), v. 70, no. 15, p. 273. AEROMAGNETIC ANOMALY; AEROMAGNETIC SURVEY; AEROMAGNETICS; GEOPHYSICS; LAKE SUPERIOR; LOWER PENINSULA; MAGSAT; MAGSAT ANOMALY; MICHIGAN; MICHIGAN- BASIN; MINNESOTA; PROCESSING; UNITED-STATES; WISCONSIN;

Taylor, R. B., 1953, Investigations on the Duluth gabbro [M.S. Thesis]: University of Minnesota, Minneapolis, 54 p. DULUTH COMPLEX; LAYERED INTRUSION; MINNESOTA; UNITED-STATES;

---, 1955, Petrology and petrography of the Duluth gabbro complex near Duluth, Minnesota [Ph.D. Dissertation]: University of Minnesota, Minneapolis, 108 p. DULUTH; DULUTH COMPLEX; DULUTH LAYERED SERIES; LAYERED INTRUSION; MINNESOTA; PETROGRAPHY; PETROLOGY; ST. LOUIS COUNTY; UNITED-STATES;

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166 Thingvold, D., 1976, The Regional Copper-Nickel Study: Physical sciences program: Naturalist, v. 27, no. 34, p. 23-31. ATMOSPHERE; CHEMISTRY; CLIMATOLOGY; COPPER; DULUTH COMPLEX; FLUORIDE; HYDROLOGY; LAKE COUNTY; LAYERED INTRUSION; METEOROLOGY; MINNESOTA; NICKEL; NITROGEN DIOXIDE; NO2; NOISE; PARTICULATES; PRECIPITATION; REGIONAL COPPER- NICKEL STUDY; SO2; ST. LOUIS COUNTY; SULFUR DIOXIDE; UNITED-STATES;

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Thompson, M. D., McGinnis, L. D., Ervin, C. P., and Mudrey, M. G., Jr., 1990, Evolution of an aborted late Precambrian continental margin beneath Lake Superior [abs.]: Eos (American Geophysical Union Transactions), v. 71, p. 1563. CANADA; FAULT; GEOPHYSICAL-SURVEYS; GEOPHYSICS; GLIMPCE; LAKE SUPERIOR; ONTARIO; ORONTO-GROUP; PLATE TECTONICS; REFLECTION; RIFT-ZONES; SEDIMENTARY-ROCKS; SEDIMENTS; SEISMIC; SEISMIC-SURVEYS; TECTONOPHYSICS; THRUST-FAULTS; UNITED-STATES; UPPER- PRECAMBRIAN;

Thompson, M. D., McGinnis, L. D., Mudrey, M. G., and Ervin, C. P., 1991, Midcontinent rift structure interpreted from the GNI/Argonne seismic data set [abs.]: 37th Annual Institute on Lake Superior Geology, Eau Claire, WI, v. 37, p. 93-94. GEOPHYSICS; LAKE SUPERIOR; SEISMIC; SEISMIC-SURVEYS; STRUCTURAL-GEOLOGY; UNITED-STATES;

Thompson, M. E., Ervin, C. P., Mudrey, M. G., Jr., and Brown, B. A., 1990, Tectonic ramifications of GNI/Argonne Lake Superior seismic data [abs.]: 36th Annual Institute on Lake Superior Geology, Thunder Bay, ONT, v. 36, p. 109. BAYFIELD-COUNTY; BOUGUER-ANOMALIES; FAULTS; GEOPHYSICS; GRAVITY; GRAVITY-ANOMALIES; IRON-COUNTY; LAKE SUPERIOR; PURITAN-BATHOLITH; SEDIMENTARY-ROCKS; SEDIMENTS; STRUCTURAL-GEOLOGY; TECTONICS; UNITED-STATES; WISCONSIN;

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Tschopp, D. G., 1975, Distribution of heavy minerals as related to mean grain size and sorting in upper Cambrian sandstones of western Wisconsin [M.S. Thesis]: Northern Illinois University, DeKalb CAMBRIAN; CLASTIC-ROCKS; EAU CLAIRE FORMATION; HEAVY MINERALS; JACOBSVILLE-SANDSTONE; MOUNT SIMON FORMATION; PALEOZOIC; PHANEROZOIC; PROVENANCE; SANDSTONE; SEDIMENTARY-PETROLOGY; SEDIMENTARY-ROCKS; SEDIMENTATION; SEDIMENTS; TERRIGENOUS; UNITED-STATES; WISCONSIN;

Tull, R., Donaldson, M., and Bauman, E., 1976, The Regional Copper-Nickel Study: The study of impacts from people and money related to copper- nickel development: Naturalist, v. 27, no. 34, p. 38-45. COPPER; DEVELOPMENT; DULUTH COMPLEX; ECONOMICS; LAYERED INTRUSION; MINING; MINNESOTA; NICKEL; REGIONAL COPPER-NICKEL STUDY; ST. LOUIS COUNTY; UNITED-STATES;

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168 Turek, P. E., Smith, P. E., and Symons, D. T. A., 1985, U-Pb geochronology of the Coldwell Complex, northwestern Ontario, Canada: Canadian Journal of Earth Sciences, v. 22, p. 621-626. AGE; AGE DATING; ALKALIC COMPLEX; ALKALINE; ALKALINE INTRUSION; CANADA; COLDWELL COMPLEX; DISTRICT OF THUNDER BAY; GEOCHRONOLOGY; ONTARIO; PORT COLDWELL; SUPERIOR PROVINCE; URANIUM-LEAD;

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---, 1979, The mineralogy and petrology of the Partridge River troctolite in the Babbitt-Hoyt Lakes region of the Duluth Complex, northeastern Minnesota [Ph.D. Dissertation]: Miami University, Oxford, Ohio, 179 p. DRILL HOLES; B1-297; B1-304; B1-364; B1-91; BABBITT; BATHTUB; COPPER; DULUTH COMPLEX; HOYT LAKES; LAYERED INTRUSION; MINERAL DEPOSIT; MINERALIZATION; MINERALOGY; MINNAMAX; MINNESOTA; NICKEL; ORE DEPOSIT; PARTRIDGE RIVER INTRUSION; PETROLOGY; ST. LOUIS COUNTY; SULFIDE; SULFIDES; UNITED-STATES;

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Tyson, R. M., Bonnichesen, B., and Shirley, D. H., 1985, Precious metals associated with sulfide mineralization in the Ely-Hoyt Lakes district, Duluth Complex, Minnesota [abs.]: The Canadian Mineralogist, v. 23, p. 331. COPPER; DULUTH COMPLEX; ELY; HOYT LAKES; LAYERED INTRUSION; MINERALIZATION; MINNESOTA; NICKEL; PGE; PLATINUM-GROUP ELEMENTS; SILVER; ST. LOUIS COUNTY; SULFIDES; UNITED-STATES;

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---, 1986, Platinum group elements, nickel and copper in the Ely-Hoyt Lakes region of the Duluth Complex. SME Fall Meeting; Sept. 1986., St. Louis, MO, pre-print, 13 p. COPPER; DULUTH COMPLEX; HOYT LAKES; LAYERED INTRUSION; MINERALIZATION; MINERALOGY; MINNESOTA; NICKEL; ORE DEPOSIT; PARTRIDGE RIVER; PGE; PLATINUM-GROUP ELEMENTS; SULFIDES; UNITED-STATES;

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Tyson, R. M., Molling, P. A., and Chang, L. L. Y., 1979, Deuteric alteration in the Partridge River troctolite, Duluth Complex, Minnesota [abs.]: Geological Society of America Abstracts with Programs, v. 11, p. 258. ALTERATION; BABBITT; BATHTUB; DEUTERIC; DULUTH COMPLEX; LAYERED INTRUSION; MINERAL DEPOSIT; MINNAMAX; MINNESOTA; PARTRIDGE RIVER; PARTRIDGE RIVER INTRUSION; PETROLOGY; ST. LOUIS COUNTY; TIGER BOY; UNITED-STATES;

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Van der Voo, R., and Watts, D. R., 1978, Paleomagnetic results from igneous and sedimentary rocks from the Michigan Basin borehole: Journal of Geophysical Research, v. 83, no. B12, p. 5844-5848. BOREHOLES; CLASTIC-ROCKS; CORES; FREDA-SANDSTONE; GEOPHYSICS; GRATIOT-COUNTY; IGNEOUS-ROCKS; LOWER PENINSULA; MCCLURE-SPARKS NO. 1; MICHIGAN; MICHIGAN-BASIN; NATURAL REMANENT MAGNETIZATION; NONESUCH SHALE; ORONTO-GROUP; PALEOMAGNETISM; POLE-POSITIONS; RED-BEDS; REMANENT MAGNETISM; SANDSTONE; SEDIMENTARY-ROCKS; SEDIMENTS; STRATIGRAPHY; UNITED-STATES; WELL-LOGGING;

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Van Horn, J. E., 1980, Seismotectonic study of the southwestern Lake Superior region utilizing the Upper Michigan-northern Wisconsin seismic network [M.S. Thesis]: Michigan Technological University, Houghton, 146 p. ARRAYS; CRUST; EARTHQUAKES; EPICENTERS; GEOPHYSICAL-SURVEYS; GEOPHYSICS; JACOBSVILLE-SANDSTONE; MICHIGAN; NEOTECTONICS; SANDSTONE; SEDIMENTARY- ROCKS; SEDIMENTS; SEISMIC-SURVEYS; SEISMOLOGY; SEISMOTECTONICS; STRUCTURAL-GEOLOGY; UNITED-STATES; WISCONSIN;

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Van Lier, K. E., and Deutsch, M., 1958, Reconnaissance of the ground-water resources of Chippewa County, Michigan:, Michigan Geological Survey, Progress Report No. 17, CHIPPEWA-COUNTY; EXPLORATION; FELSIC; FELSITE; GAS; GROUNDWATER; OIL; UNITED-STATES;

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170 Van Schmus, W. R., 1976, Early and Middle Proterozoic history of the Great Lakes area, North America: Philosophical Transactions of the Royal Society of London, v. 280, p. 605-628. ANIMIKIE GROUP; ARCHEAN; BARAGA GROUP; CANADA; CHOCOLAY-GROUP; COLORADO; CORONATION GEOSYNCLINE; DISTRICT OF SUDBURY; GEOCHRONOLOGY; GREENLAND; GRENVILLE OROGENY; HURONIAN SUPERGROUP; LOWER-PROTEROZOIC; MARQUETTE RANGE SUPERGROUP; MENOMINEE-GROUP; METAMORPHISM; MICHIGAN; MINNESOTA; MODEL; ONTARIO; PAINT RIVER GROUP; PENOKEAN; PENOKEAN OROGENY; PLATE TECTONICS; SUDBURY IGNEOUS COMPLEX; SUDBURY STRUCTURE; UNITED-STATES; UPPER-PENINSULA; WISCONSIN; WISCONSIN MAGMATIC TERRANE; WOLF RIVER BATHOLITH; WYOMING;

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Veith, D. L., Pojar, M. G., Ryan, W. A., and Hakomanki, S. K., 1976, The Regional Copper-Nickel Study: Technical assessment program: Naturalist, v. 27, no. 34, p. 14-22. BENEFICIATION; COPPER; DULUTH COMPLEX; ENVIRONMENT; ENVIRONMENTAL; EXPLORATION; HYDROMETALLURGY; LAKE COUNTY; LAYERED INTRUSION; MINERAL PROCESSING; MINNESOTA; NICKEL; PROCESS METALLURGY; PYROMETALLURGY; REGIONAL COPPER-NICKEL STUDY; ST. LOUIS COUNTY; SULFIDE; SULFIDES; UNITED- STATES;

171 Veith, K. F., 1966, A geophysical study of a portion of the Midcontinent Gravity High [M.S. Thesis]: University of Minnesota, Minneapolis, 56 p. AEROMAGNETIC ANOMALY; AEROMAGNETIC SURVEY; AEROMAGNETICS; BASALT; BOUGUER-ANOMALIES; DRILL HOLE; GEOPHYSICS; GRAVITY; GRAVITY-ANOMALIES; GRAVITY-SURVEYS; HORSTS; HUDSON-AFTON HORST; MAGNETIC-ANOMALIES; MAGNETICS; MINNESOTA; SAINT CROIX HORST; STRUCTURAL-GEOLOGY; THICKNESS; TWIN CITIES BASIN; UNITED-STATES; VOLCANIC ROCKS;

Venzke, E. A., 1990, The geology of the Greenwood Lake area, Duluth Complex, Lake County, northwestern Minnesota [abs.]: 36th Annual Institute on Lake Superior Geology, Thunder Bay, ONT, v. 36, p. 112-114. 27015; ANORTHOSITE; ANORTHOSITIC SERIES; DULUTH COMPLEX; FELSIC SERIES; FERROGABBRO; GABBRO; GLACIAL GEOLOGY; GRANOPHYRE; GREENWOOD LAKE; LAKE COUNTY; LAYERED INTRUSION; MINNESOTA; MT. WEBER; NORTH SHORE VOLCANIC GROUP; S-1; SNAKE ANOMALY; TOIMI DRUMLIN FIELD; TROCTOLITE; TROCTOLITIC SERIES; UNITED-STATES; VOLCANIC ROCKS;

Vifian, A. E., and Iwasaki, I., 1968, Mineralogical and beneficiation studies of the copper-nickel bearing Duluth Gabbro, in Proceedings of the 29th Annual Mining Symposium, and 41st Annual Meeting of the American Institute of Mining and Metallurgical Engineers, Minnesota Section, Duluth: Minneapolis, University of Minnesota, p. 183-194. BENEFICIATION; COPPER; DULUTH COMPLEX; LAYERED INTRUSION; MINERAL PROCESSING; MINERALOGY; MINNESOTA; NICKEL; UNITED-STATES;

Vifian, A. R., and Iwasaki, I., 1968, Mineralogical and beneficiation studies of the copper-nickel bearing Duluth Gabbro: Transactions of the Institute of Mining Engineers, v. 241, p. 421-431. BENEFICIATION; COPPER; DULUTH COMPLEX; LAYERED INTRUSION; MINERAL PROCESSING; MINERALOGY; MINNESOTA; NICKEL; SULFIDE; SULFIDES; UNITED-STATES;

Vifian, A. R., Iwasaki, I., and Bleifuss, R. L., 1967, Concentration of a copper-nickel ore:, Mines Experiment Station, University of Minnesota, Progress Report 16, 48 p. BENEFICIATION; COPPER; DULUTH COMPLEX; LAYERED INTRUSION; METALLURGY; MINERAL PROCESSING; MINNESOTA; NICKEL; SULFIDE; SULFIDES; UNITED-STATES;

Vincent, S. A., and Yaskawa, K., 1968, Phenomenon of partial self-reversal in Keweenawan rocks; Part 2, Magnetization of upper Keweenawan lavas and sediments and of lower Keweenawan dikes: Journal of Geophysical Research, v. 73, p. 2753-2767. DIKES; MAGNETIZATION; REVERSALS; SEDIMENTS; UNITED-STATES; VOLCANIC ROCKS;

Vincenz, S. A., 1968, Phenomenon of partial self-reversal in Keweenawan rocks, 1. Magnetization of Portage Lake lavas: Journal of Geophysical Research, v. 73, p. 2729-2752. GEOPHYSICS; MICHIGAN; PALEOMAGNETISM; PORTAGE LAKE VOLCANICS; REVERSE MAGNETIZATION; UNITED-STATES; UPPER-PENINSULA; VOLCANIC ROCKS;

Vincenz, S. A., and Yaskawa, K., 1968, Phenomenon of partial self-reversal in Keweenawan rocks: Pt. 2, Magnetization of upper Keweenawan lavas and sediments and of lower Keweenawan dikes: Journal of Geophysical Research, v. 73, no. 8, p. 2753-2767. BARAGA COUNTY; COPPER HARBOR CONGLOMERATE; CURRIE TEMPERATURE; DIABASE; DIKES; FREDA-SANDSTONE; GEOPHYSICS; HEMATITE; IGNEOUS- ROCKS; ILMENITE; KEWEENAW PENINSULA; MAGNETIC-PROPERTIES; MAGNETITE; MICHIGAN; MICHIGAN COPPER DISTRICT; NONESUCH SHALE; ONTONAGON-COUNTY; ORONTO-GROUP; PALEOMAGNETISM; PARTIAL SELF REVERSAL; PORTAGE LAKE VOLCANICS; REVERSALS; SEDIMENTARY-ROCKS; SEDIMENTS; SPINEL; UNITED-STATES; UPPER-PENINSULA; VOLCANIC ROCKS; WHITE PINE MINE;

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Vos, M. A., 1976, Amethyst deposits of Ontario:, Ontario Department of Mines, Mining Natural Resources, Geological Guidebook No. 5, 99 p. AMETHYST; CANADA; DISTRICT OF THUNDER BAY; GEMSTONES; GUIDEBOOK; MINERAL DEPOSITS; ONTARIO; PROTEROZOIC;

Wadsworth, M. E., 1887, Peridotites, gabbros, diabases and andesytes of Minnesota: Geological and Natural History Survey of Minnesota, v., p. 129. ANDESITE; DIABASE; DULUTH COMPLEX; GABBRO; LAYERED INTRUSION; MAFIC; MINNESOTA; PERIDOTITE; ULTRAMAFIC; UNITED-STATES;

---, 1893, Sketch of the iron, gold, and copper districts of Michigan:, Michigan State Board Geological Survey, Report for 1891-92, CLASTIC DIKE; COPPER; COPPER-ORES; GOLD; IRON; IRON ORE; IRON-FORMATION; LOWER-PROTEROZOIC; MICHIGAN; MICHIGAN COPPER DISTRICT; MINERAL DEPOSITS; MINERALIZATION; UNITED-STATES; UPPER-PENINSULA;

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Walker, J. W. R., 1956, Preliminary report on the geology of the Jackfish-Middleton area:, Ontario Department of Mines, Geological Circular 4, ALKALIC COMPLEX; ALKALINE; ALKALINE INTRUSION; CANADA; COLDWELL COMPLEX; DISTRICT OF THUNDER BAY; GEOLOGY; JACKFISH; MIDDLETON; ONTARIO; PORT COLDWELL; PROTEROZOIC;

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Wanless, R. K., Stevens, R. D., Lachance, G. R., and Rimsaite, J. Y. H., 1966, Age determinations and geological studies:, Canada Geological Survey, Paper 65-17, 79 p. AGE DATING; CANADA; CRYSTAL LAKE INTRUSION; DISTRICT OF THUNDER BAY; GEOCHRONOLOGY; MINNESOTA; ONTARIO; PARDEE TOWNSHIP; UNITED-STATES;

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Watkinson, D. H., and Grimes, J. H., 1974, The Spanish River alkalic rock - carbonatite complex, Twps. 107 and 108, Ontario [abs.]: 20th Annual Institute on Lake Superior Geology, Sault Ste. Marie, v. 20, p. 38. AGE DATING; ALKALIC COMPLEX; ALKALINE; ALTERATION;

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Watkinson, D. H., Mainwaring, P. R., and Lum, H. K., 1973, Petrology and copper mineralization of the Coldwell Complex, Ontario [abs.]: Geological Society of America Abstracts with Programs, v. 5, p. 856. ALKALIC COMPLEX; ALKALINE; ALKALINE INTRUSION; CANADA; COLDWELL COMPLEX; COPPER; DISTRICT OF THUNDER BAY; MINERALIZATION; ONTARIO; PETROLOGY; PORT COLDWELL; SUPERIOR PROVINCE;

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Watkinson, D. H., Whittaker, P. J., and Jones, P. L., 1983, Platinum group elements in the Eastern Gabbro, Coldwell Complex, northwestern Ontario, in Geoscience Research Grant Program, Summary of Research 1982-1983:, Ontario Geological Survey, Miscellaneous Paper 113, p. 183-191. ALKALIC COMPLEX; ALKALINE; ALKALINE INTRUSION; CANADA; COLDWELL COMPLEX; DISTRICT OF THUNDER BAY; EASTERN GABBRO; MINERALIZATION; ONTARIO; PGE; PLATINUM-GROUP ELEMENTS; PORT COLDWELL; SUPERIOR PROVINCE;

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Watowich, S. N., Malcolm, J. B., and Parker, P. D., 1981, A review of the Duluth Gabbro Complex of Minnesota as a domestic source of critical and strategic metals. SME-AIME Fall Meeting, Denver, Colorado, Pre-Print 81-351, 9 p BABBITT; COPPER; CRITICAL METALS; DOMESTIC; DULUTH COMPLEX; LAYERED INTRUSION; MINERAL DEPOSIT; MINERALIZATION; MINNAMAX; MINNESOTA; NICKEL; ORE DEPOSIT; PARTRIDGE RIVER INTRUSION; ST. LOUIS COUNTY; STRATEGIC METALS; SULFIDE; SULFIDES; UNITED-STATES;

Watts, D., and Van der Voo, R., 1976, Further paleomagnetic results from the Michigan Basin deep borehole [abs.]: Eos (American Geophysical Union Transactions), v. 57, p. 760. DECLINATION; DIAGENESIS; GABBRO; GEOPHYSICS; IGNEOUS-ROCKS; INCLINATION; MICHIGAN; MICHIGAN-BASIN; PALEOMAGNETISM; POLAR-WANDERING; POLE-POSITIONS; RED-BEDS; SEDIMENTARY-ROCKS; SEDIMENTS; STRATIGRAPHY; UNITED-STATES; UPPER-PRECAMBRIAN;

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Watts, D. R., 1979, The paleomagnetism of the Keweenawan sediments; the Eileen and Middle River sections and the Fond du Lac Formation [abs.]: Eos (American Geophysical Union Transactions), v. 60, p. 241. AMNICON-FORMATION; EILEEN-FORMATION; FOND DU LAC FORMATION; GEOPHYSICS; MIDDLE RIVER FORMATION; ORIENTA-FORMATION; PALEOMAGNETISM; PLATE TECTONICS; REMANENT-MAGNETIZATION; SEDIMENTARY-ROCKS; SEDIMENTS; STRATIGRAPHY; UNITED-STATES;

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Webb, W. W., III, 1976, Observations on the habit and nature of emplacement of copper and nickel sulphides in the Duluth Complex, northern Minnesota [B.S. Thesis]: Cornell University, Ithaca, New York COPPER; DULUTH COMPLEX; LAYERED INTRUSION; MINERALIZATION; MINNESOTA; NICKEL; ORE GENESIS; PETROGRAPHY; SULFIDE; SULFIDES; UNITED-STATES;

Weber, J. R., and Goodacre, A. K., 1960, A reconnaissance underwater gravity survey of Lake Superior, in The Earth beneath the continents:, American Geophysical Union, Geophysical Monograph 10, p. 56-65. ALKALIC COMPLEX; ALKALINE; ALKALINE INTRUSION; CANADA; COLDWELL COMPLEX; DISTRICT OF THUNDER BAY; GEOPHYSICS; GRAVITY; GRAVITY-SURVEYS; LAKE SUPERIOR; ONTARIO; PORT COLDWELL; UNITED-STATES;

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Weege, R. J., Pollock, J. P., and Calumet Geological Staff, 1972, The geology of two new mines in the native copper district: Economic Geology, v. 67, p. 622-633. ALLOUEZ GAP FAULT; CALUMET AND HECLA CONGLOMERATE MINE; CALUMET-CONGLOMERATE; CENTENNIAL NO. 3-6 MINE; CHALCOCITE; COPPER; FAULT; FOOTWALL; GEOLOGY; HOUGHTON-COUNTY; KEARSARGE

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Weege, R. J., and Schillinger, A. W., 1962, Footwall mineralization in Osceola Amygdaloid, Michigan native copper district: Transactions of the American Institute of Mining and Metallurgical Engineers, v. 223, p. 344-350. COPPER; MICHIGAN; MICHIGAN COPPER DISTRICT; MINERALIZATION; NATIVE COPPER; OSCEOLA AMYGDALOID; UNITED-STATES; UPPER-PENINSULA;

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---, 1972, Crystallization sequences in the Duluth Complex and their significance in petrogenetic problems in the upper Precambrian [abs.]: Geological Society of America Abstracts with Programs, v. 4, p. 355. CRYSTALLIZATION; DULUTH COMPLEX; EVOLUTION; LAYERED INTRUSION; MINNESOTA; PETROGENESIS; PETROLOGY; UNITED-STATES;

---, 1977, New petrologic data on the Duluth Complex: Characteristics of a magmatic system in a rift environment [abs.]: Eos (American Geophysical Union Transactions), v. 58, p. 527. DULUTH COMPLEX; LAYERED INTRUSION; MAGMATIC; MINNESOTA; PETROLOGY; RIFT; RIFTING; UNITED-STATES;

---, 1978, Relationship between mineralization and structure in the Duluth Complex [abs.]: Economic Geology, v. 73, p. 316. COOK COUNTY; COPPER; DULUTH COMPLEX; LAYERED INTRUSION; MINERALIZATION; MINNESOTA; NICKEL; ORE DEPOSIT; ORIGIN; STRUCTURAL-GEOLOGY; SULFIDES; UNITED-STATES;

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---, 1982, Similarities in the regional geology of the Midcontinent rift in the Lake Superior region and the Tertiary geology of the North Atlantic, in Walker, D., and McCallum, I. S., eds., Workshop on magmatic processes of early planetary crusts: Magma oceans and stratiform layered intrusions: Houston, Texas, Lunar and Planetary Institute, Technical Report 82-01, p. 161-164. CENOZOIC; DULUTH COMPLEX; GEOLOGY; LAKE SUPERIOR; LAYERED INTRUSION; MID-ATLANTIC RIDGE; MINNESOTA; PHANEROZOIC; RIFTING; RIFTS; TERTIARY; UNITED- STATES;

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Weiblen, P. W., Churchill, R. K., and Cooper, R. W., 1978, Structural controls on copper-nickel mineralization in the Duluth Complex:, Minnesota Geological Survey, Open-file Report, 39 p. COPPER; DULUTH COMPLEX; LAYERED INTRUSION; MINERALIZATION; MINNESOTA; NICKEL; ORE GENESIS; STRUCTURAL-GEOLOGY; SULFIDES; UNITED-STATES;

Weiblen, P. W., and Cooper, R. W., 1977, Shape, size and cooling history of troctolite-gabbroic rocks in the Duluth Complex [abs.]: 23rd Annual Institute on Lake Superior Geology, Thunder Bay, ONT, v. 23, p. 44. DULUTH COMPLEX; GABBRO; LAYERED INTRUSION; MINNESOTA; PETROGENESIS; PETROLOGY; THERMAL HISTORY; TROCTOLITE; UNITED-STATES;

Weiblen, P. W., Cooper, R. W., and Churchill, R. K., 1977, Relationship between mineralization and structure in the Duluth Complex [abs.]: Geological Society of America Abstracts with Programs, v. 9, p. 1220. COPPER; DULUTH COMPLEX; LAYERED INTRUSION; MINERALIZATION; MINNESOTA; NICKEL; ORIGIN; STRUCTURAL-GEOLOGY; SULFIDES; TRANSFORM FAULTS; UNITED-STATES;

Weiblen, P. W., and Davidson, D. M., Jr., 1972, Field trip guidebook for geology of northwestern Cook County, Minnesota:, Minnesota Geological Survey, Guidebook Series, No. 6, 75 p. ANIMIKIE; COOK COUNTY; DULUTH COMPLEX; GEOLOGY; GUIDEBOOK; LAYERED INTRUSION; LOWER-PROTEROZOIC; MINNESOTA; ROVE FORMATION; UNITED-STATES;

176 Weiblen, P. W., Davidson, D. M., Jr., Morey, G. B., and Mudrey, M. G., Jr., 1972, Geology of Cook County, in Field trip guidebook for Precambrian geology of northwestern Cook County, Minnesota:, Minnesota Geological Survey, Guidebook Series 6, p. 1-16. ANIMIKIE; DULUTH COMPLEX; GUIDEBOOK; LAYERED INTRUSION; LOGAN SILLS; LOWER-PROTEROZOIC; MINNESOTA; NATHAN'S LAYERED SERIES; ROVE FORMATION; SILLS; UNITED-STATES;

Weiblen, P. W., and Hall, H., 1967, Textures and compositions of silicate and sulfide ore minerals from mineralized zone, Duluth Gabbro Complex [abs.]: 13th Annual Institute on Lake Superior Geology, Lansing, MI, v. 13, p. 41. CHALCOPYRITE; COPPER; CUBANITE; DULUTH COMPLEX; GRAVITY SETTLING; IMMISCIBLE SULFIDE MELT; LAKE COUNTY; LAYERED INTRUSION; MINERAL CHEMISTRY; MINERALIZATION; MINNESOTA; NICKEL; OLIVINE; PENTLANDITE; PETROGRAPHY; PETROLOGY; PLAGIOCLASE; PYROXENE; PYRRHOTITE; SILICATES; SOUTH KAWISHIWI INTRUSION; SPHALERITE; SPRUCE ROAD; SULFIDES; UNITED-STATES;

Weiblen, P. W., Mathez, E. A., and Morey, G. B., 1972, Logan intrusions, in Sims, P. K., and Morey, G. B., eds., Geology of Minnesota: A Centennial Volume: St. Paul, Minnesota Geological Survey, p. 394-406. DULUTH COMPLEX; GEOLOGY; LAYERED INTRUSION; LOGAN SILLS; MINNESOTA; PETROGRAPHY; SILLS; STRUCTURAL-GEOLOGY; UNITED-STATES;

Weiblen, P. W., and Miller, J. D., Jr., 1982, The effect of country rock and tectonics on variations of plagioclase-mafic mineral compositions in layered intrusions [abs.], in Thirteenth Lunar and Planetary Science Conference: Houston, Texas, Lunar and Planetary Institute, Abstracts of Papers, p. 849. ASSIMILATION; COUNTRY ROCK; DULUTH COMPLEX; IGNEOUS PROCESS; LAYERED INTRUSION; MAFIC; MINERAL CHEMISTRY; MINNESOTA; TECTONICS; UNITED-STATES;

---, 1982, Similarities in the regional geology of intrusive rocks in the Keweenawan Midcontinent Rift, the Permian Oslo Rift, and the Tertiary geology of the North Atlantic [abs.]: 28th Annual Institute on Lake Superior Geology, International Falls, MN, v. 28, p. 50-51. ALKALIC COMPLEX; ALKALINE; ALKALINE INTRUSION; CANADA; CENOZOIC; COLDWELL COMPLEX; CRYSTAL LAKE INTRUSION; DIABASE; DIKES; DISTRICT OF THUNDER BAY; DULUTH COMPLEX; EUROPE; FAEROE ISLANDS; GEOLOGY; GREENLAND; ICELAND; KANGERDLUGSSUAQ INTRUSION; LARVIK RING COMPLEX; LAYERED INTRUSION; MELLEN COMPLEX; MINNESOTA; NORTH ATLANTIC; NORWAY; ONTARIO; OSLO RIFT; PALEOZOIC; PERMIAN; PHANEROZOIC; PLATE TECTONICS; PORT COLDWELL; SILLS; SKAERGAARD INTRUSION; TERTIARY; TRIPLE JUNCTIONS; UNITED-STATES; WISCONSIN;

Weiblen, P. W., and Morey, G. B., 1972, Diabase intrusions of northeastern Minnesota: Part 2 [abs.]: Geological Society of America Abstracts with Programs, v. 4, no. 7, p. 701-702. DIABASE; DULUTH COMPLEX; LAYERED INTRUSION; LOGAN SILLS; MINNESOTA; SILLS; UNITED- STATES;

---, 1975, The Duluth Complex; a petrologic and tectonic summary, in Proceedings of the 36th Annual Mining Symposium, and 48th Annual Meeting of the American Institute of Mining and Metallurgical Engineers, Minnesota Section, Duluth: Minneapolis, University of Minnesota, p. 72-95. COPPER; DULUTH COMPLEX; LAYERED INTRUSION; MINNESOTA; NICKEL; PETROLOGY; TECTONICS; UNITED-STATES;

---, 1976, Textural and compositional characteristics of sulfide ores from the basal contact zone of the South Kawishiwi intrusion, Duluth Complex, northeastern Minnesota, in Klatt, L. M., ed., Proceedings of the 49th Annual Meeting of AIME:, p. 22-1-22-24. COOK COUNTY; COPPER; DULUTH COMPLEX; LAKE COUNTY; LAYERED INTRUSION; MATURI; MINERAL CHEMISTRY; MINERAL DEPOSIT; MINERALIZATION; MINNESOTA; NICKEL; SOUTH KAWISHIWI; SOUTH KAWISHIWI INTRUSION; SPRUCE ROAD; SULFIDE; SULFIDES; UNITED-STATES;

---, 1980, A summary of the stratigraphy, petrology and structure of the Duluth Complex: American Journal of Science, v. 280, p. 88-133. DULUTH COMPLEX; FAULT; LAYERED INTRUSION; MINNESOTA; PARTRIDGE RIVER; PARTRIDGE RIVER INTRUSION; PETROLOGY; PLATE TECTONICS; RIFTING; SOUTH KAWISHIWI; SOUTH KAWISHIWI INTRUSION; STRATIGRAPHY; STRUCTURAL-GEOLOGY; TECTONICS; UNITED-STATES;

Weiblen, P. W., Morey, G. B., Cooper, R. W., and Churchill, R. K., 1978, Ore genesis in the Midcontinent rift: Part I, Magmatic sulfides [abs.]: International Association on the Genesis of Ore Deposits Quadrennial Symposium, 5th, Snowbird, Alta, Utah, Programs and Abstracts, p. 38 DULUTH COMPLEX; LAYERED INTRUSION; MAGMATIC; MINNESOTA; ORE GENESIS; SULFIDES; UNITED-STATES;

Weiblen, P. W., Morey, G. B., and Mudrey, M. G., Jr., 1971, Guide to the Precambrian rocks of northwestern Cook County as exposed along the Gunflint Trail. 17th Annual Institute on Lake Superior Geology, Duluth, Minnesota, v. 17, Field trip guide book, p. 97-123 ANIMIKIE; CONTACT METAMORPHISM; COOK COUNTY; DULUTH COMPLEX; GUNFLINT; GUNFLINT IRON-FORMATION; LAYERED INTRUSION; LOGAN SILLS; LOWER-PROTEROZOIC; MINNESOTA; ROVE FORMATION; SILLS; UNITED-STATES;

Weiblen, P. W., Morey, G. B., and Southwick, D. L., 1975, An integrated petrogenetic-tectonics view of the Duluth Complex [abs.]: Eos (American Geophysical Union Transactions), v. 56, p. 469. DULUTH COMPLEX; LAYERED INTRUSION; MINNESOTA; PETROGENESIS; TECTONICS; UNITED-STATES;

---, 1975, A geological model for the evolution of the Midcontinent gravity high. Part II, Petrology [abs.]: Eos (American Geophysical Union Transactions), v. 56, p. 603. EVOLUTION; GEOPHYSICS; GRAVITY; MODEL; MODELLING; PETROLOGY; PROTEROZOIC;

Weiblen, P. W., Morey, G. B., Southwick, D. L., and Walton, M. S., 1976, The effect of ancestral structures on the evolution of the Midcontinent rift and the Duluth Complex [abs.]: 25th International Geological Congress, Sydney, Australia, Abstracts, v. 3, p. 695 DULUTH COMPLEX; EVOLUTION; FAULTS; LAYERED INTRUSION; MINNESOTA; NORTH SHORE VOLCANIC GROUP; SEDIMENTARY-ROCKS; STRUCTURAL-GEOLOGY; UNCONFORMITY; UNITED-STATES; VOLCANIC ROCKS;

177 Weiblen, P. W., Sabelin, T. A., Saini-Eidukat, B., and Iwasaki, I., 1990, The role of volatiles in the formation of the platinum group element deposits in the Middle Proterozoic Duluth Complex and the Triassic Noril'sk-Talnakh intrusions [abs.]: 36th Annual Institute on Lake Superior Geology, Thunder Bay, ONT, v. 36, p. 119-121. ASIA; DULUTH COMPLEX; LAYERED INTRUSION; MESOZOIC; MINERALIZATION; MINNESOTA; NORIL'SK; ORE DEPOSIT; ORIGIN; PGE; PHANEROZOIC; PLATINUM-GROUP ELEMENTS; RUSSIA; SIBERIA; SULFIDES; TALNAKH; TRIASSIC; UNITED-STATES; VOLATILES;

Weiblen, P. W., Saini-Eidukat, B., and Miller, J. D., Jr., 1989, Duluth Complex and associated rocks in the Midcontinent rift system: Washington, D.C., 28th International Geological Congress, Field Trip Guidebook T345, 43 p. COOK COUNTY; DULUTH COMPLEX; GEOLOGY; GUIDEBOOK; LAKE COUNTY; LAYERED INTRUSION; MINNESOTA; NORTH SHORE VOLCANIC GROUP; UNITED-STATES; VOLCANIC ROCKS;

Weiblen, P. W., Saini-Eidukat, B., Mullenmeister, E., and Iwasaki, I., 1987, Stratigraphic, structural, and chemical controls on the Pt group element mineralization in the Duluth Complex [abs.]: Geological Society of America Abstracts with Programs, v. 19, no. 4, p. 251. BIRCH LAKE; DULUTH COMPLEX; GEOCHEMISTRY; LAYERED INTRUSION; MINERALIZATION; MINNESOTA; PGE; PLATINUM-GROUP ELEMENTS; SOUTH KAWISHIWI INTRUSION; ST. LOUIS COUNTY; STRATIGRAPHY; STRUCTURAL-GEOLOGY; UNITED-STATES;

Weiblen, P. W., and Stevenson, R. J., 1978, Characterization of hydrous minerals in the Duluth Complex - Copper-Nickel Study Area: Final Report, Contract SPA 7103, Minnesota Environmental Quality Board. ALLANITE; BABBITT; CHLORITE; COPPER; DULUTH COMPLEX; DUNKA PIT; DUNKA ROAD; EPIDOTE; IDINGSITE; INCO; LAKE COUNTY; LAYERED INTRUSION; MINERAL CHEMISTRY; MINERAL DEPOSIT; MINERAL DEPOSITS; MINERALIZATION; MINERALOGY; MINNAMAX; MINNAMAX SHAFT; MINNESOTA; NICKEL; ORE DEPOSIT; PARTRIDGE RIVER INTRUSION; PARTRIDGE RIVER TROCTOLITE SERIES; PETROGRAPHY; REGIONAL COPPER-NICKEL STUDY; SERPENTINE; SOUTH KAWISHIWI INTRUSION; SPRUCE ROAD; ST. LOUIS COUNTY; STRUCTURAL-GEOLOGY; SULFIDES; TALC; UNITED-STATES;

Welch, E. J., 1977, Origin of the caliche-bearing mudstone in the base Calumet and Hecla Conglomerate, Centennial Mine, Houghton County, Michigan [M.S. Thesis]: Michigan Technological University, Houghton, 53 p. CALICHE; CALUMET AND HECLA CONGLOMERATE; CENTENNIAL-MINE; HOUGHTON-COUNTY; KEWEENAW PENINSULA; MICHIGAN; MINE; MUDSTONE; ORIGIN; SEDIMENTARY- ROCKS; UNITED-STATES; UPPER-PENINSULA;

Welch, G. E., 1941, Geophysical study of the Douglas fault, Pine County, Minneosta: Journal of Geology, v. 49, p. 408-413. DOUGLAS-FAULT; DRILL HOLE; FAULT; GEOPHYSICS; GRAVITY; GRAVITY-SURVEYS; MINNESOTA; PINE-COUNTY; STRUCTURAL-GEOLOGY; UNITED-STATES;

Welkie, C. J., Nebrija, E. L., and Meyer, R. P., 1977, Surficial sediment analyses offshore of the copper-bearing province of Keweenaw Point, upper Michigan [abs.]: 23rd Annual Institute on Lake Superior Geology, Thunder Bay, ONT, v. 23, p. 45. BETE GRISE BAY; CENOZOIC; COPPER; EXPLORATION; FIVE-MILE POINT; GEOCHEMISTRY; GEOPHYSICS; HOLOCENE; KEWEENAW POINT; LOWER-PROTEROZOIC; MICHIGAN; PHANEROZOIC; RECENT; RESISTIVITY; RESISTIVITY SURVEY; SEDIMENTS; SEISMIC; SEISMIC-SURVEYS; TRACE ELEMENT ANALYSES; UNITED-STATES; UPPER-PENINSULA;

Wells, R. C., 1925, Chemistry of deposition of native copper from ascending solutions:, U. S. Geological Survey, Bulletin 778, 71 p. COPPER; GENESIS; GEOCHEMISTRY; MICHIGAN; MICHIGAN COPPER DISTRICT; MIXING; NATIVE COPPER; ORE-DEPOSITS; ORIGIN; UNITED-STATES; UPPER-PENINSULA;

Wendling, S. A., and Sexton, J. L., 1989, Velocity filtering of wide-angle reflection/refraction data from the GLIMPCE Lake Superior line A seismic experiment [abs.]: Eos (American Geophysical Union Transactions), v. 70, no. 15, p. 273. FILTERING; GEOPHYSICS; LAKE SUPERIOR; PROCESSING; REFLECTION; REFRACTION; SEISMIC; SEISMIC LINE A; SEISMIC-SURVEYS; VELOCITY; WIDE ANGLE;

White, D. E., 1968, Environments of generation of some base-metal ore deposits: Economic Geology, v. 63, p. 301-335. COMPOSITION; COPPER; ECONOMIC GEOLOGY; FLUID INCLUSIONS; GENERAL; GEOCHEMISTRY; HYDROGEOLOGY; ISOTOPES; METALS; MEXICO; MICHIGAN; MINERAL-WATERS; ORE FORMING FLUID; ORE FORMING FLUIDS; ORE-DEPOSITS; PROVIDENCIA; RATIOS; SEDIMENTARY-ROCKS; SEDIMENTS; THERMAL; UNITED-STATES; ZACATECAS;

White, W. S., 1952, Imbrication and initial dip in a Keweenawan conglomerate bed: Journal of Sedimentary Petrology, v. 22, p. 189-199. CONGLOMERATE; MICHIGAN; SEDIMENTARY-ROCKS; SEDIMENTATION; SEDIMENTS; UNITED-STATES; UPPER-PENINSULA;

---, 1953, The copper shales of Germany and Michigan [abs.]: Economic Geology, v. 48, p. 631. COPPER; EUROPE; GERMANY; SHALE; UNITED-STATES;

---, 1956, Geologic map of the Chassel quadrangle, Michigan: U. S. Geological Survey, Mineral Investigations Field Studies, Map MF-43, scale 1:24,000. CHASSEL QUADRANGLE; GEOLOGY; MAP; MICHIGAN; UNITED-STATES; UPPER-PENINSULA;

---, 1956, Regional structural setting of the Michigan Copper District [abs.]: 2nd Annual Institute on Lake Superior Geology, Houghton, MI, v. 2, p. 1. COPPER; EPIGENETIC; FAULT; MICHIGAN; MICHIGAN COPPER DISTRICT; NATIVE COPPER; REGIONAL; STRUCTURAL- GEOLOGY; UNITED-STATES; UPPER-PENINSULA;

---, 1957, Regional structural setting of the Michigan native copper district, in Snelgrove, A. K., ed., Geological Exploration: Houghton, Michigan College of Mining and Technology, p. 3-16. AMYGDALOID; ATLANTIC MINE; BALTIC CONGLOMERATE; BALTIC MINE; BAYFIELD- COUNTY; CALUMET AND HECLA CONGLOMERATE; CALUMET AND HECLA MINE; CHAMPION MINE; COPPER; DOUGLAS- COUNTY; DOUGLAS-FAULT; FAULTS; GEOLOGY; GREENSCHIST-FACIES; HOUGHTON-COUNTY; ISLE ROYALE MINE; KEWEENAW

178 COUNTY; LAKE OWEN FAULT; METAMORPHISM; MICHIGAN; MICHIGAN COPPER DISTRICT; NATIVE COPPER; ORE-DEPOSITS; ORIGIN; OSCEOLA MINE; QUINCY MINE; REGIONAL; STRUCTURAL-GEOLOGY; UNITED-STATES; UPPER-PENINSULA; WISCONSIN;

---, 1960, The Keweenawan lavas of Lake Superior, an example of flood basalts: American Journal of Science, v. 258-A, p. 367-374. ALLOUEZ CONGLOMERATE; BALTIC CONGLOMERATE; BASALT; CALUMET AND HECLA CONGLOMERATE; CALUMET AND HECLA MINE; CONGLOMERATE; FLOOD BASALTS; GREENSTONE FLOW; HANCOCK CONGLOMERATE; INTERFLOW SEDIMENTS; KEWEENAW PENINSULA; KINGSTON CONGLOMERATE; LAKE SUPERIOR; MICHIGAN; MINNESOTA; ORIGIN; PORTAGE LAKE VOLCANICS; SCALES CREEK OPHITE; SEDIMENTARY-ROCKS; SHIELD VOLCANO; ST. LOUIS CONGLOMERATE; THICKNESS; UNITED-STATES; UPPER-PENINSULA; VOLCANIC ROCKS; WOLVERINE SANDSTONE;

---, 1960, Discussions - The White Pine copper deposit: Economic Geology, v. 55, p. 402-410. BORNITE; CADMIUM; CHALCOCITE; CHALCOPYRITE; COPPER; DIAGENESIS; DISSEMINATED ORE; EPIGENETIC; FLUIDS; GREENOCKITE; HEMATITE; HYDROTHERMAL; MAGMATIC; MICHIGAN; MICHIGAN COPPER DISTRICT; NATIVE COPPER; NONESUCH SHALE; ONTONAGON- COUNTY; ORE DEPOSIT; ORIGIN; ORONTO-GROUP; PARTING-SHALE; PYRITE; RHYOLITES; SANDSTONE; SHALE; SOLUTIONS; SULFIDES; SYNGENETIC; UNITED-STATES; UPPER-PENINSULA; VEINS; VOLCANIC ROCKS; WHITE PINE ANTICLINE; WHITE PINE FAULT; WHITE PINE MINE; ZONING;

---, 1965, Tectonics of the Keweenawan basin, western Lake Superior region [abs.]: 11th Annual Institute on Lake Superior Geology, St. Paul, MN, v. 11, p. 34. BAYFIELD-PENINSULA; BOUGUER-ANOMALIES; DULUTH COMPLEX; EVOLUTION; GEOLOGY; GEOPHYSICS; GRAVITY; HISTORY; LAKE SUPERIOR; LAKE SUPERIOR REGION; MINNESOTA; TECTONICS; UNITED-STATES; VOLCANIC ROCKS; WISCONSIN;

---, 1966, Geologic evidence for crustal structure in the western Lake Superior Basin, in Steinhart, J. S., and Smith, T. J., eds., The Earth beneath the continents:, American Geophysical Union, Geophysical Monograph 10, p. 28-41. CRUST; CRUSTAL STRUCTURE; GEOLOGY; LAKE SUPERIOR; STRUCTURAL-GEOLOGY;

---, 1966, Tectonics of the Keweenawan basin, western Lake Superior region:, U. S. Geological Survey, Professional Paper 524-E, 23 p. PROTEROZOIC; TECTONICS; UNITED-STATES;

---, 1968, The native copper deposits of northern Michigan, in Ridge, J. D., ed., Ore deposits of the United States: New York, American Institute of Mining, Metallurgical, and Petroleum Engineers, v. 1, p. 303-325. ARSENIC; CHALCOCITE; COPPER; COPPER-ORES; ECONOMIC GEOLOGY; GENESIS; GEOLOGY; HISTORY; HOUGHTON-COUNTY; KEWEENAW COUNTY; MICHIGAN; MICHIGAN COPPER DISTRICT; MINERALOGY; MINING; NATIVE COPPER; ONTONAGON-COUNTY; ORE GENESIS; ORE-DEPOSITS; ORIGIN; PARAGENESIS; PORTAGE LAKE VOLCANICS; PRODUCTION; STRUCTURAL-GEOLOGY; UNITED-STATES; UPPER-PENINSULA; ZONING;

---, 1971, Geologic setting of the Michigan copper district, in White, W. S., ed., Guidebook for field conference on the Michigan copper district: Houghton, Michigan Technological University Press, Society of Economic Geologists, p. 3-17. BARAGA COUNTY; COPPER; COPPER HARBOR CONGLOMERATE; DISPLACEMENTS; ECONOMIC GEOLOGY; FAULTS; FREDA-SANDSTONE; GEOLOGY; GOGEBIC-COUNTY; GUIDEBOOK; HOUGHTON-COUNTY; JACOBSVILLE-SANDSTONE; MICHIGAN; MICHIGAN COPPER DISTRICT; NONESUCH SHALE; ONTONAGON-COUNTY; ORONTO-GROUP; PORTAGE LAKE VOLCANICS; REVERSE-FAULTS; SANDSTONE; SEDIMENTARY-ROCKS; SEDIMENTS; UNITED-STATES; UPPER-PENINSULA;

---, 1971, Field trip A-2 -- Houghton to Calumet via South Range quarry and Eagle River, in White, W. S., ed., Guidebook for field conference, Michigan copper district, Sept., 30-Oct. 2, 1971: Houghton, Michigan Technological University Press, Society of Economic Geologists, p. 68-75. EAGLE RIVER; GEOLOGY; HOUGHTON-COUNTY; MICHIGAN; SOUTH RANGE QUARRY; UNITED-STATES; UPPER-PENINSULA;

---, 1971, A paleohydrologic model for the mineralization of the White Pine copper deposit, northern Michigan: Economic Geology, v. 66, p. 1-13. COPPER; HYDROLOGY; MICHIGAN; MICHIGAN COPPER DISTRICT; MINERALIZATION; MODEL; ONTONAGON-COUNTY; ORIGIN; UNITED-STATES; UPPER-PENINSULA; WHITE PINE MINE;

---, 1972, Base of the Upper Keweenawan, Michigan and Wisconsin:, U. S. Geological Survey, Professional Paper 754-B, 15 p. MICHIGAN; STRATIGRAPHY; UNITED-STATES; VOLCANIC; WISCONSIN;

---, 1972, Keweenawan flood basalts and continental rifting [abs.]: Geological Society of America Abstracts with Programs, v. 4, no. 7, p. 532-534. FLOOD BASALTS; PLATE TECTONICS; RIFTING;

---, 1978, A theoretical basis for exploration for native copper in northern Michigan:, U. S. Geological Survey, Circular 769, 19 p. COPPER; EXPLORATION; MICHIGAN; MICHIGAN COPPER DISTRICT; NATIVE COPPER; UNITED-STATES; UPPER-PENINSULA;

White, W. S., Brooks, E. R., Hubbard, H. A., Johnson, R. F., and Wilband, J. T., 1971, Keweenawan stratigraphy of westernmost Michigan [abs.]: 17th Annual Institute on Lake Superior Geology, Duluth, MN, v. 17, p.71-72. MICHIGAN; STRATIGRAPHY; UNITED-STATES; UPPER- PENINSULA;

White, W. S., Cornwall, H. R., and Swanson, R. W., 1953, Bedrock geology of the Ahmeek quadrangle, Michigan: U. S. Geological Survey, Geologic Quadrangle, Map GQ-27, scale 1:24,000. AHMEEK QUADRANGLE; GEOLOGY; MAP; MICHIGAN; MICHIGAN COPPER DISTRICT; PORTAGE LAKE VOLCANICS; UNITED-STATES; UPPER-PENINSULA;

179 White, W. S., and Wright, J. C., 1954, The White Pine copper deposit, Ontonagon County, Michigan: Economic Geology, v. 49, p. 675-716. ANTICLINES; BORNITE; CHALCOCITE; CHALCOPYRITE; COLLINS SILVER MINE; COPPER; COVELLITE; FAULTS; FOLDS; FRACTURES; LOWER SANDSTONE; MICHIGAN; MICHIGAN COPPER DISTRICT; MINERAL DEPOSIT; MINERALIZATION; NATIVE COPPER; NATIVE-SILVER; NONESUCH MINE; NONESUCH SHALE; ONTONAGON-COUNTY; ORE-DEPOSITS; ORIGIN; ORONTO- GROUP; PARTING-SHALE; PYRITE; SANDSTONE; SCHACHT SHAFT; SCRANTON SILVER MINE; SEDIMENTARY-ROCKS; SHALE; SILTSTONE; SILVER; STRATIGRAPHY; STRUCTURAL-GEOLOGY; SULFIDE; SUPERIOR SILVER MINE; UNITED-STATES; UPPER SANDSTONE; UPPER SHALE; UPPER-PENINSULA; WHITE PINE FAULT; WHITE PINE MINE;

---, 1956, Bedrock geology of the South Range quadrangle, Michigan: U. S. Geological Survey, Mineral Investigations Field Studies, Map MF-48, scale 1:24,000. GEOLOGY; MAP; MICHIGAN; SOUTH RANGE QUADRANGLE; UNITED-STATES; UPPER-PENINSULA;

---, 1960, Lithofacies of the Copper Harbor conglomerate, northern Michigan, in: U. S. Geological Survey, Professional Paper 400-B, p. B5-B8. BASALT; CALUMET; COPPER HARBOR CONGLOMERATE; CROSS-BEDDING; ECONOMIC GEOLOGY; FLOOD BASALTS; HOUGHTON; HOUGHTON-COUNTY; KEWEENAW COUNTY; KEWEENAW PENINSULA; LITHOFACIES; MICHIGAN; NORTHERN; ORONTO-GROUP; PETROLOGY; PORCUPINE MOUNTAINS; PORTAGE LAKE VOLCANICS; RED FACIES; SANDSTONE; SEDIMENTARY-ROCKS; SEDIMENTS; STRATIGRAPHY; THICKNESS; TUFF; UNITED-STATES; UPPER-PENINSULA;

---, 1966, Sulfide-mineral zoning in the basal Nonesuch Shale, northern Michigan: Economic Geology, v. 61, p. 1171-1190. COPPER; ECONOMIC GEOLOGY; GENESIS; GEOLOGIC; LITHOFACIES; MAPS; MICHIGAN; MINERAL DEPOSITS; MINERAL-ZONING; NONESUCH SHALE; ORE-DEPOSITS; ORONTO-GROUP; RARE-EARTHS; SEDIMENTARY-ROCKS; SEDIMENTS; SHALE; STRATA BOUND COPPER DEPOSIT; STRATABOUND; TRACE ELEMENTS ANALYSES; UNITED-STATES;

Whitlow, J. W., 1971, Map showing approximate top of Jacobsville Sandstone, an erosion surface, in parts of Rockland and Greenland quadrangles, Ontonagon County, Michigan: U. S. Geological Survey, Open-File Map, Map 71-324, scale 1:62,500. CAMBRIAN; EROSION-SURFACES; GEOLOGY; GREENLAND-QUADRANGLE; JACOBSVILLE-SANDSTONE; MAP; MICHIGAN; ONTONAGON-COUNTY; PALEOZOIC; PHANEROZOIC; ROCKLAND-QUADRANGLE; SANDSTONE; SEDIMENTARY-ROCKS; SEDIMENTS; STRATIGRAPHY; UNITED- STATES;

Whittaker, P., 1979, Geology of the east central Port Coldwell Complex from the Pic River to Red Sucker Cove [M.S. Thesis]: McMaster University, Hamilton, Ontario, Canada, 242 p. ALKALIC COMPLEX; ALKALINE; ALKALINE INTRUSION; CANADA; COLDWELL COMPLEX; DISTRICT OF THUNDER BAY; GEOLOGY; ONTARIO; PIC RIVER; PORT COLDWELL; RED SUCKER COVE; SUPERIOR PROVINCE;

Whittaker, P. J., 1986, Chromite deposits in Ontario:, Ontario Geological Survey, Study 55, 97 p. CANADA; CHROMITE; CHROMIUM; CRYSTAL LAKE INTRUSION; DISTRICT OF THUNDER BAY; GEOLOGY; MINERAL DEPOSITS; ONTARIO; PARDEE TOWNSHIP; PROTEROZOIC;

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Wiese, R. G., 1960, Petrology and geochemistry of the copper-bearing Precambrian shale, White Pine, Michigan [Ph.D. Dissertation]: Harvard University, Cambridge, MA COPPER; GEOCHEMISTRY; MICHIGAN; MICHIGAN COPPER DISTRICT; NONESUCH SHALE; ONTONAGON-COUNTY; ORONTO-GROUP; PETROLOGY; SEDIMENTARY-ROCKS; SHALE; UNITED-STATES; UPPER-PENINSULA; WHITE PINE MINE;

Wiese, R. G., Jr., 1973, Mineralogy and geochemistry of the Parting Shale, White Pine, Michigan: Economic Geology, v. 68, p. 317-331. CLASTICS; COPPER; ECONOMIC GEOLOGY; GENESIS; GEOCHEMISTRY; MICHIGAN; MICHIGAN COPPER DISTRICT; MINERALOGY; NONESUCH SHALE; ONTONAGON-COUNTY; ORONTO-GROUP; PARTING-SHALE; SEDIMENTARY-ROCKS; SEDIMENTS; SHALE; TERRIGENOUS; UNITED-STATES; UPPER-PENINSULA; WHITE PINE MINE;

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Wilband, J. T., Rohrbacher, T. J., and Luppens, J. A., 1972, Petrochemical investigations of rocks above and below the ore zone at the White Pine mine, Michigan: Compass, v. 49, no. 3, p. 107-114. COPPER; ECONOMIC GEOLOGY; EPIGENETIC; GENESIS; GEOCHEMISTRY; HYDROCARBONS; MERCURY; MICHIGAN; MICHIGAN COPPER DISTRICT; MINE; MINERAL DEPOSITS; NONESUCH SHALE; ONTONAGON-COUNTY; ORE-DEPOSITS; ORGANIC GEOCHEMISTRY; ORONTO-GROUP; SEDIMENTARY-ROCKS; SEDIMENTS; UNITED-STATES; UPPER-PENINSULA; WHITE PINE MINE;

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Wilkinson, S. J., 1983, Geology and sulphide mineralization of the marginal phases of the Coldwell Complex, northwestern Ontario [M.S. Thesis]: Carleton University, Ottawa, Ontario, Canada, 125 p. ALKALIC COMPLEX; ALKALINE; ALKALINE INTRUSION; CANADA; COLDWELL COMPLEX; DISTRICT OF THUNDER BAY; GEOLOGY; MINERALIZATION; ONTARIO; PORT COLDWELL; SULFIDE; SULFIDES; SUPERIOR PROVINCE;

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Wilson, G., and Craddock, C., 1989, Mafic and clastic dikes as Keweenawan paleostress indicators in the Huron Mountains, Michigan [abs.]: 35th Annual Institute on Lake Superior Geology, Duluth, MN, v. 35, p. 102-104. CLASTIC DIKE; DIKES; HURON-MOUNTAINS; INTRUSIONS; JACOBSVILLE-SANDSTONE; MARQUETTE COUNTY; MICHIGAN; PALEOSTRESS; PETROLOGY; SANDSTONE; SEDIMENTARY- ROCKS; SEDIMENTS; STRUCTURAL-GEOLOGY; TRANS SUPERIOR TECTONIC ZONE; UNITED-STATES; UPPER-PENINSULA;

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Winchell, N. H., and Grant, U. S., 1896, Volcanic ash from the North Shore of Lake Superior: American Geologist, v. 18, p. 211-213. ASH; MINNESOTA; NORTH SHORE VOLCANIC GROUP; PETROGRAPHY; UNITED-STATES; VOLCANIC ASH; VOLCANIC ROCKS;

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Winchell, N. H., and Peckham, S. F., 1874, Second annual report for the year 1873:, Geological and Natural History Survey of Minnesota, 145 p. CLASTICS; MINNESOTA; RED CLASTICS; SEDIMENTARY-ROCKS; SUBSURFACE; UNITED-STATES;

Winchell, N. H., and Winchell, H. V., 1891, Iron Ores of Minnesota:, Geological and Natural History Survey of Minnesota, Bulletin 6, 430 p. ARCHEAN; CRETACEOUS; DULUTH COMPLEX; GEOCHEMISTRY; GREENSTONE BELTS; GUNFLINT; GUNFLINT IRON-FORMATION; HEMATITE; IRON; IRON ORE; IRON-FORMATION; LAYERED INTRUSION; MAGNETITE; MESABI RANGE; MESOZOIC; MICHIGAN; MINNESOTA; PHANEROZOIC; ST. LOUIS COUNTY; UNITED-STATES; VERMILION DISTRICT; WISCONSIN;

Windley, B. F., 1989, Anorogenic magmatism and the Grenville Orogeny: Canadian Journal of Earth Sciences, v. 26, p. 179-189. ANOROGENIC; GRENVILLE OROGENY; MAGMATISM; UNITED-STATES;

Windom, K. E., and Seifert, K. E., 1985, Fe-Ti oxide geothermometry of the Mineral Lake intrusion, NW Wisconsin [abs.]: Geological Society of America Abstracts with Programs, v. 17, p. 331. GEOTHERMOMETRY; MELLEN COMPLEX; MINERAL LAKE INTRUSION; OXIDES; UNITED-STATES; WISCONSIN;

Wingquist, C. F., and Lund, R. A., 1976, Electrothermal fracture of copper shale:, U. S. Bureau of Mines, Report of Investigations 8106, 15 p. COPPER; ELECTROTHERMAL-METHODS; FAILURE; FRAGMENTATION; LABORATORY-STUDIES; MICHIGAN; MICHIGAN COPPER DISTRICT; NONESUCH SHALE; ONTONAGON-COUNTY; ORE-DEPOSITS; ORONTO-GROUP; ROCK-MECHANICS; SEDIMENTARY- ROCKS; SEDIMENTS; SHALE; UNITED-STATES; UPPER-PENINSULA; WHITE PINE MINE;

Witthuhn, K., 1993, A structural analysis of the Midcontinent rift in Michigan based on a fault array analysis utilizing slickenslides [M.S. Thesis]: University of Minnesota, Minneapolis, 129 p. FAULT ARRAY ANALYSIS; FAULTS; ISLE ROYALE; MICHIGAN; SLICKENSIDES; STRUCTURAL-GEOLOGY; UNITED-STATES; UPPER-PENINSULA;

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Witthuhn, K. M., 1992, A structural analysis of the midcontinent rift in Michigan, based on a fault array analysis utilizing slickensides [abs.]: 38th Annual Institute on Lake Superior Geology, Hurley, WI, v. 38, p. 92-94. ANTICLINE; COMPRESSION-TECTONICS; FAULTS; ISLE ROYALE; KEWEENAW COUNTY; KEWEENAW PENINSULA; MICHIGAN; PORTAGE LAKE VOLCANICS; SLICKENSIDE; STRESS; STRUCTURAL- GEOLOGY; UNITED-STATES; UPPER-PENINSULA;

Witthuhn, K. M., and Teyssier, C., 1992, A structural analysis of the Midcontinent Rift in Michigan, based on a fault array analysis utilizing slickenside [abs.]: Geological Society of America Abstracts with Programs, v. 24, no. 7, p. A328. FAULTS; ISLE ROYALE; KEWEENAW COUNTY; KEWEENAW PENINSULA; LAKE SUPERIOR SYNCLINE; MICHIGAN; SLICKENSIDE; STRUCTURAL-GEOLOGY; UNITED-STATES; UPPER-PENINSULA;

Witzke, B. J., 1990, General stratigraphy of the Phanerozoic and Keweenawan sequence, M.G. Eischeid #1 drillhole, Carroll County, Iowa, in Anderson, R. R., ed., The Amoco M.G. Eischeid deep petroleum test Carroll County, Iowa: Iowa City, Iowa Department of Natural Resources, Geological Survey Bureau, Special Report Series 2, p. 39-58. CARROLL COUNTY; DRILL HOLE; IOWA; M.G. EISCHEID NO. 1; PHANEROZOIC; RED CLASTICS; SEDIMENTARY-ROCKS; STRATIGRAPHY; UNITED-STATES;

Woelk, T. S., and Hinze, W. J., 1991, Model of the midcontinent rift system in northeastern Kansas: Geology, v. 19, no. 3, p. 277-280. AEROMAGNETICS; COCORP; CRUST; FAULT; GEOPHYSICS; GRAVITY; KANSAS; KANSAS LINE 1; MAGNETICS; MODEL; NOEL POERSCH 1; REFLECTION; REVERSE-FAULTS; RIFT BASIN; SEDIMENTARY-ROCKS; SEISMIC; SEISMIC-SURVEYS; STRUCTURAL- GEOLOGY; TEXACO POERSCH NO. 1; UNITED-STATES; VOLCANIC ROCKS;

Wold, R. J., 1965, An aeromagnetic survey of western Lake Superior [abs.]: 11th Annual Institute on Lake Superior Geology, St. Paul, MN, v. 11, p. 36. AEROMAGNETIC SURVEY; AEROMAGNETICS; GEOPHYSICS; LAKE SUPERIOR; MINNESOTA; UNITED-STATES; WISCONSIN;

---, 1968, Geophysical study of Lake Superior [abs.]: 14th Annual Institute on Lake Superior Geology, Superior, WI, v. 14, p. 11. AEROMAGNETICS; GEOPHYSICS; GRAVITY; GRAVITY-SURVEYS; ISLE ROYALE FAULT; ISLE ST. IGNACE; LAKE SUPERIOR; LAKE SUPERIOR SYNCLINE; STRUCTURAL-GEOLOGY; SUPERIOR-SHOAL;

Wold, R. J., and Berkson, J. M., 1977, Bouguer gravity anomaly map of Lake Superior: U. S. Geological Survey, Miscellaneous Field Studies, Map MF-884, scale 1:500,000. BOUGUER-ANOMALIES; GEOPHYSICS; GRAVITY; LAKE SUPERIOR; MAP; PROTEROZOIC;

Wold, R. J., and Hinze, W. J., 1982, Geology and tectonics of the Lake Superior Basin:, Geological Society of America, Memoir 156, 280 p. AEROMAGNETICS; BAYFIELD-GROUP; CANADA; DISTRICT OF ALGOMA; DISTRICT OF THUNDER BAY; GEOCHEMISTRY; GEOLOGY; GEOPHYSICS; GRAVITY; JACOBSVILLE-SANDSTONE; KEWEENAWAN-SUPERGROUP; LAKE SUPERIOR; MICHIGAN; MINNESOTA; ONTARIO; ORONTO-GROUP; PORTAGE LAKE VOLCANICS; SANDSTONE; SEISMIC; UNITED-STATES; UPPER- PENINSULA; WISCONSIN;

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Wold, R. J., Hutchinson, D. R., and Johnson, T. C., 1982, Topography and surficial structure of Lake Superior bedrock as based on seismic reflection profiles, in Wold, R. J., and Hinze, W. J., eds., Geology and tectonics of the Lake Superior basin:, Geological Society of America, Memoir 156, p. 257-272. BEDROCK; GEOPHYSICS; LAKE SUPERIOR; REFLECTION; SEISMIC; SEISMIC-SURVEYS; STRUCTURAL-GEOLOGY; TOPOGRAPHY; UNITED-STATES;

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Wolff, R. E., 1969, Upper Keweenawan sedimentary rocks on Isle Royale, Lake Superior [M.S. Thesis]: University of Wisconsin, Madison ISLE ROYALE; MICHIGAN; SEDIMENTARY-ROCKS; UNITED-STATES; UPPER-PENINSULA;

Wolff, R. G., 1969, Upper Keweenawan sedimentary rocks on Isle Royale, Lake Superior [M.S. Thesis]: University of Wisconsin, Madison ISLE ROYALE; KEWEENAW COUNTY; LAKE SUPERIOR; MICHIGAN; SEDIMENTARY-ROCKS; SEDIMENTS; STRATIGRAPHY; UNITED- STATES; UPPER;

183 Wolff, R. G., and Huber, N. K., 1973, The Copper Harbor Conglomerate (middle Keweenawan) on Isle Royale, Michigan, and its regional implications:, U.S. Geological Survey, Professional Paper 754-B, 15 p. CLASTIC-ROCKS; CONGLOMERATE; COPPER HARBOR CONGLOMERATE; CURRENT DIRECTIONS; INTERPRETATION; MICHIGAN; ORONTO-GROUP; PROVENANCE; SEDIMENTARY STRUCTURES; SEDIMENTARY-PETROLOGY; SEDIMENTARY-ROCKS; SEDIMENTATION; SEDIMENTS; STRATIGRAPHY; STREAM- TRANSPORT; THICKNESS; TRANSPORT; UNITED-STATES;

Wollensak, M. S., 1988, Upper Keweenawan rift-fill sequence, Midcontinent rift system, Michigan: East Lansing, MI, Michigan State University, Michigan Basin Geological Society, Fall Field-trip Guidebook, 150 p. GUIDEBOOK; LOWER PENINSULA; MICHIGAN; RIFT BASIN; SEDIMENTARY-ROCKS; SEDIMENTS; UNITED-STATES;

Wooden, J. L., and Mudrey, M. G., Jr., 1980, A chemical and Sr isotopic study of the Pigeon Point sill, Cook County, Minnesota [abs.]: Eos (American Geophysical Union Transactions), v. 61, p. 1193. COOK COUNTY; DULUTH COMPLEX; GEOCHEMISTRY; LAYERED INTRUSION; MINNESOTA; PIGEON POINT SILLS; SILLS; STRONTIUM ISOTOPES; UNITED-STATES;

Woodruff, L. G., Cannon, W. F., and Back, J. M., 1992, Chalcocite mineralization in the Portage Lake volcanics of the Midcontinent Rift, Keweenaw Peninsula, Michigan [abs.]: Geological Society of America Abstracts with Programs, v. 24, no. 7, p. A61. CHALCOCITE; KEWEENAW PENINSULA; MICHIGAN; MINERALIZATION; PORTAGE LAKE VOLCANICS; UNITED-STATES; UPPER-PENINSULA;

---, 1994, Chalcocite mineralization in the Portage Lake Volcanics, Keweenaw Peninsula, Michigan [abs.]: 40th Annual Institute on Lake Superior Geology, Houghton, MI, v. 40, p. 77-78. ALTERATION; BOHEMIA CONGLOMERATE; BORNITE; CHALCOCITE; CHALCOPYRITE; COPPER; COPPER-ORES; KEWEENAW FAULT; KEWEENAW PENINSULA; MICHIGAN; MICHIGAN COPPER DISTRICT; MINERALIZATION; MT. BOHEMIA DEPOSIT; NATIVE COPPER; PORTAGE LAKE VOLCANICS; PYRITE; SULFIDE; SULFUR ISOTOPES; UNITED-STATES; UPPER-PENINSULA;

Woodruff, L. G., Nicholson, S. W., and Paces, J. B., 1991, Effects of hydrothermal circulation on O- and Sr-isotope compositions in Michigan copper district basalts [abs.]: Eos (American Geophysical Union Transactions), v. 72, no. 44, p. 538. BASALTS; COPPER; HYDROTHERMAL; MICHIGAN; OXYGEN ISOTOPES; RADIOGENIC ISOTOPES; STABLE-ISOTOPES; STRONTIUM ISOTOPES; UNITED-STATES; VOLCANIC;

Woods, T. S., 1919, The porphyry intrusions of the Michigan copper district: Engineering and Mining Journal, v. 107, p. 299-302. AHMEEK MINE; ALLOUEZ MINE; ARCADIAN LODE; CALUMET AND HECLA MINE; CHIPPEWA FELSITE; CLIFF FISSURE; CLIFF MINE; COPPER; FRANKLIN JUNIOR MINE; IGNEOUS-ROCKS; INTRUSIONS; ISLE ROYALE LODE; KEARSARGE AMYGDALOID; KEARSARGE LODE; KEWEENAW COUNTY; KING PHILIP MINE; MAYFLOWER MINE; MICHIGAN; MICHIGAN COPPER DISTRICT; MOHAWK MINE; NEW ARCADIAN MINE; NONESUCH SHALE; OLD COLONY TUNNEL; ONTONAGON-COUNTY; ORONTO-GROUP; OSCEOLA AMYGDALOID; OSCEOLA LODE; OSCEOLA MINE; PEWABIC LODE; PHOENIX MINE; PORPHYRY; SENECA MINE; UNITED-STATES; UPPER-PENINSULA; WHITE PINE MINE; WINONA MINE;

Woollard, G. P., 1943, Transcontinental gravitational and magnetic profiles of North America and its relation to geologic structure: Geological Society of America Bulletin, v. 54, p. 747-790. BOUGUER-ANOMALIES; CALIFORNIA; COLORADO; GEOLOGY; GEOPHYSICS; GRAVITY; GRAVITY-ANOMALIES; ILLINOIS; INDIANA; KANSAS; MAGNETICS; MISSOURI; NEVADA; NEW JERSEY; OHIO; PENNSYLVANIA; STRUCTURAL-GEOLOGY; UNITED-STATES; UTAH;

---, 1951, Annual report of the special committee on the geophysical and geological study of continents, 1950-1951: American Geophysical Union Transactions, v. 32, p. 634-647. GEOPHYSICS; GRAVITY; IOWA; KANSAS; LAKE SUPERIOR; MINNESOTA; NEBRASKA; UNITED- STATES; WISCONSIN;

Woollard, G. P., and Joesting, H. R., 1964, Bouguer gravity anomaly map of the United States: U. S. Geological Survey. ARCHEAN; BOUGUER- ANOMALIES; GEOPHYSICS; GRAVITY; GRAVITY-ANOMALIES; LOWER-PROTEROZOIC; MAP; UNITED-STATES; UPPER- PROTEROZOIC;

Wooster, L. C., 1884, Transition from the copper-bearing series to the Potsdam: American Journal of Science, v. 27, p. 463-465. PALEOZOIC; PHANEROZOIC; UNITED-STATES; WISCONSIN;

Woznessensky, B., 1967, Structural analysis of the fracture pattern at White Pine mine, Ontonagon County, Michigan [M.S. Thesis]: Michigan Technological University, Houghton COPPER; FRACTURES; MICHIGAN; MICHIGAN COPPER DISTRICT; MINE; ONTONAGON-COUNTY; STRUCTURAL-GEOLOGY; UNITED-STATES; UPPER-PENINSULA; WHITE PINE MINE;

Wright, F. E., 1909, The intrusive rocks of Mt. Bohemia, Michigan, in: Michigan Geological and Biological Survey, Report for 1908, p. 355-402. IGNEOUS-ROCKS; MICHIGAN; MOUNT BOHEMIA; UNITED-STATES; UPPER-PENINSULA;

Wright, H. E., Jr., Mattson, L. A., and Thomas, J. A., 1970, Geology of the Cloquet Quadrangle, Carlton County, Minnesota: Minnesota Geological Survey, Geologic Map Series, Map GM-3, scale 1:24,000. ANIMIKIE; ANIMIKIE BASIN; ANIMIKIE GROUP; CENOZOIC; CLOQUET QUADRANGLE; DIKES; GEOLOGY; GLACIAL GEOLOGY; LOWER-PROTEROZOIC; MAP; MINNESOTA; PHANEROZOIC; PLEISTOCENE; QUATERNARY; THOMSON FORMATION; UNITED-STATES;

Wright, J. C., and Cornwall, H. R., 1954, Bedrock geology of the Bruneau Creek quadrangle, Michigan: U. S. Geological Survey, Geologic Quadrangle, Map GQ-35, scale 1:24,000. BRUNEAU CREEK QUADRANGLE; GEOLOGY; MAP; MICHIGAN; MICHIGAN COPPER DISTRICT; UNITED-STATES; UPPER-PENINSULA;

184 Wright, T. L., 1956, The occurrence and genesis of graphite in the Mellen gabbro, Ashland County, Wisconsin [M.S. Thesis]: University of Illinois, Champaign-Urbana ASHLAND COUNTY; GENESIS; GRAPHITE; MELLEN COMPLEX; UNITED-STATES; WISCONSIN;

Wunderman, R., and Young, C. T., 1987, Evidence for widespread basement decollement structures and related crustal asymmetry associated with the western limb of the Midcontinent Rift [abs.]: 33rd Annual Institute on Lake Superior Geology, Wawa, ONT, v. 33, p. 85-86. ANIMIKIE BASIN; ARCHEAN; DECOLLEMENT; FAULTS; FOLDS; GEOPHYSICS; HORSTS; IOWA; LOWER-PROTEROZOIC; MAGNETOTELLURIC; MAGNETOTELLURIC-SURVEYS; MCGRATH GNEISS; MINNESOTA; STRUCTURAL-GEOLOGY; THOMSON FORMATION; UNITED- STATES;

Wunderman, R. L., 1988, Crustal structure across the exposed axis of the Midcontinent Rift and adjacent flanks, based on magnetotelluric data, central Minnesota-Wisconsin: A case of crustal inhomogeneity and possible reactivation tectonics [Ph.D. Dissertation]: Michigan Technological University, Houghton, 209 p. CRUST; GEOPHYSICS; MAGNETOTELLURIC; MINNESOTA; RIFT BASIN; TECTONICS; UNITED-STATES; WISCONSIN;

Wunderman, R. L., and Rausch, M., 1983, Jacobsville Sandstone ridge in Keweenaw Bay [abs.]: 29th Annual Institute on Lake Superior Geology, Houghton, MI, v. 29, p. 42. GEOMORPHOLOGY; JACOBSVILLE-SANDSTONE; KEWEENAW-BAY; LANDFORM-DESCRIPTION; MICHIGAN; RIDGES; SANDSTONE; SEDIMENTARY-ROCKS; SEDIMENTS; TOPOGRAPHY; UNITED-STATES; VALLEYS;

Yaghubpur, A., 1979, Preliminary geologic appraisal and economic aspects of the Precambrian basement of Iowa [Ph.D. Dissertation]: University of Iowa, Iowa City, 397 p. AEROMAGNETICS; BAYFIELD-GROUP; CHALCOPYRITE; CHROMITE; CLAY-COUNTY; CLAYTON COUNTY; DRILL HOLE; GEOPHYSICS; GRAVITY; IMPACT; IOWA; IOWA PLUTONIC COMPLEX; IRON-FORMATION; LOWER-PROTEROZOIC; MAFIC; MAGNETITE; MANSON STRUCTURE; NICKEL; ORONTO-GROUP; OUIS; OXIDE-BEARING ULTRAMAFIC INTRUSION; OXIDES; PENOKEAN OROGENY; RIFT BASIN; SEDIMENTARY-ROCKS; SIOUX COUNTY; SIOUX-QUARTZITE; SULFIDES; TITANIFEROUS MAGNETITE; ULTRAMAFIC; UNITED-STATES; VANADIUM;

Yardley, D. H., 1955, Geochemical exploration for nickel and copper in northern Minnesota [abs.]: 1st Annual Institute on Lake Superior Geology, Minneapolis, MN, v. 1, p. 21. COPPER; DULUTH COMPLEX; EXPLORATION; GEOCHEMISTRY; LAYERED INTRUSION; MINNESOTA; NICKEL; SOIL; SOIL GEOCHEMISTRY; UNITED-STATES;

---, 1956, Distribution of trace elements in soil fractions [abs.]: 2nd Annual Institute on Lake Superior Geology, Houghton, MI, v. 2, p. 11. COPPER; DULUTH COMPLEX; EXPLORATION; GEOCHEMISTRY; GLACIAL TILL; LAYERED INTRUSION; MINNESOTA; NICKEL; SOIL; SOIL GEOCHEMISTRY; UNITED-STATES;

---, 1961, Geochemical anomalies in forest floor materials: A progress report [abs.]: 7th Annual Institute on Lake Superior Geology, Thunder Bay, ONT, v. 7, p. 18. BIOGEOCHEMISTRY; COPPER; DULUTH COMPLEX; EXPLORATION; MINNESOTA; NICKEL; SAMPLING; ST. LOUIS COUNTY; UNITED-STATES;

Yarger, H., 1981, Aeromagnetic survey of Kansas: Eos (American Geophysical Union Transactions), v. 62, p. 173-177. AEROMAGNETIC SURVEY; AEROMAGNETICS; BASEMENT; GEOPHYSICS; KANSAS; UNITED-STATES;

Yarger, H. L., 1983, Regional interpretation of Kansas aeromagnetic data: Kansas Geological Survey, 35 p. AEROMAGNETIC SURVEY; AEROMAGNETICS; GEOPHYSICS; KANSAS; UNITED-STATES;

---, 1985, Kansas basement study using spectrally filtered aeromagnetic data, in Hinze, W. J., ed., The utility of regional gravity and magnetic anomaly maps: Tulsa, OK, Society of Exploration Geophysicists, p. 213-232. KANSAS; UNITED-STATES;

Yarger, J., Ng, K., Robertson, R., and Woods, R., 1980, Bouguer gravity map of northeastern Kansas: Kansas Geological Survey, scale 1:500,000. BASEMENT; BOUGUER-ANOMALIES; GEOPHYSICS; GRAVITY; KANSAS; MAP; UNITED-STATES;

York, D., and Halls, H. C., 1969, K-Ar dating of dike swarm from the north shore of Lake Superior [abs.]: 15th Annual Institute on Lake Superior Geology, Oshkosh, WI, v. 15, p. 44. AGE DATING; CANADA; DIABASE; DIKE; DIKE-SWARMS; DISTRICT OF THUNDER BAY; GEOCHRONOLOGY; GRAND PORTAGE DIKES; LAKE SUPERIOR; ONTARIO; POTASSIUM-ARGON; PUKASKWA DIKES; SIBLEY PENINSULA;

Young, C. T., and Repasky, T. R., 1986, A magnetotelluric transect of the Jacobsville Sandstone in northern Michigan: Geological Society of America Bulletin, v. 97, no. 6, p. 711-716. CLASTIC-ROCKS; FAULTS; GEOPHYSICAL-SURVEYS; GEOPHYSICS; HOUGHTON-COUNTY; JACOBSVILLE-SANDSTONE; KEWEENAW COUNTY; KEWEENAW FAULT; KEWEENAW PENINSULA; MAGNETOTELLURIC- SURVEYS; MICHIGAN; RESISTIVITY; SANDSTONE; SEDIMENTARY-ROCKS; SEDIMENTS; UNITED-STATES; UPPER-PENINSULA;

Young, C. T., 1991, Deep electromagnetic studies of Precambrian terrains in the Lake Superior region [abs.], in Chandler, V. W., ed., Geophysical solutions to geologic problems of continental interiors; a Minnesota workshop:, Minnesota Geological Survey, Information Circular 35, p. 59. ANIMIKIE BASIN; BELL CREEK GRANITE; CANADIAN SHIELD; DULUTH COMPLEX; ELECTRICAL-CONDUCTIVITY; GEOPHYSICAL- SURVEYS; GEOPHYSICS; JACOBSVILLE-BASIN; LAYERED INTRUSION; MAGNETOTELLURIC-SURVEYS; MICHIGAN; MINNESOTA; SEDIMENTARY-ROCKS; SEDIMENTS; UNITED-STATES; WISCONSIN;

Young, C. T., Adams, D., Loukili, A., and Wunderman, R., 1989, Electrical conductivity models of the Lake Superior region (Midcontinent U.S.A.) [abs.]: Eos (American Geophysical Union Transactions), v. 70, no. 15, p. 274. ANIMIKIE; ANIMIKIE BASIN; BELL CREEK GRANITE; CANADIAN SHIELD; COCORP; DULUTH COMPLEX; ELECTRICAL-CONDUCTIVITY; GEOPHYSICAL-SURVEYS; GEOPHYSICS; GLIMPCE; GRAVITY; JACOBSVILLE-SANDSTONE; LAKE SUPERIOR REGION; LAYERED INTRUSION; LOWER-PROTEROZOIC;

185 MAGNETICS; MAGNETOTELLURIC; MAGNETOTELLURIC-SURVEYS; MICHIGAN; MINNESOTA; REACTIVATION; RESISTIVITY; SANDSTONE; SEDIMENTARY-ROCKS; SEDIMENTS; UNITED-STATES; UPPER-PENINSULA;

Youngman, E. P., 1930, Deposits of titanium-bearing ores:, U. S. Bureau of Mines, Information Circular 6386, 41 p. AFRICA; ALABAMA; ALLUVIAL DEPOSITS; ARGENTINA; ARKANSAS; ASIA; AUSTRALIA; BLACK SANDS; BRAZIL; CALIFORNIA; CANADA; CENOZOIC; CENTRAL AMERICA; COLORADO; COOK COUNTY; DULUTH COMPLEX; EUROPE; FLORIDA; GEORGIA; GUATEMALA; GUIANA; ILMENITE; INDIA; INDONESIA; JAPAN; LAKE COUNTY; LAYERED INTRUSION; MADAGASCAR; MALAYSIA; MARYLAND; MEXICO; MINERAL DEPOSITS; MINERALIZATION; MINNESOTA; MISSOURI; MONTANA; NELSON COUNTY; NEW JERSEY; NEW YORK; NEW ZEALAND; NEWFOUNDLAND; NIGERIA; NORTH CAROLINA; NORWAY; OKLAHOMA; ONTARIO; ORE-DEPOSITS; OUIS; OXIDE- BEARING ULTRAMAFIC INTRUSION; OXIDES; PALEOZOIC; PENNSYLVANIAN; PHANEROZOIC; PORTUGAL; QUEBEC; QUEENSLAND; RHODE ISLAND; RUTILE; SENEGAL; SOUTH AFRICA; SOUTH AMERICA; SOUTH AUSTRALIA; SOUTH CAROLINA; SOUTH DAKOTA; SRI LANKA; ST. FRANCOIS MOUNTAINS; TASMANIA; TEXAS; TITANIFEROUS MAGNETITE; TITANIUM; UNITED- STATES; VICTORIA; VIETNAM; VIRGINIA; WASHINGTON; WISCONSIN; WYOMING; ZIMBABWE;

Zablocki, C. J., 1961, Electrical properties of sulfide-mineralized gabbro, St. Louis County, Minnesota, in: U. S. Geological Survey, Professional Paper 424-C, p. C256-C258. COPPER; GEOPHYSICS; MINERALIZATION; MINNESOTA; NICKEL; ST. LOUIS COUNTY; SULFIDES; UNITED- STATES;

Zanko, L. M., Severson, M. J., and Ripley, E. M., 1994, Geology and mineralization of the Serpentine copper-nickel deposit: Duluth, Natural Resources Research Institute, University of Minnesota, Duluth, Technical Report NRRI/TR-93/52, 90 p. BEDDED PYRRHOTITE UNIT; COPPER; DULUTH COMPLEX; FAULTS; GRANO FAULT; LAYERED INTRUSION; MINERALIZATION; MINNESOTA; NICKEL; NRRI; OXYGEN ISOTOPES; PGE; PLATINUM-GROUP ELEMENTS; SERPENTINE; SOUTH KAWISHIWI INTRUSION; ST. LOUIS COUNTY; STABLE- ISOTOPES; STRATIGRAPHY; STRUCTURAL-GEOLOGY; SULFUR; SULFUR ISOTOPES; UNITED-STATES;

Zapffe, C., 1912, The effects of a basic on a Lake Superior iron-bearing Formation:, p. 145-178. BIWABIK IRON-FORMATION; CONTACT METAMORPHISM; DULUTH COMPLEX; IRON-FORMATION; LAYERED INTRUSION; LOWER-PROTEROZOIC; MAFIC; METAMORPHISM; MINNESOTA; UNITED-STATES;

Zartman, R. E., and Wasserburg, G. J., 1969, The isotopic composition of lead in potassium feldspars from some 1.0-b.y. old North American igneous rocks: Geochimica et Cosmochimica Acta, v. 33, p. 901-942. CANADA; COLORADO; DULUTH COMPLEX; GRANITE; GRANOPHYRE; LABRADOR TROUGH; LAYERED INTRUSION; LEAD ISOTOPES; MELLEN COMPLEX; MINNESOTA; NEVADA; NEW YORK; QUEBEC; RADIOGENIC ISOTOPES; TEXAS; UNITED-STATES; VIRGINIA; WISCONSIN;

Zbikowski, D., 1993, A continental crust fracture initiation pattern and hypothetical mechanism [abs.]: 39th Annual Institute on Lake Superior Geology, Eveleth, MN, v. 39, p. 79-80. ALABAMA; BOUGUER-ANOMALIES; CARIBBEAN PLATE; CONVECTION; CRUST; EXTENSION; FRACTURES; GEOPHYSICS; GRAVITY; INDIANA; KANSAS; KENTUCKY; LOWER PENINSULA; MANTLE; MICHIGAN; MINNESOTA; NEBRASKA; OHIO; PLUME; RIFTING; SEDIMENTARY-ROCKS; SHEAR; STRESS; STRUCTURAL-GEOLOGY; UNITED-STATES; WISCONSIN;

Zbikowski, D. W., 1995, A continental crust fracture initiation pattern and hypothetical mechanism [abs.]: 41st Annual Institute on Lake Superior Geology, Marathon, ONT, v. 41, p. 80. BOUGUER-ANOMALIES; CONVECTION; GEOPHYSICS; GRAVITY; MANTLE; STRUCTURAL- GEOLOGY; TRIPLE JUNCTIONS; UNITED-STATES;

Zeitz, I., and Griscom, A., 1964, Geology and aeromagnetic expression of the mid-continent gravity high [abs.], in: Geological Society of America, Special Paper 76, p. 184. AEROMAGNETICS; GEOLOGY; GEOPHYSICS; GRAVITY; IOWA; MICHIGAN; MINNESOTA; UNITED-STATES;

Zhu, T., and Brown, L. D., 1986, Consortium for continental reflection profiling Michigan surveys: Reprocessing and results: Journal of Geophysical Research, v. 91, no. B11, p. 11,477-11,495. CLASTICS; COCORP; CRUST; FAULTS; GEOPHYSICS; LOWER PENINSULA; MICHIGAN; MICHIGAN-BASIN; REFLECTION; SEDIMENTARY-ROCKS; SEISMIC; SEISMIC-SURVEYS; STRUCTURAL-GEOLOGY; UNITED- STATES; VOLCANIC ROCKS;

Ziegler, A., Reinhard, C., Coles, G. L., and Boyer, L., 1983, Bayfield County: Wisconsin cartographic catalog 1983, University of Wisconsin State Cartographic Office, Madison, Wisconsin. AREAL-GEOLOGY; BAYFIELD-COUNTY; CATALOGS; GENERAL; GEOLOGIC-MAPS; HYDROLOGIC-MAPS; INDEX-MAPS; LAND-USE; MAPS; SEDIMENTARY-ROCKS; SEDIMENTS; SOILS-MAPS; TOPOGRAPHIC-MAPS; UNITED-STATES; WISCONSIN;

Zietz, I., 1965, Aeromagnetic study of the midcontinent gravity anomaly [abs.]: U. S. Progress Report Internal Upper Mantle Project. AEROMAGNETIC SURVEY; AEROMAGNETICS; GEOPHYSICS; GRAVITY; UNITED-STATES;

Zietz, I., Gilbert, F. P., and Keys, J. R., 1976, Aeromagnetic map of Iowa: color coded intensities: U. S. Geological Survey, Geophysical Investigations, Map GP-911. AEROMAGNETICS; GEOPHYSICS; IOWA; MAP; UNITED-STATES;

Zietz, I., Karl, J. H., and Ostrom, M. E., 1977, Aeromagnetic map of Precambrian terrane in Wisconsin: U. S. Geological Survey, Miscellaneous Field Studies, Map MF-888, scale 1:250,000. AEROMAGNETIC SURVEY; AEROMAGNETICS; ARCHEAN; GEOPHYSICS; LOWER- PROTEROZOIC; MAP; UNITED-STATES; WISCONSIN;

Zietz, I., and Kirby, J. R., 1970, Aeromagnetic map of Minnesota: U. S. Geological Survey, Geophysical Investigation, Map GP-725, scale 1:1,000,000. AEROMAGNETICS; GEOPHYSICS; MAGNETIC; MAP; MINNESOTA; UNITED-STATES;

186 Zietz, I., and Sims, P. K., 1963, Buried extension of the Keweenawan basin in Minnesota - A geophysical survey [abs.]: 9th Annual Institute on Lake Superior Geology, Duluth, MN, v. 9, p. 34. AEROMAGNETIC SURVEY; AEROMAGNETICS; GEOPHYSICS; HUDSON-AFTON HORST; MINNESOTA; RIFT BASIN; TWIN CITIES BASIN; UNITED-STATES; VOLCANIC ROCKS;

Zinn, J., 1930, Petrography of the Keweenaw lava flows of Michigan [M.S. Thesis]: Michigan Technological University, Houghton, 26 p. MICHIGAN; PETROGRAPHY; UNITED-STATES; UPPER-PENINSULA; VOLCANIC ROCKS;

Zumberge, J. H., and Gast, P., 1961, Geological investigations in Lake Superior: Geotimes, v. 6, no. 4, p. 10-13. COPPER-HARBOR; DRILLING; GEOCHEMISTRY; GEOLOGY; GEOPHYSICS; ISLE ROYALE; LAKE SUPERIOR; MICHIGAN; SEDIMENTS; SEISMIC; SEISMIC-SURVEYS; UNITED-STATES;

Zwickey, W. R., 1969, Exploration of the Round Lake anomaly, Sawyer County, Wisconsin [abs.]: 15th Annual Institute on Lake Superior Geology, Oshkosh, WI, v. 15, p. 47. EXPLORATION; GEOPHYSICS; GRAVITY; MAGNETICS; MELLEN COMPLEX; ROUND LAKE INTRUSION; SAWYER COUNTY; UNITED-STATES; WISCONSIN;

187 AUTHOR INDEX

(A)

Aaquist, B. E...... 5 Aaseng, N...... 74, 136 Abel, C. D...... 5 Abrajano, T. A., Jr...... 5 Adams, B. B...... 5 Adams, D C...... 5, 90, 189 Adams, F. P...... 5 Ade-Hall, J. M...... 82 Agena, W. F...... 14, 63, 97, 112, 113 Ager, C...... 5, 74 Aho, G...... 5, 112 Ahrens, L. H...... 52 Alapieti, T. T...... 6 Alawi, J. A...... 6, 143 Albee, A. L...... 174 Alcock, R...... 175 Aldrich, H. R...... 6 Aldrich, L. T...... 6, 162 Alexander, E. C., Jr...... 100 Ali, H. M...... 6, 40, 122 Allègre, C. J...... 104 Allen, D. J...... 6, 7, 78 Allen, R. C...... 7 Alminas, H...... 7, 74 Al-Alawi, J. A...... 6 Al-Jassar, T. J...... 6, 143 Ameel, J...... 121 Amstutz, G. C...... 7, 162 Anderson, D. H...... 72, 121 Anderson, G. E...... 7 Anderson, R. A...... 101 Anderson, R. R...... 7, 8, 33, 102, 110, 134, 138, 153, 174, 186 Anderson, S...... 34 Anderson, T. D...... 8 Andrews, M...... 8, 144 Annells, R. N...... 8 Anonymous ...... 9 Antonellini, M. A...... 9 Anzoleaga, R...... 10 Arden, D. D...... 10 Arehart, G. B...... 10 Ariskin, A. A...... 30, 31, 93 Armbrust, G. A...... 10, 59 Artist-Downey, M...... 116 Ashbrook, P...... 10 Ashwal, L. D...... 121 Atkins, J. O...... 10 Atkinson, W. J...... 10 Atwater, G. I...... 10 Aubut, A. J...... 11 Augustithis, S. S...... 142 Austin, G. S...... 11 Autra, K. B...... 11 Ayer, F. A...... 11 Ayres, L. D...... 11

(B)

Baadsgaard, H...... 60 Baars, D. L...... 11 Babcock, L. E...... 11 Babcock, L. L...... 11 Babcock, R. C., Jr...... 12 Back, J. M...... 187

188 Bacon, L. O...... 12, 92 Bada, N...... 31 Bagchi, A...... 126 Bagg, R. M...... 12 Bain, G. W...... 12 Baker, M. R...... 90 Bakheit, A. K...... 12 Balaban, N. H...... 30, 113, 115, 120 Balint, F...... 12 Bally, A. W...... 78, 80 Balsley, J. R...... 12 Baragar, W. R. A...... 12, 64 Barazangi, M...... 13 Barghoorn, E. S...... 13, 111 Barlow, R. B...... 58, 59, 147, 166 Barmina, G. S...... 30, 31 Barnes, R. J...... 57, 74, 94, 157, 165 Barnes, S. J...... 117 Barnes, S.-J...... 13, 74, 169 Bartholome, P...... 24 Barton, P. B., Jr...... 13 Basaltic Volcanism Study Project ...... 13, 64 Bastin, E. S...... 13 Bath, G. D...... 13 Bathe, D...... 14, 149 Bauer, D. P...... 38 Bauer, P. W...... 174 Bauer, R. L...... 160 Bauman, E...... 171 Baxter, D. A...... 14 Bayfield, H. W...... 14 Bayley, W. S...... 14 Beaumont, C...... 14, 25 Beck, J. W...... 14, 98 Beck, M. E., Jr...... 14, 20 Beebe, R. R...... 47 Behnke, D...... 14 Behrendt, J. C...... 14, 15, 28, 63, 82, 83 Bell, J. M...... 15 Bell, K...... 15, 17, 133 Bell, R...... 15 Belperio, A. P...... 15 Belsky, T...... 15, 49, 86 Beltrame, R. J...... 15 Bender, E. E...... 174 Benedict, F. C...... 160 Bengtson, M. E...... 16 Bennett, P. C...... 40 Berendsen, P...... 16, 174 Berg, J. H...... 16, 93, 158 Berger, R...... 16 Bergstrom, D. J...... 16 Berkey, C. P...... 16 Berkson, J. M...... 16, 92, 186 Berry, M. J...... 17 Beske-Diehl, S...... 99 Bickford, M. E...... 17, 160, 174 Biczok, J...... 17 Biggs, D. L...... 64, 86, 114, 141 Bigsby, J. J...... 17 Billings, M. D...... 17 Birch, F...... 17 Birkett, T. C...... 161 Bitsianes, G...... 150 Black, R. A...... 8 Black, W. A...... 17 Blackadar, R. G...... 17 Blair, K. P...... 16 Blakely, R. J...... 17 Blecha, M...... 17

189 Bleifuss, R. L...... 175 Blenkinsop, J...... 15, 17 Blue, A...... 18 Boctor, N. Z...... 108 Boman, P. L...... 33 Bona, L. J...... 18 Bonnichsen, B...... 18-20, 136, 172 Books, K. G...... 20, 65 Booy, E...... 16 Borcherding, R. M...... 16 Born, P...... 20 Bornhorst, T. J...... 14, 20, 21, 28, 46, 65, 109, 133 Botto, R. I...... 19 Bottriel, K. J...... 21 Bottriell, K. J...... 21 Boucher, M. L...... 21 Boudreau, A. E...... 21 Bowers, C. E...... 151 Bowers, M. C...... 21, 22 Bowie, W...... 22 Bowles, J. F. W...... 177 Bowman, P. L...... 33 Bowring, S. A...... 174 Boyer, L...... 189 Boyle, R. W...... 81, 154 Boynton, G. R...... 155 Bradley, J. W...... 22, 78 Bradley, R. E...... 48 Brady, J. M...... 22 Braile, L...... 73, 78, 90 Brannon, J. C...... 22 Braun, J...... 14 Brecke, E. A...... 22 Brewster, D...... 22 Brice, W. C...... 22 Broderick, T. M...... 22, 23 Brojanigo, A...... 24 Broman, W. H...... 24 Brookins, D. G...... 34, 35 Brooks, E. R...... 24, 182 Brooks, K. N...... 24 Brooks, T. B...... 24 Brothers, J. A...... 24 Brown, A. C...... 24, 25, 81, 107, 154 Brown, A. R...... 22, 78 Brown, B. A...... 123, 170 Brown, J. L...... 25 Brown, K. C...... 14, 25 Brown, L...... 25, 58, 155, 156, 189 Brown, R. W...... 154 Browning, T. D...... 25 Brumleve, C...... 25 Brummer, J. J...... 25 Brunfelt, A. O...... 155 Buchheit, R. L...... 25, 26 Buckstaff, S...... 26 Bullwinkel, J. H...... 52 Bumgarner, E. L...... 26 Bur, T...... 139 Burbank, W. S...... 27 Burch, E. P...... 164 Burke, K...... 26 Burke, M. M...... 26 Burlingame, A. L...... 15, 49, 86 Burnell, J. R., Jr...... 26, 43 Burnie, S. W...... 26 Burruss, R. C...... 26, 133 Burwash, E. M...... 26 Butler, B. K...... 26, 144 Butler, B. S...... 27

190 Buzzell, D...... 147 Bydalek, T. J...... 49

(C)

Cabri, L. J...... 116 Calumet Geological Staff ...... 178 Calvin, M...... 15, 49, 86 Cambray, F. W...... 9, 27, 114 Cameron, C. C...... 27 Cameron, E. M...... 130 Cameron, E. N...... 145, 165 Campbell, F. H. A...... 160, 176 Campbell, I. H...... 27 Campbell, R. E...... 27 Cannon, W...... 7, 14, 15, 27-29, 63, 78, 79, 82, 83, 92, 109, 113, 121, 123, 127, 160, 187 Card, K. D...... 29, 103, 148, 160 Carlson, C. G...... 29 Carlson, D. R...... 29, 109 Carlson, M. P...... 29 Carlson, R. W...... 30, 158 Carnahan, T. G...... 162 Carpenter, R. H...... 30 Carriker, N...... 30 Carrillo, F. V...... 92 Carter, W. E. H...... 30 Cartwright, D. F...... 7 Cascaddan, A. E...... 30 Case, J. E...... 30 Catacosinos, P. A...... 30 Catanzaro, E. J...... 72 Cathles, L. M., III ...... 88 Cavaleri, M...... 30 Cawthorn, R. G...... 30 Chalokwu, C. I...... 30, 31, 61, 93, 144 Chamberlain, T. C...... 31 Chamberlin, T. C...... 31, 84 Chan, L. S...... 90 Chan, S. S. M...... 31 Chan, W. K...... 31 Chan, W.-K...... 171 Chandler, V...... 6, 15, 31, 33, 34, 53, 65, 66, 78, 80, 94, 110, 113, 114, 160, 163, 168, 189 Chang, L. L. Y...... 20, 118, 172 Chapman, F. S...... 34 Chapman, S. S...... 34 Chase, C. G...... 34, 164 Chaudhuri, S...... 34, 35, 52 Cheadle, S. P...... 116 Check, G...... 40 Chou, I. M...... 35 Chou, I.-M...... 155 Christianson, M...... 150 Chryssoulis, S. L...... 144 Church, W. R...... 29 Churchill, R...... 35, 38, 179, 180 Clark, J. G...... 35 Clark, K. F...... 35 Clark, R. C...... 35 Clay, C. S...... 16 Clayton, R. N...... 35 Clement, G. M...... 10 Clements, J. M...... 35 Clews, D...... 35 Cloos, M. P...... 35 Closs, L. G...... 35 Coakley, B. J...... 35, 142 Coates, M. E...... 36 Cogulu, E...... 36, 48, 49 Cohen, T. J...... 36

191 Coker, W. B...... 36 Cole, G. P...... 104 Cole, T. J. S...... 15 Coleman, A. P...... 36 Coleman, L. C...... 64 Coleman, R. T., Jr...... 37 Collins, J. A...... 37 Colvine, A. C...... 58, 59, 147, 166, 184 Condie, K. C...... 65, 174 Connan, J...... 37 Cooke, S. R. B...... 66 Coombs, S. L...... 37 Coons, R. L...... 37 Cooper, R. W...... 37, 38, 54, 120, 179, 180 Corbett, J. D...... 38 Cordua, W. S...... 38, 123 Corey, G. W...... 38 Corfu, F...... 94 Cornwall, H. R...... 38, 39, 182, 188 Corrigan, D...... 40 Coyner, A. R...... 39 Craddock, C...... 6, 39, 40, 118, 122, 184 Craddock, J. P...... 40, 98, 109 Cribb, S. J...... 177 Crisman, D. P...... 40 Crocket, J. H...... 26, 61 Crowley, A. J...... 40 Culshaw, N. G...... 40 Curran, D. L...... 165 Currie, K. L...... 40 Czamanske, G. K...... 40

(D)

Dahl, R...... 40, 41, 130, 177 Dahlberg, E. H...... 6, 7, 41, 74, 155 Daines, M. J...... 29 Dalles, M. P...... 129 Daly, R. A...... 41 Danes, Z. F...... 161 Daniels, P. A...... 41, 50, 131 Davidson, A...... 27, 29, 42, 54, 63 Davidson, D. M...... 28, 42, 43, 78, 79, 98, 153, 179 Davidson, E. L...... 43 Davidson, E. S...... 43, 165 Davis, D. W...... 28, 44, 94, 133, 134 Davis, G. L...... 6 Daws, T. A...... 134 De Giacomo, D. L...... 115 De Lory, F. A...... 91 DeGraff, J. M...... 44 DeGroot, R...... 126 Delabio, R. N...... 177 Delano, J. W...... 19 Dell, C. I...... 44 Denechaud, E. B...... 44, 135 Denison, R. E...... 174 Dennen, ...... 44 Denning, R. M...... 44 DePaolo, D. J...... 44 Deutsch, M...... 173 Dewey, J. F...... 26 Dewey, J. L...... 26 Dickas, A. B...... 7, 8, 11, 20, 27-29, 33, 40, 44, 46, 47, 65, 78, 105, 109, 113, 114, 123, 131, 164, 166, 186 Dickinson, R. G...... 28 Diehl, J. F...... 8, 47, 68 Ding, G.-J...... 184 Doane, V. L...... 47 Dobell, J. P...... 47, 126

192 Dods, D...... 94 Dods, S. D...... 168 Doherty, W...... 100 Dolence, J. D...... 47, 104 Donaldson, J. A...... 47 Donaldson, M...... 171 Donnelly, K...... 40 Dorr, J. A., Jr...... 47 Dosso, L...... 47 Dott, R. H., Jr...... 47 Douglas, R. J. W...... 29 Douthitt, C. B...... 103 Doveton, J...... 16 Downey, M...... 116 Downie, I. F...... 85 Drahozval, J. A...... 47 Dubois, P. M...... 48 Dugan, J. P...... 48 Duke, J. M...... 48, 126 Dummett, H. T...... 176 Dunn, M. L., Jr...... 27 Dunning, G. R...... 94 Dupré, B...... 104 Dutka, R. J...... 137 Dutton, C. E...... 48 Dyer, W. S...... 48 Dyl, S. J., II ...... 184 Dyman, T. S...... 133 Dyrkacz, G. R...... 5

(E)

Eames, H. H...... 48 Earle, J. L...... 38 Eastman, W...... 48 Eckstrand, O. R...... 48, 49 Edgar, D...... 73 Edil, T...... 126 Edmonds, C. M...... 177 Edwards, I...... 49 Eger, P...... 49, 96 Eglinton, G...... 49 Ehrlich, R...... 49, 175 Eidemiller, H. N...... 23 Eisenreich, S...... 30, 49, 80 Eiswerth, B. A...... 5 Eldridge, C. S...... 107 Elftman, A. H...... 49 Elger, G. W...... 125 Ellam, R. M...... 30 Elmore, R. D...... 41, 50, 83, 84, 128 Eng, M...... 105 Engel, M...... 50, 83, 84 Ensign, C. O., Jr...... 51, 128, 170 Ensign, P. S...... 51 Epili, D...... 51, 111, 171 Epstein, S...... 35 Ericson, D. W...... 158 Ernst, W. G...... 51 Ervin, C. P...... 51, 94, 109, 119, 123, 169, 170 Eschman, D. F...... 47, 52 Espenshade, G. H...... 43 Essene, E. J...... 101 Evans, N. J...... 52

(F)

Fackler, W. C...... 52

193 Fadaie, K...... 168 Fahrig, W. F...... 52, 66, 72, 94, 145 Fairbairn, H. W...... 52 Farmer, H...... 156 Farnham, P. R...... 52, 87, 118 Farquhar, R. M...... 184 Faure, G...... 34, 35, 52, 132 Feeney, J...... 53, 89 Feenstra, J...... 53 Fellows, S. N...... 53 Fenton, M. D...... 34 Fenwick, K...... 53, 94, 140 Ferderer, R. J...... 33, 53 Ficklin, W. H...... 109, 115 Fiebor, B...... 53 Field, K. K...... 53 Fisher, J...... 53, 81 Fitz, T. J., III ...... 53 Flacker, W. C...... 54 Flint, R. B...... 15 Flood, T...... 54 Foord, E. E...... 7, 74 Foose, M. P...... 40, 54 Forbes, W. C...... 19 Forsyth, D. A...... 54 Foster, J. W...... 54 Foster, M. E...... 55 Foster, R. L...... 55, 87 Fountain, D. M...... 14, 51, 63 Fowler, J. H...... 55 Fox, A. J...... 55, 78 Francis, D...... 13 Franklin, J. M...... 29, 36, 55, 116 Frantti, G. E...... 55 Frarey, M. I...... 29 Frarey, M. J...... 29, 55 Freidrich, G. H...... 142 French, B. M...... 56 French, R. B...... 56 French, W. A...... 56 Frey, B. A...... 41, 56, 155 Frey, F. A...... 56 Frey, M. G...... 56 Frischknecht, F. C...... 90 Frishman, D...... 129 Fritts, C. C., Jr...... 56 Fritts, C. E...... 56 Fritts, J. J...... 51 Fritz, M...... 56 Frodesen, E. W...... 46 Fukui, L. M...... 20, 56 Fuller, M. L...... 69 Fyfe, W. S...... 134

(G)

Gaard, D...... 134 Gair, J. E...... 30 Galvez, A...... 83 Garbutt, P. L...... 24 Gardner, J. E...... 57 Gast, P...... 72, 73, 190 Gazdik, G. C...... 27 Geerts, S...... 57, 122 Gehman, H. M...... 57 Geissman, J...... 174 Genkin, A. D...... 142 Geometrix ...... 57 Geraci, P...... 163

194 Gerhard, L...... 11, 16 Gerken, D. J...... 173 Geul, J. J. C...... 57 Gibb, R. A...... 58, 168 Gibbons, M. G...... 58 Gibbs, A. K...... 58 Giblin, P. E...... 58, 59 Giguere, J. F...... 59 Gilbert, F. P...... 13, 137, 190 Gilbert, M. C...... 174 Gilbertson, J. P...... 38 Giletti, B. J...... 167 Gilgosch, M. A...... 22 Gilmer, T. H...... 34 Gittins, J...... 59 Gladen, L. W...... 41, 110, 172 Glascock, M...... 150 Gmitro, T. T...... 59 Golder and Associates...... 59 Goldich, S. S...... 59, 60, 151 Goldman, A. L., Jr...... 60 Good, D...... 60, 61 Goodacre, A. K...... 178 Gordon, M. B...... 61 Gordon, W. C...... 61 Gorfinkle, L. G...... 52 Gorham, E...... 61 Graham, J. W...... 61 Grambling, J. A...... 174 Grant, N. K...... 21, 30, 31, 61, 62, 93, 117, 118, 144 Grant, S. K...... 151 Grant, U. S...... 62, 184, 185 Grauch, R. I...... 129 Graven, L. K...... 178 Gray, J. J...... 92 Green, A...... 14, 15, 27, 28, 62, 63, 78, 82, 83, 109, 112, 119, 123, 161, 171 Green, J. C...... 8, 11, 20, 22, 27-29, 33, 40, 44, 46, 53, 63, 65, 66, 74, 78, 80, 93, 105, 109, 113-115, 120, 125, 127, 131, 152, 159, 160, 164, 166, 174, 186 Green, W. V...... 112 Greenberg, J. K...... 66, 123 Greenwood, R. C...... 166 Gregg, W. J...... 150 Gridley, J. M...... 5 Grieve, R. A. F...... 70 Griffin, J. B...... 66 Griffiths, R. W...... 27 Grimes, J. G...... 66 Grimes, J. H...... 177 Griscom, A...... 189 Grogan, R. M...... 66 Grosh, W. A...... 66 Gross, B...... 40 Grosz, A...... 27, 163 Grout, F. F...... 66, 67, 171 Grünenfelder, M. H...... 170 Gruner, J. W...... 67, 68 Gulbranson, B. L...... 15 Gundersen, J. N...... 68 Gupta, V. K...... 68 Gustafson, T...... 68 Gustavson, J. B...... 68

(H)

Haas, L. A...... 68 Hahnenberg, J. J...... 68 Haig, T. D...... 47, 68 Haimson, B. C...... 68 Hajnal, A...... 171

195 Hajnal, Z...... 31, 68, 119 Hak, J...... 68 Hakomanki, S. K...... 174 Hall, C. R...... 69 Hall, C. W...... 69 Hall, H...... 69, 180 Hall, J. M...... 64, 82 Halls, H. C...... 16, 28, 42, 52, 65, 66, 69, 70, 72, 94, 104, 134, 137, 174, 188 Hamblin, W. K...... 71 Hamelin, B...... 104 Hamil, B. M...... 16 Hamilton, D. A...... 71 Hamilton, S. K...... 71 Hammer, S. H...... 51 Handke, M. J...... 72 Handy, A. H...... 72 Hanes, J. A...... 72 Hanmer, S...... 54 Hanninen, C. C...... 72 Hansell, J. M...... 72 Hansen, M. C...... 158 Hanson, G. N...... 72, 73, 160 Harcourt, G. A...... 73 Harder, E. C...... 73 Hardy, M. P...... 150 Hardyman, R. F...... 73 Harringer, R. V...... 73 Harris, J. M...... 73, 153 Harris, R. D...... 73 Harris, T. N...... 73, 135 Harrison, W...... 73 Harrower, K. L...... 17 Harstad, M...... 22 Hart, S. R...... 73, 164 Hart, W. K...... 30 Harvey, P. G...... 92 Hase, H. W., Jr...... 74 Haskin, L...... 22, 56, 74, 135 Haskin, M. A...... 56 Hatch, J. R...... 74 Hathaway, D. J...... 51 Hauck, S...... 5, 57, 74, 94, 122, 156, 157, 165 Haug, P...... 86 Hauser, E. C...... 75 Havach, G. A...... 40 Hawley, J. E...... 75 Hayes, J. M...... 78 Haynes, C. W...... 25 Healy, J. H...... 177 Heaman, L. M...... 75, 94 Hearst, R. B...... 75 Hedge, C. E...... 60 Hedgman, C. A...... 28, 75 Heiner, T...... 134 Heinrich, E. W...... 76 Helsley, C. E...... 76 Hempton, M. R...... 61 Henderson, F. A...... 76 Henry, S. G...... 76, 77, 173 Henson, H., Jr...... 157 Herdman, D. J...... 77 Herman, J. H...... 77 Hershey, H. G...... 37 Herz, N...... 77 Heslop, J. B...... 68, 77 Hewitt, D. F...... 103, 148 Hieshima, G. B...... 77, 78, 107, 139 Hill, J. J...... 27 Hills, J. M...... 90 Hinze, P...... 137

196 Hinze, W...... 7, 22, 28, 32, 33, 38, 41, 43, 54, 58, 64, 70, 73, 78, 79, 89, 90, 92, 99, 102, 105, 108, 109, 111, 120, 131, 132, 161, 168, 174, 179, 186, 188 Hite, D. M...... 79 Ho, E. S...... 79, 80, 112 Hodder, R. W...... 5, 27 Hoering, T. C...... 80 Hoeve, J...... 80 Hoffman, J. C...... 177 Hoffman, J. H...... 60 Hoffman, M. R...... 49 Hoffman, P. F...... 80 Hoffmann, M. R...... 80 Hofmann, A. W...... 167 Hohl, C. D...... 23 Holcomb, F. W...... 80 Holden, E. F...... 80 Holliday, R. W...... 80 Hollister, V. F...... 80, 160 Holm, R. M...... 138 Holst, T. B...... 80, 125 Holt, B. D...... 5 Honnorez, J. J...... 81 Hood, P...... 78, 94 Hood, P. J...... 78 Hoppe, W. J...... 17 Horner, W. J...... 71, 81 Hornstein, O. M...... 81 Horsnail, R. F...... 101 Horton, R. J...... 81 Hotchkiss, W. O...... 81 Hough, J. L...... 81 Houghton, D...... 81 Houston, R. S...... 160 Howard, K. A...... 81 Hoy, L. D...... 81 Hubbard, H. A...... 81, 182 Hubbard, T. P...... 82 Huber, N. K...... 21, 82, 187 Hudleston, P. J...... 55 Hunt, T. S...... 82 Huntoon, J. E...... 139 Hunzicker, A. A...... 82 Hurley, P. M...... 52 Hutchinson, D...... 14, 15, 27, 28, 54, 63, 82, 83, 97, 119, 171, 186 Hyde, C. K...... 96

(I)

Idike, F. I...... 96 Ikola, R. J...... 33, 83 Imbus, S. W...... 50, 83, 84 INCO...... 34, 38, 69, 84, 97, 117, 155, 165, 181 Ingall, E. D...... 84 Ingalls, R. W...... 12 Ingemansen, D. B...... 84 Innes, M. J. S...... 84 Irving, E...... 47, 84 Irving, R. D...... 84 Isachsen, Y. W...... 132, 138 Iwasaki, I...... 49, 84, 85, 126, 147, 174, 175, 181

(J)

Jacobsen, S. I...... 85 Jago, B. C...... 85 Jahanbagloo, I. C...... 85 Jahrein, C. E...... 85 Jahren, C. E...... 85

197 Jambor, J. L...... 161 James, H. L...... 6, 12 Jameson, R...... 100 Jamieson, R. A...... 40 Janse, A. J. A...... 85 Jefferson, A. C...... 154 Jefferson, C. W...... 81 Jefferson, T...... 85, 112, 171 Jennings, E. A...... 86, 92 Jensen, L...... 25 Jensen, M. L...... 86 Jerde, E. A...... 86, 114 Jessberger, E. K...... 86 Jessop, A. M...... 86 Jirsa, M. A...... 33, 86, 111, 120 Joesting, H. R...... 187 Johns, R. B...... 15, 86 Johnson, A...... 73, 86, 139 Johnson, A. M...... 139 Johnson, D. L...... 87 Johnson, M...... 126 Johnson, R. C...... 87 Johnson, R. E...... 87 Johnson, R. F...... 87, 182 Johnson, R. G...... 87 Johnson, R. L...... 87 Johnson, R. W...... 87 Johnson, S. H...... 87, 118 Johnson, T. C...... 186 Jolly, W. T...... 87 Jones, L. D...... 15 Jones, L. M...... 146 Jones, M. J...... 106 Jones, N. W...... 88 Jones, P. C...... 162 Jones, P. L...... 178 Jones, W. J...... 92 Joralemon, I. B...... 88 Jorgenson, D. B...... 154 Jost, M...... 88 Jowett, C. W...... 154 Jowett, E. C...... 81, 88 Joyce, F. E., Jr...... 88 Juilland, J. D...... 88 Julin, D. E...... 88

(K)

Kalliokoski, J...... 21, 22, 46, 73, 88, 89, 123, 131, 160 Kamo, S. L...... 94 Kantor, J. A...... 89 Karl, J...... 85, 89, 112, 119, 171, 190 Karlstrom, K. E...... 174 Katz, B. J...... 84 Katzman, M. M...... 89 Kaufman, S...... 25, 58, 156 Kaukonen, R. J...... 89 Kean, W. F...... 53, 89, 90 Keeler, R. G...... 90 Keller, G. R...... 5, 90 Kellogg, R. L...... 79, 90 Kelly, S. P...... 90 Kelly, W. C...... 79, 90, 101, 108, 128, 146 Kemp, C. E...... 91 Kempe, R...... 177 Kennedy, M. C...... 137 Kent, A. E...... 91 Keppler, H...... 150 Kerr, H. L...... 91

198 Kerr, S. D...... 91, 97 Kettler, R. M...... 112 Kiesel, D. S...... 18 Kilburg, J. A...... 91 Kim, K...... 91 King, E. R...... 91, 92 King, L...... 91 Kingston, D. M...... 162 Kingston, G. A...... 92 Kirby, J. R...... 190 Kirkham, R. V...... 81, 154 Kirstein, M. H...... 92 Kirwin, P. H...... 92 Kissin, S. A...... 55, 92, 109, 110, 158 Kisvarsanyi, E. B...... 174 Kisvarsanyi, G...... 151 Klasner, J. S...... 92, 163 Klatt, L. M...... 180 Klaysmat, A. W...... 110 Klein, G. D...... 108 Klewin, K. W...... 16, 30, 93, 158 Kloos, J. H...... 93 Knapp, R. W...... 163 Kneller, W. A...... 110 Knox, A. W...... 93 Koenig, J. W...... 161 Kohsmann, J. J...... 93 Kolehmainen, V...... 40 Komatar, F. D...... 93 Konda, T...... 93, 125 Koptev-Dvomikov, E. V...... 93 Kopydlowski, P. J...... 94 Kordua, W. S...... 123 Korompai, A. E...... 94 Koskelin, K. M...... 38 Kososki, B. A...... 46 Kracher, A...... 94, 155 Kraft, K...... 54 Krause, D. J...... 94 Kreisman, P...... 91, 94, 132, 138, 147, 164, 165, 174 Krenz, K. A...... 94 Krogh, T. E...... 75, 94 Kröner, A...... 174 Kropschot, S. J...... 28 Krueger, H. W...... 60 Kucha, H...... 117, 150 Kucks, R. P...... 94, 168 Kuenzi, W. D...... 55 Kuhns, M. J...... 94 Kuhns, R. J...... 94 Kullerud, G...... 94 Kustra, C. R...... 55, 94 Kvenvolden, K. A...... 13, 49

(L)

LaBerge, G. L...... 95, 123 Labotka, T. C...... 95 Lachance, G. R...... 177 Laderoute, D. G...... 95, 116 Laflamme, J. H. G...... 116 Lamey, C. A...... 95 Landon, S. M...... 91, 95 Landstrom, A. B...... 152 Lane, A. C...... 61, 95, 96 Lankton, L. D...... 96 Lapakko, K...... 49, 96 LaPointe, P. R...... 96 Larson, C. L...... 96

199 Larson, R. J...... 96 Lawler, T. L...... 41, 155 Laws, G. R...... 96 Lawson, A. C...... 96 Lawver, J. E...... 96, 97 Le Duc, J...... 90 Leahy, E. J...... 59 Lee, C. K...... 97 Lee, I...... 97, 144 Lee, K...... 97 Lee, M...... 14, 15, 28, 63, 82, 83, 97, 112, 113 Leeman, W. P...... 47, 97 Lehman, G. A...... 98 Lehmann, E. K...... 98 Lehnert-Thiel, K...... 98 Lei, K. P. V...... 162 Leigh, O. E...... 146 Leighton, M. W...... 98 Leith, A...... 98 Leith, C. K...... 98, 173 Lemons, J. F., Jr...... 115 Leonardson, R. W...... 98 Leone, R. J...... 51, 98 Leroy, J. L...... 117 Leslie, M...... 98 Lewchuk, M. T...... 98, 99 Lewis, T...... 86 Li, F. S...... 99 Li, H...... 99 Li, X. W...... 85 Liberty, B. A...... 99 Lichty, R. W...... 99 Lidiak, E. G...... 60, 90, 99, 174 Lieberman, G...... 100 Liebermann, R. C...... 7 Lightfoot, P. C...... 75, 100, 125, 141 Lilienthal, R...... 163 Lilley, F. E. M...... 100 Lillie, R...... 25 Lindgren, W...... 100 Lindsay, D. W...... 100 Lindsley, D. H...... 159 Lindsley, N...... 14 Link, P. K...... 160 Linscheid, E. K...... 100 Lipp, R. J...... 85 Lippus, C. S...... 100 Lister, G. F...... 100 Listerud, W. H...... 100 Liu, X...... 166 Liu, Y...... 166 Lively, R. S...... 100, 120 Livnat, A...... 90, 100, 101 Loewer, R...... 98 Logan, W. E., Sir...... 101 Lohmann, K. C...... 128 Long, D. G. F...... 101 Long, L. E...... 121 Longley, W. W...... 67 Longo, A. A...... 101 Loukili, A...... 101, 189 Loveridge, W. D...... 12 Lovstrom, K. A...... 101 Lowden, J. A...... 101 Lucia, F. J...... 60, 101 Ludvigson, G. A...... 101, 102 Ludwig, K. R...... 102, 129 Luetgert, J. H...... 102 Luhr, J. F...... 102 Lukosius-Sanders, J...... 102, 116

200 Lum, H. K...... 102, 177 Lumbers, S. B...... 102, 160 Lund, R. A...... 186 Lund, R. J...... 98 Luppens, J. A...... 183 Lutter, W. J...... 102 Lyell, C...... 102 Lyons, P. L...... 102

(M)

MacDougall, J. H...... 102 MacFadyen, C. C...... 25 MacFadyen, D. A...... 25 Machado, H...... 75 Machado, N...... 75, 94 Mack, J. W...... 102 Mackasey, W. O...... 102 Macko, S. A...... 83 MacRae, N. D...... 103 MacTavish, A. D...... 137 Mahajan, A. K...... 103 Mahan, W. M...... 68, 152, 157 Mainwaring, P. R...... 103, 177 Malcolm, J. B...... 178 Malhotra, R...... 72 Malicsi, A. S...... 85 Malmquist, K. L...... 26, 41 Mancuso, J. D...... 104 Mangham, J. R...... 104, 167 Manhes, G...... 104 Mansker, W. L...... 104 Manson, M...... 44, 70, 104 Manzer, G. K...... 104 Marcellus, B. D...... 104 Mariano, J...... 78, 105 Marsden, R. W...... 105, 171 Marsh, S. P...... 28 Martin, D...... 22, 105 Martin, M. W...... 174 Martineau, M. P...... 106 Marvine, A. R...... 106 Maslowski, A...... 106 Mason, J. K...... 137 Massey, N. W. D...... 106 Mathews, K. E...... 106 Mathez, E. A...... 106, 180 Matlack, W. F...... 106, 107 Mattis, A. F...... 47, 107 Mattson, L. A...... 107, 188 Mauk, F. J...... 77 Mauk, J. L...... 10, 26, 77, 79, 80, 107, 108 Mawer, C. K...... 174 Maynard, J. B...... 108 Maynard, R. J...... 83 McBride, M. B...... 175 McCabe, C. L...... 108 McCallister, R. H...... 108 McCallum, I. S...... 179 McCandless, T. E...... 176 McCarthy, E. D...... 15 McCaslin, J. C...... 108 McChesney, R. D. R...... 108 McConnell, K...... 94 McConnell, R. G...... 108 McCuaig, J. A...... 109 McCuaig, T. C...... 109 McDermott, D. W...... 10 McDermott, M. P...... 109

201 McDowell, S. D...... 109, 139 McGarthy, E. D...... 86 McGill, M...... 109 McGinnis, L. D...... 78, 79, 109, 123, 169, 170 McGlynn, J. C...... 84 McGoran, J...... 40, 41, 109, 177 McGovern, M. G...... 40, 109 McHugh, J. B...... 109, 115 McIlroy, R...... 92 McIlwaine, W. H...... 94, 109 McIntyre, R. M...... 59 McKenna, M. P...... 41, 110, 155 McLaughlin, R. M...... 110 McMahon, B...... 144 McMahon, D. A...... 110 McQuaig, T. C...... 110 McRostie, C. N...... 110 McSwiggen, P. L...... 33, 110 Mead, J...... 53 Meineke, D. G...... 100, 110, 172, 173 Meinschein, W. G...... 13, 111 Meinzer, O. E...... 69 Melnik, N...... 111 Meloche, D...... 149 Menagh, D. P...... 15 Mendelsohn, A...... 111 Mengel, J. T., Jr...... 87, 111 Mereu, R...... 14, 51, 54, 63, 71, 111, 119, 171 Merritt, D. W...... 79 Meshref, W. M...... 111 Meuschke, J. L...... 111 Meyer, H. O. A...... 111 Meyer, P. J...... 85, 112 Meyer, R...... 10, 16, 36, 102, 112, 119, 126, 129, 158, 164, 171, 181 Meyers, C. H...... 99 Meyers, P. A...... 79, 80, 108, 112 Meyers, P. E...... 124 Mezhelovsky, N. V...... 47 Michelson, D. M...... 126 Middleton, G. V...... 168 Middleton, R...... 112 Milavec, G. J...... 50, 84, 112 Milkereit, B...... 14, 27, 28, 54, 63, 78, 79, 83, 109, 112, 113, 171 Miller, G. H...... 113 Miller, J. D., Jr...... 18, 31, 33, 113-115, 125, 133, 144, 180, 181 Miller, R. G...... 115 Miller, W. R...... 109, 115 Mills, S. J...... 115 Mills-Ervin, S...... 115 Milne, V. G...... 103, 115, 148 Milton, N. M...... 5 Miner, G. C...... 115 Minnesota Environmental Quality Board ...... 9, 10, 24, 30, 37, 49, 59, 96, 115, 132, 136, 138, 147, 151, 164, 165, 174, 181 Mishra, C. P...... 115 Mitchell, H...... 115 Mitchell, R. H...... 102, 110, 116, 124, 138 Moerlein, G. A...... 116 Mogessie, A...... 116, 117 Molling, P. A...... 62, 117, 118, 172 Monette, C. J...... 118 Montgomery, W. W...... 118 Moogk-Pickard, S...... 116 Mooney, H. M...... 40, 118 Moore, E. S...... 118 Moore, J. R...... 112, 118, 162 Moore, L. R...... 118 Moore, P. B...... 118 Moorehouse, W. W...... 119 Morey, G. B...... 16, 19, 28, 33, 38, 39, 41, 42, 49, 59, 63, 74, 86, 91, 95, 100, 106, 107, 109, 110, 114, 119-124, 131, 138, 150, 159, 160, 171, 179, 180

202 Morris, E. M...... 104, 176 Morris, W. A...... 75 Morris, W. J...... 121 Morrison, D. A...... 121 Morse, J. W...... 136 Mortensen, J. K...... 40 Morton, J. P...... 121 Morton, P...... 57, 66, 74, 121, 122, 165 Moshoian, A...... 40 Mosley, E. J...... 92 Moss, K...... 134 Mossler, J. H...... 30, 132 Motamedi, S...... 122 Mount, D. I...... 122 Moxham, R. M...... 155 Mudrey, M. G., Jr...... 6, 7, 40, 43, 46, 47, 51, 65, 95, 109, 120-124, 160, 169, 170, 179, 180, 187 Mueller, S...... 14, 51, 63 Muhich, T. G...... 124 Muir, I. D...... 124 Mulja, T...... 124 Mullenmeister, E...... 80, 125, 181 Munyan, A. C...... 128 Murray, J...... 112 Murthy, V. R...... 47 Musial, J...... 125 Myers, P. E...... 65, 123, 125 Myers, W. D., II...... 125

(N)

Nafziger, R. H...... 68, 125 Nakamura, Y...... 125 Nakazawa, H...... 85 Naldrett, A. J...... 48, 75, 103, 125, 126, 141, 142 Nash, J. T...... 129 Nash, W. P...... 147 Natarajan, K. A...... 126 Nathan, H. D...... 106, 120, 126 Nebel, M. L...... 126 Nebrija, E. L...... 112, 126, 181 Need, E...... 126 Neilson, J. M...... 126 Nelson, B...... 17 Nelson, B. K...... 17 Nelson, C. A...... 126 Nelson, J. R...... 126 Nelson, N. P...... 151 Nelson, N. S...... 126 Nelson, S...... 6 Neumann, E...... 70, 128 Nevanlinna, H...... 127 Newell, K. D...... 16 Ng, K...... 188 Nicholson, S. W...... 28, 127, 187 Nicol, D. W...... 127 Niebuhr, J. R...... 26 Nielsen, P. A...... 127 Nier, A. O...... 60 Nishio, K...... 128 Nishioka, G. K...... 90, 128 Nivins, G...... 59 Noble, J. H...... 128 Nordeng, S. C...... 128 Nordstrand, E...... 34 Norman, D. I...... 128 North, J...... 128 Nowack, R. L...... 102 Nuffield, E. W...... 129 Nuhfer, E. B...... 129

203 Nusbaum, R. L...... 17 Nutt, C. J...... 129 Nyquist, J...... 109, 123, 129

(O)

O'Hara, N. W...... 33, 79, 92, 132 O'Leary, D. W...... 38 O'Neil, J. R...... 10, 130 O'Nions, R. K...... 115 Oberhelman, M. W...... 129 Oberli, J. W...... 38 Obradovich, J. D...... 21 Ocola, L...... 10, 112, 129 Oestrike, R. W., Jr...... 129 Ohle, E. L...... 129 Ohmoto, H...... 81, 130 Ohnenstetter, D...... 130, 178 Ohr, M...... 130 Oja, R. V...... 130 Ojakangas, R. W...... 8, 11, 20, 29, 33, 40, 46, 47, 65, 74, 78, 105, 109, 114, 120, 130, 131, 160, 164, 166, 171, 186 Ojs, R. V...... 131 Olcott, P. G...... 131 Oliver, C. F. H...... 131 Oliver, J...... 25, 58, 156 Olmstead, J. F...... 51, 93, 131 Ontario Department of Mines - Geological Survey of Canada...... 9 Ontario Geological Survey ...... 10, 15, 20, 35, 53, 58-61, 68, 75, 103, 125, 132, 137, 141, 147-149, 153, 161, 166, 167, 176-178, 183, 184 Oray, E...... 132 Orr, R. G...... 98 Ostenso, N. A...... 186 Ostertag, R...... 86 Ostrom, M. E...... 124, 132, 190 Owen, L. B...... 132 Owens, E. O...... 132

(P)

Paces, J. B...... 21, 44, 46, 68, 114, 127, 132, 133, 187 Page, G. W...... 133 Pagel, M...... 117 Palacas, J. G...... 133, 134, 152 Palmer, A. R...... 78, 80 Palmer, H. C...... 70, 134 Palmquist, J. C...... 72 Pan, G. C...... 134 Papadakis, J...... 134 Papike, J. J...... 95, 120, 121, 159 Parbery, D...... 134 Pardee, F. G...... 134 Parham, W. E...... 134 Parker, B...... 86, 163 Parker, B. K...... 163 Parker, D. C...... 135 Parker, J...... 135 Parker, P. D...... 178 Parrish, I. S...... 146 Parsons, A. L...... 135 Parsons, G. E...... 135 Passero, R. N...... 165 Paster, T. P...... 135 Pasteris, J. D...... 35, 104, 115, 135, 151, 155, 176 Pastor, J...... 74 Patelke, R. L...... 136, 157 Patenaude, R. S...... 136 Patenaude, R. W...... 136 Patrick, J. L...... 51 Patterson, W. A...... 136

204 Paull, R. A...... 136 Pavlish, L. A...... 184 Pawlewicz, M. J...... 134 Payne, B...... 58 Pearson, A. M...... 40 Peckham, S. F...... 185 Pederson, R...... 109 Pegg, C. C...... 25 Penczak, R. S...... 136, 176 Peng, C...... 166 Peng, S. S...... 10 Pennington, J. W...... 66 Perry, E. C., Jr...... 136 Pesonen, L. J...... 65, 70, 127, 134, 136, 137 Peterman, Z. E...... 28, 29, 137, 155, 160 Petersen, D. L...... 150 Peterson, D...... 41 Petterson, G. C...... 137 Pettijohn, F. J...... 137 Petzet, G. A...... 137 Pfannkuch, H...... 73 Philbin, P. W...... 137, 155 Philip, R. P...... 137 Phillion, G. W...... 137 Phillips, J. D...... 168 Phinney, W. C...... 66, 73, 121, 137, 138, 175 Pinson, W. H...... 52 Platt, G. R...... 116 Platt, R...... 115, 116, 138 Poetz, J. A...... 56 Pojar, M. G...... 174 Pojar, M. J...... 138 Pollack, H. N...... 22, 173 Pollock, J. P...... 139, 178 Pollock, S. J...... 139 Pope, N. M...... 139 Poppe, R...... 94, 132, 147, 164, 165, 174 Potter, P. E...... 158, 187 Potts, P. J...... 177 Power, M. S...... 5 Pratt, L. M...... 77, 78, 139 Prendergast, M. D...... 106 Price, K. L...... 109, 139 Price, R. A...... 29 Prichard, H. H...... 177 Proctor, P. D...... 161 Prosen, B. J...... 139 Puckett, A. N...... 44 Pulka, F. S...... 139 Pulley, S...... 126 Pumbelly, R...... 24 Puskas, F. F...... 140 Puskas, F. P...... 140 Pye, E. G...... 140

(Q)

Quam, S...... 163 Quirt, D...... 80

(R)

Raasch, G. O...... 140 Rakestraw, L...... 140 Ramberg, I. B...... 70, 128 Ramsay, R. H...... 140 Rand, J. R...... 140 Rankin, D. W...... 160

205 Ranta, R. A...... 140 Rao, B. V...... 141, 144 Rausch, M...... 188 Rauula, S...... 177 Raza, S. N...... 134 Reed, J. C., Jr...... 160, 174 Reed, L. E...... 85 Reed, R. C...... 141 Reeve, E. J...... 103, 141 Reich, L...... 141 Reichhoff, J...... 122, 141 Reid, K. J...... 85, 147 Reinhard, C...... 189 Rempel, G. G...... 141 Renner, J. L...... 141 Reno, H. T...... 141 Rensink, D. G...... 120 Repasky, T. R...... 142, 188 Reynolds, D. J...... 35, 142 Reynolds, P. H...... 40 Richard, B. H...... 158, 187 Richards, B. D...... 104 Richards, J. P...... 142 Richgels, H. J...... 142 Richter, W...... 15, 49, 86 Ridge, J. D...... 20, 51, 142, 182 Rimsaite, J. Y. H...... 177 Ripley, E. M...... 8, 26, 97, 117, 141-144, 147, 167, 189 Roasch, G. O...... 145 Roberston, J. A...... 29 Robertshaw, P...... 98 Robertson, J. A...... 29 Robertson, J. M...... 145, 174 Roder, D. L...... 145 Roedder, E...... 145 Rogge, M. K...... 145 Rohn, K. H...... 145 Rohrbacher, T. J...... 98, 145, 183 Rollo, C. C...... 146 Rominger, C. L...... 146 Rooney, W. J...... 81 Roscoe, S. E...... 146 Roscoe, S. M...... 146 Rose, H. J., Jr...... 39 Rose, W. I...... 21, 146 Ross, B. A...... 146 Ross, J...... 10, 85 Routledge, R. E...... 146 Roy, J. L...... 146 Roy, R. F...... 78, 79, 146 Rudashevsky, N. S...... 146 Ruiz, J...... 146 Ruotsala, A. P...... 147 Rush, R. J...... 147 Russell, D. J...... 147 Ruzzi, P. L...... 157 Ryan, P. J...... 85, 147 Ryan, R. M...... 147 Ryan, W. A...... 147, 174 Rye, R. O...... 90, 101, 128 Ryu, J...... 147

(S)

Sabelin, T...... 47, 147, 148, 181 Sado, E. V...... 35 Sage, R. P...... 148, 149 Saini-Eidukat, B...... 41, 117, 146, 148, 150, 181 Saja, D. B...... 150

206 Sales, R. H...... 150 Salisbury, M. H...... 26 Samson, C...... 150, 151 Sandberg, A. E...... 151, 153 Sandell, E. B...... 151 Sanford, B. V...... 29 Saremba, S. P...... 151 Sassani, D...... 135, 151 Sather, N...... 132, 164 Satterly, J...... 151 Savard, C. S...... 151 Sawkins, F. J...... 128, 152 Schaap, B. D...... 34, 114, 152 Schafersman, J. S...... 109 Schillinger, A. W...... 139, 179 Schleiss, W. A...... 152 Schluter, R. B...... 68, 152, 157 Schmaltz, L. J...... 165 Schmidt, P. G...... 152 Schmidt, R. G...... 152 Schmidt, S. T...... 152 Schmoker, J. W...... 134, 152 Schnieders, B. R...... 153 Schoes, H. K...... 86 Schoolcraft, H. R...... 153 Schopf, J. W...... 13, 111 Schultz, M...... 126 Schulz, K. J...... 28, 83, 127, 160 Schulz, R. L...... 97 Schwarcz, H. P...... 26, 99 Schwartz, G. M...... 7, 13, 60, 67, 153, 164, 168 Scoates, R. F. J...... 49 Scofield, N...... 153, 154 Scott, G. W...... 27, 154 Scott, J...... 53, 94, 137 Scott, P. M...... 49 Scott, S. D...... 55 Seaman, A. E...... 96, 154 Seaman, W. A...... 154 Seasor, R. W...... 98, 107, 108, 154 Secor, G. B...... 38, 79 Seeland, D. A...... 154 Seglund, J. A...... 154 Seguin, M. K...... 155 Seifert, K. E...... 93, 94, 155, 185 Seitz, J. C...... 35, 155 Sellery, G. B...... 155 Sellner, J. M...... 155 Selwyn, A. R. C...... 155 Sendlein, L. V. A...... 155 Senftle, F. E...... 155 Serpa, L...... 25, 155, 156 Setzer, T...... 25, 58, 155, 156 Severson, M...... 74, 136, 156, 157, 189 Sexton, J...... 78, 79, 109, 119, 123, 157, 171, 181 Seyfried, W. E...... 41 Shah, I. D...... 157 Shank, S. G...... 157 Shanks, W. C., III ...... 48 Sharma, B...... 157 Sharp, J...... 156 Sharp, R. P...... 67 Shaw, C. S. J...... 157, 176 Shaw, D. M...... 99 Shaw, E. G...... 70, 158 Shay, J. T...... 102, 158, 171 Shearer, C. K...... 174 Sheng-Fogg, C. D...... 115 Sherlock, R. L...... 158 Shih, C. Y...... 121

207 Shih, X. R...... 158 Shirey, S. B...... 93, 127, 158 Shirley, D. H...... 172 Shoja-Taheri, J...... 158 Shore, G. T...... 158, 176 Shrake, D. L...... 47, 158, 183, 187 Sibley, D. F...... 158 Siegel, D. I...... 131, 158 Sikkila, K...... 159 Sillitoe, R. H...... 142 Silver, L. T...... 102, 159, 174 Silverman, S. R...... 159 Simmons, E. C...... 159 Simmons, G...... 177 Sims, P. K...... 19, 29, 39, 42, 59, 63, 107, 119-122, 124, 137, 138, 159, 160, 171, 174, 180, 190 Sinclair, I. G. L...... 85 Sinclair, W. D...... 161 Singewald, J. T...... 161 Sipola, J. W...... 72 Sitler, G. W...... 158, 187 Skinner, B. J...... 13 Slaughter, A. E...... 132, 163 Sleep, N. H...... 161 Slichter, L. B...... 161 Sliney, R. E...... 161 Sloan, R. E...... 161 Sloss, L. L...... 161 Smale, G. R...... 161 Smith, A. R...... 161, 167 Smith, C. C...... 91 Smith, J. G...... 161 Smith, M. C...... 161 Smith, M. M...... 22, 162 Smith, P. A...... 162 Smith, R. W...... 120 Smith, S. L...... 162 Smith, T. J...... 12, 17, 36, 73, 136, 162, 164, 178, 182, 186 Smyk, M. C...... 55, 153, 162 Smyres, G. A...... 162 Smyth, H. L...... 162 Snelgrove, A. K...... 12, 162, 181 Snider, D...... 86, 121, 163 Snider, H. I...... 163 Snyder, J. L...... 163 Somanas, C...... 163 Sood, M...... 73 Southwick, D. L...... 34, 114, 121, 160, 163, 180 Spall, H...... 76, 163 Spencer, C...... 14, 27, 28, 63, 112 Spinner, E...... 118 Spiroff, K...... 163 Spivak, S. T...... 92 Spooner, E. T. C...... 142 Sprowl, D. R...... 174 Stafford, J. F...... 12 Stakes, D. S...... 163 Stark, J. T...... 164 Stark, T...... 164 Staub, W. P...... 155 Stauffer, C. R...... 164 Steeples, D...... 16, 25, 156, 163 Stehli, F. G...... 174 Steiner, D...... 25 Steinhart, J. S...... 12, 17, 36, 73, 136, 162, 164, 178, 182, 186 Steinnes, D. N...... 99 Steinnes, S. N...... 99 Stephanson, C...... 20 Stevens, R. D...... 177 Stevenson, R. J...... 164, 181 Stewart, J. H...... 165

208 Stockwell, L. H...... 101 Stoiber, R. E...... 165 Stonehouse, H. B...... 79 Stoynov, H...... 146 Strakele, A. E., Jr...... 165 Straw, W. T...... 165 Strommer, J...... 165 Strother, P. K...... 165 Stuart, D. J...... 177 Stucker, G. F...... 165 Stuhr, S. W...... 165 Stumpfl, E. F...... 117 Sturm, A...... 10 Sukow, W. W...... 165 Summons, R. E...... 78, 139 Sumons, D. T. A...... 98 Sun, D...... 166 Sunwood, D...... 78 Surkov, V. S...... 47 Suszek, T. J...... 166 Sutcliffe, R...... 28, 44, 100, 161, 166, 167, 176 Swanson, L...... 120 Swanson, R. W...... 182 Sweet, E. T...... 167 Swinford, E. M...... 158 Swingen, R. A...... 90 Symons, D. T. A...... 99, 167, 171

(T)

Tabet, D. E...... 167 Taib, N. I...... 144, 167 Tanner, A. B...... 155 Tanton, T. L...... 167 Taylor, H. P., Jr...... 130, 167 Taylor, I. E...... 168 Taylor, N. C. D...... 168 Taylor, P. T...... 168 Taylor, R. B...... 60, 168 Taylor, R. P...... 162 Tazaki, K...... 134 Teal, S...... 168 Teskey, D...... 27, 94, 168, 169 Teyssier, C...... 186 Thaden, R. E...... 169 The Geological Staff (White Pine Copper Company) ...... 169 Thériault, R...... 169 Thieben, S. E...... 155 Thiel, E. C...... 40, 169 Thiel, G. A...... 40, 67, 164, 169, 171 Thingvold, D...... 169 Thomas, H. E...... 31 Thomas, J. A...... 188 Thomas, J. J...... 17 Thomas, M. D...... 58, 75, 168, 169 Thomas, W. A...... 11 Thompson, M. D...... 169, 170 Thompson, M. E...... 170 Thompson, R. C. L...... 170 Thomson, J. E...... 170 Thornber, C. R...... 15 Thornber, D. R...... 15 Thorpe, R. I...... 170 Thurston, P. C...... 149, 166 Thwaites, F. T...... 170 Tilton, G. R...... 170 Tipper, H. W...... 101 Tisue, M...... 73 Todd, J. E...... 184

209 Tolunay, A...... 170 Trammell, J. W...... 25, 51, 170 Treacher, K...... 149 Trehu, A...... 15, 83, 119, 158, 171 Trent, V. A...... 152, 171 Treves, S. B...... 174 Trow, J. W...... 79 Tryhorn, A. D...... 171 Tschopp, D. G...... 171 Tufford, S. P...... 147 Tull, R...... 171 Tuominen, H. V...... 171 Tupper, W. M...... 68, 77 Turek, A...... 171 Turek, P. E...... 171 Turner, G...... 90 Turner, T. R...... 92 Tuve, M...... 171 Twenter, F. R...... 72 Tweto, O...... 174 Tyler, S. A...... 171 Tyson, N. S...... 111 Tyson, R. M...... 20, 118, 171, 172

(U)

Upham, W...... 172, 184

(V)

Vadis, M. K...... 110, 172, 173 Valley, J. W...... 130 Van Altena, P. J...... 173 Van De Meent, D...... 137 van der Pluijm, B. A...... 108 Van der Voo, R...... 50, 56, 77, 108, 173, 178 Van Eeckhout, E. M...... 173 Van Hise, C. R...... 173 Van Horn, J. E...... 173 Van Lewen, M. C...... 173 Van Lier, K. E...... 173 Van Luik, A...... 73 Van Schmus, W. R...... 17, 92, 121, 160, 173, 174 Vaniman, D. T...... 95 Vargo, J. L...... 137 Veith, D. L...... 132, 147, 164, 165, 174 Veith, K. F...... 174 Venzke, E. A...... 174 Vian, R. W...... 76 Vifian, A. E...... 174 Vincent, S. A...... 175 Vincenz, S. A...... 175 Viswanathan, S...... 175 Vogel, T. A...... 49, 175 Vokes, F. M...... 142 Volin, M. E...... 128 Volz, G...... 118, 175 Vos, M. A...... 175 Votaw, R. B...... 99

(W)

Wadsworth, M. E...... 175 Wadsworth, M. S...... 175 Wager, R. E...... 155, 175 Waggoner, T. D...... 175 Waldman, M. A...... 176

210 Walker, D...... 179 Walker, E. C...... 176 Walker, J. W. R...... 176 Walker, N. E...... 105, 176 Wallace, H...... 109, 176 Wallace, P...... 40 Wallin, E. T...... 90, 174 Walthall, F. G...... 60 Walton, M. S...... 180 Wang, H. F...... 35, 78, 79, 109, 129, 142, 177 Wanless, P. H...... 177 Ward, S. H...... 147 Warren, D. H...... 177 Warren, E. J...... 177 Wasserburg, G. J...... 44, 189 Wasson, P. A...... 66 Wasuwanich, P...... 183 Watkinson, D. H...... 15, 40, 41, 103, 130, 149, 177, 178 Watney, W. L...... 16 Watowich, S. N...... 107, 144, 178 Watts, D...... 108, 173, 178 Webb, W. W., III...... 178 Weber, J. R...... 178 Webers, G. F...... 30, 109 Weege, R. J...... 139, 178, 179 Wei, K. C...... 68 Weiblen, P. W...... 38, 40, 41, 54, 66, 69, 80, 85, 110, 114, 115, 117, 120, 121, 124, 138, 145-148, 160, 164, 179-181 Welch, E. J...... 89, 181 Welch, G. E...... 181 Welkie, C. J...... 126, 181 Wells, R. C...... 181 Wendling, S...... 171, 181 West, G. F...... 17, 29, 70, 151 West, T. D...... 52 Wetherill, G. W...... 174 Wetzel, T...... 98 White, A...... 24 White, C. E...... 95 White, D. E...... 181 White, G. D...... 137 White, O. L...... 58, 59, 147, 166 White, R. S...... 83 White, W. S...... 20, 39, 43, 51, 87, 98, 181-183 Whiteman, R. C...... 21 Whitlow, J. W...... 183 Whitney, J. D...... 54 Whittaker, P...... 178, 183 Whittlesey, C...... 183 Wickstrom, L. H...... 158, 183 Wiegel, R. L...... 96, 97 Wier, K. L...... 12 Wiese, R. G., Jr...... 183 Wilband, J. T...... 65, 121, 182, 183 Wilkinson, S. J...... 184 Williams, H. R...... 184 Williams, M. L...... 174 Willmott, A. B...... 184 Wilson, A. W. G...... 184 Wilson, G...... 184 Wilson, M. L...... 184 Wilson, S. E...... 184 Winchell, A. N...... 184 Winchell, H. N...... 184 Winchell, H. V...... 184, 185 Winchell, N. H...... 62, 184, 185 Windom, K. E...... 155, 185 Wingquist, C. F...... 186 Wirth, K. R...... 98 Witthuhn, K...... 114, 186 Witzke, B. J...... 186

211 Wodicka, N...... 40 Woelk, T...... 78, 186 Wold, R. J...... 28, 33, 41, 43, 64, 70, 79, 89, 92, 102, 111, 120, 131, 174, 179, 186 Wolfe, P. J...... 158, 187 Wolff, R. E...... 187 Wolff, R. G...... 187 Wollensak, M. S...... 45, 187 Wolosin, C. A...... 46 Wolske, R...... 90 Wood, J...... 58, 59, 147, 166 Wooden, J. L...... 121, 174, 187 Woodruff, L. G...... 28, 29, 107, 127, 187 Woods, R...... 188 Woods, T. S...... 187 Woollard, G. P...... 37, 164, 187 Wooster, L. C...... 187 Worona, R...... 20 Woznessensky, B...... 187 Wright, F. E...... 187 Wright, H. E., Jr...... 188 Wright, H., Jr...... 73 Wright, J. C...... 39, 43, 51, 183, 188 Wright, T. L...... 51, 188 Wunderman, R. L...... 188

(X)

(Y)

Yaghubpur, A...... 35, 188 Yardley, D. H...... 160, 188 Yarger, H. L...... 163, 188 Yarger, J...... 188 Yaskawa, K...... 175 York, D...... 59, 188 Young, C. T...... 5, 22, 112, 188, 189 Young, G. M...... 29, 101 Youngman, E. P...... 189 Yund, R. A...... 167

(Z)

Zablocki, C. J...... 90, 189 Zanko, L...... 74, 157, 189 Zapffe, C...... 189 Zartman, R. E...... 28, 114, 160, 189 Zbikowski, D. W...... 189 Zhang, B...... 70 Zhou, Z...... 134 Zhu, T...... 189 Ziegler, A...... 189 Zientek, M. L...... 40 Zietz, I...... 17, 91, 160, 189, 190 Zinn, J...... 190 Zoltai, T...... 85 Zumberge, J. E...... 83 Zumberge, J. H...... 190 Zwickey, W. R...... 190

212 KEYWORD INDEX

(Drillholes)

10030 ...... 6, 26, 143 10031 ...... 6, 26, 143 10039 ...... 6, 26, 143 10040 ...... 6, 26, 143 10052 ...... 6, 26, 143 10053 ...... 6, 26, 143 10060 ...... 6, 143 10061 ...... 6, 143 10063 ...... 6, 143 10065 ...... 6, 26, 43, 143 10066 ...... 6, 26, 143 10069 ...... 6, 143 10093 ...... 43 10111 ...... 6, 143 10112 ...... 6, 143 10119 ...... 6, 143 10120 ...... 6, 26, 143 10121 ...... 6, 26, 143 10123 ...... 6, 143 10134 ...... 6, 26, 143 10135 ...... 6, 26, 143 10136 ...... 6, 26 10138 ...... 6, 26 10139 ...... 6, 26 10172 ...... 6, 26, 143 10195 ...... 6, 143 10211 ...... 6, 143 10216 ...... 6, 143 24981 ...... 6, 26 24987 ...... 143 26056 ...... 141 26081 ...... 141 26069 ...... 84 26082 ...... 26, 141 27015 ...... 174 34870-A ...... 97 34872 ...... 117 34873 ...... 21 A1-1...... 100 A4-14...... 89, 106 B1-17...... 106 B1-24...... 106 B1-29...... 106 B1-39...... 106 B1-54...... 106 B1-56...... 106 B1-61...... 73, 172 B1-66...... 106 B1-73...... 35, 43, 106 B1-81...... 106 B1-82...... 106, 115 B1-85...... 106 B1-91...... 106, 171, 172 B1-94...... 106 B1-97...... 106 B1-100...... 106 B1-103...... 106 B1-105...... 106 B1-115...... 106 B1-117...... 106 B1-122...... 106 B1-124...... 106 B1-128...... 53, 56, 106 B1-132...... 6, 143, 147 B1-134...... 106

213 B1-136...... 6, 26, 106, 167 B1-142...... 6, 106, 143 B1-144...... 106, 117 B1-146...... 6, 26, 167 B1-147...... 106 B1-148...... 106 B1-155...... 106 B1-156...... 6, 26, 167 B1-162...... 43 B1-168...... 106 B1-171...... 106 B1-177...... 106 B1-179...... 106 B1-188...... 106 B1-189...... 6 B1-190...... 106 B1-191...... 106 B1-192...... 106 B1-196...... 106 B1-201...... 106 B1-214...... 6, 26, 167 B1-221...... 6, 30, 31, 61, 66, 167 B1-232...... 43 B1-295...... 62, 117, 118, 172 B1-297...... 171, 172 B1-304...... 171, 172 B1-313...... 106 B1-316...... 35, 43 B1-363...... 115 B1-364...... 171, 172 B1-377...... 6, 143 B1-379...... 6 B1-402...... 43 B1-406...... 43 BA-1...... 117 BA-2...... 117 BA-4...... 53 BA-6...... 100 CN-1...... 103 CN-3...... 103 CN-7...... 103 CN-9...... 103 DDH 17700 ...... 35, 106 DDH 40921 ...... 155 DDH MDD2 ...... 6, 26, 167 DDH WP ...... 139 DO-14 ...... 109, 139 DO-5 ...... 109, 139 DU-15 ...... 41, 74, 117, 147, 148 DU-9 ...... 117 D-5...... 117 DU-6 ...... 54 DU-8 ...... 54 DU-10 ...... 54 DU-12 ...... 54 DU-14 ...... 54 DU-16 ...... 54 DU-17 ...... 54 FHL-1...... 151 FHL-2...... 135, 151 FH-1...... 135 FH-2...... 135 FINN 1-4...... 16 II-1 ...... 117 KA-1 ...... 106 KA-4 ...... 106 K-1...... 53 K-5...... 94 K-6...... 94 K-8...... 106

214 K-9...... 94 K-10...... 94 K-11...... 94 K-12...... 94 K-13...... 94 K-14...... 94 K-15...... 94 K-16...... 94 K-17...... 94 K-18...... 94 K-19...... 94 K-20...... 94 K-21...... 94 K-22...... 94 K-23...... 94 K-24...... 94 K-25...... 94 K-26...... 94 K-27...... 94 K-28...... 94 K-29...... 94 LN-1...... 100 LN-2...... 100 LN-3...... 100 LN-4...... 100 LN-5...... 100 LN-6...... 100 LN-7...... 100 LN-8...... 100 LN-9...... 100 LN-10...... 100 LONSDALE 65-1 ...... 74 M.G. EISCHEID NO. 1...... 7, 8, 102, 110, 134, 138, 153, 174, 186 NM-3...... 106 NM-5...... 20, 56, 57, 117 NOEL POERSCH 1...... 16, 174, 186 SL-1...... 117 SL-11...... 103 SL-2...... 103 SL-3...... 103 SL-8...... 103 S-1 ...... 174 TEXACO POERSCH NO. 1...... 16, 174, 186 WPB-1...... 109, 139 W-11 ...... 139 W-9 ...... 117

(Numbers)

40AR/39AR...... 72, 86, 90 40TH AVENUE EAST ICELANDITE ...... 65 42ND AVENUE EAST RHYOLITE ...... 65 87SR/86SR ...... 15, 155, 183

(A)

A DRIFT ...... 6, 43, 92, 106, 107, 143 ABILENE ANTICLINE ...... 16, 104 ABITIBI DIKES ...... 47, 52, 145, 158 ABITIBI SUBPROVINCE...... 25, 184 ACANTHITE ...... 55, 92 ACCESSORY MINERALS ...... 75, 171 ACCOMMODATION ZONE ...... 46, 157 ACCRETION ...... 174 ACRITARCHS ...... 118 ACTINOLITE...... 61, 108 ADCUMULUS ...... 36 ADELAIDE GEOSYNCLINE ...... 65

215 ADIRONDACK MOUNTAINS ...... 67, 154 ADULARIA ...... 21, 23 ADVENTURE MINE ...... 23 AEOLIAN...... 101, 131, 168 AERIAL GAMMA RAY ...... 57 AERIAL GAMMA RAY SURVEY...... 57 AEROMAGNETIC ANOMALY ...... 6, 7, 13, 26, 32, 34, 54, 58, 79, 91, 105, 111, 121, 163, 166, 168, 174 AEROMAGNETIC SURVEY ...... 6, 9, 10, 12, 13, 15, 17, 25, 30, 32, 33, 57, 79, 85, 89-91, 94, 98, 99, 104, 105, 112, 132, 136, 137, 151, 153, 160, 161, 163, 168, 169, 172, 174, 176, 186, 188-190 AEROMAGNETICS...... 5-7, 9, 10, 12-15, 17, 25-27, 29, 30, 32-34, 38, 48, 51, 53, 54, 57, 58, 68, 70, 71, 75, 79, 80, 85, 89-91, 94, 98, 99, 104, 105, 111, 112, 114, 118, 121, 123, 132, 136, 137, 141, 142, 149, 151-153, 160, 161, 163, 166, 168, 169, 172, 174-176, 186, 188-190 AFRICA...... 13, 21, 25-27, 30, 44, 48, 64, 65, 80, 97, 100, 104, 108, 112, 123, 125, 135, 137, 159, 167, 168, 189 AGAM LAKE FAULT ...... 140 AGATE ...... 12, 44, 145, 165-167 AGATE POINT RHYOLITE ...... 12, 44, 166, 167 AGAWA CANYON FAULT ...... 70 AGE DATING...... 6, 12, 14, 15, 17, 20, 21, 28, 29, 34, 35, 40, 44, 52, 56, 59, 60, 70, 72, 73, 75, 85, 86, 90, 98, 99, 101, 104, 113, 114, 121, 130, 132-134, 137-140, 145-149, 159, 160, 170, 171, 173, 174, 177, 188 AGENDA DEPOSIT ...... 105 AGGREGATE ...... 22, 74 AHMEEK ANTICLINE ...... 23 AHMEEK MINE...... 23, 108, 162, 187 AHMEEK QUADRANGLE ...... 5, 182 AILLIK DIKES...... 52 AIR INJECTION...... 31 AIR POLLUTION...... 61, 138 AIR QUALITY ...... 10 AIRBORNE...... 5, 51, 57, 74, 102, 132, 169 AIRBORNE IMAGING SCANNER SURVEY ...... 5, 74 AIRBORNE RADIOMETRICS...... 57 AIRBORNE SPECTROMETRY ...... 5, 74 AITAITE...... 124 AITKIN COUNTY ...... 31, 69, 120, 121, 151 AKELEY LAKE ...... 62 ALABAMA...... 53, 189 ALAMOSA STOCK...... 167 ALBANY FORKS CARBONATITE COMPLEX ...... 149 ALBERT LEA COUNTY ...... 11 ALBERTA...... 37, 90 ALBERTA BASIN ...... 90 ALBITE...... 61, 154 ALBITIZATION...... 152-154, 162 ALDRIGE CREEK QUADRANGLE ...... 141 ALGAE ...... 50 ALGODONITE ...... 23, 71, 77, 161 ALGOMA ...... 8-11, 14, 16-18, 20, 27-30, 36, 44, 48, 58, 59, 65, 66, 68-71, 77, 79, 82-84, 88, 93, 99, 104-106, 108, 118, 127-129, 131, 132, 134, 135, 137, 142, 145, 148-150, 155, 158, 162, 164, 166, 168, 170, 173, 184, 186 ALGOMAN OROGENY ...... 7 ALICE LAKE ...... 42, 43 ALICE LAKE QUADRANGLE ...... 43 ALKALI OLIVINE BASALT...... 63 ALKALIC COMPLEX...... 5, 9, 11, 12, 14-17, 21, 29, 34-38, 40, 41, 44, 52, 53, 55, 59-61, 68, 72, 75-77, 79, 81, 84, 85, 91-93, 95-102, 109-111, 115, 116, 124, 125, 127, 130-132, 134-138, 140, 148-151, 153, 157, 158, 161, 162, 166, 170, 171, 176-180, 183, 184 ALKALINE...... 5, 9, 11, 12, 14-17, 21, 25, 29, 34-38, 40, 41, 44, 52, 53, 55, 59-61, 66, 68, 72, 75-77, 79, 81, 84, 85, 88, 91-93, 95-102, 104, 109-111, 115, 116, 124, 125, 127, 130-132, 134-138, 140, 148, 149, 151, 153, 157, 158, 161, 162, 166, 168, 170, 171, 176-180, 183, 184 ALKALINE BASALT...... 44 ALKALINE EARTH METALS...... 100 ALKALINE GABBRO ...... 176 ALKALINE INTRUSION ...... 5, 9, 11, 12, 14-17, 21, 34-38, 40, 41, 44, 52, 53, 55, 60, 61, 68, 72, 75, 77, 79, 81, 84, 85, 91-93, 95-102, 109-111, 115, 116, 124, 125, 127, 130, 131, 136-138, 140, 148, 149, 151, 153, 157, 158, 161, 162, 166, 170, 171, 176-180, 183, 184 ALKANES ...... 13, 26, 49, 77, 78, 107, 111 ALLANITE...... 181 ALLEMONTITE ...... 55 ALLEN LAKE CARBONATITE ...... 149 ALLOUEZ BASIN ...... 157 ALLOUEZ CONGLOMERATE ...... 23, 99, 182

216 ALLOUEZ FAULT...... 23 ALLOUEZ GAP FAULT ...... 21, 178 ALLOUEZ MINE...... 23, 38, 39, 187 ALLOY ...... 24, 144 ALLUVIAL DEPOSITS...... 189 ALLUVIAL DIAMONDS ...... 10 ALLUVIAL FANS ...... 168 ALLUVIAL PLAINS ...... 131 ALNÖITE ...... 85 ALONA BAY ...... 8, 58, 59, 70, 71, 93, 129, 173 ALTAITE...... 61, 124, 125, 130, 149 ALTERATION ...... 5, 8, 10, 13, 14, 16, 20-23, 29, 38, 41, 55, 57, 61, 64, 69, 72-74, 76, 77, 81, 82, 86, 91, 92, 94, 97-99, 108, 112, 113, 117, 118, 122, 127, 132, 133, 135, 144, 145, 148, 150-154, 159, 161-163, 172, 177, 179, 187 AMADEUS BASIN...... 45 AMETHYST...... 44, 80, 84, 166, 167, 175 AMETHYSTINE...... 92 AMNICON FALLS...... 45, 101, 111 AMNICON RIVER...... 45, 84 AMORPHOUS KEROGEN ...... 170 AMPHIBOLE ...... 10, 18, 61, 68, 97, 116, 117, 125, 130, 142, 164 AMPHIBOLITES ...... 160 AMYGDALOID ...... 21, 23, 24, 38, 39, 69, 178, 179, 181, 187 AMYGDALOIDAL ...... 8, 24, 55, 133, 161, 165 AMYGDALOIDAL BASALT ...... 8, 55 AMYGDULE ...... 21, 152, 154, 165 ANALCITE ...... 23, 37 ANALYSIS ...... 5, 10, 11, 13, 22, 24, 37, 38, 41, 44, 49, 51, 55, 76, 83, 85, 95, 99, 100, 108, 120, 122, 125, 128, 131, 137, 138, 144, 150, 151, 155, 170, 173, 186, 187 ANALYTICAL TECHNIQUES ...... 22, 35, 44, 73, 86, 135, 144, 155, 159 ANATASE ...... 108 ANDESITE ...... 6, 8, 63-65, 94, 96, 175 ANIMIKIE...... 5, 6, 8, 17-19, 26, 28-36, 38, 39, 42, 43, 55-60, 62, 65-69, 72, 80, 82-84, 86, 87, 91-95, 101, 103, 106, 107, 110, 111, 114, 117, 119-121, 124, 126, 132, 135-137, 140-144, 149, 153, 156-158, 160, 161, 164, 166, 167, 169, 172, 173, 179, 180, 185, 188, 189 ANIMIKIE BASIN...... 5, 19, 32-35, 43, 59, 60, 66, 67, 69, 83, 86, 91, 94, 95, 101, 103, 107, 110, 111, 119, 120, 132, 135, 153, 160, 185, 188, 189 ANIMIKIE GROUP ...... 5, 6, 8, 19, 26, 28, 31, 35, 36, 38, 42, 43, 56, 57, 59, 60, 67, 69, 72, 80, 84, 91, 92, 94, 95, 106, 107, 110, 111, 114, 117, 135, 141-144, 149, 153, 156, 157, 164, 166, 167, 169, 172, 173, 185, 188 ANKENY BASIN ...... 8 ANKERITE ...... 23, 91 ANNABERGITE ...... 55, 124, 167 ANOKA COUNTY ...... 119, 157 ANOKA FAULT ...... 163 ANOROGENIC ...... 80, 123, 166, 185 ANORTHOSITE ...... 21, 33, 42, 44, 57, 60, 63-65, 67, 74, 77, 86, 91, 94, 96, 107, 113-115, 121, 125, 129, 131, 132, 138, 140, 143, 150, 174 ANORTHOSITIC SERIES ...... 19, 37, 42, 43, 52, 60, 101, 104, 113-115, 119, 138, 144, 150, 155, 163, 164, 167, 174 ANTICLINE ...... 11, 16, 23, 46, 58, 74, 79, 88, 94, 104, 105, 107, 120, 153, 155, 163, 169, 182, 186 ANTICLINES ...... 6, 46, 56, 105, 142, 183 ANTIMONIDES...... 23, 61, 124, 125, 130 ANTIMONY...... 37, 121, 124, 125, 130, 146, 184 ANTRIM SHALE...... 15, 78 APATITE...... 21, 61, 73, 89, 110, 117, 143, 148 APLITE...... 63 APOLLO...... 19, 145 APOLLO 11...... 19, 145 APOLLO 12...... 145 APOPHYLLITE ...... 23 APOSTLE ISLANDS ...... 18, 108, 129 APPLICATIONS...... 70, 76 AQUATIC ...... 122 AQUEOUS ...... 25, 135, 136, 151 AQUIFERS ...... 72, 165 ARCADIAN LODE...... 187 ARCADIAN MINE...... 23, 187 ARCHEAN ...... 5, 7, 9-11, 13-22, 25, 27-38, 40, 43, 47, 48, 51, 52, 54, 56-60, 62, 63, 65, 67-70, 72-75, 77, 78, 80, 83-86, 88-92, 94-96, 101- 105, 108, 111, 114, 119-123, 125-127, 129-132, 137, 140, 146, 148, 149, 152-154, 156-160, 163, 164, 166, 169, 173, 175, 176, 184, 185, 187, 188, 190 ARCHEAN BASEMENT...... 166 ARCHEOLOGY...... 81, 162, 184

217 ARENITE ...... 47, 75, 101 ARGENTINA ...... 64, 189 ARGENTITE...... 55, 92, 124, 167 ARGILLITE...... 62, 95, 107 ARGOR CARBONATITE COMPLEX ...... 149 ARIZONA...... 5, 37, 46, 76, 81, 83, 92, 106, 111, 121, 133, 174 ARKANSAS ...... 111, 159, 174, 176, 189 ARKOSE...... 16, 55, 121 ARMENIA MINE...... 134 ARNOLD MINE...... 23 AROMATIC HYDROCARBONS ...... 13 ARRAYS...... 173 ARROWHEAD MINE ...... 56 ARSENIAN COPPER...... 77 ARSENIC ...... 23, 37, 39, 56, 71, 77, 92, 118, 121, 124, 125, 130, 144, 182, 184 ARSENIDES...... 23, 55, 61, 74, 85, 92, 117, 118, 124, 125, 130, 144, 147, 161, 167 ARSENOPOLYBASITE...... 55 ARSENOPYRITE...... 39 ARUMBERA SANDSTONE ...... 46 ARUNTA BLOCK ...... 65 ASBESTOS...... 146, 149 ASH...... 55, 87, 104, 185 ASH RIVER QUADRANGLE ...... 104 ASHBED AMYGDALOID ...... 23 ASHBED LODE...... 23 ASHBED MINE ...... 96 ASHBURTON TROUGH ...... 65 ASHLAND ...... 7, 9, 12, 18, 40, 45, 48, 56, 57, 82-84, 89, 98, 105, 106, 108, 122, 123, 136, 146, 160, 165-167, 170, 188 ASHLAND 2 DEGREE QUADRANGLE ...... 40, 57, 122, 146 ASHLAND COUNTY ...... 9, 12, 18, 45, 48, 82-84, 89, 98, 105, 106, 108, 122, 123, 136, 146, 160, 165-167, 170, 188 ASIA ...... 13, 45, 46, 64, 100, 125, 141, 148, 166, 170, 179, 181, 189 ASSIMILATION...... 17, 36, 43, 49, 89, 97, 103, 116, 127, 130, 141, 143, 144, 156, 169, 180 ASTHENOSPHERE...... 28, 83, 93, 158 ASTHENOSPHERIC MANTLE ...... 158 ATHENS SHEAR ZONE...... 91 ATLANTIC AMYGDALOID ...... 23 ATLANTIC LODE...... 23 ATLANTIC MINE ...... 23, 162, 181 ATMOSPHERE...... 169 ATOKITE ...... 124, 130, 149 ATTENUATION ...... 63 AU TRAIN FORMATION...... 9, 60 AUGITE ...... 42, 62, 89, 115, 154 AUGUSTA COUNTY ...... 111 AULACOGEN ...... 90, 112, 174 AUREOLE...... 5, 8, 18, 95, 144, 159, 167 AUSTRALASIA...... 129 AUSTRALIA...... 10, 15, 21, 45, 46, 65, 85, 117, 125, 129, 130, 137, 180, 189 AUSTRIA ...... 92, 117 AUTHIGENESIS ...... 139 AUTHIGENIC...... 158 AUTOCLAVE...... 68 AVAILABILITY ...... 92, 105, 115, 141 AZURITE ...... 55

(B)

B DRIFT ...... 6, 43, 92, 106, 107 BABBITT ...... 6, 9, 13, 21, 26, 30, 31, 33-35, 43, 48, 49, 53, 56, 61-63, 66, 73, 74, 80, 85, 87, 88, 92, 93, 100, 101, 104-107, 115, 117, 118, 121, 122, 126, 135, 136, 142-144, 147, 150, 156, 157, 163-165, 167, 171, 172, 178, 181 BABBITT SE QUADRANGLE ...... 33 BACTERIA...... 49 BAD RIVER ...... 84, 122, 123, 167, 184 BAD RIVER DOLOMITE ...... 122, 123, 167, 184 BADDELEYITE ...... 16, 94, 174 BADGER MINE ...... 55, 92 BALD EAGLE INTRUSION...... 7, 32, 35, 44, 104, 116, 119, 138, 164 BALD EAGLE LAKE...... 138 BALDWIN CREEK KIMBERLITE...... 104

218 BALL CLAY...... 74 BALTIC AMYGDALOID ...... 23, 39 BALTIC CONGLOMERATE ...... 181, 182 BALTIC LODE...... 23 BALTIC MINE...... 23, 162, 181 BALTIC SHIELD...... 65 BAMOOS LAKE...... 115 BAPTISM RIVER...... 48, 63 BARABOO DISTRICT...... 105 BARABOO INTERVAL...... 48, 66 BARABOO SEQUENCE...... 123 BARAGA COUNTY ...... 8, 11, 12, 28, 30, 61, 66, 69, 106, 137, 142, 150, 163, 175, 182, 183 BARAGA DIKES ...... 8, 52, 66, 70, 166, 179 BARAGA GROUP ...... 66, 173 BARB LAKE FAULT...... 56 BARDON PEAK ...... 55, 83, 85, 146 BARDON STATE PARK ...... 87 BARE HILL RHYOLITE ...... 145 BARE HILLS ...... 35 BARE HILLS FELSITE...... 35 BARITE...... 36, 55, 71, 76, 84, 92, 107, 110, 124, 133, 146, 153, 161, 167 BARK BAY...... 126 BARNEY CREEK FORMATION ...... 46 BARRON COUNTY ...... 31, 99, 118 BASAL CONTACT ...... 153, 156, 180 BASAL ZONE...... 41, 93, 105, 115, 117, 143, 151, 161 BASALT ...... 8, 9, 13, 19, 23, 26-28, 30, 38, 39, 44, 48, 55, 58, 59, 61-65, 69, 80, 85, 87, 90, 91, 94, 96, 98, 101, 105, 106, 108-110, 118, 126, 127, 129, 132-134, 142, 145, 147, 151-154, 167, 173, 174, 182, 183 BASALTIC ANDESITE ...... 64, 65 BASALTIC HORNFELS ...... 48, 147 BASALTS...... 6, 8, 12-14, 16, 19-21, 27, 29, 30, 39, 44, 47, 48, 52, 53, 58, 63-65, 69, 72, 76, 87, 91, 93, 100, 101, 105, 106, 111, 114, 116, 118, 123, 127, 129, 132-134, 145, 153, 158, 162, 170-172, 182, 183, 187 BASE METAL ANALYSES ...... 7, 8, 16, 23, 31, 52, 53, 56, 57, 61, 64, 66, 80, 106, 107, 118, 121, 136, 141, 145, 148, 149, 151, 155-157, 161-164 BASE METALS ...... 18, 41, 116, 117, 122, 123, 133, 156, 159, 164, 165, 176 BASEMENT ...... 7, 8, 11, 16, 17, 20, 27-29, 33, 37, 38, 40, 46, 65, 68, 71, 74, 78, 79, 81, 85, 90, 98, 99, 102, 105, 109, 110, 114, 131, 137, 142, 157, 158, 160, 164, 166, 169, 174, 177, 186, 188 BASEMENT CONTROL ...... 71 BASIN...... 5, 7, 8, 11, 13, 19, 20, 22, 25, 27-30, 32-35, 41, 43, 45-47, 50, 51, 53, 55, 56, 59, 60, 64, 66-71, 75, 78, 79, 81, 83, 84, 86, 89- 92, 94, 95, 97, 99, 101-103, 105, 107-111, 113, 114, 118-120, 123, 126, 127, 131, 132, 135, 137, 139, 142, 150, 151, 153, 154, 157, 158, 160, 161, 163-165, 168, 169, 173-175, 177-179, 182-190 BASINAL-TYPE BRINE...... 158 BASINS...... 7, 11, 27, 39, 45-47, 56, 71, 75, 97, 108, 109, 129, 133, 150, 160, 161, 175, 176 BASS ISLANDS DOLOMITE ...... 78 BASTNAESITE ...... 51 BATCHAWANA BAY ...... 10, 17, 58, 59, 68, 104, 118, 128, 132 BATCHAWANA GREENSTONE BELT ...... 9, 10, 59, 104, 132 BATHOLITHS ...... 160 BATHTUB ...... 43, 74, 106, 115, 122, 136, 157, 171, 172 BATHTUB LAYERED SERIES ...... 115 BAUDETTE SE QUADRANGLE ...... 104 BAYFIELD...... 5-7, 9, 11, 14, 16, 18, 27, 28, 35, 36, 39, 43-46, 56, 69, 79, 81-83, 95, 98, 99, 102, 104, 106, 108, 111, 112, 114, 118, 120, 122-126, 129-131, 133, 136, 137, 140, 146, 154, 157, 159, 160, 165-167, 169-171, 178, 181, 182, 186, 188, 189 BAYFIELD BASIN...... 45 BAYFIELD COUNTY ...... 27, 46, 133, 189 BAYFIELD GROUP...... 5, 112, 125 BAYFIELD PENINSULA ...... 129 BEAR LAKE...... 24, 34, 64, 86, 92, 163 BEAR LAKE FELSITE ...... 34 BEAR LAKE INTRUSION ...... 86, 163 BEAR LAKE RIDGE...... 64 BEAR PROVINCE...... 52 BEAR RIVER QUADRANGLE ...... 104 BEARDMORE-GERALDTON BELT...... 184 BEARTOOTH MOUNTAINS ...... 17, 21, 40, 76, 104, 125 BEAVER BAY ...... 2, 14, 18, 31, 32, 57, 60, 63, 64, 66, 67, 76, 85, 86, 93, 104, 113-115, 119, 121, 125, 157, 164 BEAVER BAY COMPLEX...... 2, 14, 18, 31, 32, 57, 60, 63, 64, 66, 67, 76, 85, 86, 93, 104, 113-115, 119, 121, 125, 157, 164 BEAVER BAY GABBRO ...... 93, 113, 115 BEAVER ISLAND...... 55 BEAVER JR. MINE ...... 55

219 BEAVER MINE ...... 55, 92 BEAVER RIVER ...... 18, 48, 64, 85, 113-115, 119, 139 BEAVER RIVER DIABASE ...... 18, 85, 113-115, 119, 139 BEDDED PYRRHOTITE UNIT...... 106, 156, 189 BEDROCK ...... 16, 28, 29, 38, 39, 43, 46, 56, 64, 85, 87, 98, 113, 114, 119-121, 123, 132, 141, 159, 168, 177, 182, 183, 186, 188 BELL CREEK GNEISS ...... 121 BELL CREEK GRANITE ...... 189 BELL HARBOR ...... 63 BELL SHALE ...... 78 BELLE PLAINE FAULT ...... 6, 33, 39, 161 BELLINGHAM GRANITE ...... 60 BELLINGHAM QUADRANGLE ...... 104 BELT GROUP ...... 65 BENEFICIATION...... 84, 85, 96, 97, 147, 148, 152, 157, 162, 174, 175 BENTON COUNTY ...... 69 BENY GREENSTONE BELT ...... 75 BEREA SANDSTONE ...... 78 BERGLAND...... 75, 94, 98, 109, 141 BERGLAND NE QUADRANGLE ...... 141 BERGLAND QUADRANGLE ...... 94 BERYLLIUM ...... 146 BESSEMER...... 46, 47, 61, 95, 107, 123, 131, 154, 167 BESSEMER FORMATION...... 107, 154 BETE GRISE BAY ...... 47, 112, 126, 181 BETH LAKE...... 42 BETH LAKE QUADRANGLE ...... 42 BIBLIOGRAPHY...... 1, 1, 4, 5, 40, 48, 49, 59, 94, 120, 132, 136 BIG BEAVER HOUSE CARBONATITE COMPLEX ...... 15, 59, 148, 149 BIG COTTONWOOD FORMATION ...... 83 BIG FALLS QUADRANGLE ...... 104 BIG TRAP...... 38, 39 BIOGEOCHEMISTRY...... 10, 26, 85, 188 BIOLEACHING ...... 126 BIOLOGICAL MARKER...... 15 BIOLOGICAL SCIENCES...... 100 BIOLOGY...... 100 BIOMARKERS...... 77, 78, 139 BIOSTRATIGRAPHY ...... 109 BIOTITE ...... 6, 29, 34, 40, 52, 53, 59, 61, 69, 72, 73, 95, 97, 101, 116, 117, 130, 132, 137, 142, 150, 160, 177 BIOTURBATION...... 162 BIRCH LAKE...... 41, 49, 74, 85, 98, 110, 111, 117, 147, 148, 156, 181 BIRCHDALE SE QUADRANGLE ...... 104 BIRKMOSE MEMBER ...... 11 BISMUTH...... 36, 37, 57, 82, 92, 98, 117, 121, 125, 146, 147 BISMUTHINIDES ...... 61 BISMUTHINITE...... 117 BISMUTHOTELLURIDES ...... 117 BITUMENS...... 29, 71, 77, 78, 107, 110, 130 BIWABIK FAULT ...... 152 BIWABIK IRON-FORMATION...... 13, 18-21, 33, 37, 56, 67, 68, 72, 95, 105, 117, 120, 124, 125, 136, 153, 156, 165, 176 BIWABIK NW QUADRANGLE ...... 104 BLACK BAY ...... 15, 100, 109, 110, 166, 167 BLACK BAY PENINSULA...... 100, 109, 110, 166 BLACK EARTH MEMBER...... 11 BLACK HAWK DISTRICT...... 92 BLACK LICK...... 111 BLACK RIVER...... 45, 60, 61, 78, 81, 84 BLACK RIVER FORMATION ...... 78 BLACK RIVER GROUP ...... 60 BLACK SANDS ...... 189 BLACK STURGEON FAULT...... 29 BLACK STURGEON RIVER ...... 15 BLACKHOOF RIVER ...... 69 BLAIR CREEK FORMATION ...... 160 BLESNER LAKE DIORITE...... 113 BLIND RIVER ...... 55 BLOATING CLAY...... 22, 74 BLOCK CAVING...... 88 BLOOMER FAULT ...... 123 BOHAI BAY BASIN ...... 45

220 BOHAI RIFT BASIN ...... 97 BOHEMIA CONGLOMERATE ...... 139, 187 BOHEMIA FAULT...... 145 BOHEMIA MINING DISTRICT...... 167 BOILING...... 92 BOIS BLANC FORMATION...... 78 BOLIVAR-MANSFIELD TECTONIC ZONE...... 16 BOLIVIA...... 161, 170 BOND FALLS ...... 112 BOONE COUNTY ...... 158 BORDEN TOWNSHIP CARBONATITE COMPLEX ...... 15, 149 BOREAL FOREST...... 5, 74 BOREHOLE ...... 6, 11, 22, 46, 55, 78, 90, 108, 119, 133, 155, 158, 161, 163, 173, 177, 178 BOREHOLES ...... 11, 16, 155, 173 BORNITE ...... 6, 8, 19-21, 23, 25, 36, 38, 51, 53, 55, 57, 58, 61, 73, 74, 77, 97, 108, 117, 121, 124, 125, 129, 130, 139-143, 145, 150, 153, 157, 165, 175, 182, 183, 187 BOROVSKITE ...... 124 BOULDER TRAIN...... 139 BOUMA SEQUENCE ...... 55 BOUNDARY ...... 11, 27, 44, 45, 54, 63, 110, 121, 134, 140, 145 BOUNDARY WATERS CANOE AREA ...... 54, 63, 110, 134 BRAUNITE ...... 76 BRAVOITE ...... 21, 103 BRAZIL...... 44, 100, 102, 159, 189 BRAZILIAN CRATON ...... 64, 65 BREAKWATER...... 63 BREAKWATER TRACHYBASALT FLOW ...... 63 BRECCIA ...... 10, 17, 58, 64, 65, 92, 96, 111, 128, 130, 146, 148, 150, 153, 162, 165, 175, 176 BRECCIA PIPE...... 10, 17, 58, 128, 146, 148 BRECCIATION ...... 10, 17, 20, 21, 77, 92, 96, 109, 148-150 BRENNA FORMATION ...... 74 BRENT CRATER...... 149 BRETON...... 17 BRICK CLAY...... 84 BRINES...... 41, 81, 88, 90, 121, 136, 139, 150, 158 BRITISH COLUMBIA...... 65, 76 BRITT DOMAIN ...... 40, 51, 161 BROMINE...... 90 BROWN MASSIVE BED...... 49 BRUCE PENINSULA...... 169 BRULE LAKE...... 26, 42, 43, 139 BRULE LAKE INTRUSIONS...... 26, 42, 43, 139 BRULE LAKE QUADRANGLE ...... 43 BRULE RIVER...... 63, 84 BRULE RIVER BASALTS ...... 63 BRULE RIVER RHYOLITE FLOW ...... 63 BRUNEAU CREEK QUADRANGLE ...... 188 BUELL PARK DIATREME ...... 111 BURIAL METAMORPHISM...... 101, 152, 162 BURIED CHANNELS ...... 170 BURNETT COUNTY ...... 69, 118 BURRITT ISLAND ALKALIC COMPLEX ...... 149 BUSHVELD COMPLEX ...... 13, 21, 30, 104, 125, 167 BUSHY BAY FAULT ...... 11, 104 BUTANE...... 133 BUTLER FLOW ...... 21 BUTTERNUT DEPOSIT ...... 105 BWCA...... 54, 63, 110, 134 B-HORIZON...... 7, 41

(C)

C DRIFT ...... 6, 92, 106, 107 CABIN CREEK PORPHYRITIC DIORITE ...... 114 CABIN LAKE QUADRANGLE ...... 114 CABRIITE...... 13 CADMIUM...... 24, 37, 182 CALCITE...... 21, 23, 26, 35, 40, 55, 71, 84, 90, 92, 107, 124, 146, 153, 161, 167 CALCIUM CHLORIDE...... 135

221 CALC-ALKALINE...... 66 CALC-SILICATES...... 68 CALEDONIA MINE ...... 21 CALICHE ...... 89, 181 CALIFORNIA...... 5, 14, 44, 76, 81, 86, 88, 151, 152, 159, 174, 187, 189 CALLANDER BAY ALKALIC COMPLEX ...... 149 CALUMET ...... 17, 23, 39, 81, 89, 108, 133, 139, 158, 162, 178, 181-183, 187 CALUMET AND HECLA CONGLOMERATE ...... 23, 39, 89, 178, 181, 182 CALUMET AND HECLA CONGLOMERATE MINE ...... 23, 178 CALUMET AND HECLA MINE ...... 162, 181, 182, 187 CAMBRIAN ...... 5, 8, 10, 11, 15, 21, 24, 29, 30, 38, 40, 44, 47, 48, 52, 55, 56, 59, 69, 71, 76, 78, 79, 89, 91, 96, 98-101, 109, 110, 114, 118, 120, 122, 123, 132, 140, 145, 147, 149, 158, 159, 170, 171, 178, 183, 184 CAMBRIAN PRECAMBRIAN BOUNDARY ...... 140 CAMPBELL COUNTY ...... 158 CANADA ...... 5, 8-18, 20, 21, 23-31, 33-44, 46-49, 51-66, 68-73, 75-86, 88, 90-113, 115, 116, 118, 119, 121, 123-132, 134-142, 144-151, 153-155, 157-180, 183-186, 188, 189 CANADIAN SHIELD ...... 12, 25, 29, 42, 47, 52, 53, 55, 63, 65, 70, 86, 90, 92, 98, 99, 121, 133, 145, 160, 161, 170, 189 CANE VALLEY DIATREME ...... 111 CAPE GARGANTUA ...... 8, 11, 104, 137, 173 CAPE GARGANTUA LAVAS ...... 137 CAPE SMITH...... 13, 27, 65 CAPE SMITH BELT...... 13 CAPE SPENCER FLOW ...... 23 CARB LAKE CARBONATITE COMPLEX ...... 149 CARBON...... 5, 15, 46, 50, 74, 77, 78, 81, 83, 89, 91, 92, 103, 107, 111, 112, 128, 133-135, 144, 158, 167 CARBON DIOXIDE...... 135 CARBON ISOTOPES...... 5, 77, 78, 83, 89, 92, 103, 107, 111, 128, 144, 158, 167 CARBONATE ...... 23, 25, 35, 63, 78, 89, 91, 94, 98, 102, 117, 119 CARBONATE IRON-FORMATION...... 63 CARBONATITE ...... 15, 17, 21, 29, 35, 36, 40, 44, 53, 59, 72, 76, 85, 88, 93, 99, 102, 111, 116, 134, 135, 139, 148-151, 153, 161, 162, 166-168, 170, 177, 179 CARBONATIZATION ...... 76 CARBONIFEROUS ...... 76 CARGILL TOWNSHIP CARBONATITE COMPLEX ...... 15, 59, 148, 149 CARIBBEAN PLATE...... 189 CARIBOO BASIN ...... 123 CARIBOU ISLAND...... 69 CARIMONA MEMBER ...... 11 CARLTON COUNTY ...... 32, 35, 39, 66, 67, 69, 72, 86, 91, 104, 107, 111, 119, 120, 126, 141, 164, 171, 178, 179, 188 CARLTON COUNTY DIKES ...... 32, 66, 91, 104, 107, 141, 179 CARLTON PEAK...... 65 CARNEY LAKE GNEISS ...... 121 CARP RIVER ...... 81, 141 CARP RIVER QUADRANGLE ...... 81, 141 CARROLL COUNTY ...... 7, 8, 56, 102, 110, 134, 138, 152, 153, 174, 186 CARTIER GRANITE...... 75 CARVER COUNTY ...... 161, 163 CARVER-CHISAGO HORST ...... 163 CASCADE RIVER...... 55, 65, 87 CASCADE RIVER STATE PARK ...... 65 CATALOGS ...... 189 CATARACT FORMATION...... 78 CEDAR MOUNTAIN COMPLEX ...... 15, 16 CEDAR VALLEY FORMATION ...... 11 CEMENT...... 89, 158 CEMENTATION ...... 5, 71, 92, 130 CENOZOIC...... 7, 9, 11, 16, 18, 21, 22, 25, 27, 30, 33, 35, 38, 40, 44, 46, 47, 59, 61, 65, 69, 74, 76, 78, 90-92, 98, 104, 105, 111, 116, 118, 119, 122, 131, 132, 162, 163, 167, 170, 172, 179-181, 188, 189 CENTENNIAL MINE...... 15, 89, 181 CENTER I...... 116 CENTER II ...... 35, 116 CENTER III...... 102, 116, 127 CENTRAL AMERICA...... 76, 189 CENTRAL BASIN PLATFORM...... 5, 90 CENTRAL FISSURE ...... 23 CENTRAL GNEISS BELT...... 54 CENTRAL GRABEN...... 97 CENTRAL IOWA...... 33, 132 CENTRAL METASEDIMENTARY BELT...... 54 CENTRAL MINE...... 21, 23

222 CENTRAL MINNESOTA ...... 5, 6, 13, 29, 31, 32, 34, 35, 40, 52, 56, 69, 73, 95, 110, 118-120, 160, 163, 171, 172, 188 CENTRAL PLAINS OROGEN ...... 16, 80, 160, 174 CERAMIC TILE...... 74 CERARGYRITE...... 124, 167 CERUSSITE ...... 55 CH4 ...... 133, 135, 155 CHALCEDONY ...... 145 CHALCOCITE ...... 8, 19, 23-26, 34, 38, 51, 55, 58, 71, 73, 74, 77, 88, 100, 107, 120, 124, 125, 128, 129, 139-141, 145, 150, 153, 157, 161, 165, 175, 178, 182, 183, 187 CHALCOPYRITE...... 6, 7, 13, 19-21, 23, 25, 35, 36, 38, 39, 42, 51, 53, 55, 57, 58, 61, 69, 71, 73, 74, 77, 85, 91, 92, 97, 103, 108, 109, 114, 116, 117, 120-122, 124, 125, 129, 130, 140-145, 147, 153-155, 157, 161, 165, 167, 175, 176, 180, 182, 183, 187, 188 CHALLENGE MINE ...... 95 CHAMPION MINE...... 23, 111, 162, 181 CHAMPION QUADRANGLE ...... 121, 163 CHANGCHENG FORMATION ...... 45 CHANNEL LAKE MEMBER ...... 8, 12, 134, 174 CHANNELS ...... 170, 171 CHARACTERIZATION...... 84, 87, 108, 109, 137, 170, 173, 181 CHASSEL QUADRANGLE ...... 181 CHASSELL QUADRANGLE ...... 16 CHEBOUGAMOU ...... 146 CHEMICAL DEMAGNETIZATION...... 76 CHEMICAL REMANENT MAGNETIZATION...... 50, 76, 173 CHEMICALLY PRECIPITATED ROCKS...... 75 CHEMISTRY ...... 6, 10, 13, 18, 20, 21, 30, 31, 35, 36, 40, 42-44, 49, 51, 53, 56, 57, 61, 64, 66, 69, 73, 82, 86, 88, 89, 93-95, 97, 98, 100, 103, 106, 108-110, 113, 115-117, 121, 122, 124-126, 130, 131, 134, 136, 138, 141, 143-154, 156, 157, 162-166, 169, 172, 176, 180, 181 CHEMOSTRATIGRAPHY ...... 59, 93 CHENGWATANA VOLCANIC GROUP ...... 6, 30, 38, 39, 53, 66, 69, 90, 98, 120, 123, 168 CHEQUAMEGON FORMATION ...... 108 CHEQUAMEGON NATIONAL FOREST ...... 9 CHEROKEE ...... 42, 163 CHEROKEE LAKE ...... 42 CHEROKEE LAKE QUADRANGLE ...... 42 CHESAPEAKE TECTONIC ZONE...... 16 CHICAGO BAY LAVAS ...... 44 CHILDERS ...... 160 CHINA...... 45, 46, 97, 125, 166 CHIPMAN LAKE...... 17, 88, 148-150, 167 CHIPMAN LAKE CARBONATITE COMPLEX ...... 148-150 CHIPPEWA COUNTY ...... 173 CHIPPEWA FELSITE ...... 94, 187 CHIPPEWA HILL...... 94 CHIPPEWA MINE...... 80 CHISAGO COUNTY ...... 38 CHLORAPATITE...... 143 CHLORIDE...... 7, 52, 74, 135, 150 CHLORIDES...... 6, 7, 25, 41, 74, 90, 100, 117, 121, 150 CHLORINE...... 6, 7, 21, 37, 41, 52, 61, 74, 90, 98, 117, 121, 130, 143, 150 CHLORITE...... 21, 23, 71, 73, 94, 107, 108, 110, 139, 181 CHLORITE FACIES...... 94, 110 CHROMATOGRAMS ...... 26, 74, 78 CHROMATOGRAPHY ...... 49, 80 CHROME DIOPSIDE...... 25 CHROME SPINELS...... 103, 145 CHROMIFEROUS MAGNETITE...... 69 CHROMITE ...... 13, 89, 161, 183, 188 CHROMIUM...... 9, 36, 53, 82, 97, 103, 105, 117, 145, 147, 156, 161, 183 CHROMIUM HERCYNITE...... 53 CHROMIUM SPINEL ...... 36, 53, 97, 103, 117, 145 CHUAR GROUP ...... 46 CHUKOTAT SUITE ...... 27 CHURCHILL PROVINCE...... 52, 72, 98 CINCINNATI ARCH ...... 11, 158, 164 CIRRUS LAKE...... 115 CITY HALL ICELANDITE ...... 65 CLAM LAKE ...... 48, 51, 90 CLAM LAKE INTRUSION...... 51, 90 CLARK MINE...... 23

223 CLASSIFICATION...... 104 CLASTIC...... 8, 16, 21, 27, 28, 30, 39-41, 44, 45, 47, 50-55, 67, 70, 74, 76, 81, 83, 84, 86-89, 92, 94-96, 98-100, 108, 111, 112, 115, 120, 126, 128, 130, 131, 133, 134, 139, 142, 145, 151, 152, 158, 161, 162, 164, 165, 168, 170, 171, 173, 175, 184, 185, 187, 188 CLASTIC DIKE ...... 40, 52, 67, 86, 96, 151, 175, 184, 185 CLASTIC ROCKS ...... 8 CLASTICS ...... 8, 11, 24, 30, 31, 39, 40, 44, 45, 47, 49, 54, 69, 70, 76, 78, 87, 92, 94, 105, 107, 110, 111, 119, 125, 131, 132, 139, 157, 158, 164, 166, 168, 183-186, 189 CLASTS...... 75, 87 CLAUSTHALITE...... 77, 91, 117, 130 CLAY-HOWELLS ALKALIC COMPLEX ...... 15, 99, 149, 166 CLAY...... 5, 15, 16, 22, 45, 73, 74, 84, 99, 109, 138, 139, 149, 166, 188 CLAY MINERALOGY ...... 138 CLAY MINERALS...... 73, 109, 139 CLAYTON COUNTY ...... 188 CLEAR LAKE...... 63 CLEAVAGE ...... 55, 107 CLEVELAND COUNTY ...... 111 CLIFF FISSURE...... 23, 187 CLIFF MINE...... 21, 23, 38, 146, 187 CLIMATE...... 17, 115 CLIMATOLOGY ...... 169 CLINOPYROXENE...... 6, 53, 57, 61, 89, 97, 106, 108, 113, 115, 121, 125, 130, 131, 154 CLINOPYROXENES...... 93 CLOQUET LAKE QUADRANGLE ...... 33 CLOQUET QUADRANGLE ...... 35, 104, 141, 188 CLOUD ZONE ...... 6, 115, 147 CLUSTERS...... 98 CO ...... 1, 24, 25, 30, 64, 79, 80, 86, 92, 114, 115, 118, 120, 141, 146, 157, 160, 174 CO2 ...... 135 COATES FAULT ...... 13 COBALT...... 23, 25, 36, 37, 39, 55, 92, 115, 151, 152, 157, 160 COBALTITE...... 55, 117, 125 COCORP...... 25, 45, 58, 75, 97, 112, 155, 156, 186, 189 COKRIGING...... 134 COLD PLUME ...... 27 COLDWATER LAKE MEMBER ...... 8 COLDWELL COMPLEX ...... 5, 9, 11, 12, 15-18, 34-38, 40, 41, 44, 52, 55, 60, 61, 68, 72, 75, 77, 79, 81, 84, 85, 91, 92, 95-102, 109-111, 115, 116, 124, 125, 127, 130, 131, 136-138, 140, 148-150, 157, 158, 162, 166, 170, 171, 176-180, 183, 184 COLDWELL PENINSULA ...... 35, 158 COLLECTING ...... 14, 73, 145 COLLINS SILVER MINE ...... 183 COLLISION ...... 27, 61, 80 COLLISION ZONE...... 80 COLOR ...... 44, 80, 119, 190 COLORADO...... 5, 10, 17, 33, 38, 60, 76, 89, 111, 167, 173, 174, 178, 187, 189 COLORADO LINEAMENT ...... 33 COLORADO PLATEAU ...... 111 COLORADO PLATEAU KIMBERLITES ...... 111 COLUMBIA RIVER PROVINCE ...... 44, 159 COLUMBIUM ...... 68 COLUMN LEACHING ...... 30, 49 COLVIN CREEK ...... 136, 156, 172 COLVIN CREEK HORNFELS ...... 172 COMMONWEALTH OF INDEPENDENT STATES...... 170 COMPEAU CREEK GNEISS...... 121 COMPOSITION ...... 16, 19, 25, 30, 31, 44, 50, 56, 64, 81, 89, 100, 107, 111, 119, 127, 133, 138, 140, 144, 155, 174, 181, 189 COMPRESSION...... 10, 20, 24, 26-28, 35, 78, 91, 104, 105, 128, 142, 186 COMPRESSIONAL WAVE ...... 69, 112, 158 CONCENTRATE ...... 37, 68, 74, 157, 162, 165 CONCENTRATION...... 10, 143, 175 CONDENSATE ...... 45 CONDUCTIVITY ...... 17, 22, 25, 90, 189 CONGLOMERATE ...... 5, 6, 8, 10, 11, 15, 21-25, 27-29, 36-39, 41, 44-47, 50, 61, 62, 68-71, 75, 78, 79, 81, 82, 84, 85, 87-90, 93-99, 101, 103, 107, 109, 112, 118, 119, 124, 126, 128-131, 133, 134, 136, 139, 141, 145, 146, 154, 162, 166-168, 170, 171, 173, 175, 178, 181-183, 185, 187 CONGO CRATON ...... 65 CONNECTICUT ...... 67, 159 CONODONTS ...... 109 CONSTRUCTED WETLANDS ...... 96

224 CONTACT AUREOLE...... 5, 8, 18, 95, 144, 159, 167 CONTACT METAMORPHISM...... 5, 6, 8, 13, 14, 18-20, 31, 33, 35, 48, 49, 56, 62, 65, 67, 68, 72, 73, 84, 90-92, 95, 101, 105, 106, 114, 119, 120, 124, 126, 136, 137, 140, 141, 143, 144, 153, 159, 165, 167, 171, 172, 176, 180, 189 CONTAMINATION...... 6, 13, 27, 30, 36, 47, 49, 52, 97, 100, 103, 104, 106, 139, 141, 155, 167, 172 CONTINENTAL...... 14, 15, 27, 30, 47, 52, 58, 62, 70, 77, 78, 80, 93, 109, 111, 128, 133, 152, 164, 165, 169, 178, 182, 189 CONTINENTAL CRUST...... 15, 47, 189 CONTINENTAL DRIFT ...... 128 CONTINENTAL MARGIN ...... 169 CONTROLS ...... 24, 41, 43, 80, 89, 90, 106, 107, 111, 120, 128-131, 133, 179, 181 CONVECTION ...... 27, 67, 189 COOK COUNTY ...... 7, 9, 11, 12, 14, 18, 26, 32, 38, 39, 42, 43, 47, 48, 53, 55, 62-67, 72, 86-88, 90, 94, 95, 98, 100, 105-107, 110, 114, 116, 117, 119-122, 124, 126, 127, 129, 131, 134, 138, 139, 151, 153, 154, 163-165, 172, 173, 179-181, 184-187, 189 COOK QUADRANGLE ...... 104 COPPER ...... 2, 5-31, 33-63, 66, 68-74, 76-82, 84-88, 90-92, 94-112, 114-118, 120-184, 186-190 COPPER CITY FLOW...... 28, 39, 133 COPPER CITY RHYOLITE ...... 34, 145 COPPER CREEK ...... 45 COPPER FALLS MINE...... 21, 23 COPPER FALLS STATE PARK...... 123 COPPER HARBOR ...... 10, 21, 22, 24, 25, 27-29, 37, 39, 41, 44-47, 50, 61, 68-71, 76, 78, 79, 81, 82, 84, 85, 87, 88, 90, 94, 96-98, 107, 109, 112, 124, 126, 128-131, 133, 134, 136, 137, 139, 141, 145, 146, 154, 166-168, 170, 171, 175, 182, 183, 187 COPPER HARBOR CONGLOMERATE ...... 10, 21, 22, 24, 25, 27-29, 37, 39, 41, 44-47, 50, 61, 68-71, 78, 79, 81, 82, 84, 85, 87, 88, 90, 94, 96-98, 107, 109, 112, 124, 126, 128-131, 133, 134, 136, 139, 141, 145, 146, 154, 166-168, 170, 171, 175, 182, 183, 187 COPPER HARBOR LAVAS ...... 137 COPPER ORES...... 29 COPPER PEAK...... 94 COPPER PORPHYRY ...... 17, 91 COPPER RANGE MINE ...... 23 COPPERCORP DEPOSIT ...... 68, 77, 166 COPPERMINE RIVER...... 13, 65, 76 COPPERMINE RIVER BASALTS ...... 13, 76 CORDIERITE...... 73, 103 CORDILLERAN ...... 165 CORE...... 6, 21, 27, 41, 51, 53, 56, 57, 61, 82, 87, 90, 103, 105, 117, 118, 135, 147, 151, 158, 166 CORES...... 30, 154, 173 COROCORO DEPOSITS...... 161 CORONATION GEOSYNCLINE ...... 84, 173 CORONITE...... 95 CORRELATION...... 1, 6, 16, 31, 32, 48, 54, 65, 70, 79, 91, 93, 99, 101, 106, 107, 121, 132, 134, 138, 152, 156, 160, 169, 173 COTTAGE GROVE FAULT ...... 6, 13, 39, 120, 123, 160 COTTON COVE MEMBER...... 8 COTTONWOOD RIVER ...... 48 COUNTRY ROCK ...... 97, 103, 141, 143, 180 COVELLITE ...... 38, 51, 53, 55, 71, 74, 77, 109, 124, 130, 145, 153, 165, 175, 183 COZENS MEMBER...... 8 CPX...... 53, 57, 89, 97, 106, 113, 115, 131, 154 CRACKS...... 31, 71, 177 CRADDOCK COVE ...... 91 CRAMER ...... 42, 98, 114 CRAMER QUADRANGLE ...... 98, 114 CRATER FACIES...... 98, 104, 176 CRATON...... 15, 17, 25, 64-66, 174 CRESWEL MINE...... 55 CRETACEOUS...... 11, 16, 25, 29, 74, 76, 92, 98, 111, 120, 132, 170, 176, 185 CREVICE ...... 52, 54, 67, 84, 96, 151, 185 CRISP POINT FAULT...... 105 CRISTOBALITE...... 63 CRITICAL METALS ...... 178 CRITICAL ZONE...... 30 CRITTENDEN COUNTY ...... 111 CROFTVILLE...... 63 CROFTVILLE BASALTS ...... 63 CROOKS TOWNSHIP ...... 57, 58, 161 CROSBYTON GEOPHYSICAL ANOMALY ...... 5 CROSS LAMINATION ...... 71 CROSS SECTION...... 29, 170 CROSS-BEDDING...... 71, 107, 129, 131, 167, 183 CRUSHED STONE...... 73 CRUSHER...... 96

225 CRUST...... 7, 10, 14, 15, 27-29, 31, 36, 39, 47, 51, 52, 54, 58, 63, 68, 70, 73, 78-81, 85, 91-93, 102, 105, 106, 109, 111-113, 127, 129, 133, 137, 150-152, 161, 162, 164, 169, 171, 173, 182, 186, 188, 189 CRUSTAL CONTAMINATION ...... 27, 100, 106, 155 CRUSTAL EVOLUTION...... 65, 121 CRUSTAL SAG ...... 28 CRUSTAL STRUCTURE...... 10, 14, 28, 36, 51, 52, 78, 90, 93, 102, 112, 129, 151, 152, 161, 162, 182, 188 CRYPTIC LAYERING...... 116, 145, 164 CRYSTAL...... 18, 29, 36, 48, 49, 57, 58, 77, 85, 100, 103, 115, 123, 127, 134, 140, 141, 161, 166, 167, 177, 180, 183 CRYSTAL FALLS DISTRICT...... 134 CRYSTAL FRACTIONATION ...... 127 CRYSTAL LAKE INTRUSION...... 29, 36, 48, 49, 57, 58, 77, 100, 103, 123, 127, 140, 141, 161, 166, 167, 177, 180, 183 CRYSTAL MUSH...... 115 CRYSTALLIZATION ...... 12, 19, 22, 30, 31, 36, 43, 48, 53, 93, 97, 103, 113, 115, 124-126, 131, 132, 141, 143, 144, 152, 155, 157, 159, 165, 169, 179 CUBANITE...... 6, 7, 13, 19-21, 35, 36, 53, 57, 61, 69, 73, 74, 85, 97, 103, 116, 117, 121, 130, 142-144, 147, 155, 157, 165, 175, 180 CUESTA MEMBER...... 8, 134 CUMMINGSVILLE MEMBER ...... 11 CUMMINGTONITE...... 18 CUMULATES...... 36, 41, 51, 53, 63, 103, 113-115, 126, 132, 151, 164 CUPRIFEROUS ...... 24, 52, 71, 130 CUPRITE...... 165, 175 CURRENT BEDDING...... 71 CURRENT DIRECTIONS...... 187 CURRIE TEMPERATURE ...... 175 CUSP RIPPLE MARKS...... 71 CUT AND FILL ...... 106 CUTFACE CREEK...... 55 CUYUNA IRON RANGE ...... 32, 73 CUYUNA RANGE ...... 13, 32, 60 CU-MO PORPHYRY...... 36 CYCLIC LAYERING...... 103 CYCLIC LAYERS ...... 113, 124 CYCLOHEXYL ALKANES ...... 77 CYPRUS NORTHSHORE MINING COMPANY...... 18 CZECH REPUBLIC ...... 44

(D)

D DRIFT ...... 92, 106, 107 DAKOTA COUNTY ...... 13, 45, 94, 119, 120 DALRADIAN...... 65 DAMARA...... 65 DARK LAKE QUADRANGLE ...... 104 DARK RIVER FAULT...... 152 DATA ACQUISITION...... 127 DATOLITE...... 21, 23, 66 DAVIEAUX ISLAND MEMBER ...... 8, 105, 134 DAVIS HILL ...... 81 DEBACA-SWISHER TERRANE ...... 5 DECCAN TRAPS...... 44, 100 DECLINATION ...... 77, 178 DECOLLEMENT ...... 188 DECORAH SHALE ...... 11, 74, 154 DEER PARK ANTICLINE...... 105 DEER YARD MEMBER ...... 8 DEFIANCE BASIN...... 8 DEFORMATION ...... 29, 35, 108, 118, 123, 142, 149, 158, 160, 161, 171 DELAWARE...... 21, 23, 38, 39, 90, 152 DELAWARE AULACOGEN...... 90 DELAWARE MINE...... 21, 23, 38, 152 DELAWARE QUADRANGLE ...... 39 DELTAIC ...... 101, 166 DEMAGNETIZATION...... 70, 76, 108 DENGYING FORMATION ...... 45, 46 DENSITY ...... 6, 12, 22, 31, 35, 51, 69, 78, 90, 104, 155, 161, 166, 169 DENSITY CURRENTS ...... 166 DEPLETED MANTLE ...... 7, 15, 27, 158 DEPOSITION ...... 5, 11, 21, 23, 28, 35, 41, 43, 49, 50, 61, 69, 71, 79, 83, 92, 96, 117, 120, 131, 140, 142, 152, 163, 166, 181 DEPOSITIONAL ENVIRONMENT ...... 11, 71, 83, 107, 118

226 DERONDA BAY ...... 63 DERONDA BAY ANDESITE FLOW ...... 63 DESBACH SANDSTONE ...... 78 DESIGN...... 1, 4, 126 DESULFURIZATION ...... 157 DETACHMENT FAULTS...... 27, 157 DETRITAL REMANENT MAGNETIZATION ...... 50, 76 DETROIT RIVER FORMATION ...... 68 DEUTERIC...... 113, 118, 154, 172 DEUTERIUM ...... 128 DEVELOPMENT ...... 9, 16, 20, 28, 44-46, 51, 64, 66, 74, 90, 96, 104, 112, 115, 127, 151, 154, 171, 174, 184 DEVIL TRACK...... 63, 65 DEVIL TRACK FELSITE ...... 63 DEVIL TRACK RHYOLITE ...... 65 DEVIL'S ISLAND...... 49 DEVIL'S TRACK RIVER...... 151 DEVILS ISLAND FORMATION ...... 11, 124, 129, 131, 167, 171 DEVOLATILIZATION ...... 36, 143, 144, 167 DEVON TOWNSHIP ...... 57, 58 DEVONIAN ...... 11, 15, 47, 68, 76, 78, 91, 98, 109, 111, 118, 170 DEWATERING...... 55 DIABASE ...... 8, 14, 17, 18, 23, 26, 27, 29, 33, 39, 43, 44, 51, 52, 54, 55, 57, 58, 60, 62-69, 72, 75, 81, 85, 88, 89, 91, 92, 94, 95, 98, 102, 103, 107, 113-115, 119, 121-124, 126, 132, 137, 139, 140, 148, 149, 151-153, 158, 161, 166, 175, 180, 183, 184, 188 DIABASE DIKES...... 66, 68, 75, 183 DIAGENESIS ...... 5, 11, 25, 49-51, 71, 77, 80, 108, 109, 121, 130, 139, 147, 154, 158, 166, 178, 182 DIAMONDS ...... 10, 25, 27, 75, 85, 98, 104, 111, 149, 163, 166, 176 DIATOMITE...... 159 DIATREME...... 12, 17, 25, 73, 85, 93, 98, 111, 112, 115, 148-150, 153, 161, 162 DICKINSON COUNTY ...... 30, 48, 68, 121, 134 DICKINSON GROUP...... 121 DIFFERENTIATION ...... 12, 17, 23, 31, 38, 39, 46, 64, 67, 87, 96, 98, 102, 103, 131, 138, 151, 154, 176 DIFFRACTION...... 138, 171 DIGENITE...... 25, 53, 73, 74, 77, 97, 108, 109, 145, 165, 175 DIKE ...... 12, 25, 29, 33, 40, 44, 52, 59, 63, 64, 66, 67, 72, 80, 86-90, 94-96, 106, 113, 124, 132, 137, 138, 141, 151, 152, 154, 162, 167, 175, 179, 183-185, 188 DIKE SWARMS...... 89, 124 DIKES...... 8, 12, 14, 18, 25, 27-30, 32, 33, 35, 36, 47, 52, 54, 55, 57, 58, 61-66, 68-70, 72, 75, 77, 80, 81, 85, 86, 88, 89, 91-93, 95, 98, 99, 101, 103-105, 107, 111, 113, 114, 118, 121, 123-125, 137, 138, 140, 141, 145, 148, 149, 152, 157, 158, 163, 166, 167, 175, 179, 180, 183-185, 188 DILUTION ...... 51 DIMENSION STONE...... 22, 73, 76, 122, 123, 129 DIORITE...... 18, 113, 114, 145 DIP...... 75, 95, 163, 181 DIRECT SMELTING ...... 157 DISCHARGE ...... 24 DISCONFORMITY ...... 81, 107 DISCOVERY ...... 9, 12, 25, 98, 113, 155, 160 DISPLACEMENTS...... 44, 139, 182 DISSEMINATED ORE...... 6, 13, 19, 20, 25, 29, 36, 53, 61, 71, 74, 97, 106, 110, 121, 124, 125, 129, 139, 156, 165, 176, 182 DISSOLUTION...... 49, 80, 96 DISTRIBUTION...... 4, 6, 12, 13, 17, 23, 26, 41, 45, 54, 82, 83, 85, 96, 99, 129, 144, 150, 155, 162, 163, 171, 188 DISTRICT OF ALGOMA...... 8-11, 14, 16-18, 20, 27-30, 36, 44, 48, 58, 59, 65, 66, 68-71, 77, 79, 82-84, 88, 93, 99, 104-106, 108, 118, 127-129, 131, 132, 134, 135, 137, 142, 145, 148-150, 155, 158, 162, 164, 166, 168, 170, 173, 184, 186 DISTRICT OF COCHRANE ...... 17, 148, 149, 167 DISTRICT OF KENORA...... 140, 148, 149 DISTRICT OF MANITOULIN...... 59 DISTRICT OF RAINY RIVER ...... 140 DISTRICT OF SUDBURY...... 29, 59, 75, 76, 86, 90, 125, 135, 146, 148, 173, 175 DISTRICT OF THUNDER BAY ...... 5, 9, 11, 12, 14-18, 21, 27-29, 34-41, 44, 48, 49, 52, 55-61, 64-66, 68-70, 72, 73, 75, 77, 79, 81-86, 90- 103, 105, 107, 109-111, 115, 116, 119, 123-125, 127, 130, 131, 135-141, 145, 148-151, 153-155, 157, 158, 161, 162, 164, 166-171, 175-180, 183-186, 188 DJURLEITE ...... 145 DOLOMITE...... 11, 60, 78, 91, 118, 122-124, 154, 164, 167, 184 DOLYE LAKE QUADRANGLE ...... 114 DOME MINE ...... 159 DOMESTIC...... 178 DOMEYKITE...... 8, 23, 55, 77, 161 DOMINO BED ...... 49, 71 DORION TOWNSHIP ...... 75 DOROTHEA TOWNSHIP...... 103

227 DOUGLAS COUNTY ...... 46, 62, 80, 82, 87, 161 DOUGLAS FAULT ...... 101, 181 DOVER CREEK ...... 11 DOWNHOLE ...... 21, 90, 155 DOYLE LAKE ...... 33, 114 DOYLE LAKE QUADRANGLE ...... 33 DRAG FOLDING...... 46, 104 DRAINAGE ...... 7 DRESBACH FORMATION...... 163 DRESBACH GROUP...... 154 DRESSER ...... 38, 89, 90, 98 DRESSER FLOWS...... 90 DRIFT ...... 6, 7, 10, 11, 16, 25-27, 43, 77, 78, 92, 106, 107, 118, 119, 122, 128, 143, 165, 178 DRIFT B ...... 143 DRIFT C ...... 143 DRILL CORE ...... 6, 21, 41, 51, 53, 56, 57, 61, 87, 90, 103, 105, 117, 118, 135, 147, 151, 166 DRILL HOLE ...... 6-9, 11, 13, 16, 20, 21, 26, 30, 31, 35, 40, 43, 51, 53, 56, 61, 62, 64, 66, 73, 75, 82, 87, 89, 90, 102, 103, 106, 108, 110, 111, 115, 117-119, 133-136, 138, 139, 141, 143, 147, 151, 153, 155-157, 164, 166, 167, 171, 172, 174, 181, 185, 186, 188 DRILL HOLE SURVEY...... 111, 136, 156, 166 DRILLING...... 9, 18, 33, 41, 45, 79, 82, 87, 137, 155, 172, 190 DRIPPING SPRING QUARTZITE ...... 83 DULUTH...... 1, 2, 5-15, 17-44, 47-49, 51-57, 59-74, 76-78, 80-107, 109-111, 113-148, 150-160, 162-176, 178-182, 184, 185, 187-190 DULUTH 2 DEGREE QUADRANGLE ...... 94 DULUTH COMPLEX...... 2, 5-15, 17-44, 47-49, 51-57, 59-70, 72-74, 76, 77, 80, 83-89, 91-107, 109-111, 113-122, 124-127, 129-148, 150- 153, 155-160, 162-165, 167-169, 171-176, 178-182, 184, 185, 187-189 DULUTH DIKE SWARM ...... 141 DULUTH HEIGHTS QUADRANGLE ...... 104, 141 DULUTH LAYERED SERIES...... 33, 60, 64, 83, 85, 101, 111, 113, 114, 119, 133, 136, 153, 167, 168, 185 DULUTH QUADRANGLE ...... 65, 104, 141 DUMONT SILL ...... 48 DUNBAR GNEISS DOME ...... 137 DUNCAN BASIN ...... 8 DUNKA BAY ...... 49 DUNKA PIT ...... 49, 74, 80, 81, 124, 156, 165, 181 DUNKA RAILROAD HORNFELS ...... 172 DUNKA RIVER ...... 18-20, 141 DUNKA ROAD ...... 8, 26, 48, 57, 74, 84, 100, 117, 122, 130, 134, 141, 142, 144, 156, 165, 169, 172, 181

(E)

EAGLE HARBOR QUADRANGLE ...... 39 EAGLE MOUNTAIN ...... 42, 43, 126 EAGLE MOUNTAIN QUADRANGLE ...... 43 EAGLE PEAK FLOWS ...... 90 EAGLE RIVER...... 182 EARLY MAFIC SERIES ...... 42, 43, 120, 163 EARTHQUAKES ...... 33, 73, 91, 173 EAST AFRICAN RIFT...... 97 EAST BRANCH ARKOSE...... 121 EAST CONTINENT RIFT BASIN...... 11, 47, 164 EAST PACIFIC RISE...... 163 EAST SAHARAN/CHAD CRATON ...... 65 EAST SAND BAY MEMBER ...... 8 EASTERN GABBRO ...... 102, 130, 150, 157, 176, 178 EASTVIEW CARBONATITE ...... 149 EAU CLAIRE FORMATION...... 11, 78, 171 EAU PLEINE SHEAR ZONE ...... 91 ECHO LAKE...... 175 ECHO LAKE GABBRO ...... 175 ECLOGITE ...... 111 ECLOGITIC DIAMONDS ...... 98 ECOLOGY ...... 5, 61, 74, 165 ECONOMIC ANALYSIS ...... 99 ECONOMIC EVALUATION ...... 96, 97 ECONOMIC FEASIBILITY ...... 9, 96 ECONOMIC GEOLOGY ...... 6-8, 10-15, 19, 21-34, 37-39, 43, 45, 46, 51, 55, 56, 58, 59, 61, 63, 66, 67, 69, 71-74, 76-80, 83, 84, 86-90, 92, 94-96, 98, 100, 101, 103, 105-110, 112, 113, 115, 117, 118, 120, 122, 123, 125, 126, 128-130, 132, 136, 137, 140- 144, 146, 148-150, 152-154, 159-161, 163, 165, 167, 171, 172, 175, 176, 178, 179, 181-183 ECONOMIC POTENTIAL ...... 98, 148

228 ECONOMICS ...... 51, 56, 74, 99, 110, 141, 171, 174 EDWARD ISLAND ...... 55, 167 EDWARD ISLAND MINE ...... 55 EGYPT...... 97 EILEEN RIVER ...... 178 ELECTRIC PULSE DISAGGREGATION ...... 146 ELECTRICAL CONDUCTIVITY ...... 189 ELECTRICAL PROPERTIES ...... 147, 189 ELECTROMAGNETICS ...... 90, 101, 123, 132, 139, 163, 176 ELECTRUM ...... 124, 125, 130, 150 ELIJÄRVI COMPLEX...... 104 ELLIOT LAKE GROUP ...... 55 ELLIOTT COUNTY ...... 111 ELSONIAN OROGENY...... 84 ELY...... 7, 19, 20, 59, 63, 92, 95, 99, 138, 153, 155, 159, 172 ELY GREENSTONE ...... 7, 59, 63, 95 ELY'S PEAK...... 65, 91, 127 ELY'S PEAK BASALT...... 65, 91 EMBARRAS RIVER ...... 48 EMERALD BASIN...... 7 EMERY...... 82 EMPLACEMENT...... 25, 46, 89, 114, 165, 176, 178 EMPRESSITE...... 124 ENCAMPMENT RIVER ...... 48, 139 ENCHANTMENT LAKE FORMATION ...... 27 ENDION SILL...... 51-53, 57, 59, 63, 65, 76, 86, 129, 151, 159, 167 ENGER HILL ...... 94, 155 ENGER TOWER...... 53, 60, 101, 155, 167 ENGLAND ...... 49, 82, 106, 151, 159 ENGLISH BAY ALKALI GRANITE ...... 166 ENGLISH BAY GRANITE ...... 44, 166 ENRICHED MANTLE...... 27 ENSIALIC...... 65 ENVIRONMENT ...... 5, 10, 11, 16, 21, 22, 34, 46, 50, 61, 69, 71, 77, 83, 84, 86, 88, 89, 107, 112, 118, 119, 122, 125, 130, 134, 135, 138, 141, 166, 174, 179 ENVIRONMENT OF DEPOSITION...... 69, 166 ENVIRONMENTAL...... 1, 5, 9, 10, 16, 17, 22, 24, 30, 34, 37, 41, 49, 59, 61, 77, 83, 85, 91, 96, 115, 120, 122, 125, 131, 132, 134, 136, 138, 141, 147, 151, 158, 164, 165, 174, 181 ENVIRONMENTAL GEOLOGY ...... 1, 9, 16, 165 ENVIRONMENTAL GEOLOGY MAPS ...... 9 ENVIRONMENTAL IMPACT ...... 9, 22, 115, 158 EOCAMBRIAN ...... 90 EOCENE...... 111, 170 EPICENTERS...... 33, 173 EPICLASTIC...... 176 EPIDOTE...... 21, 108, 181 EPIGENETIC ...... 20, 21, 23-25, 34, 129, 150, 181-183 EPITHERMAL ...... 124 EQUILIBRIA ...... 53, 101, 144 EQUILIBRIUM...... 18, 30, 31 EQUILIBRIUM CRYSTALLIZATION...... 30, 31 ERIE HORNFELS...... 172 ERIE MINING COMPANY...... 18, 19 EROSION ...... 28, 29, 47, 49, 75, 111, 123, 126, 127, 129, 183 ERYTHRITE...... 55, 124, 167 ESKER...... 25, 43, 105 ESKO QUADRANGLE ...... 35, 91, 104, 141 ESSEX COUNTY ...... 82 ETHANE ...... 133 EUROPE ...... 25, 27, 88, 92, 146, 159, 180, 181, 189 EVA TOWNSHIP...... 102 EVAPORITES...... 78 EVERGREEN SERIES...... 23 EVOLUTION ...... 6, 7, 15, 27, 28, 35, 40, 45, 47, 53, 55, 64-66, 71, 77, 80, 83, 84, 86, 92, 93, 95, 104, 109, 114, 121, 122, 128, 129, 132, 133, 142, 143, 150, 151, 158, 160, 165, 169, 174, 179, 180, 182, 184 EXHALATIVE ...... 7, 24 EXPANDING CLAY ...... 74 EXPERIMENTAL STUDIES...... 10, 24, 30, 31, 35, 49, 68, 72, 76, 80, 83, 112, 157

229 EXPLORATION...... 5, 7, 9, 10, 12, 18, 21, 23, 25, 26, 32, 35, 37, 41, 43-46, 56, 58, 61, 63, 66, 68, 74, 84, 85, 87, 90, 92, 94, 95, 97-101, 105, 108, 110-112, 115, 116, 120, 122, 126, 127, 131, 134, 136, 137, 139, 146-149, 153-155, 159-163, 165, 173-176, 181, 182, 187, 188, 190 EXPLORATION TECHNIQUES...... 26 EXTENSION...... 5, 14, 16, 40, 47, 55, 65, 74, 95, 122, 126, 136, 157, 189, 190 EXTENSIONAL TECTONICS ...... 15, 28, 35, 47, 54, 78, 81, 91 EXTRACTION ...... 88, 132 EYRE PENINSULA...... 15

(F)

FABRIC...... 11, 30 FACIES...... 9, 20, 23, 41, 65, 70-72, 75, 81, 83, 87, 91, 94, 98, 99, 101, 103, 104, 106, 108, 110, 111, 123, 152, 154, 161, 163, 172, 176, 181, 183 FAEROE ISLANDS ...... 180 FAILED ARM...... 29, 50, 52 FAILURE...... 73, 127, 186 FALL LAKE...... 7, 63 FALL RIVER TECTONIC ZONE...... 16 FANCY CREEK KIMBERLITE ...... 104 FARM LAKE ...... 63 FARNESANE ...... 49 FARQUHAR ...... 42, 184 FAULT...... 2, 5-7, 10-13, 16, 20, 21, 23, 24, 27-30, 33, 35, 39, 40, 45-48, 54, 56, 58, 63, 64, 69-72, 74, 75, 78, 79, 86-88, 91, 98-102, 104- 109, 111-114, 116, 118-120, 123, 127, 129-132, 139-142, 145, 146, 150, 152, 154, 156-161, 163, 164, 166, 168-170, 178, 180-183, 186-189 FAULT ARRAY ANALYSIS ...... 186 FAULTING...... 29, 54, 82, 114 FAULTS ...... 5, 6, 8, 10-13, 15, 16, 18, 20, 23, 24, 27-29, 31, 33, 36-39, 43-46, 53-56, 58, 62-64, 68, 70, 72-75, 77-82, 87, 89, 91-93, 95, 99, 102, 104, 105, 107-109, 111-114, 119, 120, 123-125, 129-132, 134, 139, 140, 142, 145, 148, 149, 151, 152, 154, 156-158, 160, 162-166, 168-170, 179-183, 186, 188, 189 FAYALITE ...... 18 FAYETTE COUNTY ...... 111 FEASIBILITY STUDY...... 109 FEDERAL EXPLORATION MINE...... 159 FELCH TROUGH ...... 137 FELDSPARS...... 88, 102, 140, 149, 189 FELSIC ...... 18, 26, 35, 37, 42-44, 51, 53, 62, 63, 66, 72, 79, 87, 98, 110, 118, 126, 127, 134, 140, 159, 165, 173, 174 FELSIC SERIES...... 26, 37, 42, 43, 51, 165, 174 FELSITE ...... 8, 34, 35, 52, 56, 63, 81, 94, 126, 173, 187 FENITE...... 148 FENITIZATION ...... 177 FERROANDESITE ...... 64 FERROAUGITE ...... 116 FERROGABBRO ...... 19, 57, 64, 114, 125, 174 FERROHYPERSTHENE ...... 18 FERROSILICON...... 76 FIBERS ...... 10 FIG TREE ...... 137 FILSON CREEK...... 53, 74, 94, 110, 155, 156 FILTERING ...... 5, 181 FINLAND ...... 49, 89, 104, 114, 130, 136, 137, 143, 150, 164 FINLAND QUADRANGLE ...... 114 FINLAND RADAR STATION GRANOPHYRE ...... 114 FINLAND TECTONO-MAGMATIC DISCONTINUITY ...... 114 FIRESAND RIVER CARBONATITE COMPLEX ...... 15, 59, 76, 148, 149, 166, 168 FISH COVE RHYOLITE ...... 20 FISH CREEK...... 170 FISH LAKE...... 35, 73, 135, 136, 151 FISKENAESSET ANORTHOSITE ...... 44 FISSION TRACK...... 21 FISSURE VEIN...... 23, 122, 124, 142, 153, 154 FLAMBEAU DEPOSIT ...... 123 FLAMBEAU QUARTZITE ...... 160 FLATHEAD COUNTY ...... 45 FLEXURE...... 129, 137, 161 FLINDERS RANGE ...... 65 FLOOD BASALTS ...... 8, 12-14, 16, 21, 27, 29, 30, 44, 47, 48, 52, 58, 63-65, 72, 100, 101, 106, 127, 129, 132, 133, 158, 162, 182, 183 FLORENCE COUNTY ...... 48

230 FLORENCE DISTRICT...... 105 FLORIDA ...... 189 FLOTATION...... 84, 85, 152 FLOW BRECCIA...... 65 FLOW LAMINATION...... 65 FLUID...... 10, 26, 35, 55, 61, 73, 86, 88, 90, 92, 101, 107, 109, 115, 117, 128, 135, 136, 142, 151, 152, 155, 158, 177, 181 FLUID IMMISCIBILITY...... 135 FLUID INCLUSIONS...... 10, 26, 35, 73, 86, 90, 92, 101, 107, 109, 128, 135, 136, 142, 151, 155, 158, 181 FLUID PHASE ...... 177 FLUIDS...... 10, 20, 23, 29, 74, 88, 92, 98, 100, 107, 108, 112, 117, 128, 130, 133, 135, 136, 142, 145, 150, 151, 154, 159, 161, 177, 181, 182 FLUORAPATITE...... 130 FLUORESCENCE ...... 26 FLUORIDE...... 169 FLUORINE...... 21, 37, 143 FLUORITE ...... 55, 84, 92, 124, 146, 167 FLUORSPAR ...... 22 FLUVIAL ...... 5, 21, 41, 46, 50, 86, 89, 101, 112, 125, 130, 131, 168 FLYNN LAKE WILDERNESS AREA ...... 27 FLYNN LAKE WILDERNESS STUDY AREA ...... 27, 28 FOLDING ...... 27, 40, 43, 46, 94, 104, 109, 140, 148, 157, 171 FOLDS...... 6, 8, 11, 39, 40, 46, 47, 63, 81, 104, 105, 109, 123, 142, 183, 188 FOND DU LAC FORMATION ...... 7, 39, 45, 67, 69, 74, 83, 86, 108, 110, 119, 120, 126, 131, 154, 161, 163, 164, 170, 171, 173, 178 FOOTWALL...... 5, 12, 19, 37, 57, 74, 103, 135, 136, 156, 178, 179 FOREST CENTER NW QUADRANGLE ...... 115, 125 FOREST CITY BASIN...... 7, 29, 56, 68, 113, 137 FOREST COUNTY ...... 106 FORMATION WATER ...... 90 FORT WILKINS QUADRANGLE ...... 39 FORT WILLIAM ...... 167 FOSSILS ...... 47, 80, 88, 109, 118, 184 FOX CREEK FAULT...... 140 FOX RIVER ...... 49 FRACTIONAL CRYSTALLIZATION ...... 12, 19, 22, 36, 48, 97, 113, 115, 126, 141, 143, 144, 155, 169 FRACTIONATION ...... 34, 35, 60, 80, 86, 93, 124, 127, 131, 136, 141, 157, 165 FRACTURES ...... 20, 25, 39, 42, 47, 55, 57, 67, 84, 87, 88, 107, 124, 125, 130, 137, 139, 149, 161, 183, 187, 189 FRAGMENTATION...... 186 FRANCE...... 92, 117, 150 FRANCONIA SANDSTONE ...... 16, 78, 154 FRANKLIN INTRUSION ...... 145 FRANKLIN JUNIOR MINE ...... 23, 187 FRANKLIN MINE ...... 23 FRANKLIN MOUNTAINS ...... 5 FRASER LAKE...... 62 FREDA ...... 8, 13, 16, 17, 21, 23, 28-30, 34, 41, 45, 46, 50, 53, 56, 58, 69, 71, 76, 77, 81, 82, 84, 85, 87, 96-98, 108, 109, 124, 126, 128, 131, 136, 139, 141, 142, 145, 154, 161, 163, 166, 170, 171, 173, 175, 182 FREDA SANDSTONE ...... 41, 76, 77, 139 FREEBORN COUNTY ...... 118 FREEZING TEMPERATURE ...... 155 FREIBERGITE ...... 109 FRENCH RIVER...... 48 FRIEDERICH 1-8...... 16 FROODITE ...... 57, 117, 146 FURNAS COUNTY ...... 159 FUXIAN KIMBERLITE...... 166

(G)

GABAMICHIGAMI LAKE ...... 126 GABBRO ...... 7, 9, 12, 14-16, 20-23, 30, 32, 35-37, 42, 46, 48, 49, 52, 57, 59-63, 66, 67, 69, 73, 74, 80, 81, 84, 85, 87, 88, 90, 93, 95-98, 102, 104, 113-115, 118, 124, 126, 129, 130, 132, 133, 135-138, 148, 150-153, 155-157, 159, 163, 165, 167, 168, 173- 180, 188, 189 GABBRO LAKE ...... 15, 32, 42, 62, 63, 66, 104, 135, 137, 138 GABBRO LAKE QUADRANGLE ...... 15, 42, 63, 66, 104, 135, 137, 138 GABEMICHIGAMI LAKE ...... 95 GABIMICHIGAMA LAKE ...... 95 GALAPAGOS ISLAND ...... 44 GALENA...... 11, 25, 51, 55, 57, 58, 61, 84, 91, 92, 103, 109, 117, 121, 124, 125, 128, 140, 145, 150, 154, 165, 167 GALENA FORMATION ...... 11, 84

231 GALESVILLE SANDSTONE ...... 11 GANGUE ...... 55, 77, 128 GARDEN LAKE...... 63 GARNET...... 68, 111, 176 GARNET RIDGE DIATREME ...... 111 GARNETS...... 10, 25, 111, 138, 166 GAS...... 6, 7, 11, 26, 43-47, 74, 77, 80, 97, 108, 109, 113, 123, 133, 134, 136, 137, 154, 173, 174 GAUTHIER TOWNSHIP ...... 25 GAWLER CRATON...... 15, 65 GECO MINE...... 140 GEM QUALITY ...... 98 GEMSTONES...... 80, 175 GENERAL...... 18, 63, 88, 115, 125, 154, 181, 186, 189 GENESIS...... 6-8, 10, 11, 14, 21-24, 26, 29, 30, 34, 35, 37-39, 46, 48-51, 54, 55, 59-61, 67, 71, 72, 74, 76, 77, 79-81, 83, 88-90, 92, 97, 98, 101, 103, 106, 107, 110, 119, 125, 126, 128-130, 133, 141-144, 147, 154, 157, 161, 175, 178-183, 188 GENTHITE...... 8 GEOCHEMICAL SURVEY...... 35, 101, 120 GEOCHEMISTRY ...... 1, 5-10, 12-17, 19-24, 26, 27, 29-31, 35-41, 44, 49-57, 59-68, 72, 74, 75, 77, 78, 80, 81, 83-88, 90, 93-95, 97-101, 104-118, 120-122, 124-128, 130-133, 135, 136, 138, 139, 141, 143-152, 154-163, 165-167, 172-177, 181, 183-188, 190 GEOCHRONOLOGY ...... 6, 12, 14-18, 20, 21, 28, 29, 34, 35, 40, 44, 48, 52, 53, 56, 59, 60, 70, 72, 73, 75, 78, 85, 86, 90, 98, 99, 101, 104, 111, 113, 114, 121, 130, 132-134, 137-140, 145-149, 159, 160, 166, 170, 171, 173, 174, 177, 188 GEOGRAPHY...... 17 GEOLOGIC...... 5, 7, 8, 10, 12-14, 16, 18-20, 23, 28, 30, 32, 38-40, 43-45, 47, 53-56, 59, 64-66, 71, 78, 79, 82, 89, 92, 111, 113, 114, 118- 123, 132, 133, 153, 159-161, 163, 164, 169, 170, 181-183, 187-189 GEOLOGY ...... 1, 2, 5-190 GEOMETRY...... 29, 46, 104 GEOMORPHOLOGY...... 11, 16-18, 37, 73, 131, 170, 172, 188 GEOPHYSICAL METHODS ...... 23 GEOPHYSICS..... 1, 5-10, 12-18, 20-38, 40, 42-48, 50-59, 61-63, 65, 66, 68-71, 73-87, 89-95, 97-102, 104-106, 108, 109, 111-114, 116, 118, 119, 121-124, 127-129, 131-134, 136, 137, 139, 141, 142, 145-147, 150-164, 166-178, 180-182, 186-190 GEORDIE LAKE DEPOSIT...... 60, 61 GEORDIE LAKE INTRUSION...... 61, 124, 125, 137, 176 GEORGIA...... 76, 189 GEORGIAN BAY...... 42, 51, 169 GEOSTATISTICS...... 57, 74, 134, 156, 157 GEOSYNCLINE...... 13, 65, 81, 84, 142, 165, 173 GEOTHERMAL ...... 22, 29, 66, 74, 77, 109, 139 GEOTHERMOMETRY ...... 13, 57, 109, 124, 139, 185 GEOTHERMS...... 29 GERALTON ...... 9 GERMANY...... 88, 92, 150, 181 GERSDORFFITE ...... 116, 117, 154 GHEEN NW QUADRANGLE ...... 104 GIANTS RANGE ...... 5, 19, 20, 37, 38, 58, 59, 63, 72, 85, 90, 94, 156, 159, 165, 169, 175 GIANTS RANGE BATHOLITH ...... 5, 20, 37, 38, 58, 85, 156, 159, 169, 175 GILLIS LAKE...... 42 GILSONITE...... 45 GLACIAL DRIFT...... 7, 10, 11, 16, 25, 26, 78, 118, 119, 122 GLACIAL GEOLOGY...... 11, 16, 21, 25, 35, 38, 40, 43, 46, 47, 59, 65, 69, 73, 76, 82, 91, 105, 111, 122, 131, 132, 139, 146, 163, 165, 172, 174, 188 GLACIAL LAKE AGASSIZ ...... 74 GLACIAL LAKE DULUTH...... 21, 111 GLACIAL LAKE DUNKA ...... 38 GLACIAL LAKE NORWOOD ...... 38 GLACIAL TILL ...... 96, 139, 188 GLACIATION...... 26, 38, 122 GLASS...... 76, 134, 145 GLAUCONITE...... 162 GLENNIE DOMAIN...... 98 GLENWOOD FORMATION ...... 11, 78, 154 GLIMPCE ...... 14, 15, 25-28, 31, 40, 42, 51, 58, 63, 65, 68, 73, 75, 78, 79, 82, 83, 85, 90, 91, 94, 97, 102, 104, 105, 109, 111-114, 119, 123, 124, 127, 146, 150, 151, 157, 158, 161, 168-171, 174, 181, 189 GNEISS...... 31, 54, 60, 75, 78, 79, 91, 120, 121, 137, 159, 188 GNEISS TERRANE ...... 121 GNEISSES...... 150 GNI/ARGONNE LINE 12 ...... 157 GNI/ARGONNE LINE 15 ...... 104 GNI/ARGONNE LINE 18 ...... 157 GNI/ARGONNE LINE 25 ...... 157

232 GNI/ARGONNE LINE 26 ...... 105 GNI/ARGONNE LINE 36 ...... 104, 105 GNI/ARGONNE LINE 43 ...... 157 GNI/ARGONNE LINE 45 ...... 157 GNI/ARGONNE LINE 47 ...... 157 GNI/ARGONNE LINE 53 ...... 157 GNI/ARGONNE LINE 57 ...... 157 GNI/ARGONNE LINE 8 ...... 157 GOETHITE...... 128 GOGEBIC COUNTY ...... 82, 137, 152, 161 GOGEBIC DISTRICT ...... 48, 134, 136, 152 GOGEBIC IRON RANGE ...... 6, 29, 37, 48, 105, 123, 131, 160 GOLD ...... 5, 7, 13, 16, 18, 19, 22, 36, 41, 48, 49, 56, 57, 59-61, 68, 73, 74, 77, 82, 94, 103, 105, 108, 117, 121-125, 136, 144, 146, 148- 150, 152, 154, 157, 160, 161, 165, 175, 179, 184 GOLD ISLAND GRANITE ...... 59 GOLD RANGE DIATREME ...... 73, 148, 149 GOLDRAY CARBONATITE COMPLEX ...... 59, 149 GOOD HARBOR ...... 63, 65 GOOD HARBOR BAY ANDESITE ...... 63, 65 GOODHUE COUNTY ...... 118, 163 GOODMAN SWELL ...... 129, 137 GOODRICH QUARTZITE ...... 154 GOOSEBERRY BROOK ...... 149 GOOSEBERRY FALLS ...... 65 GOOSEBERRY FALLS STATE PARK ...... 65 GOOSEBERRY RIVER ...... 48, 64, 65 GOOSEBERRY RIVER BASALTS ...... 64 GOSSANS...... 138 GOULAIS RIVER ...... 58 GOULAIS RIVER REGION ...... 59 GOVERNMENT PEAK QUADRANGLE ...... 141 GRABENS...... 5, 28, 29, 68, 78, 79, 93, 95, 102, 104, 114, 119, 124, 132, 158, 166, 169 GRADE...... 9, 25, 48, 51, 72, 109, 146, 152, 165, 170, 171 GRADE CONTROL...... 51, 170, 171 GRADED BEDDING...... 55 GRAIN SIZE...... 53, 171 GRAND CANYON ...... 46 GRAND ISLAND ...... 79 GRAND MARAIS ...... 63 GRAND MARAIS RHYOLITE FLOW ...... 63 GRAND PORTAGE ...... 52, 62-66, 91, 107, 126, 127, 164, 188 GRAND PORTAGE BASALTS ...... 63 GRAND PORTAGE DIKES ...... 52, 64-66, 188 GRAND PORTAGE ISLAND ...... 62, 107, 126 GRAND PORTAGE LAVAS ...... 65, 91 GRAND PORTAGE STATE PARK ...... 65 GRAND TRAVERSE BAY ...... 132 GRANDVIEW ...... 6, 86, 96 GRANITE ...... 5, 17, 19, 20, 33, 34, 37, 38, 44, 56, 58-60, 62, 63, 67, 69, 72, 73, 75, 89-91, 93-95, 104, 111, 113, 121, 126, 129, 138, 151, 152, 156, 159, 160, 165, 166, 169, 174, 175, 189 GRANITE COMPLEX...... 91 GRANITE FALLS QUADRANGLE ...... 104 GRANITE GNEISS...... 91 GRANITES...... 51, 103 GRANITE-GREENSTONE TERRANE...... 33, 160 GRANITOID...... 63, 160 GRANO FAULT ...... 156, 157, 189 GRANOPHYRE ...... 8, 12, 19, 33, 42, 43, 51, 67, 75, 85, 98, 104, 114, 124, 126, 138, 145, 159, 167, 174, 189 GRANT-NORPAC ...... 36, 79, 104, 105, 114, 157, 168 GRANULOMETRY ...... 119 GRAPHITE...... 19, 56, 80, 103, 117, 123, 135, 147, 156, 165, 167, 188 GRATIOT COUNTY ...... 22 GRATIOT LAKE RHYOLITE ...... 145 GRATIOT MINE...... 154 GRATIOT MOUNTAIN RHYOLITE ...... 145 GRAVEL POINT FORMATION...... 184 GRAVITY...... 5-7, 9, 10, 12, 13, 15-18, 21, 22, 25, 27-29, 31-38, 40, 42, 45, 48, 51, 53, 58, 59, 68, 70, 73, 75, 78-80, 83, 84, 87, 90-95, 97- 99, 102, 104, 105, 109, 112, 116, 118, 119, 121, 123, 129, 132, 141, 142, 152, 153, 155, 157, 159-161, 163, 164, 166- 170, 174-176, 178, 180-182, 186-190 GRAVITY ANOMALIES ...... 7, 93, 109, 169

233 GRAVITY ANOMALY ...... 17, 32, 34, 87, 92, 99, 169, 186, 187, 189 GRAVITY SETTLING ...... 12, 180 GRAY ...... 44, 92 GRAYWACKE...... 58, 62 GREAT BEAR LAKE...... 92 GREAT BRITAIN...... 17, 159 GREAT DYKE ...... 21, 65, 125 GREAT LAKES ...... 9, 27, 29, 32, 33, 36, 46, 48, 49, 58, 62, 63, 66, 81, 103, 112, 150, 154, 160, 161, 173, 184 GREAT LAKES NICKEL ...... 29, 36, 48, 49, 103, 161 GREAT LAKES TECTONIC ZONE...... 32, 33, 58, 150, 161 GREAT SAND BAY ...... 112 GREEN KNOBS KIMBERLITE ...... 111 GREEN MOUNTAIN KIMBERLITE ...... 111 GREEN PROSPECT...... 122 GREENLAND...... 21, 44, 76, 80, 94, 100, 104, 116, 159, 173, 180, 183 GREENOCKITE...... 51, 182 GREENSTONE AMYGDALOID ...... 38 GREENSTONE BELTS ...... 5, 7, 13-15, 25, 29, 32-38, 48, 54, 59, 62, 63, 67, 68, 72, 74, 83, 85, 86, 91, 94, 95, 103, 105, 111, 114, 119- 121, 123, 125, 126, 129, 131, 132, 140, 146, 153, 159, 161, 165, 173, 185 GREENSTONE FLOW...... 21, 23, 38, 39, 65, 96, 101, 133, 135, 151, 182 GREENSTONE TERRANE...... 33, 121, 160 GREENSTONES...... 68 GREENWOOD LAKE ...... 19, 33, 137, 138, 174 GREENWOOD LAKE EAST QUADRANGLE ...... 33 GREENWOOD LAKE QUADRANGLE ...... 137 GREENWOOD LAKE WEST QUADRANGLE ...... 33 GREGORY RIFT ...... 46, 123 GRENVILLE...... 17, 26-28, 33, 35, 40, 42, 47, 51, 52, 54, 61-63, 65, 70, 75, 77-80, 84, 104, 111, 113, 119, 128, 150, 158, 161, 164, 173, 178, 185 GRENVILLE FORELAND THRUST BELT ...... 75 GRENVILLE FRONT ...... 26, 47, 51, 75, 111, 161, 164 GRENVILLE FRONT TECTONIC ZONE ...... 26, 51, 75, 111, 161, 164 GRENVILLE OROGENY ...... 28, 35, 42, 47, 54, 61, 70, 75, 78, 80, 84, 104, 128, 161, 173, 185 GRENVILLE PROVINCE ...... 17, 27, 40, 42, 52, 54 GRINDING...... 37 GRINDSTONE POINT...... 104 GRINDSTONE RIVER...... 171 GRINNELL FORMATION ...... 37 GRIT ...... 8 GROUND MAGNETIC SURVEY ...... 6, 46, 104, 141, 176 GROUND MAGNETOMETER SURVEY ...... 85, 98, 163 GROUND SPECTROMETRY ...... 5, 74 GROUNDWATER ...... 16, 40, 48, 52, 69, 72, 73, 90, 100, 120, 128, 139, 142, 164, 165, 167, 169, 173 GUANGLINITE ...... 61, 124, 125, 150 GUATEMALA ...... 76, 189 GUIANA...... 189 GUIDEBOOK...... 7, 10, 11, 20, 21, 27, 30, 38, 40, 45, 55, 58, 60, 63-65, 67, 79, 86, 89, 91, 93, 94, 98, 99, 107, 111, 113-116, 119, 125, 129, 132, 138, 140, 141, 146, 149, 150, 152, 163, 168, 170, 175, 176, 178-182, 187 GULF OF ADEN...... 61 GUNFLINT ...... 29, 32, 36, 37, 47, 55, 59, 62, 67, 68, 95, 111, 114, 116, 119, 120, 124, 126, 149, 158, 159, 166, 180, 185 GUNFLINT FORMATION ...... 29, 32, 55, 114, 158, 166 GUNFLINT IRON-FORMATION ...... 36, 37, 47, 55, 59, 62, 95, 111, 119, 120, 126, 149, 159, 166, 180 GUNFLINT LAKE ...... 62, 114, 119, 120, 126 GUNFLINT LAKE QUADRANGLE ...... 120, 126 GUNFLINT TRAIL ...... 47, 95, 180

(H)

HADRYNIAN ...... 56, 146, 178 HALLS CREEK INLIER ...... 65 HANCOCK ...... 21, 23, 26, 39, 40, 57, 96, 147, 182 HANCOCK 2 DEGREE QUADRANGLE ...... 57 HANCOCK CONGLOMERATE ...... 182 HANCOCK FAULT ...... 23 HANCOCK MINE ...... 21, 23, 147 HANCOCK QUADRANGLE ...... 39, 57 HARRIS LAKE...... 54 HARTLEY OPHITIC BASALT ...... 65 HAVILLAND FAULT ...... 20, 104

234 HAWAII ...... 44, 76, 145 HAWAIITES...... 64 HAWKINS FAULT...... 91, 123 HEAT FLOW ...... 17, 22, 73, 86, 146, 164 HEAVY METALS ...... 122 HEAVY MINERALS ...... 6, 16, 71, 86, 119, 122, 171 HEAZLEWOODITE ...... 117 HEBEI KIMBERLITE ...... 166 HEBEI PROVINCE...... 45 HECLA CONGLOMERATE ...... 23, 39, 89, 178, 181, 182 HECLA-KILMER ALKALIC COMPLEX ...... 15, 59, 149 HEMATITE...... 25, 35, 38, 48, 50, 53, 56, 71, 72, 77, 99, 105, 128, 141, 145, 173, 175, 182, 185 HEMATITIZATION...... 25 HEMLOCK...... 65 HENNEPIN COUNTY ...... 163 HERCYNITE...... 53, 117, 143, 151, 157 HERMAN LAKE ALKALIC COMPLEX...... 149 HERON BAY ...... 36, 170 HESSITE...... 61, 117, 124, 125, 150 HIBBING 2 DEGREE QUADRANGLE ...... 83 HIBBINGITE ...... 150 HIGH ANGLE FAULTS...... 95 HINCKLEY...... 7, 10, 11, 39, 40, 45, 67, 69, 100, 118-120, 131, 154, 159, 163, 164, 169, 171, 185 HINCKLEY SANDSTONE ...... 10, 40, 171 HIPEL TOWNSHIP ...... 103 HISTORY ...... 6, 8, 14, 16-18, 25, 33, 47-49, 51, 56, 62, 66, 69, 73, 79-82, 84, 89, 92, 95, 96, 98, 109, 113, 118, 120, 122, 123, 126, 132, 138-140, 147, 160-162, 170, 172, 173, 175, 179, 182, 184, 185 HOLLANDALE ...... 11 HOLLINGWORTHITE...... 130, 150 HOLOCENE ...... 18, 61, 162, 181 HOMOGENIZATION TEMPERATURE ...... 92, 109, 135 HOPANES...... 77, 78 HORNBLENDE ...... 18, 59, 61, 65, 72, 90 HORNBLENDE HORNFELS FACIES...... 65 HORNFELS...... 6, 18, 19, 21, 31, 33, 42, 48, 59, 64, 65, 68, 91, 95, 103, 106, 120, 143, 147, 156, 171, 172, 176 HORSTS ...... 5, 13, 27, 29, 39, 43, 45, 46, 68, 70, 87, 95, 119, 123, 132, 155, 163, 169, 174, 175, 188 HORTON FORMATION ...... 37 HOST ROCKS...... 25, 40, 55, 111 HOT FILM FLOW LOGGING ...... 31 HOT PLUME...... 27 HOTSPOT...... 7, 27, 78, 83, 100 HOUGH LAKE GROUP ...... 55 HOUGHTALING CREEK TROCTOLITE ...... 114 HOUGHTON ...... 5, 7, 11-16, 18, 21-28, 32, 34, 38-41, 44, 47, 49, 51, 53, 55, 56, 58, 64-66, 68, 69, 73, 74, 76, 80, 81, 83, 85, 87-89, 91, 94, 96, 98, 99, 101, 103, 106, 108, 111, 113, 115, 118, 124, 132-137, 139, 140, 142, 145-147, 152-154, 158, 162, 163, 170, 171, 173, 175, 177-179, 181-183, 187, 188, 190 HOUGHTON CONGLOMERATE ...... 23, 39 HOUGHTON COUNTY ...... 12, 15, 16, 24, 27, 74, 85, 135, 163, 175, 181 HOVLAND ...... 44, 63, 65, 88 HOVLAND DIABASE COMPLEX ...... 63 HOVLAND LAVAS ...... 44, 63, 65 HOWELL ANTICLINE ...... 79 HOYT LAKES ...... 19, 20, 37, 120, 121, 171, 172 HUANREN KIMBERLITE ...... 166 HUAYACOCOTLA BASIN ...... 108 HUDSON BAY LOWLANDS ...... 85 HUDSONIAN OROGENY ...... 84 HUDSON-AFTON ANTICLINE ...... 120 HUDSON-AFTON HORST ...... 13, 120, 174, 175, 190 HUMBOLDT FAULT ZONE...... 16 HUNGARIAN FALLS ...... 11 HUNGARY JACK LAKE ...... 106, 126 HUNGARY JACK LAKE QUADRANGLE ...... 106, 126 HURON BAY PARAUTOCHTHON...... 150 HURON COUNTY ...... 76 HURON MOUNTAINS ...... 184 HURONIAN ...... 29, 53, 55, 62, 63, 65, 75, 91, 134, 173 HURONIAN SUPERGROUP...... 75, 173 HYDROCARBONS ...... 7, 13, 15, 26, 29, 37, 43-46, 49, 71, 74, 77, 78, 80, 83, 84, 90, 97, 107-111, 123, 128, 133, 134, 137, 139, 174, 183 HYDROCHEMISTRY ...... 72

235 HYDROFRACTURING ...... 68 HYDROGEN ...... 10, 26, 90, 92, 97, 101, 128, 144, 167 HYDROGEN ISOTOPES ...... 10, 26, 90, 92, 97, 101, 128, 144, 167 HYDROGEOLOGY ...... 52, 100, 139, 164, 165, 181 HYDROLOGY ...... 24, 40, 69, 72, 73, 96, 102, 151, 158, 159, 164, 169, 182 HYDROMETALLURGY ...... 138, 174 HYDROTHERMAL ...... 7, 8, 10, 13, 20-23, 26, 29, 39, 61, 74, 80, 82, 83, 86, 91, 92, 97-99, 113, 117, 122, 124, 128-130, 136, 142, 144, 145, 150, 151, 154, 156, 159, 163, 167, 178, 182, 187 HYDROUS SILICATES ...... 136, 150 HYDROXIDE ...... 150 HYDROXYAPOPHYLLITE ...... 31 HYPABYSSAL...... 18, 86, 111 HYPABYSSAL FACIES ...... 111

(I)

IAPETUS...... 65 ICARUS...... 59, 72 ICARUS PLUTON ...... 59 ICELAND ...... 44, 180 ICELANDITE ...... 64, 65 ICON...... 37 IDAHO ...... 21, 65, 76, 121 IDINGSITE...... 181 IGCP ...... 1, 89, 112 IGNEOUS ...... 5, 6, 12, 14-17, 22-26, 28-31, 34-36, 38, 39, 41, 45, 48, 51, 55, 57, 60, 62, 64, 66, 67, 75, 76, 81, 82, 85, 86, 90, 91, 93, 94, 96, 98, 101-103, 107-109, 113-116, 120, 126, 127, 130-133, 135-138, 140, 144-147, 151, 154-157, 159-161, 163, 165- 167, 169, 173-175, 178-180, 187, 189 IGNEOUS ACTIVITY ...... 159 IGNEOUS INTRUSIONS...... 15, 24, 51, 167 IGNEOUS LAYERING ...... 36, 41, 103, 116, 145 IGNEOUS PROCESS...... 30, 31, 38, 57, 67, 86, 94, 96, 113, 114, 133, 138, 165, 179, 180 IGNEOUS ROCKS...... 6, 14, 25, 26, 55, 64, 67, 85, 108, 135, 137, 140, 144, 147, 151, 155, 166, 179, 189 IGNIMBRITES...... 65 IJOLITE...... 116 ILE PARISIENNE...... 59 ILGEN CITY...... 113, 114 ILGEN CITY QUADRANGLE ...... 113, 114 ILLINOIS...... 5, 17, 22, 29, 35, 56, 59, 73, 75, 81, 90, 93, 95, 102, 109, 111, 126, 129, 136, 140, 145, 154, 160, 161, 170, 171, 174, 187, 188 ILLINOIS BASIN...... 90 ILLINOIS KENTUCKY FLUORSPAR DISTRICT ...... 22 ILLITE...... 5, 92, 109, 139 ILMENITE...... 6, 10, 21, 38, 41, 48, 51, 53, 57, 59, 69, 73, 74, 89, 97, 100, 103, 106, 108, 113, 115, 117, 121, 122, 124-126, 130, 135, 143, 145, 151, 153, 155, 156, 165, 175, 176, 189 IMMISCIBILITY ...... 126, 135, 136, 143, 167 IMMISCIBLE LIQUID...... 36, 145 IMMISCIBLE SULFIDE ...... 35, 36, 48, 97, 103, 125, 143, 180 IMMISCIBLE SULFIDE LIQUID...... 36, 97, 103 IMMISCIBLE SULFIDE MELT ...... 48, 125, 180 IMPACT ...... 9, 16, 22, 70, 109, 111, 115, 158, 188 IMPACTS ...... 111, 171 INCLINATION...... 77, 178 INCLUSIONS...... 10, 19, 21, 26, 35, 67, 73, 86, 90, 92, 101, 103, 107, 109, 114, 121, 128, 135, 136, 142, 145, 151, 155, 158, 165, 166, 181 INCO...... 34, 38, 69, 84, 97, 117, 155, 165, 181 INDIA ...... 44, 100, 189 INDIANA ...... 5, 6, 8, 17, 26, 53, 55, 75, 77, 97, 100, 105, 106, 111, 141, 147, 158, 164, 167, 174, 187, 189 INDIANA COUNTY ...... 111 INDONESIA ...... 189 INDUCED POLARIZATION ...... 12, 139, 155 INDUSTRIAL MINERALS ...... 22, 73, 74, 76, 91, 118, 122, 123, 129, 176 INSIZWA COMPLEX ...... 13, 48, 100 INTERCUMULUS ...... 31, 36 INTERFLOW SEDIMENTS...... 6, 8, 29, 37, 39, 52, 58, 59, 62, 64, 65, 67, 71, 86, 87, 98, 110, 113, 131, 158, 173, 182, 185 INTERPOLATED MINE ...... 23 INTERPRETATION...... 5, 7, 8, 11, 12, 16, 17, 21, 29, 30, 32, 33, 38, 43, 45, 53, 70, 75, 82, 86, 88, 92, 101, 105, 125, 132, 135, 139, 150, 157, 161, 163, 164, 168, 169, 173, 187, 188 INTRUSION ...... 5-26, 28-38, 40-44, 47-49, 51-70, 72-77, 79-81, 83-107, 109-111, 113-127, 129-153, 155-181, 183-185, 187-190

236 INTRUSIONS...... 9, 14, 15, 21, 24, 26, 31, 34-36, 40, 42, 43, 46, 51, 66, 72, 75, 85, 86, 90, 98, 114, 118, 122, 124, 131, 133, 139, 148, 155, 156, 160, 167, 179-181, 184, 187 INTRUSIVE ...... 14, 34-36, 40, 44, 61, 63, 86, 88, 90, 100, 103, 104, 109, 118, 123, 151, 161, 163, 167, 179, 180, 187 INVERTEBRATA...... 184 INVERTEBRATE...... 184 ION MICROPROBE...... 144 ION PROBE ...... 144 IOWA...... 4, 6-8, 17, 30, 33-37, 45, 56, 60, 70, 87, 91, 94, 97, 102, 108, 110, 111, 113, 128, 129, 132-134, 137, 138, 145, 152-155, 159, 160, 173, 174, 186-190 IOWA HORST ...... 6, 8 IOWA PLUTONIC COMPLEX...... 188 IRASITE ...... 150 IRELAND ...... 65 IRKUTSK ...... 45 IRKUTSK PETROLEUM PROVINCE...... 45 IRON...... 6, 11-13, 15, 18-23, 27-29, 32, 33, 35-37, 40, 45, 47, 48, 55-57, 59, 60, 62-64, 66-68, 72-75, 82, 84, 85, 90, 91, 95, 98, 100, 104, 105, 109-111, 114-117, 119-126, 128, 131, 132, 134-137, 139, 143, 145, 146, 148-150, 152-154, 156, 157, 159-162, 165-167, 169, 170, 173, 175, 176, 180, 183, 185, 188, 189 IRON COUNTY ...... 104 IRON ENRICHMENT ...... 64 IRON HILL MEMBER...... 11 IRON ISLAND ALKALIC COMPLEX ...... 149 IRON MOUNTAIN ...... 6 IRON ORE...... 6, 22, 23, 27, 35, 48, 56, 67, 73, 82, 84, 90, 100, 105, 123, 124, 132, 134, 160, 162, 173, 175, 185 IRON OXIDES ...... 35 IRON RIVER...... 57, 91, 109, 139, 169, 183 IRON RIVER 2 DEGREE QUADRANGLE ...... 57, 91 IRON RIVER SILVER DISTRICT ...... 183 IRON RIVER SYNCLINE...... 109, 139, 169 IRONTON SANDSTONE ...... 11 IRONWOOD...... 75, 81, 82, 105, 122, 123, 137, 167, 170 IRONWOOD FORMATION ...... 123 IRONWOOD IRON FORMATION ...... 105, 122, 167 IRONWOOD QUADRANGLE ...... 82, 137 IRON-FORMATION ...... 6, 13, 18-21, 27, 28, 32, 33, 35-37, 40, 47, 48, 55, 56, 59, 60, 62, 63, 66-68, 72, 73, 75, 82, 84, 85, 90, 95, 98, 105, 111, 114, 116, 117, 119-126, 128, 132, 134, 136, 137, 146, 149, 152-154, 156, 159-162, 165, 166, 173, 175, 176, 180, 185, 188, 189 IROQUOIS AMYGDALOID ...... 39 IROQUOIS LODE ...... 23 IROQUOIS MINE ...... 39 IRVING SYNCLINE...... 104 IRWIN TOWNSHIP...... 103 ISAAC LAKE QUADRANGLE ...... 19 ISABELLA QUADRANGLE ...... 33 ISABELLA STATION QUADRANGLE ...... 33 ISANTI COUNTY ...... 99, 118, 157 ISLAND ARC ...... 66, 80 ISLAND BELT ...... 86 ISLAND VIEW QUADRANGLE ...... 104 ISLE ROYALE ...... 7, 18, 23, 28, 35, 39, 41, 45, 65, 69-71, 79, 81, 82, 86, 95, 96, 101, 102, 104, 105, 114, 123, 127, 131, 140, 146, 157, 158, 162, 168, 169, 181, 185-187, 190 ISLE ROYALE AMYGDALOID ...... 23, 39 ISLE ROYALE FAULT...... 7, 28, 35, 45, 70, 71, 79, 86, 102, 104, 105, 114, 123, 127, 146, 157, 158, 168, 169, 186 ISLE ROYALE LODE ...... 23, 187 ISLE ROYALE MINE ...... 23, 162, 181 ISLE ROYALE NATIONAL PARK ...... 82, 96 ISLE ST. IGNACE ...... 186 ISOCHEMICAL ...... 95 ISOCLINAL FOLDS...... 104 ISOMERS ...... 78 ISOMERTIERITE...... 124, 130 ISOPACH ...... 163, 170 ISOPRENOID HYDROCARBONS ...... 13, 49 ISOPRENOIDS...... 15, 77 ISOTOPE FRACTIONATION ...... 136 ISOTOPES...... 1, 5, 6, 10, 13-15, 26, 27, 30, 34, 35, 44, 47, 51-53, 55, 57, 61, 62, 72, 75, 77, 78, 83, 86, 89, 90, 92, 94, 97, 99-104, 107, 109, 111, 112, 117, 118, 122, 124, 127, 128, 130, 133, 136, 142-145, 147, 152, 155, 156, 158, 159, 167, 168, 170, 173, 174, 181, 183, 187, 189 ITALY...... 92, 159 ITASCA COUNTY ...... 104, 129

237 IVANHOE LAKE FAULT ...... 104 IVANPAH OROGENY ...... 174

(J)

JACKFISH...... 176 JACKSON COUNTY ...... 105 JACOBSVILLE BASIN ...... 51 JACOBSVILLE SANDSTONE ...... 5, 11, 12, 21, 30, 44, 51, 56, 75, 89, 142, 146, 158, 162, 183, 188 JAMES BAY LOWLANDS ...... 25 JAMES RIVER...... 48 JAPAN...... 44, 189 JARDUN MINES ...... 91 JARVIS ISLAND MINE ...... 161 JASPER...... 7, 48 JASPER LAKE...... 7 JAY COOKE STATE PARK ...... 65, 86 JEWELL BASIN ...... 8 JIAOLIAO-LUXI UPLIFT...... 166 JILIN PROVINCE...... 166 JIMBERLANA ...... 21 JOGRAN PORPHYRY DEPOSIT...... 10, 166 JOHNSON SEALINK SUBMERSIBLE ...... 104 JOINTS ...... 65, 88, 98, 113, 125, 139 JORDAN SANDSTONE ...... 11, 154, 163, 164 JUDGE MAGNEY STATE PARK ...... 65 JUMP RIVER FAULT ...... 91, 123 JURASSIC...... 25, 48, 64, 76, 78, 90, 108, 111, 149

(K)

KAAPVAAL CRATON ...... 65 KABETOGAMA QUADRANGLE ...... 104 KAIROVO FORMATION ...... 45 KALAHARI CRATON ...... 65 KALLANDER CREEK VOLCANICS ...... 28 KALTASA FORMATION ...... 45 KAMA HILL FORMATION ...... 36 KAMBALDA ...... 125 KAMOTO MINE...... 25 KANABEC COUNTY ...... 31, 69, 118, 120, 151, 164 KANDIYOHI COUNTY ...... 58 KANGAROO ISLAND ...... 15 KANGERDLUGSSUAQ INTRUSION ...... 180 KANSAS ...... 5, 7, 10, 16, 17, 25, 34, 37, 44, 45, 56, 68, 70, 78, 79, 81, 91, 97, 99, 102, 104, 111, 112, 133, 137, 154-156, 159, 160, 163, 170, 173, 174, 186-189 KANSAS CITY GROUP ...... 7 KANSAS LINE ...... 186 KAO KIMBERLITE ...... 135 KAOLIN ...... 74, 84 KAOLINITE ...... 22 KAPUSKASING STRUCTURAL ZONE ...... 15, 33, 59, 70, 88, 99, 102, 148-150, 158, 166, 168, 177 KAROO...... 27, 30, 44, 48, 64, 100 KATANGAN EMBAYMENT ...... 25 KAWISHIWI LAKE...... 42 KAWISHIWI LAKE QUADRANGLE ...... 42 KAWISHIWI RIVER ...... 63, 66, 109 KEARSARGE AMYGDALOID ...... 21, 23, 39, 178, 187 KEARSARGE CONGLOMERATE ...... 21, 23, 38 KEARSARGE FAULT...... 23 KEARSARGE FLOW...... 21, 23, 39, 133, 151 KEARSARGE LODE...... 23, 187 KEEWEENAW PENINSULA ...... 5 KEKEQUABIC ...... 62, 95 KEKEQUABIC GRANITE ...... 62, 95 KEKEQUABIC LAKE ...... 62, 95 KELSO MOUNTAIN ...... 42 KELSO MOUNTAIN QUADRANGLE ...... 42

238 KENORA-KABETOGAMA DIKE SWARM ...... 33 KENTUCKY...... 5, 11, 17, 22, 75, 78, 111, 154, 158, 164, 174, 189 KENWOOD AVENUE PORPHYRITIC BASALTS ...... 65 KENYA...... 112, 123 KENYA RIFT ...... 112 KEROGEN ...... 77, 137, 170 KETILIDIAN OROGEN...... 80 KETTLE RIVER ...... 31, 66, 69, 168 KEWEENAW ...... 2, 5, 9-12, 14, 15, 20-26, 28-31, 33-35, 37-41, 44, 45, 47, 48, 50, 56, 64-66, 68-71, 73, 75, 76, 78-84, 86-92, 95-97, 99, 101, 103-106, 108, 109, 112, 114, 118, 123, 126-128, 131-134, 137, 139, 140, 142, 145, 146, 150, 152, 154, 157, 159- 164, 168, 169, 175, 177, 178, 181-188, 190 KEWEENAW BAY ...... 75, 188 KEWEENAW COUNTY ...... 2, 11, 20-23, 25, 28, 34, 37-39, 41, 44, 47, 50, 68-70, 76, 81, 82, 84, 87, 88, 95, 96, 99, 101, 106, 108, 118, 128, 133, 134, 137, 139, 140, 145, 146, 152, 154, 162, 163, 177, 178, 181-183, 186-188 KEWEENAW FAULT ...... 2, 11, 12, 20, 21, 23, 24, 28-30, 35, 45, 47, 48, 70, 75, 78, 86, 88, 91, 105, 108, 109, 112, 114, 127, 131, 139, 142, 145, 150, 157, 163, 168, 169, 187, 188 KEWEENAW PENINSULA ...... 2, 5, 9-12, 14, 15, 20-26, 28, 29, 33, 39, 41, 44, 47, 56, 65, 66, 68, 70, 71, 73, 76, 78-81, 84, 86, 87, 90, 92, 97, 101, 103, 104, 109, 112, 114, 123, 126-128, 131-134, 137, 139, 142, 145, 146, 154, 159-162, 164, 169, 175, 177, 178, 181-184, 186-188 KEWEENAW POINT...... 31, 81, 84, 128, 162, 181, 185 KEWEENAWAN ...... 2, 6-11, 14, 16, 18-23, 26, 28, 29, 31, 32, 34, 35, 37-40, 45-55, 57-59, 61-66, 68-72, 74, 76-82, 85-87, 89-94, 96-102, 104, 106-109, 111-114, 116, 119-123, 125-128, 130, 131, 134, 136-142, 145-147, 151-156, 158, 159, 161, 162, 164, 166-169, 173-176, 178-187, 190 KEWEENAWAN BASIN...... 51, 182, 190 KEWEENAWAN FAULT ...... 6, 35 KEWEENAWAN SERIES...... 29, 38, 39, 82, 96, 155, 173 KEWEENAWAN SUPERGROUP...... 8, 28, 74, 100, 130, 131 KEYSTONE MINE...... 55, 158 KEYSTONE TOWNSHIP ...... 46 KIBARAN BELT ...... 65 KIGLAPAIT ...... 21 KILLALA LAKE ALKALIC COMPLEX...... 14, 15, 35, 36, 72, 95, 148-150, 166, 177 KIMBALL CREEK...... 63, 65 KIMBALL CREEK FELSITE ...... 63 KIMBALL CREEK RHYOLITE ...... 65 KIMBERLITE MINE ...... 111 KIMBERLITES...... 10, 16, 25, 27, 75, 85, 98, 104, 111, 149, 163, 166 KIMBERLITIC INDICATOR MINERALS...... 10, 25, 166, 176 KINCAID TOWNSHIP...... 58 KINETICS...... 49, 80, 96, 167 KING PHILIP MINE...... 187 KINGFISHER RIVER ...... 149 KINGSTON CONGLOMERATE ...... 5, 25, 37, 178, 182 KINGSTON MINE...... 5, 21, 25 KINK BANDS ...... 35 KINK FOLDS...... 63 KINNICKINNICK RIVER FAULTS...... 163 KIRKLAND LAKE ...... 25 KITTSON COUNTY ...... 74 KLIPPE ...... 80 KNIFE LAKE ...... 54, 62, 63, 67, 68, 95, 165 KNIFE LAKE GROUP...... 62, 63, 67, 68, 95, 165 KNIFE LAKE SYNCLINORIUM ...... 54 KNIFE RIVER...... 10, 48 KNOWLTON FLOW ...... 21 KNOWLTON LODE ...... 21 KNOX GROUP ...... 11 KOLA PENINSULA...... 104 KOMATIITE...... 27, 48 KONA FORMATION ...... 141 KOOCHICHING COUNTY ...... 104, 129, 152 KOTULSKITE ...... 61, 124, 125, 130, 150 KREEP...... 145 KRESTSOVSKY...... 65 KRIGING...... 134 KUPFERSCHIEFER...... 25, 88 KYANITE ...... 122 K-FELDSPAR...... 21, 52, 158

239 (L)

L'ANSE ...... 71 LABRADOR ...... 65, 76, 86, 159, 189 LABRADOR TROUGH ...... 65, 189 LAC LA BELLE ...... 44, 139, 145, 159 LAC LA BELLE CONGLOMERATE ...... 139 LAC LA BELLE FISSURE ...... 139, 145, 159 LAC LA CROIX GRANITE...... 121 LACKNER LAKE ALKALIC COMPLEX ...... 15, 59, 101, 132, 148, 149, 166 LACUSTRINE ...... 7, 50, 84, 112, 130, 131, 166 LAFAYETTE BLUFF ...... 139 LAKE...... 2, 5-29, 31-49, 51-142, 145-190 LAKE COUNTY ...... 7, 9, 14, 15, 18, 19, 22, 24, 26, 31-35, 37, 38, 41-43, 48, 52, 54, 57, 62-69, 72-74, 83-86, 94-100, 104-106, 110, 111, 113-115, 117, 119-122, 125-127, 129, 132, 134-139, 146, 147, 151, 153, 155-157, 159, 160, 163-165, 169, 172, 174, 175, 179-181, 185, 186, 189 LAKE ERIE...... 54 LAKE HURON...... 51, 111, 113, 161 LAKE LINDEN...... 118, 162 LAKE MEDORA QUADRANGLE ...... 39 LAKE MICHIGAN...... 15, 27, 28, 33, 55, 63, 79, 119, 126 LAKE MINE...... 23, 25, 162 LAKE NIPIGON...... 15, 44, 119, 166, 184 LAKE OF THE WOODS COUNTY ...... 104, 129 LAKE ONE...... 113 LAKE ONTARIO...... 54 LAKE OWEN FAULT...... 6, 7, 13, 45, 48, 87, 99, 118, 120, 123, 127, 181 LAKE POLLY...... 42, 43 LAKE POLLY QUADRANGLE ...... 42, 43 LAKE SEDIMENT...... 9, 36, 173 LAKE SHORE TRAPS...... 39, 47, 68, 96, 131, 133 LAKE SUPERIOR ...... 5-21, 23-29, 31-49, 51-116, 118-142, 145-166, 168-190 LAKE SUPERIOR REGION ...... 7, 9, 14, 20, 23, 27, 28, 33, 38, 43, 44, 46, 47, 59, 60, 64, 65, 69-71, 73, 78, 89, 92, 94, 95, 98-100, 104, 105, 107, 111, 120, 121, 127, 130-134, 146, 154, 158-160, 164, 166, 173, 174, 176, 179, 182, 185, 189 LAKE SUPERIOR SYNCLINE...... 7, 33, 70, 84, 107, 114, 122, 132, 153, 169, 186 LAKE THREE...... 113 LAKE TIMISKAMING RIFT VALLEY ...... 25 LAKE TIMISKAMING STRUCTURAL ZONE...... 25 LAKE TWO...... 113 LAKE VERMILION...... 7 LAKE VERMILION FORMATION ...... 7 LAKES...... 9, 14, 16, 19, 20, 27, 29, 32, 33, 36, 37, 43, 46, 48, 49, 54, 58, 62, 63, 66, 79, 81, 103, 104, 112, 120, 121, 150, 154, 160, 161, 171-173, 184 LAKEWOOD QUADRANGLE ...... 141 LAMINATION ...... 65, 71, 125 LAMPROITES ...... 10, 111, 163, 166, 176 LAMPROPHYRE...... 52, 72, 75, 116, 138, 149, 150, 166, 176 LAND COVER ...... 9 LAND USE ...... 9, 16 LAND USE MAPS ...... 9 LANDSAT ...... 68 LANE COUNTY ...... 167 LAPIERRE TOWNSHIP ...... 103 LARAMIDE ...... 92 LARAMIDE OROGENY...... 92 LARVIK RING COMPLEX...... 180 LASALLE MINE ...... 23 LAUMONTITE...... 21, 23, 24, 66 LAURENTIA ...... 80, 84, 146 LAURENTIAN SHIELD ...... 65 LAURENTIAN SUPERCONTINENT...... 27 LAURIUM QUADRANGLE ...... 39 LAVA ...... 2, 5, 11, 20, 22, 25, 26, 47, 64, 68, 70, 76, 90, 95, 98, 100, 101, 109, 112, 127, 128, 133, 165, 190 LAVA FLOWS ...... 20, 22, 26, 47, 68, 70, 90, 133, 190 LAVERGNE CARBONATITE ...... 149 LAW ...... 77 LAWASHI RIVER ...... 149 LAX LAKE GABBRO ...... 113-115 LAYERED INTRUSION ...... 5-15, 17-26, 28-38, 40-44, 47-49, 51-57, 59-70, 72-74, 76, 77, 80, 81, 83-89, 91-107, 109-111, 113-122, 124- 127, 129-138, 140-148, 150-153, 155-157, 159, 160, 162-165, 167-169, 171-175, 178-181, 184, 185, 187-189

240 LAYERED ZONE...... 161 LE SUEUR COUNTY ...... 161 LEACHATES ...... 30, 49 LEACHING...... 15, 20, 30, 49, 68, 125, 162 LEACHING SOLUTIONS...... 30, 49 LEAD...... 17, 24, 25, 29, 34, 36, 37, 44, 47, 55, 56, 59, 60, 72, 75, 82, 84, 90-92, 94, 97, 102, 104, 109, 110, 112-114, 117, 121, 127, 129, 130, 133, 134, 140, 146, 151, 158, 159, 170, 171, 174, 189 LEAD ISOTOPES...... 47, 55, 92, 102, 104, 127, 130, 158, 170, 174, 189 LEAD ZINC DEPOSITS...... 112, 129 LEAD-LEAD...... 34, 47, 55, 59, 104, 140, 170 LEAN ORE...... 165 LEITCH MINE ...... 103 LESOTHO...... 135 LESTER RIVER...... 35, 63, 65, 86, 102 LESTER RIVER SILL ...... 35, 63, 65, 86, 102 LEVACK GNEISS ...... 75 LEVEAUX PORPHYRY ...... 63, 114 LHERZOLITE...... 111 LIAONING PROVINCE ...... 166 LIBYA...... 97 LIGHTWEIGHT AGGREGATE ...... 74 LIMA MOUNTAIN ...... 42, 43 LIMA MOUNTAIN QUADRANGLE ...... 43 LIMESTONE...... 22, 78, 94, 109, 118, 119 LIMESTONE MOUNTAIN ...... 109 LIMNOLOGY...... 72 LINCOLN COMPLEX...... 15 LINDEN GROVE QUADRANGLE ...... 104 LINDEN SYENITE...... 59, 72 LINEAMENT ...... 6, 7, 16, 20, 33, 37, 38, 73, 88, 119, 123, 125, 161 LIQUID IMMISCIBILITY...... 126, 167 LISTRIC FAULTS ...... 55 LITHIFICATION ...... 5 LITHIUM...... 56, 99, 146 LITHOFACIES...... 21, 41, 50, 75, 82, 112, 118, 130, 183 LITHOLOGY ...... 18, 41, 48, 49, 71, 83, 118, 139, 158 LITHOPROBE ...... 62, 75 LITHOSPHERE ...... 27, 30, 62, 78, 93, 97, 127, 129, 137, 158 LITHOSPHERIC MANTLE...... 27, 158 LITHOSTRATIGRAPHY...... 8, 11, 30, 39, 40, 59, 82, 86, 100, 119, 147, 161, 173 LITTLE CARP RIVER ...... 81 LITTLE DROWNING RIVER ...... 149 LITTLE FALLS FORMATION ...... 119 LITTLE GIRLS POINT QUADRANGLE ...... 82, 94 LITTLE IRON LAKE ...... 126 LITTLE MARAIS ...... 48, 65 LITTLE PIC RIVER ...... 96 LITTLE PRESQUE ISLE ...... 72 LIVINGSTON COUNTY ...... 55 LLANO PROVINCE ...... 17 LLANO UPLIFT ...... 151 LOCAL BOY...... 6, 26, 43, 48, 74, 92, 106, 107, 122, 136, 142-145, 147, 150, 156, 157 LOCAL BOY ANTICLINE ...... 74 LOELLINGITE ...... 55 LOGAN LOOP ...... 70, 99, 134, 145 LOGAN SILLS ...... 2, 17, 36, 39, 44, 55, 57, 58, 63, 64, 67, 69, 72, 76, 84, 88, 92, 96, 104, 106, 110, 113, 114, 119, 120, 122, 124, 126, 130, 133, 136, 137, 140, 145, 153, 161, 166, 169, 179, 180, 185 LOMAN QUADRANGLE ...... 104 LONETREE KIMBERLITES...... 104 LONG ISLAND ...... 18, 42, 116, 121, 179 LONG ISLAND LAKE ...... 42, 116, 121, 179 LONG ISLAND LAKE QUADRANGLE ...... 121, 179 LONGEAR ...... 74, 156 LONGNOSE ...... 33, 74, 100, 115, 156 LOON LAKE ...... 39, 167 LOUIS LAKE GRANODIORITE ...... 44 LOWER CHERTY ...... 19 LOWER CRUST...... 14, 51, 63, 171 LOWER MANTLE...... 27 LOWER ORDOVICIAN ...... 126

241 LOWER PENINSULA ...... 7, 12, 22, 25, 27, 28, 30, 33, 47, 55, 68, 75, 76, 78, 79, 81, 90, 97, 108, 109, 136, 154, 161, 163, 168, 173, 177, 187, 189 LOWER PROTEROZOIC ...... 110 LOWER RED CLASTICS GROUP...... 8 LOWER SANDSTONE ...... 22, 25, 51, 71, 107, 129, 183 LOWER SLATY...... 19 LOWER TRANSITION ...... 71 LOWER ZONE...... 30, 161 LUCILLE ISLAND ...... 63, 65, 126 LUFILIAN ARC...... 25 LUNAR BASALT ...... 19, 59, 147 LUNAR SAMPLES ...... 145 LUSK LAKE...... 149 LUTSEN ...... 63, 65, 114 LUTSEN BASALTS...... 63, 65, 114

(M)

MERENSKY REEF...... 13 MERENSKYITE...... 61, 124, 125, 130, 150 MERIDIAN AGGREGATE QUARRY ...... 74 MERTIEITE ...... 124, 150 MERTIERITE II ...... 130 MESABI DISTRICT...... 18, 72, 120 MESABI IRON RANGE ...... 18, 32, 120, 123-125 MESABI RANGE ...... 13, 18, 19, 32, 33, 37, 56, 68, 72, 73, 85, 105, 123-125, 153, 185 MESOZOIC...... 11, 13, 16, 25, 27, 29, 46, 48, 64, 74, 76, 78, 85, 90, 92, 98, 100, 108, 111, 120, 125, 132, 141, 148, 149, 159, 170, 176, 179, 181, 185 METABASALT ...... 6, 19, 106, 152 METABASITE ...... 106 METAL RECOVERY...... 162 METALLOGENESIS...... 152 METALLOGENY...... 36, 55, 123, 127, 142, 146, 152, 161 METALLURGY ...... 9, 17, 48, 51, 84, 85, 91, 105, 106, 115, 138, 147, 148, 152, 157, 162, 174, 175 METALS...... 18, 19, 30, 41, 60, 68, 74, 82, 85, 88, 94, 98, 100, 116, 117, 121-126, 132, 133, 150, 152, 156, 157, 159, 162, 164, 165, 172, 176, 178, 181, 184 METAMORPHIC ROCKS...... 160, 175 METAMORPHIC WATER ...... 90 METAMORPHIC ZONATION ...... 152 METAMORPHISM...... 5, 6, 8, 9, 11, 13, 14, 17-20, 23, 27, 29, 31, 33, 35, 40, 46, 48, 49, 55, 56, 60, 62, 63, 65, 67-70, 72, 73, 77, 79, 81, 82, 84, 87, 90-95, 98-101, 105, 106, 108, 110, 114, 119-121, 123, 124, 126, 135-137, 139-141, 143, 144, 149, 152- 154, 159, 161-163, 165, 167, 171-176, 180, 181, 189 METASANDSTONE ...... 126 METASEDIMENTARY...... 26, 47, 54, 66, 69, 73, 81, 84, 93, 110, 123, 125, 126, 136, 140 METASEDIMENTARY ROCKS...... 66, 81, 93, 110 METASEDIMENTS...... 31, 69, 91, 103, 136, 140, 167 METASOMATIC FLUIDS...... 130 METASOMATISM...... 68, 87, 104, 115, 116, 124, 130, 156, 176 METAVOLCANICS ...... 11, 31, 91, 103, 118, 140 METEOR CRATERS ...... 111 METEORIC ...... 10, 39, 90, 100, 101, 128, 142, 158, 167 METEORIC WATER ...... 10, 90, 101, 128 METEORITE ...... 70, 159 METEOROLOGY ...... 169 METEORS ...... 111 METHANE ...... 46, 133, 135, 151, 155 METHODS ...... 12, 23, 25, 31, 48, 51, 63, 70, 72, 76, 80, 85, 88, 90, 106, 111, 112, 118, 120, 126, 139, 146, 150, 152, 155, 171, 173, 186 METHYLPHENANTHRENE ...... 77 MEXICO...... 5, 17, 44, 76, 90, 92, 108, 111, 146, 159, 174, 181, 189 MIAROLITIC ...... 126, 145 MICA...... 8, 58, 68, 71, 93, 163 MICA BAY...... 8, 58, 71, 93 MICA BAY FORMATION...... 58 MICHAUD TOWNSHIP ...... 25 MICHENERITE ...... 57, 61, 117, 124, 125 MICHIGAMME FORMATION...... 27, 51, 150, 160 MICHIGAN...... 2, 5-18, 20-31, 33-41, 43-61, 63-66, 68-92, 94-101, 103-114, 118, 119, 121, 123, 124, 126-137, 139-142, 145-147, 150-154, 157-166, 168-175, 177-179, 181-190 MICHIGAN BASIN ...... 22, 25, 27, 30, 45, 53, 68, 78, 79, 81, 99, 108, 126, 132, 161, 173, 177, 178, 187

242 MICHIGAN COPPER DISTRICT ...... 2, 5, 7, 9-16, 18, 20-26, 30, 31, 34, 35, 37-40, 45, 47, 49-52, 54, 56, 58, 66, 71-74, 76-82, 84, 86-88, 90, 95, 96, 98, 100, 101, 103, 106-112, 118, 123, 128-131, 133, 134, 137, 139-142, 145, 146, 150-154, 161-163, 165, 169-171, 175, 178, 179, 181-184, 186-188 MICHIGAN MINE ...... 23 MICHIPICOTEN FAULT...... 104 MICHIPICOTEN ISLAND...... 8, 9, 12, 26, 30, 44, 48, 59, 69, 71, 79, 104, 105, 131, 134, 150, 162, 166, 169, 174, 184 MICHIPICOTEN ISLAND FAULT ...... 71, 104, 105, 150, 169 MICHIPICOTEN ISLAND FORMATION ...... 9, 12, 105, 134, 166, 174 MICROBIOLOGY ...... 118 MICROCONTINENT...... 80 MICRODIAMONDS ...... 98 MICROFOSSILS...... 13, 88, 111, 165 MICROPALEONTOLOGY ...... 13, 88 MICROTEKTITES...... 109 MICROTHERMOMETRIC ...... 155 MIDCONTINENT RIFT SYSTEM ...... 1, 1, 2, 4, 5, 7, 8, 14-16, 20, 27-29, 33, 44, 46, 47, 51, 55, 65, 78, 79, 83, 89, 91, 93, 108, 111, 113, 114, 120, 123, 127, 131, 133, 136, 137, 139, 151, 152, 166, 173, 174, 181, 186, 187 MIDDLE ISLAND POINT ...... 72 MIDDLE PRECAMBRIAN...... 37, 95, 118 MIDDLE PROTEROZOIC...... 2, 6, 29, 33, 46, 64-66, 74, 77, 81, 83, 84, 86, 98, 132, 134, 137, 166, 173, 179, 181 MIDDLE RANGE FAULT ...... 12 MIDDLE RIVER...... 45, 171, 178 MIDDLE RIVER FORMATION ...... 178 MIDDLE RUN FORMATION...... 5, 11, 47, 75, 158, 183, 187 MIDDLE ZONE ...... 161 MIDDLETON ...... 112, 136, 168, 176 MIDLAND COUNTY ...... 15 MID-ATLANTIC RIDGE...... 44, 179 MID-OCEAN RIDGE BASALTS ...... 44 MIGMATITE...... 11, 119 MIGRATION ...... 43, 108, 112, 113, 171 MILEPOST ...... 64 MILLE LACS ...... 31, 66, 69 MILLE LACS COUNTY ...... 32 MILLE LACS GROUP ...... 66 MILLERITE ...... 20, 36, 117, 125 MINAS GERAIS...... 102, 159 MINE...... 5, 9-13, 15, 17, 20-26, 30, 31, 34, 35, 37-39, 45, 47-51, 55, 56, 58, 71-74, 76-78, 80-82, 86-92, 94-96, 98, 101, 103, 105, 107-112, 118, 124, 126-131, 133, 134, 137, 139-142, 145-147, 150, 152, 154, 158, 159, 161, 162, 166, 167, 169-171, 173, 175, 178, 181-184, 186, 187 MINE PLANNING ...... 22, 87, 170, 171, 173 MINEOLA BASIN ...... 8 MINERAL...... 1, 2, 6-13, 16, 18-24, 26-31, 33-43, 48, 49, 51-54, 56, 57, 59-64, 66, 68, 69, 71-74, 80, 82-98, 100-110, 113, 115-126, 128- 138, 140-157, 159, 160, 162-167, 169, 171, 172, 174-181, 183-185, 189 MINERAL AGES...... 29, 34, 40, 52, 72, 101, 132, 133, 137 MINERAL ASSEMBLAGES...... 24, 73 MINERAL CHEMISTRY...... 6, 10, 13, 18, 20, 21, 30, 31, 35, 36, 42, 43, 51, 53, 56, 57, 61, 64, 66, 69, 73, 82, 86, 88, 89, 93-95, 97, 98, 100, 103, 106, 108, 109, 113, 115-117, 121, 122, 124-126, 130, 131, 134, 136, 138, 141, 143-154, 156, 157, 162-166, 172, 176, 180, 181 MINERAL DEPOSIT...... 6-9, 21, 26, 30, 31, 33, 35, 38, 43, 48, 49, 53, 56, 57, 62, 66, 69, 73, 74, 80, 84, 87, 88, 92, 94, 97, 100-102, 104- 107, 110, 115, 117, 118, 122, 126, 130, 134-136, 141-145, 147, 150, 155-157, 162, 165, 167, 169, 171, 172, 175, 178, 180, 181, 183 MINERAL DEPOSITS...... 1, 2, 7, 9-11, 19-24, 26, 27, 34, 37-39, 48, 51, 57, 60, 61, 63, 66, 71, 80, 84, 86, 88-92, 94, 98, 100, 101, 107, 110, 115, 122, 128-130, 135, 140, 145, 146, 149, 150, 153-155, 157, 159, 160, 162, 166, 167, 174, 175, 181, 183, 184, 189 MINERAL ECONOMICS ...... 74 MINERAL EVALUATION ...... 100 MINERAL EXPLORATION ...... 120, 126, 146 MINERAL FIBERS...... 10 MINERAL FORK FORMATION ...... 83 MINERAL LAKE FAULT...... 91, 123, 160 MINERAL LAKE INTRUSION...... 6, 12, 29, 34, 93, 122, 131, 132, 155, 185 MINERAL PLANNING ...... 22 MINERAL POTENTIAL ...... 18, 22, 28, 41, 110, 165, 179 MINERAL PROCESSING...... 1, 37, 61, 68, 74, 84, 85, 88, 92, 96, 97, 105, 115, 125, 138, 146-148, 152, 157, 162, 165, 174, 175, 184 MINERAL PRODUCTION ...... 73 MINERAL RESOURCE...... 22 MINERAL RESOURCES...... 7, 27, 54, 73, 84, 85, 96, 97, 100, 160, 165 MINERAL SEPARATION...... 146 MINERAL ZONING...... 165, 183

243 MINERALIZATION...... 1, 2, 5-12, 16-27, 29-31, 33-40, 43, 47-49, 51-58, 60, 61, 63, 66, 67, 69-71, 73-75, 77, 80-82, 84, 85, 87, 88, 90-94, 97, 100-112, 115-118, 121-157, 159-162, 165-167, 169-172, 175-184, 187, 189 MINERALOGY ...... 5-7, 10, 14, 16, 19, 20, 23-26, 31, 36-39, 43, 44, 53, 55-57, 61, 62, 68, 69, 72, 73, 75, 77, 80, 82, 85, 86, 88, 92-94, 97, 103, 105, 111, 115-120, 124, 126, 128-131, 133, 135, 138-141, 143-145, 147, 148, 150, 152-154, 161, 163-167, 171, 172, 175, 177, 181-185 MINERALS...... 6, 7, 9, 10, 14-16, 18, 19, 21, 22, 25, 26, 35, 41, 48-50, 61, 63, 64, 69, 71, 73-76, 80, 84-86, 91, 94, 96, 100, 105, 106, 109- 111, 115, 117-119, 121-127, 129, 130, 135, 139, 144-148, 151, 154, 155, 157, 158, 166, 171-173, 176-178, 180, 181, 184 MINES...... 9-11, 18, 21, 30, 36, 37, 47, 48, 55, 57-59, 66, 68, 73, 75, 80, 84, 88, 91, 92, 102, 103, 108-111, 115, 118, 125, 129, 135, 139- 141, 148, 149, 151, 152, 157, 158, 161, 162, 170, 171, 173, 175, 176, 178, 184, 186, 189 MINEWATER...... 49, 90 MINING...... 1, 9, 11, 12, 15-22, 25, 26, 30, 31, 34, 38, 48, 49, 51, 56, 58, 66, 68, 69, 72, 73, 77, 81, 82, 84, 85, 87, 88, 91, 94, 96, 98, 105, 106, 108, 110, 111, 115, 132, 134, 135, 140, 141, 146-148, 150-154, 157, 159-162, 165, 167, 170-175, 178-184, 187 MINING COSTS...... 111 MINING GEOLOGY ...... 25, 98, 161, 162 MINING METHODS ...... 111, 150 MINING TECHNIQUES ...... 171 MINNAMAX ...... 6, 9, 13, 21, 26, 30, 31, 33-35, 43, 48, 49, 53, 56, 62, 63, 66, 73, 74, 80, 87, 88, 92, 93, 100, 101, 104-107, 115, 117, 118, 122, 126, 135, 136, 142-145, 147, 150, 156, 157, 164, 165, 167, 172, 178, 181 MINNAMAX SHAFT ...... 181 MINNESOTA ...... 1, 5-49, 51-70, 72-74, 76-107, 109-148, 150-182, 184-190 MINNESOTA FISSURE...... 23 MINNESOTA MINE...... 23 MINNESOTA RIVER...... 16, 32, 34, 48, 60, 104, 120, 121, 152, 159, 161 MINNESOTA RIVER VALLEY ...... 16, 32, 34, 60, 104, 120, 121, 152, 159, 161 MINNESOTA RIVER VALLEY SUBPROVINCE ...... 16, 32, 34, 60, 104, 120, 121, 152, 159, 161 MINONG ...... 6 MINOR ELEMENT ANALYSES ...... 9, 13, 20, 39, 52, 53, 56, 57, 61, 64, 68, 94, 97, 98, 100, 101, 113, 115, 141, 148, 149, 156, 158, 159, 176 MINOR ELEMENTS ...... 39, 84, 106, 116, 126, 133, 156, 165 MINOR ELEMENTS ANALYSES ...... 156 MIOCENE...... 76 MISSISSIPPI...... 10, 11, 30, 82, 84, 90, 111, 112 MISSISSIPPI EMBAYMENT ...... 90 MISSISSIPPIAN...... 37, 47, 78 MISSOURI ...... 16, 17, 22, 57, 111, 113, 151, 154, 160, 161, 167, 174, 187, 189 MISSOURI GRAVITY LOW...... 16 MIXING...... 94, 141, 142, 155, 181 MOBILITY ...... 150, 151 MODAL ...... 6, 21, 23, 31, 38, 53, 103, 125, 159, 163 MODAL LAYERING ...... 125 MODEL...... 7, 11, 23, 27-29, 31-33, 41, 45-47, 49, 50, 53, 85, 89, 94, 96, 99, 104, 108, 110, 123, 125, 127-129, 141, 157, 158, 163, 168, 173, 175, 180, 182, 186 MODELLING ...... 5, 6, 14-16, 25, 31-33, 45, 49, 53, 79, 83, 86, 90, 93, 96, 97, 101, 102, 104, 105, 109, 129, 141, 151, 152, 157, 158, 161, 163, 168, 169, 180 MODELS...... 5, 8, 14, 25, 30, 41, 46, 49, 50, 69, 92, 99, 101, 104, 105, 122, 127, 129, 150, 151, 154, 157, 168, 169, 174, 175, 179, 183, 189 MOHAWK ...... 21, 43, 118, 145, 154, 162, 187 MOHAWK MINE ...... 21, 154, 162, 187 MOHAWK QUADRANGLE ...... 43 MOHO...... 25, 27, 28, 51, 58, 82, 83, 86, 113, 151, 161, 169, 171 MOJAVE PROVINCE ...... 174 MOLANGO ...... 108 MOLECULAR FOSSILS ...... 80 MOLYBDENITE ...... 10, 58, 68, 117, 150, 151 MOLYBDENUM ...... 10, 17, 68, 117, 128, 146, 151, 160 MONCHEITE ...... 117 MONICO FAULT...... 91, 123 MONOCLINE ...... 29, 39, 56 MONOMETHYL ALKANES ...... 107 MONTANA...... 17, 21, 25, 40, 44, 45, 60, 65, 76, 83, 104, 111, 121, 125, 140, 173, 189 MONTEVIDEO GNEISS...... 60 MONTEVIDIO QUADRANGLE ...... 104 MONTREAL RIVER ...... 29, 104, 129, 134, 158, 161 MONTREAL RIVER FAULT ...... 104, 158 MONTREAL RIVER MONOCLINE ...... 29 MONZODIORITE...... 176 MOON...... 10, 145 MOOSE LAKE...... 63, 69, 104

244 MOOSE LAKE QUADRANGLE ...... 104 MOOSE RIVER BASIN...... 33 MORB...... 27, 44 MORGAN QUADRANGLE ...... 104 MORRIS FAULT ...... 58 MORRISON COUNTY ...... 69, 151, 163 MORTON GNEISS...... 60, 121 MOSES ROCK DIATREME ...... 111 MOSS LAKE INTRUSION ...... 166 MOSS LAKE NORITIC INTRUSION...... 90 MOTKA SUITE ...... 45 MOTT ISLAND ...... 96 MOUNT BOHEMIA ...... 21, 23, 35, 88, 139, 145, 159, 187 MOUNT BOHEMIA STOCK ...... 21, 23, 35, 139, 159 MOUNT GRATIOT ...... 25 MOUNT HOUGHTON FELSITE ...... 56 MOUNT MOLLIE ...... 58, 77, 140, 161, 166, 167 MOUNT SIMON FORMATION ...... 56, 171 MOUNT THIRSTY ...... 21 MOWER COUNTY ...... 118 MOZAMBIQUE ...... 44 MT. BOHEMIA DEPOSIT...... 187 MT. HOUGHTON RHYOLITE ...... 34, 145 MT. ISA INLIER...... 65 MT. KEITH...... 48 MT. SIMON SANDSTONE ...... 11, 40, 55, 68, 70, 78, 99, 100, 158, 163 MT. WEBBER QUADRANGLE ...... 33 MT. WEBER...... 19, 174 MUD CRACKS...... 71 MUDSTONE...... 55, 181 MUGEARITE ...... 64 MULE EAR DIATREME...... 111 MUNTSCHE GORA PLUTON ...... 104 MUNTSCHE TUNDRA ...... 104 MURFREESBORO DISTRICT ...... 176 MURRAY FAULT ...... 91 MUSCOVITE ...... 34 MUSKOX INTRUSION ...... 13, 52, 65, 130, 167 MUTHMANNITE ...... 124 MYLONITE...... 26

(N)

N2...... 135, 155 NAA...... 155 NADEZHDINSKY FORMATION...... 100 NAGAGAMI RIVER ALKALIC COMPLEX ...... 149 NAIN...... 86 NAMIBIA ...... 65 NAPOLEON SANDSTONE ...... 76 NASHWAUK QUADRANGLE ...... 104 NATHAN'S LAYERED SERIES ...... 42, 44, 87, 114, 119, 120, 126, 133, 163, 180 NATIVE AMERICANS ...... 66 NATIVE BISMUTH...... 36, 57, 121 NATIVE COPPER ...... 2, 5, 9-12, 20, 21, 23-25, 29, 30, 34, 35, 37-40, 48, 51, 54, 55, 57, 58, 66, 69-71, 74, 77, 80-82, 87, 88, 90, 91, 94- 96, 107, 108, 111, 120, 128-130, 133, 139-142, 145, 146, 150, 153, 154, 161-163, 165, 178, 179, 181-184, 187 NATIVE GOLD ...... 77, 117 NATIVE PALLADIUM ...... 124 NATIVE SELENIUM ...... 91 NATROLITE...... 23 NATURAL GAS...... 6, 133 NATURAL ORE...... 105 NATURAL REMANENT MAGNETIZATION ...... 76, 108, 173 NAUMANNITE ...... 124 NCHANGA MINE ...... 25 NEBRASKA ...... 5, 17, 29, 36, 37, 60, 70, 94, 97, 99, 137, 154, 159, 160, 174, 187, 189 NELSON COUNTY ...... 189 NELSONITE...... 143 NEMAG LAKE...... 149

245 NEMAHA RIDGE ...... 25, 68 NEMAHA TECTONIC ZONE ...... 16 NEMEGOSENDA LAKE ALKALIC COMPLEX ...... 15, 21, 148, 149, 166 NEMOGOSENDA LAKE ALKALIC COMPLEX ...... 21, 59, 149 NEODIGENITE ...... 130 NEODYMIUM ...... 14, 27, 44, 47, 57, 72, 127, 130, 133, 139, 155, 158, 174 NEODYMIUM ISOTOPES ...... 14, 27, 44, 47, 57, 72, 127, 130, 133, 155, 158, 174 NEOTECTONICS...... 173 NEPHELINE...... 5, 37, 61, 91, 116, 170 NEPHELINE SYENITE...... 91, 116 NEPHELINITE...... 44 NEQAUNEE IRON FORMATION ...... 128, 162 NETT LAKE QUADRANGLE ...... 104 NETTLETON PORPHYRITIC BASALT ...... 65 NEUTRON ACTIVATION ANALYSIS ...... 155 NEVADA ...... 76, 82, 139, 187, 189 NEW ARCADIAN MINE...... 23, 187 NEW BRUNSWICK...... 76, 82 NEW ENGLAND ...... 82, 151 NEW HAMPSHIRE ...... 76, 82, 151 NEW JERSEY...... 44, 76, 82, 187, 189 NEW MEXICO...... 5, 17, 44, 76, 90, 92, 111, 174 NEW YORK ...... 13, 48, 51, 53, 54, 64, 67, 76, 77, 82, 100, 102, 111, 132, 137, 138, 154, 159, 162, 171, 178, 182, 189 NEW ZEALAND ...... 189 NEWFOUNDLAND ...... 76, 189 NEWMAN ISLAND...... 59 NEWTON LAKE ...... 60, 63 NEWTON LAKE FORMATION...... 60 NEWTON LAKE GROUP...... 63 NEYS DIATREME...... 12, 17, 148, 149 NEYS PENINSULA...... 148 NEYS PROVINCIAL PARK ...... 17 NIAGARA FAULT ZONE ...... 63, 91, 119, 161 NIAGARAN FORMATION ...... 78 NICCOLITE ...... 9, 36, 55, 57, 85, 121, 125, 147, 154 NICKEL...... 5-10, 12, 13, 19-24, 26, 29, 30, 33-38, 40-43, 47-49, 53, 54, 57, 59-63, 66, 68, 69, 73, 74, 77, 80, 81, 84, 85, 87, 88, 91, 92, 94, 96-107, 109, 110, 115-118, 121-132, 134-136, 138, 141-153, 155-162, 164-167, 169, 171-176, 178-181, 188, 189 NICKEL LAKE...... 138 NICKELINE ...... 117 NICKELOAN PYRITE ...... 36, 103 NICOLITE...... 124, 167 NIGERIA...... 189 NIOBIUM ...... 36, 135, 148, 177 NIPIGON BAY ...... 167 NIPIGON EMBAYMENT ...... 166 NIPIGON PLATE ...... 33, 44, 166 NIPIGON RIVER ...... 15 NIPIGON SILLS ...... 52, 72, 166 NIPISSING DIABASE...... 52, 60 NISKIBI LAKE...... 149 NITROGEN...... 83, 135, 151, 155, 169 NITROGEN DIOXIDE...... 169 NITROGEN ISOTOPES...... 83 NO2...... 169 NOD...... 154 NOISE...... 169 NOMENCLATURE ...... 28, 132, 138 NONACHO DIKE SWARM ...... 72 NONESUCH MINE ...... 96, 128, 183 NONESUCH SHALE ...... 2, 7, 10, 11, 13, 15, 21-26, 29-31, 34, 37, 38, 41, 43, 45-47, 49-52, 56, 71-74, 76-86, 88, 90, 91, 96-98, 107-113, 116, 118, 123, 124, 126, 128-131, 133, 136, 137, 139-141, 145, 146, 150, 152, 154, 161, 165, 166, 169-171, 173, 175, 182-184, 186, 187 NON-DEPLETED ...... 133 NON-FERROUS MINERALS ...... 18, 22 NOPEMING ...... 46, 63, 65, 91, 107, 111, 119, 131, 185 NORIL'SK...... 13, 64, 75, 100, 125, 141, 148, 179, 181 NORIL'SK-KHARAYELAKHSKY FAULT ...... 100, 141 NORITE...... 35, 75, 175 NORMAL MAGNETIZATION...... 44, 91, 145 NORMAL POLARITY...... 6, 28, 44, 58, 65, 66, 70, 84, 90, 98, 99, 105, 137, 141, 174

246 NORRIS KIMBERLITE...... 111 NORTH AMERICA ...... 2, 7, 8, 15-17, 28, 44, 46, 50, 61, 64-66, 75, 76, 78, 80, 83, 90, 102, 108, 114, 127, 129, 137, 146, 160, 163, 165, 173, 174, 187 NORTH AMERICAN PLATE...... 128 NORTH ATLANTIC...... 179, 180 NORTH CAROLINA ...... 82, 189 NORTH CHINA BASIN...... 45 NORTH CHINA DEPRESSION ...... 166 NORTH CHINA PLATFORM...... 166 NORTH DAKOTA ...... 17, 59, 60, 160 NORTH IRONWOOD QUADRANGLE ...... 82 NORTH KAWISHIWI RIVER...... 63 NORTH KEARSARGE MINE...... 23 NORTH RIVER-MOUNT MOLLIE INTRUSION ...... 161 NORTH SEA...... 97 NORTH SHORE GOLD...... 36 NORTH SHORE VOLCANIC GROUP...... 13, 18, 19, 22, 26, 28, 32, 33, 37, 42-44, 47, 48, 53, 55, 60, 63-67, 69, 72, 76, 83-87, 91, 93-95, 97, 98, 111, 113, 114, 119, 120, 122, 126, 127, 137-140, 145, 147, 151-153, 157, 159, 166, 169, 171, 172, 174, 180, 181, 185, 186 NORTHEASTERN KANSAS ...... 25, 155, 156, 163, 186, 188 NORTHEASTERN WISCONSIN ...... 56 NORTHERN...... 5-7, 9, 11-13, 15-18, 20, 21, 24, 25, 27-30, 35, 37, 40-42, 44, 45, 50, 51, 59, 60, 67, 69, 71-73, 79, 81, 83-87, 89, 90, 92, 93, 96, 98-101, 103, 108-111, 116, 118, 119, 121, 125-130, 132, 136-139, 148, 149, 151, 152, 155, 160, 163, 171, 173, 178, 182-185, 188 NORTHERN EMPIRE MINE...... 103 NORTHERN LIGHT GNEISS...... 60 NORTHERN LIGHT LAKE...... 42, 67, 72 NORTHERN MICHIGAN ...... 5, 18, 24, 27-30, 35, 41, 50, 51, 69, 71, 79, 81, 87, 89, 90, 92, 100, 101, 108, 121, 127, 128, 130, 137, 139, 160, 163, 182, 183, 188 NORTHERN NATURAL GAS WELL ...... 6 NORTHERN WISCONSIN ...... 5, 7, 20, 27, 79, 83, 89, 93, 98, 118, 160, 173 NORTHFIELD ANTICLINE ...... 163 NORTHLAND SILL ...... 63, 65 NORTHWEST...... 12, 13, 24, 25, 52, 60, 65, 76, 80, 90, 92, 96, 102, 118, 123, 130, 145, 155, 167 NORTHWEST ANGLE ...... 60 NORTHWEST TERRITORIES ...... 13, 25, 52, 65, 76, 90, 92, 130, 167 NORTHWEST TERRITORY...... 24 NORTHWESTERN WISCONSIN...... 6, 31-33, 40, 98, 116, 118, 120, 131, 132, 136, 145, 160 NORTON COUNTY ...... 159 NORWAY...... 92, 180, 189 NOVA SCOTIA ...... 23, 37, 44, 76, 82, 102 NRRI ...... 1, 57, 74, 94, 122, 136, 156, 157, 165, 189 NUMAKAGON RIVER ...... 84

(O)

OAK BLUFF FORMATION ...... 123, 141 OAK BLUFF VOLCANICS ...... 94 OCCURRENCE ...... 5, 14, 29, 37, 49, 51, 68, 94, 95, 109, 117, 125, 133, 136, 147, 162, 175, 184, 188 OCEANIC ISLAND ARC ...... 80 OCEANIC ISLAND BASALTS ...... 27 OGISHKE CONGLOMERATE ...... 95 OHIO...... 5, 11, 30, 47, 52, 75, 78, 117, 128, 145, 154, 158, 164, 171, 174, 183, 187, 189 OIB...... 27 OIL...... 7, 13, 15, 26, 29, 37, 43-47, 49, 56, 68, 74, 77, 78, 90, 97, 108-110, 112, 113, 123, 128, 133, 134, 136, 137, 154, 173, 174 OJIBWA FAULT ...... 114, 157 OJIBWAY MINE ...... 24 OKLAHOMA ...... 5, 17, 32, 76, 78, 83, 90, 112, 174, 189 OKLAHOMA AULACOGEN ...... 90, 174 OLD COLONY TUNNEL ...... 187 OLIGOCENE ...... 76 OLIVINE...... 6, 8-10, 30, 31, 42-44, 53, 57, 61, 63, 64, 66, 68, 73, 88, 89, 97, 98, 101, 103, 106, 113, 115, 116, 121, 124-126, 130, 131, 145, 146, 149, 150, 163, 176, 180 OLIVINE BASALT...... 44, 63, 64 OLIVINE DIABASE...... 64 OLIVINE GABBRO ...... 98, 124 OLIVINE LAMPROITE...... 176 OLIVINE NORMATIVE ...... 30 OLIVINE THOLEIITE...... 8, 9, 63, 64, 66, 101

247 OMADAY LAKE ...... 138 ONAPING FORMATION ...... 75 ONCOLITES...... 94 ONEOTA DOLOMITE...... 11, 164 ONTARIO...... 5, 8-12, 14-18, 20, 21, 23, 25-31, 33-42, 44, 46, 48-61, 63-66, 68-73, 75-86, 88, 90-113, 115, 116, 118, 119, 123-125, 127- 132, 134-142, 145-151, 153-155, 157-159, 161, 162, 164, 166-171, 173-180, 183-186, 188, 189 ONTONAGON ...... 7, 10, 11, 13, 14, 22, 24-26, 28, 30, 31, 34, 35, 37, 41, 45, 47, 49-51, 56, 58, 68, 71-74, 76-83, 86-88, 90, 94, 96, 98, 101, 107-112, 118, 123, 128-131, 137, 139-141, 145-147, 150, 154, 158-163, 169-173, 175, 182-184, 186, 187 ONTONAGON BASIN ...... 123 ONTONAGON COUNTY ...... 24, 25, 87, 98, 140, 163, 172, 173, 183, 187 ONTONAGON RIVER ...... 162 ONVERWACHT ...... 137 ONWATIN FORMATION...... 75 OPEN STOPING...... 106 OPHITIC BASALT...... 64, 65 OPX...... 30, 53, 57, 68, 89, 97, 113, 131 ORA BANDA ...... 21 ORDOS DEPRESSION ...... 166 ORDOVICIAN ...... 9, 11, 47, 68, 74, 76, 78, 79, 96, 98, 99, 109, 111, 118, 120, 126, 132, 137, 147, 149, 161, 169 ORE...... 6-13, 17-27, 29, 31, 35-37, 41, 43, 48, 51-57, 60, 61, 67-71, 73-77, 79-82, 84, 86-90, 92, 94, 96, 97, 100, 103-110, 112, 115, 117, 121-126, 128-130, 132, 134, 135, 138-147, 150-152, 154-157, 160-162, 165-167, 171-173, 175, 176, 178-186, 189 ORE DEPOSIT ...... 6-8, 10, 12, 17-20, 22, 26, 35, 41, 43, 48, 53, 57, 68, 74, 81, 84, 87, 92, 94, 100, 104-107, 115, 117, 122, 125, 126, 130, 134, 135, 138, 141-145, 147, 152, 155-157, 165, 167, 172, 175, 178, 179, 181, 182 ORE DEPOSITION...... 23, 35, 79, 92, 96, 140 ORE DEPOSITS...... 13, 51, 88, 108, 112, 128, 146, 151, 180-182 ORE FORMING FLUID...... 181 ORE FORMING FLUIDS...... 88, 112, 181 ORE GENESIS ...... 8, 23, 35, 48, 54, 103, 141-144, 147, 178-180, 182 ORE GRADE...... 48, 109, 165, 171 ORE MINERALS ...... 7, 69, 94, 180 ORE RESERVES ...... 9, 51, 92, 100, 105, 125, 128, 141, 155 OREGON...... 1, 76, 97, 159, 167 ORGANIC CARBON ...... 74, 78, 133 ORGANIC GEOCHEMISTRY ...... 5, 13, 15, 29, 37, 49, 50, 74, 77, 78, 80, 83, 84, 86, 107, 108, 110-112, 128, 130, 139, 152, 183 ORGANIC MATTER ...... 5, 50, 74, 77, 107, 112 ORIENTATION ...... 35, 70 ORIENTITE...... 76 ORIGIN...... 5, 6, 11-14, 17, 19-21, 23, 24, 26-31, 37-39, 47, 49-52, 55, 57, 60, 61, 63, 64, 66, 67, 70, 71, 74, 75, 78-83, 87, 88, 90, 92-94, 96, 97, 100, 103, 106, 107, 109, 111-117, 122, 125-129, 132, 134-136, 138, 140-143, 145, 153, 154, 156, 161, 162, 170, 172, 174-176, 178, 179, 181-183 OROGENY ...... 7, 27-29, 33, 35, 40, 42, 47, 54, 61, 62, 65, 66, 70, 75, 78, 80, 84, 92, 104, 121, 125, 128, 132, 135, 150, 161, 166, 171, 173-175, 185, 188 ORONTO GROUP ...... 41, 45, 46, 50, 83, 89, 109, 139 ORR QUADRANGLE ...... 104 ORSHANO ...... 65 ORTHOCLASE...... 61 ORTHOMAGMATIC...... 144 ORTHOPYROXENE ...... 18, 30, 53, 57, 61, 68, 89, 97, 113, 121, 130, 131 ORTHOQUARTZITE ...... 107, 171 OSCEOLA AMYGDALOID ...... 23, 24, 179, 187 OSCEOLA LODE...... 187 OSCEOLA MINE...... 12, 21, 23, 24, 162, 182, 187 OSLER GROUP ...... 28, 29, 36, 44, 55, 59, 64, 65, 69, 70, 84, 90, 100, 107, 109, 110, 130, 131, 137, 149, 166, 167, 169, 176 OSLO RIFT...... 180 OSMIUM ISOTOPES...... 30 OTTAWA-BONNECHERE GRABEN ...... 149 OTTAWA-BONNEECHERE GRABEN SYSTEM...... 149 OTTER COVE ...... 10 OTTO ALKALIC COMPLEX ...... 149 OUIS ...... 19, 61, 73, 74, 100, 103, 115, 121, 122, 130, 143, 146, 156, 165, 188, 189 OUTCROP...... 19, 40, 65, 79, 119, 132, 172 OUTER CONGLOMERATE ...... 87 OUTLIERS ...... 109 OUTWASH...... 7 OVERBURDEN ...... 35, 157, 165, 166 OVERPRINTING...... 70, 134 OXIDATION...... 25, 49, 80, 85, 96, 128, 140, 150, 152 OXIDE-BEARING ULTRAMAFIC INTRUSION ...... 19, 61, 74, 100, 103, 115, 121, 122, 143, 146, 155, 156, 165, 188, 189 OXIDE...... 19, 41, 53, 61, 74, 100, 103, 115, 121, 122, 135, 143, 146, 151, 155, 156, 165, 185, 188, 189 OXIDES...... 25, 35, 39, 50, 51, 68, 74, 88, 89, 103, 115, 122, 135, 151, 156, 165, 185, 188, 189

248 OXYGEN FUGACITY ...... 115, 135, 151 OXYGEN ISOTOPES ...... 10, 35, 89, 90, 92, 97, 99, 101, 117, 122, 124, 127, 128, 136, 143, 144, 152, 159, 167, 187, 189

(P)

P T CONDITIONS ...... 91, 128 PAINESDALE...... 111 PAINT RIVER GROUP ...... 66, 128, 173 PAJARITO MOUNTAIN ...... 5 PALEOBIOLOGY ...... 13 PALEOBOTANY...... 13 PALEOCLIMATOLOGY...... 50, 88, 168 PALEOCURRENTS...... 41, 71, 81, 86, 89, 107, 111, 131 PALEOECOLOGY...... 11, 50 PALEOGENE ...... 16 PALEOGEOGRAPHIC MAP...... 160 PALEOGEOGRAPHY...... 11, 45, 50, 71, 86, 88, 89, 146 PALEOMAGNETIC POLE ...... 47, 68, 158 PALEOMAGNETISM ...... 6, 8, 14, 16, 20, 25, 28, 30, 32, 42-44, 47, 48, 50, 51, 53, 56, 58, 63, 65, 66, 68-71, 76, 77, 81, 82, 84, 85, 89, 90, 93, 98, 99, 101, 104, 106, 108, 112, 121, 127, 128, 131, 133, 134, 136, 137, 145, 146, 158, 161, 163, 167, 173- 175, 178 PALEONTOLOGY...... 13, 88, 118, 184 PALEOPOLE ...... 53, 70, 85, 99, 163 PALEOSOLS...... 88, 89 PALEOSTRESS ...... 184, 186 PALEOSTRESS ANALYSIS ...... 186 PALEOZOIC...... 6, 7, 9-11, 15, 16, 21, 24, 25, 29, 30, 37, 38, 40, 44, 47, 48, 52, 55, 56, 59, 60, 68-71, 73, 74, 76, 78, 79, 88-91, 96, 98- 101, 109, 111-113, 118-123, 126, 132, 137, 140, 145, 147, 149, 154, 158, 159, 161, 163-165, 169-171, 178, 180, 183, 184, 187, 189 PALISADE HEAD ...... 63 PALISADE RHYOLITE ...... 65 PALISADES SILL ...... 44 PALLADIUM ...... 13, 36, 40, 41, 56, 57, 98, 117, 124, 125, 144, 147, 165 PALLADIUM BISMUTHOTELLURIDE ...... 125 PALLADOARSENIDE ...... 124, 150 PALMS FORMATION...... 122, 123 PALYNOMORPHS ...... 165 PANASQUEIRA ...... 147 PANCAKE BAY...... 9 PAN-AFRICAN ...... 65 PAOLOVITE...... 61, 124, 125 PARAGENESIS ...... 10, 21, 24, 38, 51, 55, 84, 110, 124, 125, 133, 140, 145, 167, 182 PARAGUAY ...... 64 PARAUTOCHTHONOUS ...... 150 PARDEE TOWNSHIP ...... 29, 36, 48, 49, 58, 77, 103, 109, 123, 127, 140, 141, 166, 167, 177, 183 PARENT MAGMA...... 31 PARENTAL MAGMA...... 30 PARFENOVO HORIZON ...... 45 PARKERITE...... 117, 121 PARRAL...... 147 PARTIAL MELTING ...... 36, 97 PARTIAL SELF REVERSAL ...... 175 PARTICLE SIZE...... 96 PARTICULATES...... 169 PARTING SHALE ...... 52, 183 PARTING SHALE MEMBER...... 52 PARTRIDGE RIVER ...... 6, 8, 9, 13, 19, 21, 26, 30, 31, 33-35, 43, 48, 49, 53, 56, 57, 61-63, 66, 73, 74, 80, 84, 85, 87-89, 92, 93, 100, 101, 104-107, 113-115, 117-120, 122, 126, 130, 133-136, 141-145, 147, 150, 156, 157, 164, 165, 167, 169, 171, 172, 178, 180, 181 PARTRIDGE RIVER INTRUSION...... 6, 8, 9, 13, 19, 21, 26, 30, 31, 33-35, 43, 48, 49, 53, 56, 57, 61-63, 66, 73, 74, 80, 84, 85, 87-89, 92, 93, 100, 101, 104-107, 113-115, 117-120, 122, 126, 130, 133-136, 141-145, 147, 150, 156, 157, 164, 165, 167, 169, 172, 178, 180, 181 PARTRIDGE RIVER TROCTOLITE SERIES...... 8, 26, 48, 53, 57, 74, 84, 89, 93, 100, 117, 118, 122, 130, 134, 141, 142, 144, 156, 165, 172, 181 PASS LAKE FORMATION...... 131 PASSIVE MARGIN ...... 52 PEA SOUP LAKE...... 63 PEACE CREEK TECTONIC ZONE ...... 16 PEAT...... 22, 28, 85, 96

249 PEBBLES ...... 81, 134 PECHENGA ...... 27 PEGMATITE...... 21, 36, 38, 63, 67, 68, 91, 95, 123, 131, 138, 146, 155, 159, 165, 176, 177 PELITE ...... 144 PELITIC...... 95, 143, 144 PELTON CREEK FAULT ...... 29, 75, 108, 159 PEMBINE-WAUSAU TERRANE...... 28, 91 PENINSULA MINE ...... 39 PENNSYLVANIA ...... 76, 111, 154, 187 PENNSYLVANIAN ...... 47, 76, 189 PENOKEAN ...... 14, 17, 27-29, 32-34, 40, 44, 48, 51, 52, 60, 62, 66, 75, 80, 91, 121, 123, 125, 128, 132, 135, 150, 159, 161, 166, 171, 173- 175, 188 PENOKEAN OROGEN ...... 17, 32, 51, 80, 91, 123, 132, 161 PENOKEAN OROGENY ...... 27-29, 33, 40, 62, 66, 75, 121, 125, 132, 135, 150, 161, 166, 171, 173, 175, 188 PENTLANDITE ...... 6, 7, 13, 19-21, 35, 36, 42, 53, 57, 61, 69, 73, 74, 85, 97, 103, 114, 116, 117, 121, 122, 125, 130, 142, 144, 147, 155, 165, 175, 180 PEOPLES REPUBLIC OF CHINA ...... 45, 46, 97, 166 PEPIN COUNTY ...... 118 PERENT LAKE...... 42 PERENT LAKE QUADRANGLE ...... 42 PERIDOTITE ...... 19, 67, 88, 100, 121, 146, 163, 175 PERIDOTITIC DIAMONDS ...... 98 PERIDOTITIC GARNETS...... 111 PERMEABILITY ...... 25, 89, 162 PERMIAN...... 16, 76, 88, 90, 111, 180 PERMIAN BASIN ...... 90 PERMITTING...... 22 PEROVSKITE...... 75 PERTATATAKA SANDSTONE ...... 46 PETER MITCHELL ...... 156 PETROCHEMISTRY...... 6, 53, 113, 141 PETROFABRICS ...... 30, 76 PETROGENESIS ...... 14, 59, 93, 95, 97, 98, 103, 113-115, 121, 126, 127, 132-134, 136, 141, 143, 146, 150, 152, 157, 158, 174, 179, 180, 183, 184 PETROGRAPHY ...... 6, 9, 12, 16, 17, 20, 35, 38, 42, 47, 48, 50-53, 57, 59-66, 69, 71, 73, 81, 89, 92, 94, 95, 98, 100, 101, 103, 104, 106, 107, 110, 111, 115, 118, 119, 121, 122, 124, 126, 127, 131, 132, 140, 141, 147, 149, 151, 154, 156, 159, 161-163, 166-168, 171, 172, 176, 178, 180, 181, 184, 185, 190 PETROLEUM...... 7, 8, 16, 26, 29, 30, 33, 37, 40, 41, 43, 45-49, 51, 56, 68, 71, 74, 77-79, 83, 84, 90, 91, 95, 97, 102, 107, 108, 110, 113, 123, 126, 128, 130, 131, 133, 134, 136-139, 152-154, 174, 182, 183, 186 PETROLOGY...... 5, 6, 8, 9, 11-15, 17, 18, 21, 25, 26, 30, 31, 35, 36, 39-44, 46-51, 53, 54, 56, 57, 59-64, 66, 68, 71, 75-77, 79, 81, 83-91, 93-104, 106-109, 111-120, 122, 124-129, 131-136, 138, 139, 141, 143, 145-151, 156-160, 162, 165-168, 170-172, 175- 177, 179-181, 183-185, 187 PEWABIC AMYGDALOID ...... 23, 24, 38, 39 PEWABIC LODE...... 24, 187 PEWABIC WEST CONGLOMERATE ...... 103 PGE ...... 5, 13, 19, 21, 36, 40, 41, 49, 53, 56, 57, 60, 61, 74, 85, 94, 98, 100, 105, 109, 113, 116, 117, 121-126, 130, 136, 137, 143, 144, 146-152, 156, 157, 161, 162, 165, 172, 175-179, 181, 184, 189 PGM...... 85, 94, 98, 117, 124-126, 130, 147, 148, 177, 178 PHANEROZOIC ...... 6, 7, 9-11, 15, 16, 18, 21, 22, 24, 25, 27-30, 33, 35, 37, 38, 40, 44, 46-48, 52, 55, 56, 59-61, 64, 68-71, 74, 76, 78, 79, 85, 88-92, 96, 98-101, 104, 105, 108, 109, 111, 116, 118-123, 125, 126, 131, 132, 137, 140, 141, 145, 147-149, 154, 158, 159, 161-164, 168-172, 176, 178-181, 183-189 PHENOCRYSTS...... 154 PHILIPPS CREEK MEMBER ...... 9 PHLOGOPITE ...... 10, 111 PHOENIX FISSURE...... 23, 24 PHOENIX MINE...... 23, 187 PHOENIX QUADRANGLE ...... 39 PHOSPHORITES ...... 69 PHOSPHORUS...... 143, 148 PHOTOGEOLOGY...... 11 PHYSIOGRAPHY ...... 131 PHYTANE...... 13, 15, 49, 77, 107, 111 PIC ISLAND...... 98 PIC RIVER ...... 96, 183 PICRITE ...... 21, 93 PICRITES ...... 27, 166 PICTURED ROCKS NATIONAL LAKESHORE ...... 72 PIGEON POINT ...... 13, 14, 41, 63, 67, 122, 124, 168, 179, 185, 187 PIGEON POINT QUADRANGLE ...... 122 PIGEON POINT SILLS ...... 63, 122, 168, 179, 187

250 PIGEON RIVER...... 15, 58, 66, 104, 122, 124, 140, 145, 167 PIGEON RIVER DIKES...... 58, 104, 140, 145, 167 PIGEON RIVER INTRUSIONS...... 122, 124 PIGEON RIVER SILLS ...... 58 PIKE COUNTY ...... 111, 176 PILBARA BLOCK...... 21, 65 PILLOW BASALT...... 9, 63 PILOT PLANT ...... 152 PINE BAY...... 77 PINE COUNTY ...... 104, 181 PINE CREEK INLIER ...... 65 PINE FAULT...... 24, 29, 71, 98, 99, 120, 123, 129, 130, 150, 169, 182, 183 PINE LAKE DEPOSIT...... 105 PINE LAKE EAST QUADRANGLE ...... 104 PINE MOUNTAIN ...... 42, 43 PINE MOUNTAIN QUADRANGLE ...... 43 PINE RIVER-MOUNT MOLLIE INTRUSION ...... 58, 140, 166, 167 PIPE...... 10, 17, 58, 98, 111, 112, 128, 146, 148, 163, 166 PIPELINE FLOW...... 90 PITCHBLENDE ...... 89, 91, 146 PLACERS ...... 106, 112, 154 PLAGIOCLASE ...... 6, 42, 43, 53, 57, 61, 68, 73, 86, 89, 97, 98, 103, 106, 108, 113, 115, 116, 125, 126, 130, 131, 140, 150, 154, 163, 180, 184 PLANAR BEDDING STRUCTURE ...... 168 PLANAR BEDDING STRUCTURES ...... 139, 168 PLANNING ...... 16, 17, 22, 49, 87, 163, 164, 170, 171, 173 PLANTAE...... 13, 184 PLATARSITE...... 150 PLATE TECTONICS ...... 26-29, 34, 45, 47, 52, 55, 58, 59, 61, 66, 70, 72, 75, 77-80, 83, 90, 112, 120, 127, 128, 152, 165, 166, 170, 173, 174, 178, 180, 182 PLATEAU LAVAS ...... 65 PLATINUM-GROUP ELEMENTS ...... 5, 13, 19, 21, 36, 40, 41, 53, 56, 57, 60, 61, 68, 74, 85, 94, 98, 100, 105, 109, 113, 116, 117, 121- 126, 130, 136, 137, 143, 144, 146-152, 156, 157, 161, 162, 165, 172, 175-179, 181, 184, 189 PLATINUM-GROUP METALS...... 85, 98, 126 PLATINUM-GROUP MINERALS ...... 85, 94, 117, 124, 125, 130, 147, 177, 178 PLATINUM...... 5, 9, 13, 19, 21, 36, 40, 41, 49, 53, 56, 57, 60, 61, 68, 74, 85, 94, 98, 100, 105, 109, 113, 116, 117, 121-126, 130, 136, 137, 143, 144, 146-152, 156, 157, 161, 162, 165, 172, 175-179, 181, 184, 189 PLATTEVILLE FORMATION ...... 11 PLEISTOCENE...... 7, 9, 11, 16, 25, 28, 38, 40, 44, 46, 47, 59, 65, 69, 74, 76, 78, 91, 105, 111, 118, 119, 122, 131, 132, 164, 172, 188 PLEONASTE ...... 151 PLIOCENE ...... 76 PLUME ...... 7, 13, 26, 27, 70, 78, 83, 93, 100, 127, 158, 189 PLUTONS...... 20, 35 POINTE AUX CHENES FORMATION ...... 60 POKEGAMA QUARTZITE ...... 67, 165 POLAND...... 25 POLAR WANDERING ...... 128, 145, 163 POLARITE ...... 124, 125 POLARITY...... 6, 20, 28, 32, 44, 53, 58, 61, 65, 66, 70, 84, 89, 90, 98, 99, 105, 137, 141, 145, 174 POLE POSITIONS ...... 145 POLK COUNTY ...... 38, 53, 89, 141 POLLUTION...... 52, 61, 134, 138 POLYBARIC FRACTIONATION ...... 86, 93 POLYMETALLIC DEPOSIT...... 134 POOHBAH LAKE COMPLEX ...... 15, 149 POPLAR RIVER...... 149 POPULAR AND ELEMENTARY GEOLOGY ...... 145, 165 PORCUPINE DISTRICT ...... 159 PORCUPINE MINE ...... 55, 92, 158 PORCUPINE MOUNTAIN ANTICLINE ...... 94 PORCUPINE MOUNTAINS ...... 24, 28, 35, 77, 81, 82, 94, 98, 109, 127, 141, 169, 183 PORCUPINE MOUNTAINS WILDERNESS STATE PARK ...... 94, 141 POROSITY ...... 12, 46, 69, 131, 152, 153, 155, 162, 165 PORPHYRIN...... 13 PORPHYRINS ...... 13, 111 PORPHYRY ...... 9, 10, 17, 18, 24, 36, 63, 91, 114, 134, 160, 166, 187 PORT ARTHUR...... 119, 141, 167 PORT COLDWELL ...... 5, 9, 11, 12, 15-18, 34-38, 40, 41, 44, 52, 55, 60, 61, 68, 72, 75, 77, 79, 81, 84, 85, 91, 92, 95-102, 109-111, 115, 116, 124, 125, 127, 130, 131, 136-138, 140, 148-150, 157, 158, 162, 166, 170, 171, 176-180, 183, 184 PORT MONROE...... 68

251 PORTAGE LAKE...... 2, 5, 9, 11, 14, 16, 18, 20, 21, 23-29, 35, 36, 38-40, 44, 47, 64-66, 68, 69, 71, 76, 78, 80-82, 84, 85, 87, 89-91, 94, 96-101, 109, 114, 123, 127, 128, 131-133, 135, 140, 142, 146, 153, 154, 157, 159, 165, 166, 169, 173, 175, 178, 182- 184, 186, 187 PORTAGE LAKE LAVAS ...... 100, 133, 154, 175, 183 PORTAGE LAKE VOLCANIC BASIN ...... 114 PORTAGE LAKE VOLCANICS...... 2, 5, 9, 11, 14, 16, 18, 20, 21, 23-29, 35, 36, 38-40, 44, 47, 64-66, 68, 69, 71, 76, 78, 80-82, 84, 85, 87, 89-91, 94, 96-99, 101, 109, 114, 123, 127, 128, 131-133, 135, 140, 142, 146, 153, 154, 157, 159, 165, 166, 169, 173, 175, 178, 182-184, 186, 187 PORTTIVAARA COMPLEX ...... 104 PORTUGAL ...... 147, 189 POSSIBILITIES ...... 28, 91, 154 POSTCUMULUS ...... 36 POTASSIUM FELDSPAR...... 52, 60, 61, 73, 102, 108, 125, 126 POTASSIUM-ARGON...... 30, 34, 52, 59, 60, 72, 85, 86, 101, 138, 145, 148, 149, 174, 177, 188 POTATO RIVER INTRUSION ...... 93 POTENTIAL FIELD...... 58, 105 POTSDAM SANDSTONE ...... 31, 159 POWDER MILL GROUP...... 6, 44, 68, 78, 82, 127, 134, 166, 169 POWERLINE GABBRO ...... 113, 114, 133, 156, 165 PRAIRIE CREEK LAMPROITE...... 111 PRAIRIE DU CHIEN FORMATION...... 68, 78 PRAIRIE DU CHIEN GROUP...... 11, 126 PRAIRIE LAKE CARBONATITE COMPLEX ...... 15, 21, 35, 36, 59, 72, 111, 139, 148-151, 177 PRC ...... 46, 97, 166 PRECAMBRIAN ...... 2, 5, 7, 8, 11, 13, 17, 18, 20, 26-28, 30, 32-35, 37, 38, 40-50, 56, 58, 60, 63, 67, 69-71, 76, 77, 79, 80, 83, 84, 87-92, 95, 98, 99, 104-115, 118-121, 123, 127, 128, 131-134, 137, 139, 140, 145, 149, 152-154, 158-161, 163, 165, 168-171, 173, 174, 176, 178-180, 183, 187-190 PRECIOUS METAL ANALYSES ...... 7, 16, 64, 136, 156, 161, 184 PRECIOUS METALS...... 18, 19, 41, 60, 68, 74, 85, 94, 121, 122, 124, 132, 152, 156, 157, 165, 172, 176, 184 PRECIPITATION...... 41, 107, 152, 169, 177 PREHNITE-PUMPELLYITE FACIES ...... 20, 23, 72, 87, 99, 110, 154 PREHNITE ...... 20, 21, 23, 65, 66, 72, 82, 87, 99, 110, 117, 154 PREISSAC DIKES ...... 158 PRESQUE ISLE ...... 72, 123, 152 PRESQUE ISLE GRANITE...... 152 PRESQUE ISLE STATE PARK...... 123 PRESSURE...... 68, 95, 101, 136, 155 PRICE COUNTY ...... 45, 123 PRINCE MINE ...... 161 PRISTANE ...... 13, 15, 49, 77, 78, 107, 111 PRITCHARD FORMATION...... 45 PROBLEMATIC...... 88 PROCESS METALLURGY...... 174 PROCESSES...... 11, 12, 14, 15, 22-26, 31, 36-38, 48, 50, 51, 60, 63, 66, 67, 79, 93, 98, 102, 103, 110, 113, 115, 127, 130-133, 135, 151, 152, 154, 157, 168, 169, 179, 183 PROCESSING...... 1, 37, 61, 68, 74, 82-85, 88, 92, 96, 97, 105, 113, 115, 125, 138, 146-148, 150, 152, 157, 162, 165, 168, 174, 175, 181, 184 PRODUCTION ...... 11, 21, 23, 68, 73, 113, 118, 125, 133, 141, 162, 182, 184 PROFILES...... 10, 14, 17, 28, 62, 90, 102, 123, 142, 157, 161, 169, 186, 187 PROPERTIES ...... 6, 13, 14, 20, 24, 51, 61, 63, 70, 100, 131, 147, 175, 189 PROSPECTING ...... 10, 18, 25, 34, 66, 81, 90, 105, 112, 130, 131, 141, 147, 153, 159-162 PROSSER MEMBER...... 11 PROTEROZOIC..... 2, 5-9, 11-22, 26-33, 35-40, 42, 43, 45-48, 50-62, 64-70, 72-96, 98, 100-112, 114-128, 130-132, 134-137, 139-144, 146, 148-177, 179-190 PROTISTA ...... 184 PROTOSPHAERIDIUM...... 165 PROVENANCE ...... 75, 86, 89, 100, 107, 111, 115, 119, 131, 171, 187 PROVIDENCIA ...... 181 PUBLIC...... 34, 49 PUCKWUNGE ...... 37, 46, 47, 62, 63, 65-67, 107, 126, 131, 154, 165, 184, 185 PUCKWUNGE FORMATION ...... 37, 46, 62, 65, 67, 107, 126, 131, 154, 165, 184, 185 PUERTO RICO...... 141 PUKASKWA DIKES ...... 66, 70, 188 PULASKI COUNTY ...... 159 PUMICE ...... 65 PUMPELLYITE ...... 20, 21, 23, 65, 72, 87, 99, 110, 154 PUMPELLYITIZATION ...... 153 PUMPING...... 52 PURCELL SUPERGROUP ...... 65 PURITAN QUARTZ MONZONITE ...... 160

252 PUSAKAWA DIKES ...... 179 PYARGYYRITE ...... 55 PYRITE...... 6, 7, 21, 23, 25, 36, 38, 39, 42, 51, 53, 55, 57, 58, 61, 74, 77, 92, 103, 109, 110, 116, 121, 124, 125, 130, 140, 141, 143, 145, 153, 165, 175, 182, 183, 187 PYROBITUMEN ...... 107 PYROCHLORE...... 177 PYROCLASTIC ...... 65, 85, 111, 135, 176 PYROCLASTIC FLOW...... 65 PYROLUSITE...... 76, 124, 167 PYROLYSIS...... 83, 137 PYROMETALLURGY...... 174 PYROPE ...... 25 PYROXENE ...... 6, 10, 18, 30, 57, 61, 65, 73, 88, 91, 93, 97, 98, 103, 108, 115, 116, 124-126, 146, 149, 163, 172, 176, 180 PYROXENE HORNFELS ...... 18, 65, 91, 172, 176 PYROXENE HORNFELS FACIES...... 65, 91, 172 PYROXENITE ...... 163 PYRRHOTITE ...... 6, 7, 12, 13, 19-21, 35, 36, 39, 42, 53, 57, 61, 69, 73, 74, 85, 97, 103, 106, 114, 116, 117, 121, 122, 130, 140, 142-144, 147, 154, 156, 157, 161, 165, 175, 180, 189

(Q)

QUARRIES...... 118, 146 QUARRY ...... 38, 74, 90, 98, 118, 146, 182 QUARTZ ...... 9, 18, 21, 24, 35, 64, 76, 80, 84, 92, 94, 124, 131, 134, 136, 152, 153, 160, 167 QUARTZ LATITE ...... 94 QUARTZ PORPHYRY ...... 9, 24, 134 QUARTZITE ...... 31, 35, 39, 46-48, 66, 67, 76, 83, 91, 95, 107, 119, 120, 123, 129, 131, 154, 159-161, 165, 167, 185, 188 QUATERNARY ...... 9, 11, 16, 18, 22, 25, 28, 33, 35, 38, 40, 44, 46, 59, 65, 74, 76, 91, 98, 111, 119, 122, 132, 164, 172, 188 QUEBEC...... 9, 14, 17, 30, 36, 37, 48, 52, 59, 65, 76, 80, 82, 109, 134, 189 QUEBEC HARBOUR MEMBER ...... 9, 134 QUEBEC MINE ...... 9, 30, 48 QUEBEC MINE MEMBER...... 9 QUEENSLAND ...... 189 QUETICO FAULT ...... 33 QUETICO SHEET ...... 167 QUETICO SUBPROVINCE...... 32, 34, 55, 121, 184 QUIET ZONE...... 58 QUINCY MINE...... 20, 21, 23, 24, 96, 162, 182 QUIRKE LAKE GROUP ...... 55

(R)

RABBIT MOUNTAIN MINE ...... 55, 92, 167 RACKLAN OROGENY...... 65 RADIOACTIVE ...... 15, 148, 162, 177 RADIOGENIC ISOTOPES...... 1, 27, 44, 47, 55, 57, 72, 75, 92, 94, 97, 102, 104, 127, 133, 147, 155, 158, 159, 170, 173, 174, 187, 189 RADIOMETRIC SURVEY ...... 10 RADIUM...... 100 RAILROAD TROCTOLITE ...... 165 RAINBOW LAKE WILDERNESS AREA ...... 27, 28 RAINY LAKE...... 33, 67 RAINY LAKE-SEINE RIVER FAULT...... 33 RAINY LOBE...... 38 RAINY RIVER DISTRICT...... 167 RAMAN MICROPROBE...... 35, 135 RAMAN MICROSPECTROSCOPY...... 155 RAMSEY COUNTY ...... 119, 159 RANWICK MINE...... 91 RARE-EARTH CARBONATES ...... 51 RARE-EARTH ELEMENTS ...... 27, 31, 36, 44, 52, 56, 57, 61, 64, 66, 68, 74, 85, 86, 93, 97, 106, 110, 116, 121, 125, 126, 133, 135, 141, 148, 155, 156, 158, 161, 162, 166, 176, 184 RATE...... 27, 133 RATIOS...... 15, 30, 35, 77, 78, 83, 89, 127, 143, 181 REACTION POINTS ...... 13 REACTIVATION...... 5, 22, 27, 33, 35, 36, 95, 109, 142, 188, 189 REARING POND INTRUSION ...... 132 RECENT ...... 23, 33, 58, 61, 70, 90, 134, 162, 169, 178, 181 RECLAMATION ...... 22, 49, 96, 132, 165

253 RECONSTRUCTION...... 77 RED-BEDS ...... 11, 24, 25, 36, 45, 50, 55, 68, 76, 78, 81, 92, 94, 108, 111, 119, 131, 161, 173, 178 RED...... 8, 11, 24, 25, 36, 44, 45, 50, 55, 61, 63, 68, 69, 76, 78, 81, 83, 87, 92, 94, 104, 108, 110, 111, 119, 124, 129, 131, 158, 161, 164, 169, 173, 178, 183-186 RED CLASTIC SERIES...... 92, 164, 184 RED CLASTICS...... 8, 11, 69, 87, 94, 110, 111, 158, 164, 185, 186 RED CLIFF...... 63 RED CLIFF BASALTS...... 63 RED FACIES...... 183 RED MESA DIATREME...... 111 RED MESA KIMBERLITE ...... 111 RED PINE SHALE FORMATION...... 83 RED ROCK...... 63, 104, 169 RED ROCK FAULT...... 104 RED ROCK RHYOLITE FLOW ...... 63 RED SEA...... 61, 129 RED SEA RIFT...... 129 RED SUCKER COVE...... 183 REDOX...... 25 REDSTONE MINE...... 25 REDUCTION ...... 22, 25, 161 REDWOOD COUNTY ...... 15, 16, 60 REDWOOD RIVER ...... 48 REE ...... 27, 31, 36, 44, 52, 56, 57, 61, 64, 66, 68, 74, 85, 86, 93, 97, 106, 110, 116, 121, 125, 126, 133, 135, 141, 148, 155, 156, 158, 161, 162, 166, 176, 184 REELFOOT RIFT ...... 90 REEQUILIBRATION...... 31, 36, 66, 73 REFINING...... 138, 165 REFLECTION...... 5-7, 12, 14, 15, 21, 25-28, 33, 36, 40, 42, 45, 51, 54, 58, 63, 73, 75, 78-80, 82, 83, 86, 90, 97, 105, 109, 112-114, 119, 123, 124, 129, 146, 150, 151, 155, 157, 158, 161, 169-171, 181, 186, 189 REFRACTION ...... 10, 13, 27, 31, 36, 51, 68-71, 87, 97, 102, 111, 118, 119, 129, 142, 151, 155, 158, 164, 169, 171, 177, 181 REGIONAL ...... 5, 8-10, 15, 22, 24, 28, 30, 32, 34, 36-40, 46, 49, 53, 59, 61, 63, 70, 77-81, 83, 85, 88, 91, 92, 94, 96, 99, 100, 102, 105, 110, 115, 121, 122, 127, 129, 131, 132, 136-138, 141, 142, 147, 149-152, 159, 162, 164, 165, 169, 171, 173, 174, 176, 179-182, 187, 188 REGIONAL METAMORPHISM ...... 9, 105 REGRESSION...... 84 REINDEER ZONE ...... 98 RELATION...... 10, 12, 13, 20, 22, 90, 119, 146, 152, 153, 187 REMAGNETIZATION...... 70, 99, 134, 173 REMANENCE ...... 16, 20, 50 REMANENT MAGNETISM ...... 20, 173 REMANENT MAGNETIZATION...... 50, 70, 76, 108, 173 REMOBILIZATION...... 144, 172 REMOTE SENSING...... 5, 10, 74 RENQUI OIL FIELD ...... 45 REPLACEMENT ...... 3, 25, 76, 140, 145 REPROCESSING...... 150, 151, 189 REPUBLIC ...... 44-46, 65, 97, 166 RESERVATION RIVER DIABASE COMPLEX...... 63 RESERVE ESTIMATION ...... 51 RESERVE HORNFELS ...... 172 RESERVE MINING COMPANY ...... 18, 19 RESERVOIR...... 43, 45, 130, 131, 134, 156 RESERVOIRS...... 39, 131 RESISTIVITY...... 73, 81, 101, 112, 142, 176, 181, 188, 189 RESISTIVITY SURVEY ...... 81, 112, 181 RESOURCE ...... 9, 22, 28, 43, 48, 94, 133, 134, 136, 165, 166, 179 RESOURCE ESTIMATION...... 134, 179 RESOURCE POTENTIAL...... 28, 133, 165 RESOURCES ...... 1, 4, 6-9, 17, 19, 22, 23, 26-28, 41, 45, 48, 49, 51, 54, 56, 57, 59, 64, 67, 72-74, 76, 79, 80, 84, 85, 92, 94, 96, 97, 100, 102, 105, 109-111, 115, 118, 121, 122, 127-129, 131, 134-136, 138, 141, 147, 151, 153, 155-157, 159-161, 165, 172- 175, 186, 189 RETROGRADE ...... 92, 139 RETROGRADE METAMORPHISM...... 92 REVERSALS ...... 69, 70, 106, 134, 146, 175 REVERSE MAGNETIZATION...... 44, 91, 134, 145, 175 REVERSE POLARITY...... 28, 44, 53, 58, 61, 65, 66, 70, 84, 89, 98, 99, 105, 137, 141, 174 REVETT FORMATION ...... 25 RHENIUM...... 13, 30, 116 RHEOIGNIMBRITE...... 53, 65, 66

254 RHEOMORPHIC BRECCIA...... 176 RHODE ISLAND ...... 189 RHODIUM ...... 165 RHODOCHROSITE ...... 55 RHODOCROSITE ...... 124, 167 RHYOLITE ...... 5, 8, 9, 12, 17, 20, 34, 44, 63-66, 75, 81, 85, 94, 96, 98, 126, 127, 140, 145, 151, 166, 167, 174 RHYOLITES ...... 8, 53, 63, 66, 126, 127, 140, 182 RHYTHMIC LAYERING ...... 164 RICE COUNTY ...... 74, 97, 118 RICE LAKE...... 21, 22 RICHLAND COUNTY ...... 84 RICHMOND GNEISS ...... 121 RIDGES...... 188 RIFT...... 1, 1, 2, 4-9, 11, 13-16, 20, 22, 25-29, 31, 33, 40, 41, 43-47, 50, 51, 55, 56, 61, 64-66, 68, 70, 71, 74, 75, 77-79, 83-86, 89-93, 95, 97, 99, 104-106, 108-114, 118, 120, 123, 127-133, 135-137, 139, 149-152, 154-158, 164, 166, 168-171, 173, 174, 179- 181, 183, 186-188, 190 RIFT BASIN...... 8, 11, 20, 25, 28, 43, 46, 47, 66, 78, 97, 99, 105, 114, 118, 123, 127, 131, 157, 164, 169, 186-188, 190 RIFTING...... 5, 8, 11, 13, 16, 25-29, 32, 46-48, 52, 53, 55, 58, 61, 64, 66, 70, 72, 74, 78-80, 83, 90, 93, 106, 112, 114, 120, 123, 127, 128, 135, 152, 164, 166, 174, 178-180, 182, 186, 189 RIFTS...... 11, 25, 58, 65, 70, 72, 78, 79, 90, 112, 128, 152, 179 RILEY COUNTY ...... 16, 104, 111 RING DIKE...... 59, 167 RIO GRANDE RIFT ...... 44, 90 RIPHEAN ...... 45, 65 RIPPLE MARKS...... 71, 107 RIVER FALLS BASIN...... 175 RIVER FALLS SYNCLINE...... 7, 45, 163 RIVERS...... 50, 81 ROASTING...... 68, 88 ROCK MECHANICS ...... 72, 91, 150 ROCK QUALITY DATA ...... 165 ROCKBRIDGE COUNTY ...... 111 ROOF ZONE...... 126 ROSSPORT FORMATION ...... 36 ROTATION...... 158 ROUGH CREEK-SHAWNEETOWN FAULT SYSTEM ...... 164 ROUND LAKE INTRUSION ...... 122, 145, 165, 190 ROVE FORMATION...... 17, 29, 32, 36, 39, 55, 58, 60, 62, 66-68, 87, 92, 95, 106, 107, 110, 114, 119, 120, 124, 126, 137, 140, 141, 149, 154, 158, 161, 166, 167, 179, 180 ROVE LAKE...... 62 RQD...... 165 RUBIDIUM...... 12, 15, 17, 18, 21, 29, 34, 35, 44, 52, 53, 60, 72, 73, 97-99, 117, 130, 132, 133, 137-139, 146, 147, 155, 173, 174, 177 RUDDERHEAD POINT ...... 59 RUM RIVER...... 69 RUNOFF ...... 96 RUSH COUNTY ...... 32 RUSK COUNTY ...... 99, 123 RUSSIA...... 13, 27, 45, 46, 64, 97, 100, 104, 125, 141, 148, 179, 181 RUTILE...... 189 RYAN TOWNSHIP ...... 10, 58

(S)

SACRED HEART GRANITE...... 60 SAFFLORITE...... 55, 117, 154 SAGANAGA ...... 60, 67, 68, 72, 95, 114 SAGANAGA LAKE ...... 67, 72 SAGANAGA TONALITE ...... 114 SAINT CROIX HORST ...... 6, 7, 13, 27, 32, 33, 39, 45, 62, 74, 99, 111, 118, 120, 123, 129, 131, 136, 141, 169, 174, 175 SAINT CROIX SERIES...... 40 SAINT IGNACE DOLOMITE ...... 60 SAINT JOSEPH ISLAND...... 147 SALINA FORMATION ...... 78 SALINE...... 90, 121 SALINITY...... 52, 109, 128, 135, 136, 142, 158 SALT WATER INTRUSION...... 52, 139 SALTER ISLAND ...... 167 SAMARIUM-NEODYMIUM ...... 14, 44, 47, 57, 72, 127, 130, 133, 139 SAMPLING...... 10, 25, 139, 146, 161, 188

255 SAN JUAN MOUNTAINS ...... 168 SAN JUAN VOLCANIC FIELD ...... 167, 168 SAND...... 8, 9, 47, 76, 103, 112 SAND RIVER MINE ...... 103 SANDRA TOWNSHIP ...... 103 SANDSTONE ...... 5-13, 16, 17, 20-25, 27-31, 34, 35, 37-41, 44-47, 50-53, 55, 56, 58-60, 62-72, 74-79, 81, 82, 84-89, 91, 93, 96-100, 104, 105, 107-109, 111, 118-120, 122-126, 128-132, 136, 139, 141, 142, 145-147, 150, 152-155, 157-171, 173, 175, 178, 182-186, 188, 189 SANFORD LAKE...... 77 SANTA BARBARA COUNTY ...... 159 SAO FRANCISCO CRATON ...... 65 SARTELL GNEISS ...... 121 SASKATCHEWAN ...... 60, 80, 98 SATURATED-HYDROCARBONS ...... 80 SAUK COUNTY ...... 159 SAULT STE. MARIE...... 11, 12, 20, 25, 39, 52, 55, 58, 59, 63, 69, 71, 76, 77, 79, 88, 91, 103, 108, 128, 132, 136, 140, 146, 147, 169, 177, 186 SAUSSURITIZATION...... 98 SAWBILL CAMP...... 42 SAWTOOTH RANGE ...... 65 SAWYER COUNTY ...... 32, 45, 165, 190 SCALES CREEK FLOW ...... 11, 66, 154 SCALES CREEK OPHITE...... 182 SCHACHT SHAFT...... 183 SCHAFER BAY MEMBER...... 9 SCHIST...... 62, 159 SCHOOLCRAFT COUNTY ...... 30 SCHREIBER-HEMLO DISTRICT...... 73, 162 SCHROEDER...... 63, 65, 114 SCHROEDER BASALTS...... 65, 114 SCHRYBURT LAKE CARBONATITE COMPLEX ...... 149 SCOTLAND ...... 65, 159 SCOTT COUNTY ...... 161 SCRAMENTO MOUNTAINS ...... 5 SCRANTON SILVER MINE...... 183 SCRATON GRAVITY HIGH...... 90 SE/S...... 48, 143 SEA CAVES...... 49 SEABROOK LAKE ...... 15, 59, 116, 134, 148, 149, 167 SEABROOK LAKE CARBONATITE COMPLEX ...... 15, 59, 116, 134, 148, 149 SEAGULL LAKE...... 114 SEAWATER...... 163 SEA-FLOOR SPREADING...... 127 SECTION 17...... 74, 156 SEDIMENT...... 9, 15, 21, 25, 28, 36, 37, 49, 81, 94, 105, 107, 108, 110-112, 154, 162, 173, 181 SEDIMENT LOADING ...... 28 SEDIMENTARY...... 5-14, 16-22, 24-56, 58-60, 62, 63, 66-115, 117-126, 128-137, 139-147, 149-175, 178, 180-189 SEDIMENTARY BASINS...... 109, 133 SEDIMENTARY PETROLOGY...... 71, 101, 119, 158, 181 SEDIMENTARY PROCESSES...... 168 SEDIMENTARY ROCKS ...... 14, 16, 22, 41, 86, 89, 99, 102, 111, 120, 121, 131, 134, 137, 154, 173, 187 SEDIMENTARY STRUCTURES ...... 37, 41, 49, 50, 55, 71, 86, 94, 107, 119, 125, 129, 139, 162, 166-168, 170, 171, 187 SEDIMENTATION...... 1, 5, 11, 22, 24, 27, 29, 37, 41, 43, 45, 46, 50, 55, 58, 59, 69, 71, 79, 89, 107, 111, 112, 119, 120, 123, 125, 130, 131, 166, 168, 170, 171, 181, 184, 187 SEDIMENTOLOGY...... 5, 11, 22, 24, 37, 41, 50, 52, 61, 74, 79, 81, 83, 84, 96, 112, 115, 119, 125, 131, 151, 163, 166, 185 SEDIMENTS...... 5-14, 16, 18, 20-31, 33-41, 43-47, 49-53, 55, 56, 58-96, 98-102, 104-113, 115, 118-121, 123-131, 133, 134, 136, 137, 139- 142, 145-147, 150, 152, 154, 156, 158, 160-162, 164-171, 173-176, 178, 181-190 SEDIMENT-HOSTED ...... 21, 25, 37, 81, 94, 107, 108, 112, 154 SEISMIC...... 5-7, 10, 12-15, 17, 21, 22, 25-28, 31, 33, 36, 40, 42, 45, 46, 51, 54, 58, 62, 63, 65, 68-71, 73, 75, 78-80, 82, 83, 86, 87, 90, 91, 93, 94, 97, 100, 102, 104, 105, 109, 111-114, 118, 119, 123, 124, 127, 129, 141, 142, 146, 150, 151, 155-158, 161, 164, 168-171, 173-175, 177, 181, 186, 189, 190 SEISMIC FLUX ...... 93 SEISMIC LINE 15 ...... 105 SEISMIC LINE 25 ...... 105 SEISMIC LINE 26 ...... 105 SEISMIC LINE 36 ...... 105 SEISMIC LINE A...... 31, 73, 83, 86, 105, 112, 114, 119, 157, 158, 168, 169, 171, 181 SEISMIC LINE B ...... 73, 83, 105, 168 SEISMIC LINE C ...... 27, 73, 83, 114, 123, 157, 168, 169, 174 SEISMIC LINE F ...... 73, 83, 104, 105, 150, 151, 168, 169

256 SEISMIC LINE G...... 105, 168, 169 SEISMIC LINE H...... 28 SEISMIC LINE J...... 26, 40, 42, 51, 169 SEISMIC SURVEYS ...... 87 SEISMIC TOMOGRAPHY ...... 90 SEISMIC VELOCITY...... 118 SEISMICITY...... 8, 33 SEISMOLOGY...... 91, 102, 173 SEISMOMETER ...... 112 SEISMOTECTONICS...... 173 SELENIUM ...... 48, 91, 117, 119, 121, 130, 143, 146 SENECA MINE...... 24, 187 SENEGAL...... 189 SERICITE ...... 23 SERICITIZATION ...... 154 SERPENTINE...... 69, 74, 85, 117, 122, 136, 144, 150, 181, 189 SERPENTINIZATION...... 41, 74, 98, 117, 144, 150 SEVEN MILE MOUND DEPOSIT ...... 105 SEVEN MILE MOUND MINE ...... 105 SHADED RELIEF ...... 32, 34, 91 SHAFT...... 66, 108, 147, 161, 181, 183 SHAKOPEE FORMATION ...... 11 SHALE...... 2, 7, 10, 11, 13, 15, 16, 21-26, 29-31, 34, 37, 38, 41, 43, 45-47, 49-53, 56-58, 71-74, 76-86, 88-91, 96-98, 107-113, 116, 118, 123, 124, 126, 128-131, 133, 136, 137, 139-141, 145, 146, 150, 152, 154, 161, 165-167, 169-171, 173, 175, 181-184, 186, 187 SHALLOW ...... 10, 33, 71, 107 SHANDONG PROVINCE ...... 166 SHEAR ...... 9, 33, 53, 55, 64, 91, 112, 152, 158, 189 SHEAR WAVE...... 112, 158 SHEAR ZONES ...... 9, 33, 53, 55, 64, 152, 158 SHEETFLOODS ...... 166 SHEET-SILICATES ...... 73 SHENANDOAH BASIN ...... 8 SHENANGO TOWNSHIP ALKALIC COMPLEX ...... 15, 149 SHERBERNE COUNTY ...... 99 SHERBURNE COUNTY ...... 69, 118 SHERMAN HILL...... 109 SHERRY LAKE QUADRANGLE ...... 104 SHESHEEB BAY...... 176 SHEXIAN KIMBERLITE ...... 166 SHIELD VOLCANO...... 182 SHOEPACK LAKE INCLUSION-RICH DIORITE...... 18, 114 SHONKINITE ...... 44 SHOOFLY LAKE ...... 95 SHORELINES...... 126 SHUNIAH MINE ...... 55, 158 SIBERIA ...... 13, 27, 45, 46, 64, 100, 125, 141, 148, 179, 181 SIBERIAN CRATON...... 65 SIBERIAN PLATFORM ...... 45, 141 SIBERIAN TRAPS...... 27, 64, 100, 141 SIBLEY COUNTY ...... 161, 163 SIBLEY GROUP...... 29, 36, 43, 55, 65, 69, 130, 131, 137, 166, 167 SIBLEY PENINSULA ...... 58, 154, 188 SICHUAN BASIN ...... 45, 46 SICHUAN PROVINCE ...... 45 SICILY...... 159 SIDE LAKE QUADRANGLE ...... 104 SIDE SCAN SONAR ...... 16 SIDERITE...... 91 SIEGENITE...... 125 SIEMENS CREEK FORMATION...... 82 SIEMENS CREEK VOLCANICS ...... 29 SIERRA MADRE ORIENTAL...... 108 SILICATE MELT...... 145 SILICATES...... 68, 73, 136, 145, 150, 158, 165, 180 SILLS...... 2, 9, 17, 18, 23, 32, 35, 36, 39, 44, 51-53, 55, 57, 58, 60, 63-65, 67, 69, 72, 76, 84, 86, 88, 92, 96, 103, 104, 106, 110, 113, 114, 119, 120, 122, 124, 126, 129, 130, 133, 136, 137, 139, 140, 145, 151, 153, 156, 158, 161, 166, 168, 169, 179, 180, 184, 185, 187 SILTSTONE ...... 13, 53, 71, 72, 74, 84, 94, 126, 152, 170, 178, 183 SILURIAN...... 47, 76, 78, 91, 99, 112, 169

257 SILVER...... 9, 13, 18, 21, 23, 25, 27, 31, 34, 36, 39, 48, 51, 55-57, 63, 64, 67, 68, 71, 74, 79, 80, 82, 84, 86, 88, 92, 94, 102, 105, 106, 109, 110, 112-114, 117, 120-122, 124, 125, 128, 130, 131, 136, 139, 140, 142, 145, 146, 152, 154, 157-159, 161, 165- 167, 172, 174, 183, 184 SILVER BAY ...... 31, 63, 64, 113, 114, 157 SILVER BAY INTRUSIONS...... 31, 114 SILVER BAY QUADRANGLE ...... 113 SILVER CREEK CLIFF...... 139 SILVER CREEK MINE ...... 55 SILVER ISLAND...... 18, 112 SILVER ISLET...... 55, 82, 92, 124, 154, 167 SILVER ISLET MINE ...... 55, 92, 124, 154, 167 SILVER LAKE QUADRANGLE ...... 18 SILVER MOUNTAIN ...... 27, 55, 92, 112, 124 SILVER MOUNTAIN MINE ...... 55, 92 SILVER ORES ...... 112 SILVERDALE FAULT...... 152 SILVERTON CALDERA...... 168 SIMPSON ISLAND ...... 167 SINIAN ...... 45 SIOUX COUNTY ...... 188 SIOUX FORMATION ...... 67 SIRTE RIFT BASIN...... 97 SKAERGAARD INTRUSION ...... 21, 104, 116, 180 SKI TRAIL FLOW ...... 90 SKIBO...... 155, 156 SKILLOGALEE ...... 137 SKUTTERUDITE ...... 55 SLATE ISLANDS ...... 16, 69-71, 135, 146, 148, 149, 166 SLAVE PROVINCE...... 52 SLICKENSIDE...... 186 SLICKENSIDES...... 186 SLOAN DIATREME ...... 112 SLOAN KIMBERLITE ...... 112 SLOVENIA...... 92 SMECTITE ...... 109, 139 SMELTING ...... 37, 61, 84, 92, 125, 138, 157, 165, 184 SMITHSONITE...... 55 SMOKEY QUARTZ ...... 80 SNAKE ANOMALY ...... 174 SNAKE RIVER ...... 66, 69 SNOWBANK ...... 62, 73, 95, 113, 115 SNOWBANK LAKE ...... 62, 113, 115 SNOWBANK LAKE QUADRANGLE ...... 113, 115 SO2 ...... 169 SOIL...... 7, 41, 101, 110, 111, 139, 163, 176, 188 SOIL GEOCHEMISTRY ...... 110, 111, 163, 176, 188 SOILS ...... 10, 41, 89, 136, 165, 189 SOLAR CHURCH FORMATION...... 45, 119 SOLID SOLUTION...... 130 SOLOR CHURCH FORMATION...... 39, 43, 74, 94, 119, 120, 131, 158 SOLUTION MINING...... 87 SOLUTIONS...... 23, 25, 30, 39, 49, 61, 92, 98, 145, 150, 159, 161, 181, 182, 189 SONAR ...... 16 SONIC LOG ...... 90 SONJU LAKE...... 113, 114, 133, 145, 164 SONJU LAKE INTRUSION...... 113, 114, 133, 145, 164 SOPCHEITE ...... 61, 124, 125, 150 SOUDAN ...... 15, 35, 67, 68, 85, 95, 137, 173 SOUDAN IRON-FORMATION ...... 15, 67, 68, 85, 95, 137 SOUDAN MINE ...... 137 SOURCE...... 6, 27, 43, 52, 74, 77, 83, 84, 107, 110, 113, 117, 126, 132-134, 144, 152, 166, 178 SOURCE ROCK...... 74, 84, 110, 133, 134 SOUTH AFRICA ...... 13, 21, 27, 30, 44, 48, 64, 65, 100, 104, 108, 125, 135, 137, 159, 168, 189 SOUTH AMERICA...... 64, 100, 159, 161, 189 SOUTH AUSTRALIA ...... 15, 45, 189 SOUTH CAROLINA ...... 189 SOUTH COMPLEX AREA ...... 103, 119, 156 SOUTH DAKOTA ...... 16, 17, 60, 159, 160, 174, 189 SOUTH FILSON CREEK...... 53, 74, 94, 110, 155, 156 SOUTH FOUL LAKE QUADRANGLE ...... 104

258 SOUTH KAWISHIWI...... 7, 20, 33, 35, 38, 41, 48, 49, 53, 54, 56, 57, 62, 66, 69, 74, 81, 84, 85, 94, 97, 100, 104, 106, 109, 110, 116-120, 122, 124, 135, 136, 138, 146-148, 153, 155-157, 163, 165, 175, 180, 181, 189 SOUTH KAWISHIWI INTRUSION ...... 7, 20, 33, 35, 38, 41, 48, 49, 53, 54, 56, 57, 62, 66, 69, 74, 81, 84, 85, 94, 97, 100, 104, 106, 109, 110, 116-120, 122, 124, 135, 136, 138, 146-148, 153, 155-157, 163, 165, 175, 180, 181, 189 SOUTH KAWISHIWI RIVER...... 109 SOUTH KAWISHIWI TROCTOLITE SERIES ...... 156 SOUTH LAKE ...... 88, 119, 120, 126 SOUTH LAKE QUADRANGLE ...... 88, 119, 120, 126 SOUTH RANGE ...... 11, 34, 38, 46, 69, 75, 81, 87, 111, 112, 132, 152, 173, 182, 183 SOUTH RANGE LAVA SERIES ...... 11, 112 SOUTH RANGE QUADRANGLE ...... 46, 87, 183 SOUTH RANGE QUARRY ...... 38, 182 SOUTH SHORE MEMBER...... 9, 134 SOUTHERN OKLAHOMA AULACOGEN ...... 90 SOUTHERN PROVINCE...... 29, 52 SOUTHWEST EXTENSION...... 74, 122, 136, 157 SOUTHWEST MINE ...... 71 SPANISH RIVER CARBONATITE COMPLEX ...... 15, 149, 177 SPAR ISLAND MINE ...... 161 SPAR LAKE MINE ...... 25 SPECIFIC GRAVITY...... 6, 38, 53 SPECTRA ...... 78, 80, 147 SPECTRAL REFLECTANCE ...... 5, 74 SPECTRORADIOMETER ...... 74 SPECTROSCOPY...... 49, 155 SPECULAR HEMATITE...... 38 SPECULARITE...... 23 SPERRYLITE...... 61, 85, 117, 124, 125, 130, 147, 150 SPHALERITE...... 6, 20, 21, 25, 36, 51, 53, 55, 57, 58, 61, 91, 92, 97, 103, 109, 121, 124, 125, 140, 145, 154, 157, 165, 167, 180 SPHENE ...... 38, 72, 90, 108 SPILITE...... 108, 162 SPINEL ...... 10, 21, 36, 41, 53, 97, 103, 113, 115, 117, 122, 126, 138, 143, 145, 151, 157, 165, 175, 176 SPITS...... 18 SPLIT ROCK LIGHTHOUSE STATE PARK ...... 65 SPLIT ROCK POINT...... 113 SPLIT ROCK POINT NE QUADRANGLE ...... 113 SPLIT ROCK RIVER...... 48, 64 SPOON LAKE ...... 54 SPORES...... 118 SPOROMORPH ...... 118 SPRING LAKE FAULT...... 91 SPRINGFIELD ...... 74 SPRINGPOLE LAKE...... 149 SPRUCE BRECCIA ...... 175 SPRUCE ROAD ...... 7, 33, 35, 38, 48, 69, 74, 84, 94, 97, 100, 110, 117, 122, 135, 146, 155, 156, 165, 175, 180, 181 SQUAW BAY ...... 58 SR...... 15, 17, 30, 34, 35, 47, 52, 72, 97, 121, 127, 130, 132, 133, 137, 138, 146, 147, 173, 187 SR/RB ...... 30 SREDNE-RUSSKY...... 65 SRI LANKA ...... 189 ST. AMOUR NO. 1-29R...... 9 ST. CLOUD...... 74, 104 ST. CLOUD QUADRANGLE ...... 104 ST. CROIX COUNTY ...... 45, 69 ST. CROIX FALLS...... 38, 53, 89 ST. CROIX RIVER...... 16, 30, 31, 39, 69, 84 ST. CROIX RIVER VALLEY ...... 30 ST. FRANCOIS COUNTY ...... 112 ST. FRANCOIS MOUNTAINS ...... 17, 151, 168, 174, 189 ST. IGNACE COMPLEX ...... 59, 166, 167 ST. IGNACE FORMATION ...... 167 ST. IGNACE ISLAND ...... 59, 100, 166, 167, 173 ST. LAWRENCE FORMATION...... 11, 16, 154, 163, 164 ST. LOUIS CONGLOMERATE ...... 182 ST. LOUIS COUNTY ...... 5-9, 13, 15, 18-22, 24, 26, 30-35, 37, 38, 41, 43, 48, 49, 52, 53, 55-57, 59, 60, 62-69, 72-74, 76, 80, 81, 83-89, 91-94, 96, 98-101, 103-107, 111, 113-115, 117-122, 124-127, 130-132, 134-137, 141-148, 150-153, 155-157, 159, 160, 164-169, 171-174, 176, 178, 181, 185, 188, 189 ST. LOUIS MINE...... 81 ST. LOUIS RIVER ...... 48, 69, 111 ST. MICHAEL'S SILL ...... 65

259 ST. PETER SANDSTONE ...... 11, 78, 154, 159 STABLE ISOTOPES...... 97, 130 STANNIDES ...... 130 STATE LINE DISTRICT...... 112 STATE OF CHIHUAHUA ...... 92 STATE-BEAVER ISLAND NO. 1 ...... 55 STATISTICS...... 128 STE. GENEVIEVE COUNTY ...... 112 STEARNS COUNTY ...... 58, 69, 74, 104, 121, 163 STEPHANITE ...... 55 STERANES...... 78, 139 STEWARTS RIVER...... 48 STEWARTVILLE MEMBER ...... 11 STILBITE ...... 23 STILLWATER COMPLEX ...... 17, 21, 40, 76, 104, 126, 140 STINGY LAKE QUADRANGLE ...... 104 STOBIE MINE ...... 91 STOCKDALE KIMBERLITE ...... 112 STOCKDALE PIPE ...... 112 STORAGE...... 11 STORMBERG LAVAS ...... 44 STRAIN...... 10, 40, 98, 109, 177 STRATABOUND ...... 13, 20, 22, 34, 49, 57, 71, 74, 82, 123, 130, 142, 183 STRATEGIC METALS ...... 178 STRATEGIC MINERALS ...... 26 STRATFORD BASIN...... 8 STRATFORD GEOPHYSICAL ANOMALY ...... 132 STRATIFORM ...... 21, 24, 25, 51, 57, 80, 81, 88, 107, 108, 131, 154, 179 STRATIGRAPHY...... 1, 5, 6, 9, 11, 16, 17, 19, 22, 25, 27-31, 37, 39-41, 44-47, 50, 51, 53-59, 63, 65, 67-71, 73, 74, 76, 77, 79, 81, 82, 84, 86, 89, 92, 93, 95, 99-101, 105, 108, 110, 113-116, 118-121, 124, 126, 127, 130-132, 134, 136, 137, 146, 147, 152, 154, 156, 158, 161, 165, 166, 168, 172-174, 178, 180-183, 186, 187, 189 STRATOVOLCANO ...... 167 STREAM...... 105, 110, 119, 120, 170, 171, 187 STREAM CHANNEL ...... 170 STREAMFLOW ...... 24 STRENGTH ...... 72 STRESS...... 68, 76, 88, 91, 108, 128, 177, 186, 189 STRETISHORN DIKE...... 44 STRIKE-SLIP FAULTS...... 114 STRIPED BED ...... 51 STRIPEY SHALE...... 25, 107 STROMATOLITES ...... 50, 128, 131 STRONTIUM ...... 12, 14, 15, 17, 18, 21, 27, 29, 34, 35, 44, 47, 52, 53, 60-62, 72, 73, 92, 97-99, 117, 118, 127, 130, 132, 133, 137-139, 146, 147, 155, 173, 174, 177, 183, 187 STRONTIUM ISOTOPES ...... 15, 27, 34, 44, 47, 52, 53, 62, 92, 117, 118, 127, 130, 133, 174, 183, 187 STRUCTURAL ANALYSIS ...... 10, 37, 38, 125, 186, 187 STRUCTURAL CONTROLS...... 179 STRUCTURAL GEOLOGY...... 1, 35, 68, 80, 169 STUB LAKE...... 63 STURGEON FALLS...... 81 STURGEON NARROWS ALKALIC COMPLEX ...... 149 STURGEON RIVER GOLD MINE...... 103 STYLE...... 28, 29, 114, 142 STYLOLITE ...... 5 SUBAQUEOUS ...... 87 SUBCONTINENTAL...... 47, 93, 97, 133 SUBDUCTION...... 27, 28, 80 SUBMERSIBLES...... 104 SUBOCEANIC...... 97 SUBSIDENCE...... 28, 43, 108, 133 SUBSURFACE...... 12, 16, 92, 99, 111, 119, 153, 158, 163, 169, 174, 184, 185 SUCKER RIVER...... 48 SUDBURY BASIN...... 75 SUDBURY DIKES...... 52, 80, 158 SUDBURY IGNEOUS COMPLEX...... 29, 75, 76, 86, 90, 126, 135, 146, 173, 175 SUDBURY STRUCTURE...... 75, 76, 86, 90, 126, 135, 173, 175 SUDBURYITE ...... 146 SUEZ RIFT BASIN...... 97 SUFFOLK RHYOLITE ...... 145 SUGAR RIVER ...... 84

260 SUGARLOAF MOUNTAIN ...... 89 SULFARSENIDES...... 55, 61, 124, 125, 130 SULFATIZATION ...... 88 SULFIDE...... 6, 8, 10, 13, 17, 19-21, 26, 35, 36, 38, 42, 43, 48, 49, 53-55, 57, 60, 61, 73, 74, 80, 81, 84, 85, 87, 92-94, 96, 97, 100, 101, 103-108, 111, 115-117, 121-127, 130, 134, 135, 141-145, 147, 149-153, 155-157, 159, 160, 162, 165, 167, 172, 174, 175, 178, 180, 183, 184, 187, 189 SULFIDE LIQUID ...... 13, 36, 60, 97, 103 SULFIDE SEGREGATION ...... 93, 125 SULFIDES...... 6-10, 12, 13, 17, 19-21, 23-26, 33-36, 38, 39, 42, 43, 48, 49, 53-57, 60, 61, 63, 69, 73, 74, 77, 80-82, 84, 85, 87, 88, 92-94, 96-98, 100, 102-107, 109, 110, 114-117, 121-128, 130, 134, 135, 138-147, 150-157, 159-165, 167, 169, 172, 174-182, 184, 188, 189 SULFOSALTS ...... 124 SULFUR ...... 6, 8, 13, 23, 25, 26, 37, 48, 49, 57, 61, 77, 81, 83, 86, 92, 97, 100, 103, 107, 109, 117, 125, 130, 133, 136, 142-145, 152, 156, 169, 187, 189 SULFUR DIOXIDE ...... 169 SULFUR FUGACITY ...... 125 SULFUR ISOTOPES ...... 6, 13, 26, 61, 77, 83, 86, 92, 97, 100, 103, 109, 117, 130, 142, 143, 145, 156, 187, 189 SULLIVAN ISLAND CARBONATITE COMPLEX ...... 149 SUMMERS TOWNSHIP ...... 103 SUNBURY SHALE ...... 78 SUNGLIAO RIFT BASIN ...... 97 SUPERCONTINENT ...... 27, 80 SUPERGENE ...... 77, 128 SUPERIOR CRATON ...... 17, 25, 66 SUPERIOR MINE...... 21, 24 SUPERIOR PROVINCE...... 11, 12, 15, 16, 18, 29, 33, 34, 40, 41, 52, 55, 58, 60, 61, 66, 70, 75, 86, 91, 92, 99, 102, 116, 124, 125, 127, 130, 133, 138, 140, 149, 161, 166, 170, 171, 176-179, 183, 184 SUPERIOR SHOAL ...... 104 SUPERIOR SILVER MINE...... 183 SUPERSWELL...... 80 SURFICIAL GEOLOGY ...... 25, 131, 163-165 SURVEYS...... 5-7, 9, 10, 12-17, 21-23, 25-29, 31, 33, 35, 36, 40, 42, 45, 46, 51, 54, 56, 58, 62, 63, 68, 69, 71, 73, 75, 78, 79, 83, 86, 87, 90, 91, 94, 97-102, 104, 105, 109, 111-114, 116, 118, 119, 123, 124, 127, 129, 132, 134, 136, 139, 141, 142, 146, 150, 151, 153, 155-158, 161, 163-165, 168-178, 181, 186, 188-190 SUSIE ISLAND...... 124, 126, 153 SUTURE ...... 80 SVECOKARELIAN ...... 65 SWEDE CREEK KIMBERLITE ...... 104 SWITZERLAND COUNTY ...... 92, 158 SYENITE...... 34, 37, 52, 59, 63, 72, 91, 97, 102, 116, 124, 127, 159, 170, 176 SYMPLECTITE ...... 115, 118 SYNCHISITE ...... 51 SYNCLINE...... 7, 33, 45, 56, 70, 84, 91, 104, 107, 109, 114, 122, 123, 128, 132, 139, 151, 153, 163, 169, 186 SYNCLINES...... 105, 124 SYNGENETIC ...... 7, 11, 20, 24, 25, 88, 92, 129, 154, 175, 182 SYNTHESIS ...... 24 SYSTEMS...... 13, 45, 90, 106, 119, 120, 130, 150, 151 S-WAVES...... 112

(T)

TACONITE...... 56, 68, 74, 105 TACONITE CONCENTRATE...... 74 TAHITI ...... 159 TAIHANG UPLIFT ...... 166 TAIHANGSHAN FAULT ZONE ...... 166 TAILING BASIN ...... 59, 165 TAILING DAM...... 59, 165 TAILINGS...... 49, 59, 85, 96, 165, 174 TAIMYRITE...... 117 TAIT LAKE...... 42 TALC...... 181 TALNAKH ...... 100, 148, 179, 181 TALNAKHITE ...... 21, 57, 73, 157 TAMARACK MINE...... 162 TANLU FAULT ZONE ...... 166 TANZANIA...... 44 TAPHROGENESIS...... 45 TASMANIA ...... 189

261 TAYLOR COUNTY ...... 123 TAYLOR'S FALLS...... 16, 39, 53, 69, 98, 151 TEAR FAULT...... 107, 108 TECHNIQUES ...... 22, 26, 35, 44, 72, 73, 76, 86, 97, 135, 144, 147, 155, 159, 171 TECHNOLOGY ...... 12, 22, 31, 34, 52, 72, 74, 126, 135, 181 TECTONICS...... 8, 11, 14, 15, 20, 24, 26-29, 33-35, 38-41, 43-47, 50, 52-55, 58, 59, 61, 64-66, 70, 72, 74, 75, 77-84, 86, 89-95, 99, 102, 104, 105, 108-112, 114, 120, 123-125, 127-129, 131, 137, 142, 150-152, 156, 159, 161, 163-166, 169, 170, 173, 174, 178-180, 182, 184, 186, 188 TECTONOPHYSICS ...... 9, 15, 27, 28, 46, 55, 61, 63, 64, 78, 86, 90, 93, 99, 102, 112, 120, 170, 173, 178 TECTONO-MAGMATIC ...... 114, 133 TEETZEL TOWNSHIP CARBONATITE ...... 149, 177 TEKTITES...... 159 TELARGPALITE ...... 150 TELEMARK ...... 65 TELESEISMIC ...... 112 TELLURIDES ...... 61, 98, 117, 124, 125, 130, 147 TELLURIUM ...... 61, 98, 117, 125, 130 TELLURIUM POLARITE ...... 125 TELLUROBISMUTHINITE ...... 117 TEMAGAMITE ...... 130 TEMPERANCE RIVER...... 48, 65 TEMPERANCE RIVER STATE PARK ...... 65 TEMPERATURE ...... 24, 27, 61, 68, 76, 78, 83, 88, 92, 99, 101, 107, 109, 115, 122, 125, 128, 130, 135, 136, 142, 151, 152, 155, 157, 158, 165, 175 TENNESSEE...... 5, 17, 78, 82, 112, 120, 174 TENORITE ...... 165, 175 TERRA PATRICK ...... 133 TERRACE POINT ...... 63, 65 TERRACE POINT BASALT FLOW...... 63, 65 TERRESTRIAL...... 13, 50, 59, 64, 73, 119, 145 TERRIGENOUS ...... 9, 40, 44, 49, 76, 87, 107, 119, 171, 183 TERTIARY...... 16, 21, 64, 76, 92, 104, 116, 168, 179, 180 TETRADYMITE ...... 121 TETRAHEDRITE ...... 77, 124, 167 TETTEGOUCHE STATE PARK ...... 65 TEXAS...... 5, 17, 37, 44, 76, 78, 90, 104, 150, 151, 174, 179, 180, 189 TEXAS CRATON...... 174 TEXTURES...... 76, 119, 120, 132, 139, 140, 148, 180 THAYER QUADRANGLE ...... 159 THEANO POINT ...... 91 THERMAL ...... 5, 17, 22, 26-29, 72-74, 77-79, 107-109, 129, 139, 179, 181 THERMAL AUREOLE ...... 5 THERMAL BOUNDARY LAYER ...... 27 THERMAL COLLAPSE...... 28 THERMAL CONDUCTIVITY ...... 17 THERMAL HISTORY...... 79, 139, 179 THERMAL MATURITY ...... 77, 78 THERMAL SUBSIDENCE ...... 28, 108 THERMODYNAMICS ...... 49, 95, 135, 151 THERMOMETRY ...... 13, 101 THICKNESS...... 5, 10-12, 24, 27, 28, 37, 39, 41, 61, 63, 65, 70, 71, 91, 96, 97, 99, 101, 102, 105, 107, 118, 127, 157, 161, 167, 171, 173, 174, 182, 183, 187 THIEL FAULT ...... 28, 72, 105, 166, 169 THIN SECTIONS...... 170 THIRTY-NINE MILE CREEK...... 64 THOLEIITE...... 8, 9, 30, 44, 63, 64, 66, 101 THOLEIITIC...... 8, 58, 59, 66, 87, 93, 106, 125 THOLEIITIC BASALT...... 8, 58, 59, 87, 106 THOLEIITIC MAGMA ...... 125 THOMASTON ...... 94, 109 THOMASTON QUADRANGLE ...... 94 THOMPSON MINE ...... 126 THOMSON FORMATION...... 35, 60, 66, 67, 69, 86, 91, 95, 103, 107, 110, 111, 119, 120, 136, 153, 154, 185, 188 THORIUM...... 146, 162 THORNAPPLE DEPOSIT ...... 123 THRUST FAULT ...... 29, 54, 75, 98, 104, 108, 109 THRUST FAULTS...... 70 THUNDER BAY ...... 5, 8, 9, 11, 12, 14-19, 21, 27-29, 34-41, 44, 48, 49, 52, 55-61, 63-66, 68-70, 72, 73, 75, 77, 79, 81-86, 90-105, 107, 109-111, 114-116, 118, 119, 121, 123-125, 127, 130, 131, 135-141, 145, 148-151, 153-158, 161-164, 166-171, 174- 181, 183-186, 188

262 THUNDER BAY DIKES ...... 52, 137 THUNDER CAPE ...... 167 TI...... 19, 42, 59, 67, 77, 100, 103, 115, 121, 124, 125, 135, 185 TIEBEL CREEK QUADRANGLE ...... 141 TIELING KIMBERLITE ...... 166 TIGER BOY ...... 6, 26, 30, 31, 43, 56, 62, 66, 74, 92, 106, 107, 122, 136, 143, 144, 156, 157, 172 TILDEN MOUND DEPOSIT ...... 105 TILL...... 7, 44, 96, 139, 188 TILTING...... 70, 171 TIN...... 13, 82, 130, 147 TITANIFEROUS MAGNETITE ...... 22, 67, 97, 124, 188, 189 TITANIUM...... 19, 22, 37, 42, 59, 67, 74, 77, 82, 100, 103, 105, 110, 115, 121, 122, 124, 125, 136, 143, 155, 156, 165, 176, 189 TITANOMAGNETITE ...... 42, 67, 113, 115, 117, 126, 130, 145, 151 TODD COUNTY ...... 58, 121 TOFTE...... 42, 63, 65 TOIMI DRUMLIN FIELD...... 38, 174 TOIMI QUADRANGLE ...... 33 TOIVOLA MINE ...... 95 TOM LAKE...... 42 TOMAH MEMBER ...... 11 TOMOGRAPHY...... 71, 90 TONNAGE ...... 165 TOOHEY LAKE QUADRANGLE ...... 18 TOPOGRAPHIC...... 7, 38, 189 TOPOGRAPHY ...... 7, 16, 38, 54, 132, 135, 141, 177, 186, 188 TORRENS HINGE ZONE ...... 15 TOTAL ORGANIC CARBON ...... 74, 78, 133 TOURMALINE...... 56, 95 TOWER QUADRANGLE ...... 104 TOWN MOUNTAIN GRANITE ...... 44 TOXICITY...... 122 TRACE ELEMENT ANALYSES ...... 9, 13, 20, 30, 31, 36, 52, 53, 56, 57, 61, 62, 64, 66, 68, 94, 97, 99-101, 112, 113, 115, 116, 125, 141, 148, 149, 151, 155, 156, 162, 163, 166, 176, 181 TRACE ELEMENTS ANALYSES ...... 19, 27, 37, 44, 84, 86, 98, 106, 116, 117, 124, 126, 133, 145, 147, 156, 158, 165, 183 TRACHYBASALT...... 63 TRACHYSPHAERIDIUM...... 165 TRANS SUPERIOR TECTONIC ZONE...... 71, 72, 102, 148-150, 166, 184 TRANSFORM FAULTS...... 27, 29, 46, 179 TRANSGRESSION...... 84 TRANSPORT ...... 20, 25, 55, 117, 119, 150, 151, 167, 168, 187 TRANSVERSE...... 40 TRANS-HUDSON OROGEN ...... 17, 80, 98, 160, 161 TRAPS...... 23, 27, 39, 43, 44, 47, 62, 64, 68, 96, 100, 131, 133, 141 TRAVERSE LIMESTONE...... 78 TREMPLEAU FORMATION ...... 78 TRENTON FORMATION ...... 78 TRIASSIC...... 13, 27, 46, 64, 76, 100, 126, 141, 148, 159, 179, 181 TRIASSIC BASINS ...... 46 TRIBAG MINE...... 10, 17, 127, 128, 166 TRIDYMITE...... 63 TRIMOUNTAIN MINE ...... 23, 24, 162 TRIPLE JUNCTIONS...... 26, 29, 180, 189 TRITERPANES...... 139 TROCTOLITE...... 8, 19-21, 26, 30, 41, 42, 48, 49, 53, 57, 62, 67, 73, 74, 84, 89, 93, 94, 98, 100, 114-118, 121, 122, 125, 130, 134, 138, 141, 142, 144, 150, 156, 165, 171, 172, 174, 179, 181 TROCTOLITE SERIES ...... 8, 26, 48, 53, 57, 73, 74, 84, 89, 93, 100, 117, 118, 122, 130, 134, 138, 141, 142, 144, 150, 156, 165, 172, 181 TROCTOLITIC SERIES...... 19, 38, 41-43, 103, 113, 115-117, 144, 150, 165, 174 TROILITE...... 6, 21, 36, 53, 150 TROY MINE...... 25 TSAIDAM RIFT BASIN ...... 97 TUFF...... 5, 55, 62, 85, 87, 112, 135, 176, 183 TUNGSTEN ...... 147 TURBIDITE ...... 30, 54, 55, 66, 166 TURBIDITY CURRENT STRUCTURES...... 55 TUSCARORA INTRUSION ...... 42, 43, 87, 106, 114, 116, 117 TWIN CITIES BASIN ...... 13, 163, 174, 190 TWIN LAKES...... 43 TWO DUCK LAKE INTRUSION...... 41, 60, 61, 130, 177, 178 TWO HARBORS ...... 64, 66, 83, 119 TWO ISLAND RIVER ...... 48

263 TYLER SLATE...... 118, 122

(U)

UDZH ...... 65 UINTA MOUNTAIN GROUP ...... 51 ULTRAMAFIC...... 5, 19, 25, 41, 48, 54, 57, 61, 63, 72, 74, 90, 94, 100, 103, 104, 115, 121, 122, 131, 138, 140, 143, 146, 155, 156, 163, 165, 175, 177, 188, 189 ULTRASTRUCTURE...... 50 ULVÖSPINEL...... 21, 138 UNCONFORMITIES ...... 80, 86, 89, 99, 171 UNCONFORMITY...... 11, 24, 28, 31, 36, 65, 69, 77, 80, 81, 86, 89, 111, 123, 131, 149, 171, 173, 180 UNDEPLETED MANTLE ...... 64 UNDERGROUND MINE ...... 80 UNDERGROUND MINING ...... 150 UNDERPLATING ...... 7, 15 UNITED STATES...... 8, 17, 25, 27, 40, 47, 51, 60, 73, 81, 91-93, 102, 111, 121, 129, 133, 146, 170, 182, 187 UNNAMED CREEK ...... 49 UNNAMED FORMATION ...... 94, 109 UPDIP BATHTUB ...... 43, 122, 136, 157 UPLIFT ...... 5, 75, 80, 123, 128, 129, 151, 166 UPPER CAMBRIAN ...... 10, 38, 99, 171 UPPER CANADA KIMBERLITE ...... 149 UPPER CANADA MINE ...... 25 UPPER CHERTY ...... 19, 68 UPPER CRUST...... 81, 109 UPPER KEWEENAWAN ...... 45, 50, 71, 76, 77, 79, 81, 89, 92, 108, 112, 116, 125, 168, 173, 175, 182, 187 UPPER MANITOU RIVER GABBRO ...... 114 UPPER MANTLE...... 15, 27, 79, 189 UPPER MICHIGAN...... 20, 21, 27, 28, 50, 91, 118, 133, 136, 150, 162, 164, 173, 181, 183 UPPER MISSISSIPPI VALLEY ...... 10, 11, 30, 84 UPPER PENINSULA...... 2, 12, 14, 18, 21, 51, 55, 60, 81, 83, 88, 89, 100, 109, 111, 112, 146 UPPER PRECAMBRIAN...... 41, 91, 113, 118, 119, 131, 171, 179 UPPER RED CLASTICS GROUP...... 8 UPPER SANDSTONE ...... 25, 51, 183 UPPER SHALE...... 25, 51, 71, 161, 171, 183 UPPER SLATY...... 19, 68 UPPER ZONE...... 161 URAL-VOLGA REGION...... 45 URANIUM ...... 15, 17, 29, 36, 44, 51, 60, 72, 75, 80, 89-92, 94, 97, 110, 113, 114, 120, 123, 129, 130, 133, 134, 146, 148-150, 159, 162, 166, 170, 171, 174, 177 URANIUM-LEAD ...... 17, 29, 44, 60, 72, 75, 90, 94, 97, 113, 114, 130, 133, 134, 159, 171, 174 URUGUAY ...... 64 USKAKOVKA SUITE ...... 45 UTAH ...... 20, 65, 76, 112, 121, 174, 180, 187

(V)

VALENTINE TOWNSHIP CARBONATITE COMPLEX ...... 149 VALLERIITE ...... 57, 117 VALLERITE ...... 21, 53, 74 VALLEYS ...... 188 VAN HORN UPLIFT ...... 5 VANADIUM ...... 117, 122, 156, 176, 188 VANADYL PORPHYRIAN ...... 13 VARIOGRAM...... 134 VARIOLITE ...... 63 VEGETATION ...... 5, 74 VEIN LAKE ...... 36 VEINS...... 6, 20, 21, 23, 30, 36, 38-40, 55, 58, 66-68, 71, 76, 77, 82, 84, 88, 90-92, 101, 102, 107, 109, 110, 112, 123, 124, 128-130, 140- 142, 147, 152-154, 158, 161, 166, 182 VELKERRI FORMATION...... 46 VELOCITY...... 6, 7, 10, 12, 15, 22, 25, 26, 37, 51, 58, 69, 85, 86, 90, 102, 118, 119, 129, 142, 158, 161, 164, 177, 181 VENDIAN...... 45 VENTS...... 63 VERMILION DISTRICT ...... 5, 7, 15, 32, 34, 35, 38, 48, 54, 60, 67, 68, 72, 74, 83, 85, 95, 104, 114, 119-121, 125, 126, 159, 161, 165, 173, 185 VERMILION FAULT...... 5, 74, 152

264 VERMILION GRANITE ...... 60 VERMILION GRANITIC COMPLEX ...... 32, 119-121, 159 VERMILION LAKE...... 48 VERMILION MASSIF...... 38 VERMILLION ANTICLINE ...... 120 VERMONT...... 76, 82, 159 VERNON COUNTY ...... 84 VERTEBRATA...... 184 VERY LOW FREQUENCY...... 163 VESUVIANITE...... 73 VICTOR HEAD DIABASE ...... 114 VICTORIA ...... 24, 37, 76, 162, 189 VICTORIA ISLAND...... 76 VICTORIA MINE...... 24, 162 VIETNAM...... 189 VIKING GRABEN...... 97 VILAS COUNTY ...... 137, 159, 172 VIOLARITE ...... 7, 21, 36, 53, 57, 74, 103, 117, 155, 165 VIRGINIA...... 5, 6, 8, 18, 19, 26, 31, 33, 35, 42-44, 57, 60, 67, 76, 77, 80, 82, 84, 92, 103, 104, 106, 107, 112, 117, 135, 141-144, 154, 156, 165, 167, 172, 189 VIRGINIA FORMATION ...... 5, 6, 8, 18, 19, 26, 31, 33, 35, 42, 43, 57, 60, 67, 80, 84, 92, 103, 106, 107, 117, 135, 141-144, 156, 165, 167, 172 VIRGINIA QUADRANGLE ...... 104 VLF ...... 163 VMS...... 36, 73, 82, 105, 123, 140, 161 VOLATILES...... 23, 35, 36, 87, 117, 135, 136, 179, 181 VOLCANIC...... 5-9, 11-14, 16, 18-20, 22-30, 32-34, 37-39, 41-50, 52-56, 58-70, 72, 73, 76, 78-87, 90, 91, 93-101, 103-107, 109-111, 113, 114, 118-120, 122, 123, 126, 127, 129, 131-142, 145-149, 151-162, 166-176, 180-182, 184-187, 189, 190 VOLCANIC ASH...... 185 VOLCANIC BRECCIA ...... 64 VOLCANIC GLASS...... 134, 145 VOLCANIC ROCKS ..... 5-9, 11-14, 16, 18-20, 22-30, 32, 37-39, 41-48, 50, 52-56, 58-70, 72, 73, 76, 78-84, 86, 87, 90, 91, 93-101, 103-107, 109, 110, 114, 118-120, 122, 123, 126, 127, 129, 131, 132, 134-138, 140, 141, 145, 147-149, 151-155, 157-162, 166- 176, 180-182, 185, 186, 189, 190 VOLCANIC SANDSTONE ...... 93 VOLCANIC VENTS...... 63 VOLCANICLASTIC...... 9 VOLCANISM...... 8, 13, 28, 43, 44, 47, 64, 70, 95, 127, 133, 171 VOLCANO ...... 28, 94, 182 VOLCANOGENIC MASSIVE SULFIDES ...... 36, 73, 82, 105, 123, 140, 161 VOLCANOLOGY ...... 64-66, 127 VOLYNO...... 65

(W)

WABIGOON SUBPROVINCE ...... 7, 32, 34, 184 WAKEFIELD ...... 112, 137 WAKEFIELD QUADRANGLE ...... 137 WALLROCK...... 30, 88, 140, 152 WARREN COUNTY ...... 5, 158 WASECA COUNTY ...... 118 WASECA FAULT...... 163 WASHBURN STAGE ...... 21 WASHINGTON ...... 16, 22, 23, 38, 44, 46, 55-57, 65, 67, 73, 80, 118, 119, 130, 136, 151, 152, 157, 161-164, 167, 171, 174, 178, 181, 189 WASHINGTON COUNTY ...... 16, 56 WASHINGTON COUNTY KANSAS ...... 56 WASTE ROCK...... 30, 49, 59, 96, 165 WATER...... 10, 30, 40, 48, 49, 52, 61, 69, 72, 74, 90, 95, 101, 103, 109, 121, 122, 128, 130, 131, 139, 141, 144, 156, 158, 159, 163, 165, 169, 173 WATER CHEMISTRY...... 30, 40, 49 WATER HEN ...... 48, 61, 74, 103, 121, 122, 130, 156, 165 WATER HEN INTRUSION...... 61, 103, 121, 130, 165 WATER QUALITY ...... 10, 158, 159 WATER RESOURCES...... 72, 128, 131, 173 WATERLOO QUARTZITE ...... 161 WATERSHEDS ...... 24, 151 WATERSMEET ...... 56, 159, 160, 172 WATERSMEET QUADRANGLE ...... 159 WAWA SUBPROVINCE...... 34, 55, 76, 162, 184

265 WEATHERING...... 38, 88, 128, 140, 150, 154 WEIYUAN GAS FIELD ...... 45 WELDED...... 65 WELDING...... 65 WELLS ...... 152, 181 WELLSBURG BASIN ...... 8 WELL-LOGGING ...... 22, 142 WERNECKE SUPERGROUP ...... 65 WEST AFRICAN CRATON ...... 65 WEST BEAVER MINE ...... 55 WEST DULUTH QUADRANGLE ...... 141 WEST KIMBERLY...... 101 WEST SAND BAY MEMBER ...... 9 WEST SIBERIAN PLATFORM...... 141 WEST VIRGINIA...... 76 WESTERN AUSTRALIA...... 21, 117 WESTERN GABBRO ...... 136, 176 WETLEGS ...... 33, 89, 106, 117, 122, 156 WETMORE LANDING INTRUSIONS ...... 14 WHITE MOUNTAIN MAGMA SERIES ...... 151 WHITE MOUNTAINS ...... 82 WHITE PINE ANTICLINE ...... 169, 182 WHITE PINE FAULT...... 24, 71, 98, 129, 130, 150, 169, 182, 183 WHITE PINE MINE...... 10, 11, 13, 22, 24-26, 30, 31, 34, 35, 37, 45, 47, 49-51, 56, 58, 71-74, 76-78, 80-82, 86, 88, 90, 94, 98, 101, 107- 112, 118, 128-131, 137, 139-141, 145-147, 150, 154, 161, 162, 169-171, 175, 182-184, 186, 187 WHITE PINE QUADRANGLE ...... 82, 141 WHITE PINE REGION ...... 7, 24, 35, 184 WHITE PINE-IRON RIVER SYNCLINE...... 109 WHITE RIVER...... 9 WHITE'S RIDGE ...... 7, 157 WHITEFACE RESERVOIR...... 156 WHITEFISH POINT...... 132 WHITESIDE...... 160 WHITNEYITE...... 23 WHOLE ROCK ANALYSES ...... 6, 9, 12, 13, 17, 20, 23, 30, 31, 34, 38, 53, 56, 57, 59, 61-67, 72, 77, 85, 86, 93, 94, 97, 98, 101, 104, 106, 113, 115, 116, 118, 121, 124, 125, 133, 141, 147-149, 151, 155, 156, 158, 163, 165-167, 176, 184 WHYTE QUADRANGLE ...... 33 WICHITA IGNEOUS PROVINCE ...... 174 WIDE ANGLE ...... 51, 86, 112, 158, 171, 181 WILDER LAKE ...... 113 WILLYAMA BLOCK...... 65 WILSON LAKE FERROGABBRO ...... 114 WILSON LAKE QUADRANGLE ...... 18 WIND RIVER MOUNTAINS ...... 44 WINDIMURRA ...... 21 WINDROW FORMATION ...... 11 WINDSOR FORMATION ...... 37 WINE LAKE...... 42, 165 WINE LAKE INTRUSION...... 42, 165 WINONA ...... 163, 187 WINONA MINE ...... 187 WISCONSIN...... 4-7, 9-12, 14-18, 20, 23, 24, 26-38, 40, 41, 43-46, 48, 49, 51-53, 55-57, 59-66, 69-73, 76-84, 86, 87, 89-98, 100-102, 104- 114, 116, 118-127, 129-134, 136, 137, 139-142, 145, 146, 152-155, 158-175, 178-180, 182, 184-190 WISCONSIN ARCH...... 6, 7, 33 WISCONSIN MAGMATIC TERRANE ...... 63, 91, 119, 123, 160, 161, 164, 173 WISCONSIN POINT ...... 126 WITTICHENITE...... 77 WITWATERSRAND BASIN ...... 108 WITWATERSRAND SUPERGROUP ...... 108 WOLF LAKE ANTICLINE ...... 88 WOLF RIVER BATHOLITH...... 6, 7, 91, 123, 160, 161, 173 WOLLASTONITE ...... 73, 148 WOLVERINE MINE ...... 21, 23, 133, 162 WOLVERINE SANDSTONE ...... 23, 24, 182 WOOD CHIPS ...... 96 WOPMAY OROGEN...... 65, 80 WRIGHT COUNTY ...... 163 WUMISHAN FORMATION ...... 45 WYANDOTTE ...... 163 WYMAN CREEK...... 33, 35, 122, 156

266 WYOMING...... 44, 60, 76, 80, 82, 112, 159, 173, 174, 189 WYOMING PROVINCE ...... 80, 174

(X)

XENOCRYSTS...... 85, 112 XENOLITHS...... 18, 21, 57, 63, 64, 67, 85, 127, 143, 144 XONOTLITE ...... 122

(Y)

YAKIMA BASALTS ...... 44 YARAKTIN HORIZON...... 45 YAVAPAI OROGEN ...... 80 YAVAPAI PROVINCE ...... 174 YAVAPAI-CENTRAL PLAINS OROGEN ...... 80 YELLOW MEDICINE COUNTY ...... 104 YELLOWKNIFE MINE ...... 90 YENISEI-KHATANGSKY TROUGH ...... 141 YILGARN BLOCK...... 65 YINGXIAN KIMBERLITE ...... 166 YORKE PENINSULA ...... 15 YTTRIUM...... 93 YUKON ...... 65, 76

(Z)

ZACATECAS ...... 181 ZAIRE...... 25 ZAMBIA...... 25 ZENMAC...... 36 ZEOLITE-FACIES ...... 9, 20, 70, 87, 91, 99, 106, 110, 152 ZEOLITE...... 9, 20, 23, 24, 64, 66, 70, 87, 91, 96, 99, 106, 110, 152 ZIMBABWE...... 21, 65, 106, 126, 189 ZINC ...... 24, 25, 36, 37, 56, 75, 82, 84, 87, 91, 92, 109, 110, 112, 129, 140, 146, 151, 161 ZIRCON...... 10, 29, 44, 60, 94, 133, 146, 159 ZIRCONS ...... 17, 94, 113, 114, 133, 159 ZONATION ...... 86, 145, 152 ZONED ...... 90, 130 ZONING ...... 23-25, 130, 145, 149, 165, 182, 183 ZVYAGINSKITE ...... 150 ZVYAGINSTEVITE ...... 130

267