9.914Mb Application/Pdf
Total Page:16
File Type:pdf, Size:1020Kb
Load more
Recommended publications
-
Stratographic Coloumn of Iowa
Iowa Stratographic Column November 4, 2013 QUATERNARY Holocene Series DeForest Formation Camp Creek Member Roberts Creek Member Turton Submember Mullenix Submember Gunder Formation Hatcher Submember Watkins Submember Corrington Formation Flack Formation Woden Formation West Okoboji Formation Pleistocene Series Wisconsinan Episode Peoria Formation Silt Facies Sand Facies Dows Formation Pilot Knob Member Lake Mills Member Morgan Member Alden Member Noah Creek Formation Sheldon Creek Formation Roxana/Pisgah Formation Illinoian Episode Loveland Formation Glasford Formation Kellerville Memeber Pre-Illinoian Wolf Creek Formation Hickory Hills Member Aurora Memeber Winthrop Memeber Alburnett Formation A glacial tills Lava Creek B Volcanic Ash B glacial tills Mesa Falls Volcanic Ash Huckleberry Ridge Volcanic Ash C glacial tills TERTIARY Salt & Pepper sands CRETACEOUS "Manson" Group "upper Colorado" Group Niobrara Formation Fort Benton ("lower Colorado ") Group Carlile Shale Greenhorn Limestone Graneros Shale Dakota Formation Woodbury Member Nishnabotna Member Windrow Formation Ostrander Member Iron Hill Member JURASSIC Fort Dodge Formation PENNSYLVANIAN (subsystem of Carboniferous System) Wabaunsee Group Wood Siding Formation Root Formation French Creek Shale Jim Creek Limestone Friedrich Shale Stotler Formation Grandhaven Limestone Dry Shale Dover Limestone Pillsbury Formation Nyman Coal Zeandale Formation Maple Hill Limestone Wamego Shale Tarkio Limestone Willard Shale Emporia Formation Elmont Limestone Harveyville Shale Reading Limestone Auburn -
Hydrogeology and Stratigraphy of the Dakota Formation in Northwest Iowa
WATER SUPPLY HYDROGEOLOGY AND J.A. MUNTER BULLETIN G.A. LUDVIGSON NUMBER 13 STRATIGRAPHY OF THE B.J. BUNKER 1983 DAKOTA FORMATION IN NORTHWEST IOWA Iowa Geological Survey Donald L. Koch State Geologist and Director 123 North Capitol Street Iowa City, Iowa 52242 IOWA GEOLOGICAL SURVEY WATER-SUPPLY BULLETIN NO. 13 1983 HYDROGEOLOGY AND STRATIGRAPHY OF THE DAKOTA FORMATION IN NORTHWEST IOWA J. A. Munter G. A. Ludvigson B. J. Bunker Iowa Geological Survey Iowa Geological Survey Donald L. Koch Director and State Geologist 123 North Capitol Street Iowa City, Iowa 52242 Foreword An assessment of the quantity and quality of water available from the Dakota (Sandstone) Formation 1n northwest Iowa is presented in this report. The as sessment was undertaken to provide quantitative information on the hydrology of the Dakota aquifer system to the Iowa Natural Resources Council for alloca tion of water for irrigation, largely as a consequence of the 1976-77 drought. Most area wells for domestic, livestock, and irrigation purposes only partial ly penetrated the Dakota Formation. Consequently, the long-term effects of significant increases in water withdrawals could not be assessed on the basis of existing wells. Acquisition of new data was based upon a drilling program designed to penetrate the entire sequence of Dakota sediments at key loca tions, after a thorough inventory and analysis of existing data. Definition of the distribution, thickness, and lateral and vertical changes in composition of the Dakota Formation has permitted the recognition of two mem bers. Additionally, Identification of the rock units that underlie the Dakota Formation has contributed greatly to our knowledge of the regional geology of northwest Iowa and the upper midwest. -
Opinions Concerning the Age of the Sioux Quartzite
Proceedings of the Iowa Academy of Science Volume 2 Annual Issue Article 46 1894 Opinions Concerning the Age of the Sioux Quartzite Charles Rollin Keyes Let us know how access to this document benefits ouy Copyright ©1894 Iowa Academy of Science, Inc. Follow this and additional works at: https://scholarworks.uni.edu/pias Recommended Citation Keyes, Charles Rollin (1894) "Opinions Concerning the Age of the Sioux Quartzite," Proceedings of the Iowa Academy of Science, 2(1), 218-222. Available at: https://scholarworks.uni.edu/pias/vol2/iss1/46 This Research is brought to you for free and open access by the Iowa Academy of Science at UNI ScholarWorks. It has been accepted for inclusion in Proceedings of the Iowa Academy of Science by an authorized editor of UNI ScholarWorks. For more information, please contact [email protected]. Keyes: Opinions Concerning the Age of the Sioux Quartzite 218 IOWA ACADEMY OF SCIENCES. OPINIONS CONCERNING THE AGE OF THE SIOUX QUARTZITE. BY CHARLES ROLLIN KEYES. [Abstract.] The Sioux quartzite is a formation made up of hard, flinty beds, of considerable thickness and extent, which are exposed principally along the Sioux river, in southeastern Dakota, south western Minnesota and northwestern Iowa. It is of particular interest to Iowans, for the re~son it has been usually regarded as the most ancient geological formation occurring within the limits of the state-older than the lead-bearing rocks of north eastern Iowa, and older than the CamW-ian sandstones which lie at the base of the Mississippi bluffs in the extreme corner of the state. -
The Geology of the Middle Precambrian Rove Formation in Northeastern Minnesota
MINNESOTA GEOLOGICAL SURVEY 5 P -7 Special Publication Series The Geology of the Middle Precambrian Rove Formation in northeastern Minnesota G. B. Morey UNIVERSITY OF MINNESOTA MINNEAPOLIS • 1969 I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I THE GEOLOGY OF THE MIDDLE PRECAMBRIAN ROVE FORMATION IN NORTHEASTERN MINNESOTA by G. B. Morey CONTENTS Page Abstract ........................................... 1 Introduction. 3 Location and scope of study. 3 Acknowledgements .. 3 Regional geology . 5 Structural geology . 8 Rock nomenclature . 8 Stratigraphy . .. 11 Introduction . .. 11 Nomenclature and correlation. .. 11 Type section . .. 11 Thickness . .. .. 14 Lower argillite unit. .. 16 Definition, distribution, and thickness. .. 16 Lithologic character . .. 16 Limestones. .. 17 Concretions. .. 17 Transition unit . .. 17 Definition, distribution, and thickness. .. 17 Lithologic character . .. 19 Thin-bedded graywacke unit . .. 19 Definition, distribution, and thickness. .. 19 Lithologic character. .. 20 Concretions ... .. 20 Sedimentary structures. .. 22 Internal bedding structures. .. 22 Structureless bedding . .. 23 Laminated bedding . .. 23 Graded bedding. .. 23 Cross-bedding . .. 25 Convolute bedding. .. 26 Internal bedding sequences . .. 26 Post-deposition soft sediment deformation structures. .. 27 Bed pull-aparts . .. 27 Clastic dikes . .. 27 Load pockets .. .. 28 Flame structures . .. 28 Overfolds . .. 28 Microfaults. .. 28 Ripple marks .................................. 28 Sole marks . .. 28 Groove casts . .. 30 Flute casts . -
Precambrian Basement Terrane of South Dakota
BULLETIN 41 Precambrian Basement Terrane of South Dakota KELLI A. MCCORMICK Department of Environment and Natural Resources Geological Survey Program Akeley-Lawrence Science Center University of South Dakota Vermillion, South Dakota 2010 GEOLOGICAL SURVEY PROGRAM DEPARTMENT OF ENVIRONMENT AND NATURAL RESOURCES AKELEY-LAWRENCE SCIENCE CENTER, USD 414 EAST CLARK STREET VERMILLION, SOUTH DAKOTA 57069-2390 (605) 677-5227 Derric L. Iles, M.S., C.P.G. State Geologist Sarah A. Chadima, M.S., C.P.G. Senior Geologist Daniel E. Costello, M.S. Geologist Timothy C. Cowman, M.S. Natural Resources Administrator Brian A. Fagnan, M.S. Senior Geologist Dragan Filipovic, M.S. Senior Hydrologist Ann R. Jensen, B.S. Senior Geologist Darren J. Johnson, M.S. Geologist Matthew T. Noonan, B.S. Hydrologist Thomas B. Rich, M.S. Senior Hydrologist Layne D. Schulz, B.S. Senior Geologist Dennis D. Iverson Civil Engineering Technician Scott W. Jensen Civil Engineering Technician Ted R. Miller, B.S. Civil Engineering Technician Colleen K. Odenbrett Word Processing Supervisor Jeffrey J. Puthoff, B.A. Natural Resources Technician Lori L. Roinstad Cartographer Priscilla E. Young, B.S. Senior Secretary RAPID CITY REGIONAL OFFICE 2050 WEST MAIN, SUITE 1 RAPID CITY, SOUTH DAKOTA 57702-2493 (605) 394-2229 Mark D. Fahrenbach, Ph.D. Senior Geologist Kelli A. McCormick, Ph.D. Senior Geologist Joanne M. Noyes, M.S., P.E. Senior Hydrologist STATE OF SOUTH DAKOTA M. Michael Rounds, Governor DEPARTMENT OF ENVIRONMENT AND NATURAL RESOURCES Steven M. Pirner, Secretary DIVISION OF FINANCIAL AND TECHNICAL ASSISTANCE David Templeton, Director GEOLOGICAL SURVEY PROGRAM Derric L. Iles, State Geologist BULLETIN 41 PRECAMBRIAN BASEMENT TERRANE OF SOUTH DAKOTA KELLI A. -
The Penokean Orogeny in the Lake Superior Region Klaus J
Precambrian Research 157 (2007) 4–25 The Penokean orogeny in the Lake Superior region Klaus J. Schulz ∗, William F. Cannon U.S. Geological Survey, 954 National Center, Reston, VA 20192, USA Received 16 March 2006; received in revised form 1 September 2006; accepted 5 February 2007 Abstract The Penokean orogeny began at about 1880 Ma when an oceanic arc, now the Pembine–Wausau terrane, collided with the southern margin of the Archean Superior craton marking the end of a period of south-directed subduction. The docking of the buoyant craton to the arc resulted in a subduction jump to the south and development of back-arc extension both in the initial arc and adjacent craton margin to the north. A belt of volcanogenic massive sulfide deposits formed in the extending back-arc rift within the arc. Synchronous extension and subsidence of the Superior craton resulted in a broad shallow sea characterized by volcanic grabens (Menominee Group in northern Michigan). The classic Lake Superior banded iron-formations, including those in the Marquette, Gogebic, Mesabi and Gunflint Iron Ranges, formed in that sea. The newly established subduction zone caused continued arc volcanism until about 1850 Ma when a fragment of Archean crust, now the basement of the Marshfield terrane, arrived at the subduction zone. The convergence of Archean blocks of the Superior and Marshfield cratons resulted in the major contractional phase of the Penokean orogeny. Rocks of the Pembine–Wausau arc were thrust northward onto the Superior craton causing subsidence of a foreland basin in which sedimentation began at about 1850 Ma in the south (Baraga Group rocks) and 1835 Ma in the north (Rove and Virginia Formations). -
OVERVIEW of the BEDROCK GEOLOGY of NORTHWEST IOWA by Brian J
Iowa DNR Geological Survey Bureau 109 Trowbridge Hall Iowa City IA 52252-1319 Phone: 319-335-1575 http://www.igsb.uiowa.edu OVERVIEW OF THE BEDROCK GEOLOGY OF NORTHWEST IOWA by Brian J. Witzke Iowa Department of Natural Resources Geological Survey Bureau May 1997 INTRODUCTION The region encompassed by the northwest Iowa bedrock geologic map includes the 19- county area generally north of latitude 42° 13’ N and west of longitude 93° 58’ W. Bedrock across most of the map area is mantled by a cover of Quaternary sediments, primarily glacial till, alluvium, and loess. The Quaternary cover typically ranges in thickness between about 100 to 400 feet (30 to 120 m) across most of the map area, and locally reaches thicknesses in excess of 500 feet (150 m) within the deeper parts of some bedrock channels. Bedrock exposure is limited to only scattered small areas in the map region. These include Cretaceous exposures scattered along the lower bluffs and adjacent tributaries of the Big Sioux and Missouri River Valleys in western Woodbury and Plymouth counties (e.g., Witzke and Ludvigson, 1987). Small areas of Cretaceous bedrock exposure are also noted at (1) Grant City, southeast Sac County, (2) Camp Quest near LeMars, Plymouth County, and (3) shale outcrop near the margin of the Manson Impact Structure along Lizard Creek in northwestern Webster County (Hartung and Anderson, 1996, p. 33). Significant exposures of Jurassic, Pennsylvanian, and Mississippian strata crop out in portions of the Des Moines River drainage of Webster and Humboldt counties. Economically important Mississippian limestone strata (Gilmore City Formation) are exposed near Gilmore City in eastern Pocahontas County (Woodson, 1989). -
The Flora of the Sioux Quartzite in Iowa
View metadata, citation and similar papers at core.ac.uk brought to you by CORE provided by University of Northern Iowa Proceedings of the Iowa Academy of Science Volume 4 Annual Issue Article 15 1896 The Flora of the Sioux Quartzite in Iowa B. Shimek Copyright ©1896 Iowa Academy of Science, Inc. Follow this and additional works at: https://scholarworks.uni.edu/pias Recommended Citation Shimek, B. (1896) "The Flora of the Sioux Quartzite in Iowa," Proceedings of the Iowa Academy of Science, 4(1), 72-77. Available at: https://scholarworks.uni.edu/pias/vol4/iss1/15 This Research is brought to you for free and open access by the Iowa Academy of Science at UNI ScholarWorks. It has been accepted for inclusion in Proceedings of the Iowa Academy of Science by an authorized editor of UNI ScholarWorks. For more information, please contact [email protected]. Shimek: The Flora of the Sioux Quartzite in Iowa 72 row A ACADE~IY OF SCIENCES. 6. The action was probably not simultaneous uver the entire area, the fine material removed from the most barren parts being deposited in places already prepared for its retention. THE FLORA OF THE SIOUX QUARTZITE IN IOWA. BY B. SHIMEK. The Sioux quartzite is exposed in this state only in the extreme northwestern corner of Lyon county. Other and greater exposures however a.re found in the adjacent parts of South Dakota. The chief exposure on the Iowa side is located only a few rods south of the state line and about one and three-quarters miles east of the Big Sioux river. -
Open Kosei.Pdf
The Pennsylvania State University The Graduate School Department of Geosciences GEOCHEMISTRY OF ARCHEAN–PALEOPROTEROZOIC BLACK SHALES: THE EARLY EVOLUTION OF THE ATMOSPHERE, OCEANS, AND BIOSPHERE A Thesis in Geosciences by Kosei Yamaguchi Copyright 2002 Kosei Yamaguchi Submitted in Partial Fulfillment of the Requirements for the Degree of Doctor of Philosophy May 2002 We approve the thesis of Kosei Yamaguchi Date of Signature ____________________________________ _______________________ Hiroshi Ohmoto Professor of Geochemistry Thesis Advisor Chair of Committee ____________________________________ _______________________ Michael A. Arthur Professor of Geosciences ____________________________________ _______________________ Lee R. Kump Professor of Geosciences ____________________________________ _______________________ Raymond G. Najjar Associate Professor of Meteorology ____________________________________ _______________________ Peter Deines Professor of Geochemistry Associate Head for Graduate Program and Research in Geosciences iii ABSTRACT When did the Earth's surface environment become oxic? The timing and mechanism of the rise of atmospheric pO2 level in the early Precambrian have been long debated but no consensus has been reached. The oxygenation of the atmosphere and oceans has significant impacts on the evolution of the biosphere and the geochemical cycles of redox-sensitive elements. In order to constrain the evolution of the atmosphere, oceans, biosphere, and geochemical cycles of elements, a systematic and multidisciplinary -
G-012011-1E Geological Precambrian Timeline Midwest
Copper Harbor Conglomerate Gunflint Formation: Breccia with white quartz Precambrian Geologic Events in the Mid-Continent of North America G-012011-1E 1 inch (Century Mine, Upper Peninsula MI) (Sibley Peninsula, Thunder Bay, ON) Compiled by: Steven D.J. Baumann, Alexandra B. Cory, Micaela M. Krol, Elisa J. Piispa Updated March 2013 Oldest known rock showing a dipole magnetic field: red dacite in Austrailia Paleomagnetic Line 3,800 3,700 3,600 3,500 3,400 3,300 3,200 3,100 3,000 2,900 2,800 2,700 2,600 2,500 2,400 2,300 2,200 2,100 2,000 1,900 1,800 1,700 1,600 1,500 1,400 1,300 1,200 1,100 1,000 900 800 700 600 500 Paleozoic Period Siderian Rhyacian Orosirian Statherian Calymmian Ectasian Stenian Tonian Cryogenian Ediacaran Eoarchean Paleoarchean Mesoarchean Neoarchean Era Paleoproterozoic Mesoproterozoic Neoproterozoic Eon Archean Proterozoic Pass Lake Kama Hill Sibley Group Sediments (Sibley Basin, Thunder Bay Area, ON) McGrath Gneiss McGrath Complex (EC MN) Metamorphic and cataclastic event Formation Formation Outan Island Formation Nipigon Formation Recent Era of Great Mid-continent Basin Formation (MI, IL, IA, IN, KY, MO) 2 inches Marshfield Archean Gneiss (C WI) Linwood Archean Migmatite (C WI) Sudbury Dike Swarm (SE ON) Quinnesec Formation Intrusions (NE WI) Quinnesec Formation Metamorphism (NE WI) Hatfield Gneiss (WC WI) Pre-Quinnesec Formations deposited (NE WI) Upper Rove Formation Baraboo Quartzite LEGEND (Sibley Peninsula, Thunder Bay, ON) Gray granodioritic phase Montevideo Gneiss (SW MN) Red granite phase Montevideo Gneiss -
Changes in Stratigraphic Nomenclature by the U.S. Geological Survey, 1978
Changes in Stratigraphic Nomenclature by the U.S. Geological Survey, 1978 GEOLOGICAL SURVEY BULLETIN 1482-A Changes in Stratigraphic Nomenclature by the U.S. Geological Survey, 1978 By NORMAN F. SOHL andWILNA B. WRIGHT CONTRIBUTIONS TO STRATIGRAPHY GEOLOGICAL SURVEY BULLETIN 1482-A UNITED STATES GOVERNMENT PRINTING OFFICE, WASHINGTON : 1979 UNITED STATES DEPARTMENT OF THE INTERIOR CECIL D. ANDRUS, Secretary GEOLOGICAL SURVEY H. William Menard, Director Library of Congress Catalog-card No. 80-600040 For sale by Superintendent of Documents, LT.S. Government Printing Office Washington, D.C. 20402 Stock Number 024-001-03302-0 CONTENTS Page Introduction.............................................. Al Listing of nomenclatural changes............................... 3 References cited ........................................ 50 Stratigraphic revision of lower Pleistocene marine deposits of North and South Carolina, by Blake W. Black welder ............... 52 Beaucoup Formation, a new Upper Devonian stratigraphic unit in the central Brooks Range, northern Alaska, by J. Thomas Dutro, Jr., William P. Brosge', Hillard N. Reiser, and Robert L. Detterman ..................... 62 Stoney Fork Member (new name) of the Breathitt Formation in southeasternmost Kentucky, by Russell G. Ping and Charles L. Rice ...................................... 70 Age of Greylock Schist in western Massachusetts, by Nicholas M. Ratcliffe ................................... 77 Adoption and redefinition of the Sherman Marble and regional correlations of Plymouth- and Sherman-type -
Pre-Pennsylvanian Stratigraphy of Nebraska
University of Nebraska - Lincoln DigitalCommons@University of Nebraska - Lincoln Earth and Atmospheric Sciences, Department Papers in the Earth and Atmospheric Sciences of 12-1934 PRE-PENNSYLVANIAN STRATIGRAPHY OF NEBRASKA Alvin Leonard Lugn University of Nebraska-Lincoln Follow this and additional works at: https://digitalcommons.unl.edu/geosciencefacpub Part of the Earth Sciences Commons Lugn, Alvin Leonard, "PRE-PENNSYLVANIAN STRATIGRAPHY OF NEBRASKA" (1934). Papers in the Earth and Atmospheric Sciences. 360. https://digitalcommons.unl.edu/geosciencefacpub/360 This Article is brought to you for free and open access by the Earth and Atmospheric Sciences, Department of at DigitalCommons@University of Nebraska - Lincoln. It has been accepted for inclusion in Papers in the Earth and Atmospheric Sciences by an authorized administrator of DigitalCommons@University of Nebraska - Lincoln. BULLETIN OF THE AMERICAN ASSOCIATION OF PETROLEUM GEOLOGISTS VOL. 18. NO 12 'DECEMBER, 1934). PP 1597-1631, 9 FIGS PRE-PENNSYLVANIAN STRATIGRAPHY OF NEBRASKA1 A. L. LUGN2 liincoln, Nebraska ABSTRACT Sioux quartzite, granite, and schistose metamorphic rocks have been recognized in the pre-Cambrian. The present irregularities, the "basins and highs," on the pre- Cambrian surface are the result of erosion and a long structural history. In general succeedingly younger rocks rest unconformably by overlap against the pre-Cambrian "highs." The principal erosional and structural "highs" are: the "Nemaha moun tains," the Cambridge anticline, the Chadron dome, and the Sioux Falls area. "Basins," or saddle-like depressions, occur on the pre-Cambrian surface between the "highs." The largest of these trends from southeast to northwest across the central part of Nebraska. The history of each ridge or "high" is more or less individualistic, but it seems certain that the structural framework of Nebraska came into existence in late pre-Cambrian time and has dominated the structural and depositional history of the state ever since.