DOCSLIB.ORG

Open File 5487 Text

Total Page：16

File Type：pdf, Size：1020Kb

Download full-text PDF Read full-text
Open File 5487 Text GEOLOGICAL SURVEY OF CANADA OPEN FILE 5487 Geology of Quiet Lake and Finlayson Lake map areas, south-central Yukon – An early interpretation of bedrock stratigraphy and structure D.J. Tempelman-Kluit 2012 GEOLOGICAL SURVEY OF CANADA OPEN FILE 5487 Geology of Quiet Lake and Finlayson Lake map areas, south-central Yukon – An early interpretation of bedrock stratigraphy and structure D.J. Tempelman-Kluit 2012 ©Her Majesty the Queen in Right of Canada 2012 doi:10.4095/291931 This publication is available for free download through GEOSCAN (http://geoscan.ess.nrcan.gc.ca/). Recommended citation Tempelman-Kluit, D.J., 2012. Geology of Quiet Lake and Finlayson Lake map areas, south-central Yukon – An early interpretation of bedrock stratigraphy and structure; Geological Survey of Canada, Open File 5487, doi:10.4095/291931 Publications in this series have not been edited; they are released as submitted by the author. ii iii PREFACE Quiet Lake and Finlayson Lake map areas include the heart of the Pelly Mountains. They provide excellent bedrock exposure of the north-central Canadian part of the orogen called the North American Cordillera. They comprise late Proterozoic to early Mesozoic platform and outer shelf strata of ancient North America that were shortened during Mesozoic folding and thrust faulting. These strata are structurally overlain by thrust slices of metamorphosed Paleozoic sedimentary, volcanic and gneissic rocks that originated far from this continent. Both the in-place and overthrust rocks were intruded by plutons of late Mesozoic age. The map areas are bisected diagonally by the Tintina Trench which is underlain by a dextral strike-slip fault with 450 km of post-Cretaceous displacement. This Open File report presents a general description of the regional stratigraphy of the two map areas and an interpretation of structure, metamorphism and igneous history as they were understood in the early 1980s. It builds upon field work dating back to Operation Pelly, a large and wide-ranging reconnaissance survey in central Yukon begun by the Geological Survey of Canada in 1958. The field observations upon which the stratigraphic units are based were principally made between 1973 and 1976. The report describes principal structures and develops a comprehensive structural interpretation with deductions of the relative timing of faults. The mineral deposits are placed in a regional tectonic framework. It is a classic report that extends from field observations to propose correlations of stratigraphy, structural models and imaginative geological hypotheses which can be tested by further geological work. These include the concept of discrete packages of platform stratigraphy overlapped on low-angle thrust faults, and the recognition of internally deformed sheets of allochthonous sedimentary, volcanic and plutonic rock overlying the platform strata. The latter idea resulted in a widely read and acclaimed paper (Tempelman-Kluit, 1979) This report was written in the early 1980s in the traditional „memoir‟ form to accompany 1:250 000 scale maps. At the time of writing the techniques for isotopic dating limited the interpretation of metamorphic rock units and for them this report is no longer relevant. Nevertheless some aspects of the regional tectonic model expounded here have served for 25 years, although many details have contemporary explanation. Following discovery of a copper-zinc sulphide deposits south of Finlayson Lake (1992), a boom in mineral exploration and revision mapping improved the stratigraphic framework northeast of Tintina fault (see Murphy et al., 2006 and references therein). Southwest of Tintina, the regional mapping and descriptions of stratigraphic units (primarily Pelly-Cassiar platform and slope facies) herein remain current. The latter are the prime motive for publishing this unfinished work – to make these descriptions available to subsequent workers. Most of Quiet Lake map area has not seen systematic bedrock mapping during the last 30 years. Steve Irwin Subdivision head Geological Survey of Canada, Vancouver iv GEOLOGY OF QUIET LAKE AND FINLAYSON LAKE (105F, 105G) MAP AREAS, SOUTH-CENTRAL YUKON Abstract The Pelly Mountains in central Yukon expose a cross-section through part of the collision orogen that is the Canadian Cordillera. Elements of this cross-section are the pre-tectonic autochthonous succession, klippen of sheared and metamorphosed allochthonous rocks, thrusts that repeat the autochthonous succession, late tectonic regional metamorphic rocks and associated granite batholiths, and the Tintina fault, a late tectonic dextral strike-slip fault. Late Proterozoic through Triassic shelf strata, six to eight kilometres thick, comprise the autochthonous sequence. They are divided into four main divisions bounded by unconformities or a depositional hiatus. Oldest are Eocambrian and Lower Cambrian shale and siltstone, capped by an argillaceous limestone, which together form the Ketza group. Unconformably above it are Upper Cambrian and Ordovician slate, phyllite and alkaline basalt of the Kechika Group, and Silurian and Devonian siltstone, dolostone and quartz sandstone, of the Askin group. Profound and rapid facies variation characterizes this second division. Also part of this division is the shale-dominated Harvey group, which is time-equivalent to the Kechika and Askin groups. Unconformably above are Upper Devonian and Mississippian black slate and marine felsic volcanic rocks - the Seagull group. The fourth division is thin and restricted in distribution. It includes a Permian and an Upper Triassic siltstone separated by a disconformity. The autochthonous succession extends to, and is like that in, the Cassiar Mountains; it has equivalent units in the northern Rocky Mountains. Broadly it is equivalent to the outer shelf of the North American miogeoclinal wedge. Three assemblages of ductile deformed rocks are thrust over the "in place" succession from the southwest. Although each assemblage is dismembered so that its internal stratigraphy is unknown, the three are not mixed, and exhibit a consistent structural order. Lowest is a mylonite schist, that represents Triassic (and older?) immature clastic rocks and intermediate volcanics. Next is an assemblage of Late Paleozoic amphibolite and serpentinite with flaser limestone. Highest are granodiorite gneiss and schist, the sheared and metamorphosed remnant of Paleozoic intrusive rocks. K-Ar ages show that all three assemblages were sheared and metamorphosed during the Late Triassic and Early Jurassic. Four northeast directed thrusts repeat the "in place" beds beneath, and northeast of, the transported strata. Cumulative shortening is on the order of 100 kilometres. Each thrust carries a slice two or three kilometres thick and is itself deformed by newer thrusts, folds and tear faults. The thrusts, interpreted as splays of one basal detachment, formed in sequence from southwest to northeast during the Late Jurassic and Early Cretaceous. On the southwest the structurally imbricated "in place" strata and the transported rocks above them, were regionally metamorphosed about the late Early Cretaceous to form the Big Salmon and Mink complexes. At the same time partial melting produced granites like the Quiet Lake, Nisutlin and Big Salmon batholiths. The metamorphic rocks are exposed in large structural culminations centred roughly on the batholiths; these fold early thrusts, giving a structural relief near eight kilometres. Some granites may be cut by thrusts below and the metamorphic culminations may be severed by the basal detachment. Tintina fault is the locus of 450 kilometres of dextral slip as shown by offset of the autochthonous succession. Movement followed intrusion of most or all of the late tectonic granites. Movement may have been ceased by Early Eocene when fluvial conglomerate was laid down along the fault. Because its slip coincides with shortening in the Selwyn and Mackenzie mountains the Tintina is considered to be a listric branch of the same detachment surface on which shortening was accomplished. It is viewed as a giant tear fault in the detached slab. A model in which the Pelly Mountains are the product of Middle Jurassic oblique collision of a volcanic arc with the then-western margin of ancient North America fits these data. Sheared metamorphic rocks, which are interpreted as the arc‟s subduction complex, were obducted in the Late Jurassic. Cretaceous imbrication and dextral translation of the autochthonous rocks are responses to obduction, while metamorphism and plutonism reflect heating of the overridden and imbricated "in place" slab. v FORWARD This final report from fieldwork for the Quiet Lake-Finlayson reconnaissance mapping project has been changed from its original intended 'memoir' format to an 'open file'. The open-file series allows publication of this nearly finished manuscript with the author's original interpretations. A casualty of the change is that stratigraphic unit descriptions which were intended to formalize 12 new formations are here presented as informal formations (because an open file is not recognized as a formal publication by the North American Stratigraphic Code). Despite a long delay in publication this final report contributes new information to the understanding of Yukon geology. The five maps at 1:50 000 scale and stratigraphic descriptions of units comprising the Pelly-Cassiar platform in Yukon were not previously available. The description of structures from field observations supported by annotated
Load more

Recommended publications
  • 1 KECK PROPOSAL: Eocene Tectonic Evolution of the Teton-Absaroka
    KECK PROPOSAL: Eocene Tectonic Evolution of the Teton-Absaroka Ranges, Wyoming (Year 2) Project Leaders: John Craddock (Macalester College; [email protected]) and Dave Malone (Illinois State University; [email protected]) Host Institution: Macalester College, St. Paul, MN Project Dates: ~July 15-August 14, 2011 Student Prerequisites: Structural Geology, Sedimentology. Preamble: This project is an expansion of a 2010 Keck project that was funded at a reduced level (Craddock, 3 students); Malone and 4 students participated with separate funding. We completed or are currently working on three 2010 projects: 1. Structure, geochemistry and geochronology (U-Pb zircon) of carbonate pseudotachylite injection, White Mtn. (J. Geary, Macalester; note that this was not part of last year’s proposal but a new discovery in 2010 caused us to redirect our efforts), 2. Calcite twinning strains within the S. Fork detachment allochthon, northwest, WY (K. Kravitz, Smith; note because of a heavy snow pack in the Tetons this past summer, we chose a different structure to study), and 3. Provenance of heavy minerals and detrital zircon geochronology, Eocene Absaroka volcanics, northwest, WY (R. McGaughey, Carleton). We did not sample the footwall folds proposed in the previous proposal (under snow) and will focus on this project and mapping efforts of White Mountain and the 40 x 10 km S. Fork detachment area near Cody, WY, in part depending on the results (calcite strains, detrital zircons) of the 2010-11 effort. All seven students are working on the detrital zircon geochronology project, and two abstracts are accepted at the 2011 Denver GSA meeting. Overview: This proposal requests funding for 2 faculty to engage 6 students researching a variety of outstanding problems in the tectonic evolution of the Sevier-Laramide orogens as exposed in the Teton and Absaroka ranges in northwest Wyoming.
    [Show full text]
  • Special Report for Puget Sound Policymakers
    PUGET SOUND INSTITUTE UNIVERSITY OF WASHINGTON | TACOMA TIMELY, LOCAL STORIES ABOUT ECOSYSTEM RECOVERY SPECIAL REPORT FOR PUGET SOUND POLICYMAKERS 2020 CLIMATE ISSUE Introduction Welcome to the 2020 edition of Salish Sea Currents magazine. This is the fourth issue of the magazine, and the first one dedicated to a single theme. All of the stories in this report address the impact of climate change on the Salish Sea ecosystem. about us While this collection is not a report about climate change itself — we health the of the Salish Sea. We journey by boat through one of the will not describe the underlying causes of global warming or even talk region’s last remaining tidal forests and look at how sea level rise about how to reduce greenhouse gasses — it is a lens through which to could threaten hundreds of millions of dollars in habitat restoration view current ecosystem recovery efforts. projects. We report new discoveries about declining kelp beds and break important news about ocean acidification. In all, we offer 12 About The Puget Sound Institute Taken individually, these stories represent some of the most critical compelling stories, each influenced in some way by climate change research being conducted in the Salish Sea. In that spirit, they cross a The Puget Sound Institute (PSI) was established at the University of Washington to identify and catalyze and global CO2 emissions. wide variety of topics, from shoreline armoring to endangered orcas. the science driving Puget Sound and Salish Sea ecosystem recovery. Since its founding in 2010, PSI has Taken together, they are further evidence, if any were needed, that You will notice that this year’s issue is divided into four sections: advanced our understanding of the region through synthesis, original research and communication in climate change affects almost everything we do.
    [Show full text]
  • Chapter 17. Quartzite Gravel Northwest Wyoming
    Chapter 17 Quartzite Gravel of Northwest Wyoming The quartzites of southwest Montana and adjacent Idaho extend eastward into Wyoming1 in a semi-continuous belt, as shown on Figure 16.1 of the previous chapter. This chapter will describe those deposits. Quartzite Gravel Lag John Hergenrather and I have found scattered surficial quartzites from near Interstate 15 in northeastern Idaho, just south of Lima, Montana, eastward to the northern Teton Mountains and over a four-wheel drive pass between Yellowstone and Grand Teton National Parks. These quartzites seem to have mostly formed a thin layer or lag deposit on the surface or were reworked by local mountain glaciation. This lag rep- resents the red hashed area in Figure 16.1. Quartzites on Top of the Northern Teton Mountains Probably the most fascinating quartz- ite location is on top of the northern Teton Mountains! Brent Carter and I took a Figure 17.1. Slightly dipping limestone at the top three day round trip hike to the top of Red of Red Mountain. Mountain in the northern Teton Moun- tains, 10,177 feet (3,102 m) msl!2,3 Red Mountain and Mount Moran (12,605 feet, 3,842 m msl) represent remnants of a flat-topped planation surface.2 Red Mountain is composed of slightly tilted limestones (Figure 17.1), while Mount Moran is composed of granite or gneiss with a 50-foot (15 m) thick cap of Flathead Sandstone on top (see Figure 33.7). The quartzites on top of Red Mountain are mainly a thin lag mixed with angular lime- stone cobbles and boulders (Figure 17.2).
    [Show full text]
  • Northeast Queensland, Australia NI 43-101 Report
    Draft Only Houston Seattle Section 1.0: Iron Glenn Project: Northeast Queensland, Australia NI 43-101 Report for: Iron Glen Holdings Limited Southport, Queensland Australia By Michael D. Campbell, P.G., P.H. and Jeffrey D. King, P.G. I2M Associates, LLC Houston, Texas and Seattle, Washington February 9, 2011 Houston Seattle Section 2.0 Table of Contents Page 3.0 Summary………………………………………………… 1 4.0 Introduction ……………………..……………………… 2 4.1 Location of Property ………………………. 2 4.2 Scope of Work ……………………………… 3 4.3 Iron Glen Tenement ……………………….. 4 4.4 Units ………………………………………… 6 5.0 Reliance on Other Experts ……….…………................. 6 6.0 Property Description and Location ….………………… 8 6.1 General Description ……………………….. 8 6.2 Property Ownership and Financial Obligations ………………………………… 10 6.3 Current Royalties & Agreements on Land Access …………………………........... 11 6.4 Permitting ………………………………….. 15 6.5 Environmental Issues ………………………15 7.0 Accessibility, Climate, Local Resources, Infrastructure and Physiography ….………….………. 16 7.1 Topography, Elevation, and Vegetation ...... 16 7.2 Accessibility to Properties …………………. 19 7.3 Local Resources ……………………………. 20 7.4 Climate and Seasonal Operations ……..….. 20 7.5 Available Infrastructure …………..……….. 23 8.0 History …………………………………….…………… 23 8.1 Previous Activities ………………...……….. 23 8.2 Previous Exploration Results ……………... 25 9.0 Geology …………………………………………………. 28 1810 Elmen Street, Houston, Texas 77019 Telephone: 713-807-0021 - Fax: 713-807-0985 E-mail: [email protected] – Website: http://www.I2MAssociates.com Page ii Houston Seattle 9.1 Regional Geology ……………………….….. 28 9.2 Local Geology ……………………………… 29 10.0 Deposit Types …………………………..……………… 32 10.1 Contact Metasomatic Deposits …………… 32 10.2 Magnetite as Gangue Mineral ……………. 33 11.0 Mineralization …………………………………………. 34 11.1 Type of Mineralization ……………………. 34 11.2 Magnetics Modeling for Resource Estimates 35 12.0 Exploration …………………………………………….
    [Show full text]
  • GEOHYDROLOGY of TERTIARY ROCKS in the GREEN RIVER STRUCTURAL BASIN in WYOMING, UTAH, and COLORADO by Lawrence J
    GEOHYDROLOGY OF TERTIARY ROCKS IN THE GREEN RIVER STRUCTURAL BASIN IN WYOMING, UTAH, AND COLORADO by Lawrence J. Martin U.S. GEOLOGICAL SURVEY Water-Resources Investigations Report 92-4164 Prepared in cooperation with the WYOMING STATE ENGINEER Cheyenne, Wyoming 1996 U.S. DEPARTMENT OF THE INTERIOR BRUCE BABBITT, Secretary U.S. GEOLOGICAL SURVEY Gordon P. Eaton, Director The use of trade, product, industry, or firm names i$ for descriptive purposes only and does not imply endorsement by thelU.S. Government. For additional information Copies of this report can be write to: purchased from: District Chief U.S. Geological Survey U.S. Geological Survey, WRD Branch of Information Services 2617 E. Lincolnway, Suite B Box 25286, Denver Federal Center Cheyenne, Wyoming 82001-5662 Denver, Colorado 80225 CONTENTS Page Abstract ................................................................................................................................................................................ 1 Introduction .......................................................................................................................................................................... 1 Purpose and scope .................................................................................................................................................... 3 Criteria for data selection ......................................................................................................................................... 3 Previous investigations ............................................................................................................................................
    [Show full text]
  • Fen Mapping for the Bridger-Teton National Forest
    Fen Mapping for the Bridger-Teton National Forest November 2018 CNHP’s mission is to preserve the natural diversity of life by contributing the essential scientific foundation that leads to lasting conservation of Colorado's biological wealth. Colorado Natural Heritage Program Warner College of Natural Resources Colorado State University 1475 Campus Delivery Fort Collins, CO 80523 Report Prepared for: Bridger-Teton National Forest 340 N. Cache Jackson, WY 83001 Recommended Citation: Smith, G. and J. Lemly. 2018. Fen Mapping for the Bridger-Teton National Forest. Colorado Natural Heritage Program, Colorado State University, Fort Collins, Colorado. Front Cover: © Colorado Natural Heritage Program Fen Mapping for the Bridger-Teton National Forest Gabrielle Smith and Joanna Lemly Colorado Natural Heritage Program Warner College of Natural Resources Colorado State University Fort Collins, Colorado 80523 November 2018 Page intentionally left blank. EXECUTIVE SUMMARY The Bridger-Teton National Forest (BTNF) covers 3.4 million acres within the Upper Green and Snake Headwaters River Basins in northwest Wyoming. The diverse geography of the BTNF creates an equally diverse set of wetlands that provide important ecological services to both BTNF and lands downstream. Organic soil wetlands known as fens are an irreplaceable resource that the U.S. Forest Service has determined should be managed for conservation and restoration. Fens are defined as groundwater-fed wetlands with organic soils that typically support sedges and low stature shrubs. In the arid west, organic soil formation can take thousands of years. Long-term maintenance of fens requires maintenance of both the hydrology and the plant communities that enable fen formation. In 2012, the U.S.
    [Show full text]
  • Summary Report on the Natural History of Kerguelen Island
    SUMMARY REPORT ON THE NATURAE HISTORY OF KERGUELEN ISLAND.* By J. H. KIDDER. M. D. PASSED ASSISTANT SURGEON U. S. NAVY. Navy-Yard, New York, June 12, 1875. Sir: Inclosed herewith I have the honor to forward a sum¬ mary report upon the natural history of Kerguelen Island, as observed by me, omitting all technical details, excepting specific names, where these are known. I have nearly finished rewriting the measurements, descrip¬ tions, and field-notes collected concerning the birds of the island, which Dr. E. Cones, United States Army, has kindly undertaken to edit for me. It has been proposed to me to pub¬ lish this treatise as one of the Bulletins of the National Museum, and, as it is likely to be of interest only to ornithologists, I respectfully request your permission to do so. Very respectfully, J. H. KIDDER, Passed Assistant Surgeon, U. 8. Navy. Surg.-Gen. J. Beale U. S. Navy. '•a The natural-history specimens collected on Kerguelen Island, in connection with the Transit of Venus expedition, having arrived at New York, per sailing-bark from Cape Town, on May 21, have been forwarded to the Smithsonian Institution, and * A detailed report of the natural history of the expedition to Kerguelen Island will soon be published under the authority of the Smithsonian Insti¬ tution. 727 > '* /• V\ 728 SANITARY REPORTS. found to have sustained no material damage by the voyage. 1 am, therefore, now in a position to report briefly the general scientific results of the expedition, with reference to the duty to which I was detailed.
    [Show full text]
  • Eocene Green River Formation, Western United States
    Synoptic reconstruction of a major ancient lake system: Eocene Green River Formation, western United States M. Elliot Smith* Alan R. Carroll Brad S. Singer Department of Geology and Geophysics, University of Wisconsin, 1215 West Dayton Street, Madison, Wisconsin 53706, USA ABSTRACT Members. Sediment accumulation patterns than being confi ned to a single episode of arid thus refl ect basin-center–focused accumula- climate. Evaporative terminal sinks were Numerous 40Ar/39Ar experiments on sani- tion rates when the basin was underfi lled, initially located in the Greater Green River dine and biotite from 22 ash beds and 3 and supply-limited accumulation when the and Piceance Creek Basins (51.3–48.9 Ma), volcaniclastic sand beds from the Greater basin was balanced fi lled to overfi lled. Sedi- then gradually migrated southward to the Green River, Piceance Creek, and Uinta ment accumulation in the Uinta Basin, at Uinta Basin (47.1–45.2 Ma). This history is Basins of Wyoming, Colorado, and Utah Indian Canyon, Utah, was relatively con- likely related to progressive southward con- constrain ~8 m.y. of the Eocene Epoch. Mul- stant at ~150 mm/k.y. during deposition of struction of the Absaroka Volcanic Prov- tiple analyses were conducted per sample over 5 m.y. of both evaporative and fl uctuat- ince, which constituted a major topographic using laser fusion and incremental heating ing profundal facies, which likely refl ects the and thermal anomaly that contributed to a techniques to differentiate inheritance, 40Ar basin-margin position of the measured sec- regional north to south hydrologic gradient. loss, and 39Ar recoil.
    [Show full text]
  • Water Development Office 6920 YELLOWTAIL ROAD TELEPHONE: (307) 777-7626 CHEYENNE, WY 82002 FAX: (307) 777-6819 TECHNICAL MEMORANDUM
    THE STATE OF WYOMING Water Development Office 6920 YELLOWTAIL ROAD TELEPHONE: (307) 777-7626 CHEYENNE, WY 82002 FAX: (307) 777-6819 TECHNICAL MEMORANDUM TO: Water Development Commission DATE: December 13, 2013 FROM: Keith E. Clarey, P.G. REFERENCE: Snake/Salt River Basin Plan Update, 2012 SUBJECT: Available Groundwater Determination – Tab XI (2012) Contents 1.0 Introduction .............................................................................................................................. 1 2.0 Hydrogeology .......................................................................................................................... 4 3.0 Groundwater Development .................................................................................................... 15 4.0 Groundwater Quality ............................................................................................................. 21 5.0 Geothermal Resources ........................................................................................................... 22 6.0 Groundwater Availability ...................................................................................................... 22 References ..................................................................................................................................... 23 Appendix A: Figures and Table ....................................................................................................... i 1.0 Introduction This 2013 Technical Memorandum is an update of the September 10, 2003,
    [Show full text]
  • Attachment J Assessment of Existing Paleontologic Data Along with Field Survey Results for the Jonah Field
    Attachment J Assessment of Existing Paleontologic Data Along with Field Survey Results for the Jonah Field June 12, 2007 ABSTRACT This is compilation of a technical analysis of existing paleontological data and a limited, selective paleontological field survey of the geologic bedrock formations that will be impacted on Federal lands by construction associated with energy development in the Jonah Field, Sublette County, Wyoming. The field survey was done on approximately 20% of the field, primarily where good bedrock was exposed or where there were existing, debris piles from recent construction. Some potentially rich areas were inaccessible due to biological restrictions. Heavily vegetated areas were not examined. All locality data are compiled in the separate confidential appendix D. Uinta Paleontological Associates Inc. was contracted to do this work through EnCana Oil & Gas Inc. In addition BP and Ultra Resources are partners in this project as they also have holdings in the Jonah Field. For this project, we reviewed a variety of geologic maps for the area (approximately 47 sections); none of maps have a scale better than 1:100,000. The Wyoming 1:500,000 geology map (Love and Christiansen, 1985) reveals two Eocene geologic formations with four members mapped within or near the Jonah Field (Wasatch – Alkali Creek and Main Body; Green River – Laney and Wilkins Peak members). In addition, Winterfeld’s 1997 paleontology report for the proposed Jonah Field II Project was reviewed carefully. After considerable review of the literature and museum data, it became obvious that the portion of the mapped Alkali Creek Member in the Jonah Field is probably misinterpreted.
    [Show full text]
  • HYDROLOGIC CONDITIONS in the JACOBS CREEK, STONY BROOK, and BEDEN BROOK DRAINAGE BASINS, WEST-CENTRAL NEW JERSEY, 1986-88 By
    HYDROLOGIC CONDITIONS IN THE JACOBS CREEK, STONY BROOK, AND BEDEN BROOK DRAINAGE BASINS, WEST-CENTRAL NEW JERSEY, 1986-88 By Eric Jacobsen, Mark A. Hardy, and Barbara A. Kurtz U.S. GEOLOGICAL SURVEY Water-Resources Investigations Report 91-4164 Prepared in cooperation with the NEW JERSEY DEPARTMENT OF ENVIRONMENTAL PROTECTION AND ENERGY West Trenton, New Jersey 1993 U.S. DEPARTMENT OF THE INTERIOR BRUCE BABBITT, Secretary U.S. GEOLOGICAL SURVEY Dallas L. Peck, Director For additional information Copies of this report can be write to: purchased from: District Chief U.S. Geological Survey U.S. Geological Survey Books and Open-File Reports Section Mountain View Office Park Box 25425 Suite 206 Federal Center 810 Bear Tavern Road Denver, CO 80225 West Trenton, NJ 08628 CONTENTS Page Abstract.............................................................. 1 Introduction.......................................................... 2 Purpose and scope................................................ 2 Previous studies................................................. 2 Acknowledgments.................................................. 2 Description of study area............................................. 4 Location and setting............................................. 4 Climate.......................................................... 4 Geology.......................................................... 6 Hydrogeology..................................................... 6 Methods of investigation.............................................. 8 Ground
    [Show full text]
  • Geochronology of the Trans-Pecos Texas Volcanic Field John Andrew Wilson, 1980, Pp
    New Mexico Geological Society Downloaded from: http://nmgs.nmt.edu/publications/guidebooks/31 Geochronology of the Trans-Pecos Texas volcanic field John Andrew Wilson, 1980, pp. 205-211 in: Trans Pecos Region (West Texas), Dickerson, P. W.; Hoffer, J. M.; Callender, J. F.; [eds.], New Mexico Geological Society 31st Annual Fall Field Conference Guidebook, 308 p. This is one of many related papers that were included in the 1980 NMGS Fall Field Conference Guidebook. Annual NMGS Fall Field Conference Guidebooks Every fall since 1950, the New Mexico Geological Society (NMGS) has held an annual Fall Field Conference that explores some region of New Mexico (or surrounding states). Always well attended, these conferences provide a guidebook to participants. Besides detailed road logs, the guidebooks contain many well written, edited, and peer-reviewed geoscience papers. These books have set the national standard for geologic guidebooks and are an essential geologic reference for anyone working in or around New Mexico. Free Downloads NMGS has decided to make peer-reviewed papers from our Fall Field Conference guidebooks available for free download. Non-members will have access to guidebook papers two years after publication. Members have access to all papers. This is in keeping with our mission of promoting interest, research, and cooperation regarding geology in New Mexico. However, guidebook sales represent a significant proportion of our operating budget. Therefore, only research papers are available for download. Road logs, mini-papers, maps, stratigraphic charts, and other selected content are available only in the printed guidebooks. Copyright Information Publications of the New Mexico Geological Society, printed and electronic, are protected by the copyright laws of the United States.
    [Show full text]