Asteroid Fossils from the Upper Jurassic of South-Central Montana
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Mineral Resource Assessment of the Custer National Forest in The
U.S. DEPARTMENT OF THE INTERIOR U.S. GEOLOGICAL SURVEY Mineral Resource Assessment of the Custer National Forest in the Pryor Mountains, Carbon County, South-Central Montana by Bradley S. Van Gosen1 , Anna B. Wilson1 , and Jane M. Hammarstrom2, with a section on GEOPHYSICS by Dolores M. Kulik1 Open-File Report 96-256 1996 This report is preliminary and has not been reviewed for conformity with U.S. Geological Survey editorial standards or with the North American Stratigraphic Code. Any use of trade, product, or firm names is for descriptive purposes only and does not imply endorsement by the U.S. Government. 1 U.S. Geological Survey, Denver, Colorado 2 U.S. Geological Survey, Reston, Virginia CONTENTS Page Abstract .................................................. 1 Introduction ................................................ 2 Geology of the Pryor Mountains ................................... 7 Regional and local structural setting ............................. 7 Stratigraphy .......................................... 11 Uranium-vanadium deposits of the Pryor Mountains ...................... 13 Mining history ......................................... 13 Geology of the host collapse structures .......................... 17 Mineral deposits and associated alteration ........................ 21 Size, grade, and distribution of the deposits ....................... 26 Origin of the deposits .................................... 26 Exploration criteria and previous reconnaissance studies ................ 29 Geophysics by Dolores M. Kulik -
Geology and Petrology of the Devils Tower, Missouri Buttes, and Barlow Canyon Area, Crook County, Wyoming Don L
University of North Dakota UND Scholarly Commons Theses and Dissertations Theses, Dissertations, and Senior Projects 1980 Geology and petrology of the Devils Tower, Missouri Buttes, and Barlow Canyon area, Crook County, Wyoming Don L. Halvorson University of North Dakota Follow this and additional works at: https://commons.und.edu/theses Part of the Geology Commons Recommended Citation Halvorson, Don L., "Geology and petrology of the Devils Tower, Missouri Buttes, and Barlow Canyon area, Crook County, Wyoming" (1980). Theses and Dissertations. 119. https://commons.und.edu/theses/119 This Dissertation is brought to you for free and open access by the Theses, Dissertations, and Senior Projects at UND Scholarly Commons. It has been accepted for inclusion in Theses and Dissertations by an authorized administrator of UND Scholarly Commons. For more information, please contact [email protected]. GEOLOGY AND PETROLOGY OF THE DEVILS TOWER, MISSOURI BUTTES, AND BARLOW CANYON AREA, CROOK c.OUNTY, WYOMING by Don L. Halvorson Bachelor of Science, University of Colorado, 1965 Master of Science Teaching, University of North Dakota, 1971 A Dissertation Submitted to the Graduate Faculty of the University of North Dakota in partial fulfillment of the requirements for the degree of Doctor of Philosophy Grand Forks, North Dakota May 1980 Th:ls clisserratio.1 submitted by Don L. Halvol'.'son in partial ful fillment of the requirements fo1· the Degree of Doctor of Philosophy from the University of North Dakota is hereby approved by the Faculty Advisory Committee under whora the work has been done. This dissertation meets the standards for appearance aud con forms to the style and format requirements of the Graduate School of the University of North Dakota, and is hereby approved. -
Evidence of Pachyostosis in the Cryptocleidoid Plesiosaur Tatenectes Laramiensis from the Sundance Formation of Wyoming Hallie P
Marshall University Marshall Digital Scholar Biological Sciences Faculty Research Biological Sciences 2010 Evidence of pachyostosis in the cryptocleidoid plesiosaur Tatenectes laramiensis from the Sundance Formation of Wyoming Hallie P. Street Marshall University F. Robin O’Keefe Marshall University, [email protected] Follow this and additional works at: http://mds.marshall.edu/bio_sciences_faculty Part of the Animal Sciences Commons, and the Ecology and Evolutionary Biology Commons Recommended Citation Street, H. P., and F. R. O’Keefe. 2010. Evidence of pachyostosis in the cryptocleidoid plesiosaur Tatenectes laramiensis from the Sundance Formation of Wyoming. Journal of Vertebrate Paleontology 30(4):1279–1282. This Article is brought to you for free and open access by the Biological Sciences at Marshall Digital Scholar. It has been accepted for inclusion in Biological Sciences Faculty Research by an authorized administrator of Marshall Digital Scholar. For more information, please contact [email protected], [email protected]. EVIDENCE OF PACHYOSTOSIS IN THE CRYPTOCLEIDOID PLESIOSAUR TATENECTES LARAMIENSIS FROM THE SUNDANCE FORMATION OF WYOMING HALLIE P. STREET and F. ROBIN O'KEEFE; Department of Biological Sciences, Marshall University, One John Marshall Drive, Huntington, West Virginia 25755, U.S.A., [email protected], [email protected] INTRODUCTION In this paper we present evidence for pachyostosis in the cryptocleidoid plesiosaur Tatenectes laramiensis Knight, 1900 (O'Keefe and Wahl, 2003a). Pachyostosis is not common in plesio- saurs and is particularly rare in non-pliosaurian plesiosaurs, although enlarged gastralia were first recognized in Tatenectes by Wahl (1999). This study aims to investigate the nature of the dispro- portionately large gastralia of Tatenectes m greater depth, based on new material. -
Quiz 12 Bonus 2 (9:30-9:35 AM) UNIVERSITY of SOUTH ALABAMA
Quiz 12 Bonus 2 (9:30-9:35 AM) UNIVERSITY OF SOUTH ALABAMA GY 112: Earth History Lectures 32 and 33: Mesozoic Sedimentation Instructor: Dr. Douglas W. Haywick Last Time Mesozoic Tectonics A) The Triassic B) The Jurassic C) The Cretaceous (web notes 31) Mesozoic Tectonics Tectonics in North America during the Mesozoic was dominated by docking events involving terranes. Ultimately, continents grow bigger by scooping up geo-crap in their drift direction (Accretionary tectonics) Sonoman Orogeny Mesozoic Tectonics Into the Triassic, many more “terranes” (mostly island arcs) began to be scooped up by North America as it drifted WNW •Brooke Range Terrane (Alaska) •Stikine Terrane (British Columbia) •Sonoma Terrane (Nevada) Mesozoic Tectonics In the Jurassic, we start to see terranes with mixed lithologies docking with North America (e.g., Klamath Terrane) •Major (felsic) intrusions begin Mesozoic Tectonics In the Cretaceous, more hits and more intrusions. More uplift •Wrangellia Terrane docks What’s the Point? The Appalachians and Cordilleran Mountains were both formed via compressional tectonic events. Appalachians formed through collisions with other continents Cordilleran Mts. formed via accretionary tectonics Today’s Agenda Mesozoic Sedimentation A) Triassic Sedimentation (Breakup of Pangaea) B) Jurassic Sedimentation (Birth of the Atlantic Ocean) C) Cretaceous Sedimentation (Creation of the Coastal Plain Province) D) Mesozoic-Cenozoic climate (Greenhouse-Icehouse Earth Transition) (web notes 32) Mesozoic Paleogeography Mesozoic Sedimentation -
A Preliminary Assessment of Paleontological Resources at Bighorn Canyon National Recreation Area, Montana and Wyoming
A PRELIMINARY ASSESSMENT OF PALEONTOLOGICAL RESOURCES AT BIGHORN CANYON NATIONAL RECREATION AREA, MONTANA AND WYOMING Vincent L. Santucci1, David Hays2, James Staebler2 And Michael Milstein3 1National Park Service, P.O. Box 592, Kemmerer, WY 83101 2Bighorn Canyon National Recreation Area, P.O. Box 7458, Fort Smith, MT 59035 3P.O. Box 821, Cody, WY 82414 ____________________ ABSTRACT - Paleontological resources occur throughout the Paleozoic and Mesozoic formations exposed in Bighorn Canyon National Recreation Area. Isolated research on specific geologic units within Bighorn Canyon has yielded data on a wide diversity of fossil forms. A comprehensive paleonotological survey has not been previously undertaken at Bighorn Canyon. Preliminary paleontologic resource data is presented in this report as an effort to establish baseline data. ____________________ INTRODUCTION ighorn Canyon National Recreation Area (BICA) consists of approximately 120,000 acres within the Bighorn Mountains of north-central Wyoming and south-central Montana B (Figure 1). The northwestern trending Bighorn Mountains consist of over 9,000 feet of sedimentary rock. The predominantly marine and near shore sedimentary units range from the Cambrian through the Lower Cretaceous. Many of these formations are extremely fossiliferous. The Bighorn Mountains were uplifted during the Laramide Orogeny beginning approximately 70 million years ago. Large volumes of sediments, rich in early Tertiary paleontological resources, were deposited in the adjoining basins. This report provides a preliminary assessment of paleontological resources identified at Bighorn Canyon National Recreation Area. STRATIGRAPHY The stratigraphic record at Bighorn Canyon National Recreation Area extends from the Cambrian through the Cretaceous (Figure 2). The only time period during this interval that is not represented is the Silurian. -
Foraging Ecology of Cougars in the Pryor Mountains of Wyoming and Montana
Utah State University DigitalCommons@USU All Graduate Theses and Dissertations Graduate Studies 5-2014 Foraging Ecology of Cougars in the Pryor Mountains of Wyoming and Montana Linsey Blake Utah State University Follow this and additional works at: https://digitalcommons.usu.edu/etd Part of the Biology Commons Recommended Citation Blake, Linsey, "Foraging Ecology of Cougars in the Pryor Mountains of Wyoming and Montana" (2014). All Graduate Theses and Dissertations. 3292. https://digitalcommons.usu.edu/etd/3292 This Thesis is brought to you for free and open access by the Graduate Studies at DigitalCommons@USU. It has been accepted for inclusion in All Graduate Theses and Dissertations by an authorized administrator of DigitalCommons@USU. For more information, please contact [email protected]. FORAGING ECOLOGY OF COUGARS IN THE PRYOR MOUNTAINS OF WYOMING AND MONTANA by Linsey W. Blake A thesis submitted in partial fulfillment of the requirements for the degree of MASTER OF SCIENCE in Wildlife Biology Approved: _________________ __________________ Eric M. Gese Michael L. Wolfe Major Professor Committee Member __________________ __________________ Toni K. Ruth Mark R. McLellan Committee Member Vice President for Research and Dean of the School of Graduate Studies UTAH STATE UNIVERSITY Logan, Utah 2014 ii Copyright © Linsey W. Blake 2014 All Rights Reserved iii ABSTRACT Foraging Ecology of Cougars in the Pryor Mountains of Wyoming and Montana by Linsey W. Blake, Master of Science Utah State University, 2014 Major Professor: Eric M. Gese Department: Wildland Resources Cougars (Puma concolor) are elusive top-level predators and their predation patterns, particularly upon sensitive species, can be a source of concern to wildlife managers. -
Museum's Brochure Here
Your Self Guided Tour To The Fossil Displays and More We hope this brochure makes it easier for LOOK CAREFULLY, at each dinosaur, you to see and enjoy all the exhibits provided but please, by the museum. Included is a map to assist in DO NOT TOUCH! locating all the exhibits and a brief description of what is on display. The dinosaurs are a Museum Hours: major focus of the museum’s exhibits. Everyday 9:00 a.m. - 10:00 p.m. Summer Hours (May-August) Please find the Map on the back 7:00 a.m. - 9:30 p.m. Tours available. cover to locate various displays. For further information about Western or the Natural History Museum please call 307-382-1600 Cenozoic Era Paleozoic Present to 66 million years ago 245 to 570 million years ago Yellowstone has had 3 major Sea deposits phosphates in explosive eruptions. west, red sand deposits in the east. Global extinction of 2 mill. yrs. Uplift of the western U.S. many marine invertebrates. Buffalo, Bull Lake, Pinedale glaciations. 286 mill. yrs. Wind blown sand forms the Mammals dominate the land. Tensleep, Weber, Casper, Minnelusa formations 24 mill. yrs. Sediments from the Miocene (all oil and gas producers). and Pliocene (2 to 24 mill. yrs.) is preserved in central 360 mill. yrs. Shallow sea covers the entire Wyoming Sweetwater Hills state forming the fossil rich area. End of the Laramide Madison Limestone. mountain building episode. 408 mill. yrs. Uplift in southwest 37 mill. yrs. Time of major deposites of Wyoming, diamond bearing coal, oil shale, and trona. -
Idaho Wyoming
Grand Teton NP and John D. Rockefeller, Jr. Memorial Parkway National Park Service Wyoming U.S. Department of the Interior Overview of Digital Geologic Data for Grand Teton NP and John D. Rockefeller, Jr. Memorial Parkway Extent Map NPS Boundary Grand Teton National Park John D. Rockefeller Jr. Memorial Parkway GRTE - Folds ¤£287 YELLOWSTONE NATIONAL PARK anticline, known or certain anticline, approximate anticline, inferred UV47 syncline, known or certain syncline, inferred GRTE - Faults (( (( (( thrust fault, known or certain (( ( UV47 thrust fault, approximate JOHN D. ROCKEFELLER JR (( (( (( (( thrust fault, concealed MEMORIAL PARKWAY Northern Extent normal fault, known or certain normal fault, approximate normal fault, concealed UV32 ¤£89 unknown offset/displacement, queried GRTE - Geologic Contacts known or certain IDAHO Jackson WYOMING approximate Lake concealed UV33 GRAND TETON NATIONAL PARK %% %% %% %% %% %% %% %% %% %% %% %% %% %% %% %% %% %% %% %% %% %% %% %% %% %% %% gradational quadrangle boundary water or shoreline ¤£26 ice or glacial, approximate scratch boundary Jenny GRTE - Mine Point Features Lake à prospects { Driggs adit Ì mine ¤£26 Ç gravel pit ª dry hole GRTE - Glacial Feature Lines ¤£89 glacial linear feature, known or certain GRTE - Geologic Line Features Victor linear feature, known or certain terrace margin, known or certain abandoned channel, known or certain UV390 GRTE - General Trends of Dikes Xmo - Mount Owen Quartz Monzonite and associated pegmatite (early Proterozoic), inferred UV31 GRTE - Linear Geologic -
Sequence Stratigraphy of the Marginal Marine Facies of the Jurassic
Sequence Stratigraphy of the Marginal Marine Facies of the Jurassic Sundance Formation, South Dakota and Wyoming: Implications for Controls of Higher-order Cyclicity in a Greenhouse World Karen Elaine Bossenbroek A thesis submitted to the faculty of the University of North Carolina at Chapel Hill in partial fulfillment of the requirements for the degree of Master of Science in the Department of Geological Sciences. Chapel Hill 2011 Approved By: Dr. Louis R. Bartek III Dr. Kevin G. Stewart Dr. Brian W. Horn ©2011 Karen Elaine Bossenbroek ALL RIGHTS RESERVED ii ABSTRACT Karen Elaine Bossenbroek: Sequence Stratigraphy of the Marginal Marine Facies of the Jurassic Sundance Formation, South Dakota and Wyoming: Implications for Controls of Higher-order Cyclicity in a Greenhouse World (under the direction of Dr. Louis R. Bartek III) The Sundance Formation was produced by three marine inundations of the Western Interior during the Mesozoic, and the passive margin sediments are exposed in the Black Hills region of Wyoming and South Dakota. This study applies sequence-stratigraphic principles in correlation of geophysical well-log data and measured outcrops to establish a chronostratigraphic framework, in order to identify possible processes that govern stratigraphic architecture. The Sundance is part of a higher-order trend of marine inundations on the Western Interior governed by 3rd order cyclicity. The stratigraphy of the Lower Sundance displays a long-term trend of transgression and regression, punctuated by multiple parasequences. High-frequency variation in stratal architecture observed was likely shaped by cyclic variation in sediment supply governed by climate change. This study supports the current view that eustacy during greenhouse intervals is governed by low-frequency slow variations, and higher-frequency short-order cyclicity in sedimentation may also be superimposed during these long-term intervals. -
Quaternary and Late Tertiary of Montana: Climate, Glaciation, Stratigraphy, and Vertebrate Fossils
QUATERNARY AND LATE TERTIARY OF MONTANA: CLIMATE, GLACIATION, STRATIGRAPHY, AND VERTEBRATE FOSSILS Larry N. Smith,1 Christopher L. Hill,2 and Jon Reiten3 1Department of Geological Engineering, Montana Tech, Butte, Montana 2Department of Geosciences and Department of Anthropology, Boise State University, Idaho 3Montana Bureau of Mines and Geology, Billings, Montana 1. INTRODUCTION by incision on timescales of <10 ka to ~2 Ma. Much of the response can be associated with Quaternary cli- The landscape of Montana displays the Quaternary mate changes, whereas tectonic tilting and uplift may record of multiple glaciations in the mountainous areas, be locally signifi cant. incursion of two continental ice sheets from the north and northeast, and stream incision in both the glaciated The landscape of Montana is a result of mountain and unglaciated terrain. Both mountain and continental and continental glaciation, fl uvial incision and sta- glaciers covered about one-third of the State during the bility, and hillslope retreat. The Quaternary geologic last glaciation, between about 21 ka* and 14 ka. Ages of history, deposits, and landforms of Montana were glacial advances into the State during the last glaciation dominated by glaciation in the mountains of western are sparse, but suggest that the continental glacier in and central Montana and across the northern part of the eastern part of the State may have advanced earlier the central and eastern Plains (fi gs. 1, 2). Fundamental and retreated later than in western Montana.* The pre- to the landscape were the valley glaciers and ice caps last glacial Quaternary stratigraphy of the intermontane in the western mountains and Yellowstone, and the valleys is less well known. -
Laramide Basement Deformation in the Northern Gallatin Range And
Laramide basement deformation in the northern Gallatin Range and southern Bridger Range, southwest Montana by Erick WB Miller A thesis submitted in partial fulfillment of the requirements for the degree of Master of Science in Earth Sciences Montana State University © Copyright by Erick WB Miller (1987) Abstract: The mechanical response of Archean "basement" rocks in the cores of Laramide uplifts has received experimental attention, but there have been relatively few field studies documenting Laramide basement behavior. The purpose of this study is to field test existing theoretical basement strain models by documenting the geometry and kinematics of deformation in areas of good exposures. Field studies along well exposed Squaw Creek fault and Canyon Mountain anticline, Gallatin Range, and three anticlines of the southern Bridget Range, southwest Montana, were made by comparing foliations, mesoscopic faults, and slickensides found in basement rocks to Laramide features found in the overlying Cambrian strata. The results show that in regions where the angle of discordance between the base of the Cambrian and Archean metamorphic foliation surfaces was low (Bridget Range anticlines and Canyon Mountain anticline), the basement deformed by oblique flexural-slip on preexisting foliation surfaces. Passive-slip was important in regions where Archean folds blocked foliation parallel slip. Large (12 meter thick) internally undeformed blocks indicate break up of the folded layer into macrogranular segments was preferred over coherent deformation. Deformation in bounding shear zones occurred under sub-greenschist conditions. Decreased grain size and increased fluid influx accompanied a transition from mechanical fracturing and frictional sliding to pressure solution slip. These observations indicate a fold strain model and are compatible with the fold-thrust model (Berg, 1962). -
Paleontological Resources Technical Report Riley Ridge to Natrona Project DECEMBER 2018
U.S. Department of the Interior Bureau of Land Management Paleontological Resources Technical Report Riley Ridge to Natrona Project DECEMBER 2018 Table of Contents 1.0 Introduction ......................................................................................................................................... 1 2.0 Regional Setting .................................................................................................................................. 1 3.0 Inventory Methodology ....................................................................................................................... 1 4.0 Potential Fossil-Bearing Geologic Formations ................................................................................... 4 4.1 Browns Park Formation (PFYC 3) ............................................................................................ 4 4.2 White River Formation or Group (PFYC 5) .............................................................................. 5 4.3 Wind River Formation (PFYC 5) .............................................................................................. 5 4.4 Green River Formation (PFYC 5) ............................................................................................. 5 4.5 Wasatch Formation (PFYC 5) ................................................................................................... 5 4.6 Battle Spring Formation (PFYC 3)............................................................................................ 6 4.7 Bridger Formation