DOCSLIB.ORG

Upper Pennsylvanian Stratigraphy and Facies Analysis in the Wolf Camp Hills, West Texas

Total Page：16

File Type：pdf, Size：1020Kb

Download full-text PDF Read full-text
Upper Pennsylvanian Stratigraphy and Facies Analysis in the Wolf Camp Hills, West Texas UPPER PENNSYLVANIAN STRATIGRAPHY AND FACIES ANALYSIS IN THE WOLF CAMP HILLS, WEST TEXAS A Thesis by JAKE KARL SLEIGHT Submitted to the Office of Graduate and Professional Studies of Texas A&M University in partial fulfillment of the requirements for the degree of MASTER OF SCIENCE Chair of Committee, Juan Carlos Laya Co-Chair of Committee, Art Donovan Committee Members, Michael Pope Sara Abedi Head of Department, Julie Newman May 2021 Major Subject: Geology Copyright 2021 Jake Sleight ABSTRACT The Latest Pennsylvanian to Early Permian strata of the Cisco and Wolfcamp Groups, were deposited across the Greater Permian Basin and outcrop at the base of the Glass Mountains, as a series of low-lying hills in Pecos and Brewster Counties. Known as the Wolf Camp Hills, these outcrops, which are the type locality of the Wolfcamp Group, also provide a window to examine strata of the underlying Pennsylvanian Gaptank Supergroup, which is equivalent to the Canyon and Cisco Groups in the subsurface. Most importantly, however, these outcrops, which have not been studied in detail in over 50 years, provide seismic-scale exposures to study the stratal geometries within the Cisco and Wolfcamp Groups, as well as the opportunity to define the Cisco/Wolfcamp boundary based on stratal terminations and modern sequence stratigraphic methodologies. By leveraging modern drone photography, in conjunction with traditional field methods, the Cisco/Wolfcamp boundary was recognized as a tectonically-enhanced angular unconformity marked by truncation of Cisco (Gaptank) strata below and onlap of Wolfcamp strata above. Within the underlying Cisco (Gaptank) succession, a series of high-frequency sequences were also defined. Within these high-frequency sequences, the interpreted lowstands are marked by the onset siliciclastics and sediment gravity flows, while the carbonate-prone transgressive and highstands, are dominated shallowing-upward into high-energy carbonate shoals containing phylloid algal mounds. The lensoidal asymmetry of these phylloid algal mounds suggests limited accommodation space during deposition and within them, four growth phases are recognized. ii DEDICATION I should thank my wife, Corey Sleight, for making sure my belly was always full, and for putting up with my nonsense and my busy weekends. She is the real hero in this tale. Also, big shout out to my pups, Koda and Lainy, for dragging me out of the house and taking me for walks. The vet said I needed the exercise. iii ACKNOWLEDGEMENTS This research was funded by the Unconventional Reservoir and Outcrop Characterization (UROC) Consortium in the College of Geosciences at Texas A&M University. We would like to thank our industry partners, Exxon Mobil, Chevron, Shell, ConocoPhillips, Oasis, and University Lands, for funding graduate and undergraduate researchers involved in this study. Additionally, we would like to recognize EasyCopy, for their student licensing and making EasyCore available for outcrop descriptions. We would like to especially thank Johnny Rebler and Conner Sullivan, for without them, field and lab work would still be in progress. Additionally, we would like to recognize Maria Gutierrez and Ben Richards whose research is intimately linked to this study and have been essential contributors. iv CONTRIBUTORS AND FUNDING SOURCES Contributors This work was supervised by a thesis committee consisting of Professors Juan Carlos Laya, Art Donovan, and Michael Pope of the Department of Geology and Geophysics and Sara Abedi of the Department of Petroleum Engineering. All other work for this thesis was completed by the student independently Funding Sources Graduate study was supported by the Unconventional Reservoir and Outcrop Characterization (UROC) Consortium within the Berg-Hughes Center of the College of Geosciences at Texas A&M University. v TABLE OF CONTENTS Page ABSTRACT .................................................................................................................................... ii DEDICATION ............................................................................................................................... iii ACKNOWLEDGEMENTS ........................................................................................................... iv CONTRIBUTORS AND FUNDING SOURCES .......................................................................... v TABLE OF CONTENTS ............................................................................................................... vi LIST OF FIGURES ..................................................................................................................... viii LIST OF TABLES ....................................................................................................................... xiii 1 INTRODUCTION .................................................................................................................. 1 2 GEOLOGICAL BACKGROUND .......................................................................................... 9 2.1 Previous Work .................................................................................................................. 9 2.2 The Base of the Wolfcamp and Its Ever-Changing Position and Age ............................. 9 2.3 Canyon and Cisco Groups (“Gaptank Supergroup”) ..................................................... 13 2.4 Tectonics ........................................................................................................................ 16 3 METHODS ........................................................................................................................... 21 3.1 Measured Sections.......................................................................................................... 21 3.2 Hand-Held Gamma Ray ................................................................................................. 21 3.3 Sampling and Petrography ............................................................................................. 21 3.4 X-Ray Diffraction .......................................................................................................... 22 3.5 Aerial Photography Mapping ......................................................................................... 22 4 RESULTS ............................................................................................................................. 24 4.1 X-Ray Diffraction .......................................................................................................... 24 4.2 Spectral Gamma Ray ...................................................................................................... 26 4.3 Facies .............................................................................................................................. 26 4.3.1 Microbial Nodular Mudstone/Wackestone ............................................................. 28 vi 4.3.2 Brecciated Carbonate Mudstone/Wackestone ........................................................ 28 4.3.3 Fusulinid Crinoidal Wackestone/Packstone ........................................................... 30 4.3.4 Phylloid Algal Skeletal Wackestone/Packstone ..................................................... 30 4.3.5 Phylloid Algal Skeletal Boundstone ....................................................................... 30 4.3.6 Crinoidal Packstone/Grainstone (Encrinite) ........................................................... 30 4.3.7 Fusulinid Skeletal Grainstone ................................................................................. 31 4.3.8 Oolitic/Peloidal Grainstone ..................................................................................... 31 4.3.9 Crystalline Dolomite ............................................................................................... 31 4.3.10 Polymict Carbonate Conglomerate ......................................................................... 33 4.3.11 Polymict Carbonate Breccia ................................................................................... 33 4.3.12 Sandstone ................................................................................................................ 33 4.3.13 Siliciclastic Mudstone/Shale ................................................................................... 33 4.4 Thickness, Lateral Variation, Geobody Shape, and Depositional Architecture ............. 38 5 DISCUSSION ....................................................................................................................... 40 5.1 Facies Analysis and Sequence Stratigraphy ................................................................... 40 5.1.1 Depositional Profile ................................................................................................ 40 5.1.2 Sequence Development and Depositional Architecture ......................................... 42 5.1.3 Depositional Sequence H ........................................................................................ 44 5.1.4 Depositional Sequence I ......................................................................................... 45 5.1.5 Depositional Sequence J ......................................................................................... 50 5.1.6 Wolfcamp 01 Depositional Sequence ..................................................................... 54 5.2 Phases of Phylloid Algal Mound Construction .............................................................. 59 5.3 Sequence Scale, Duration, and
Load more

Recommended publications
  • Submarine Carbonate Breccia Beds-A
    University of Calgary PRISM: University of Calgary's Digital Repository Science Science Research & Publications 1979-01 Submarine carbonate breccia beds-a depositional model for two-layer, sediment gravity flows from the Sekwi Formation (Lower Cambrian), Mackenzie Mountains, Northwest Territories, Canada Krause, Federico F.; Oldershaw, A. E. National Research Council Canada Krause, F. F. and Oldershaw, A. E.. (1979). "Submarine carbonate breccia beds-a depositional model for two-layer, sediment gravity flows from the Sekwi Formation (Lower Cambrian), Mackenzie Mountains, Northwest Territories, Canada". Canadian Journal of Earth Sciences, 16: 189-199. http://hdl.handle.net/1880/44462 journal article Downloaded from PRISM: https://prism.ucalgary.ca 189 ine carbonate breccia beds-a depositional model for two-layer, sediment gravity ow from the Sekwi Formation (Lower Cambrian), Mackenzie Mountains, Northwest Territories, Canada F. F. KRAUSEAND A. E. OLDERSHAW I)~,portrm,rltc!f'GcoIo~y. Urli~.rrsityc!f'Crrl,<*rrr:\.. Ct11gtrr.v. Altcc.. Crrr~rrtltrT2N IN4 Received September 5. 1978 Revision accepted Septemher 22. 1978 in the Sekwi Formation. cxbonate breccia beds interhedded with slope sediments are inter- p~c~cd;I\ \uhnl:~rine sediment gravity flow\ that formed a two-layer deposit during n single II.,II\~VIevent. They are intermediate between true slump and turbidites and may initiate by \I~~nip~ng;~nvwhereon the continental slope and rise. Textural characteristics of the deposits are ;I limc~ionofttowndope transport distance. Ihm 1;1 formation de Sekwi, on interprete les cowhe\ de carbonates hl-echique\ interstratifies .,\N dc\ \idinlent\ de talus comme des coulees par gravite de sediments sousmarins qui ont Irh~r~lC(In &pOt hicouche durant un seul Cpiwcle de tran\pol-t.
    [Show full text]
  • Carbonate-Hosted Zn-Pb Mineralization in the Lower
    Carbonate-hosted Zn-Pb mineralization in the Lower Cambrian Sekwi Formation, Mackenzie Mountains, NWT: Stratigraphic, structural, and lithologic controls, and constraints on ore fluid characteristics by Beth J. Fischer Thesis submitted in partial fulfillment of the requirements for the degree of Master of Science (M.Sc.) in Geology School of Graduate Studies Laurentian University Sudbury, Ontario © Beth Fischer, 2012 Library and Archives Bibliotheque et Canada Archives Canada Published Heritage Direction du 1+1 Branch Patrimoine de I'edition 395 Wellington Street 395, rue Wellington Ottawa ON K1A0N4 Ottawa ON K1A 0N4 Canada Canada Your file Votre reference ISBN: 978-0-494-87713-5 Our file Notre reference ISBN: 978-0-494-87713-5 NOTICE: AVIS: The author has granted a non­ L'auteur a accorde une licence non exclusive exclusive license allowing Library and permettant a la Bibliotheque et Archives Archives Canada to reproduce, Canada de reproduire, publier, archiver, publish, archive, preserve, conserve, sauvegarder, conserver, transmettre au public communicate to the public by par telecommunication ou par I'lnternet, preter, telecommunication or on the Internet, distribuer et vendre des theses partout dans le loan, distrbute and sell theses monde, a des fins commerciales ou autres, sur worldwide, for commercial or non­ support microforme, papier, electronique et/ou commercial purposes, in microform, autres formats. paper, electronic and/or any other formats. The author retains copyright L'auteur conserve la propriete du droit d'auteur ownership and moral rights in this et des droits moraux qui protege cette these. Ni thesis. Neither the thesis nor la these ni des extraits substantiels de celle-ci substantial extracts from it may be ne doivent etre imprimes ou autrement printed or otherwise reproduced reproduits sans son autorisation.
    [Show full text]
  • Technical Report Mackenzie Mountains
    TECHNICAL REPORT MACKENZIE MOUNTAINS IRON-COPPER PROPERTY, NORTHWEST TERRITORIES, CANADA NTS: 106F/01, 02 Mackenzie Mining District, Northwest Territories, Canada 65° 12’ N and 132° 27’ E PREPARED FOR: Metallis Resources Inc. And Seahawk Ventures Inc. PREPARED BY: Aurora Geosciences Ltd. TECHNICAL REPORT MACKENZIE MOUNTAINS IRON-COPPER PROPERTY Northwest Territories, Canada Effective Date: June 01, 2016 Prepared for METALLIS RESOURCES INC. 515 – 850 West Hastings Street Vancouver, British Columbia Canada, V6C 1E1 Phone 604.688.5077 Fax 604.688.5017 And SEAHAWK VENTURES INC. 909 Bowron Street Coquitlam, B.C. Canada, V3J 7W3 (p) 604.936.2701 (f) 604.936.2701 Prepared by: AURORA GEOSCIENCES LTD. Main Office: 3506 McDonald Drive, Yellowknife, NT, X1A 2H1 Phone: (867) 902.2729 Fax: (867) 920-2739 www.aurorageosciences.com Author: Gary Vivian, M.Sc., P. Geol. QP Metallis Resources Inc. & Seahawk Ventures Inc. Aurora Geosciences Ltd. Table of Contents 1 SUMMARY ..................................................................................................................................................... 1 2 INTRODUCTION ............................................................................................................................................. 3 3 RELIANCE ON OTHER EXPERTS ....................................................................................................................... 4 4 PROPERTY LOCATION AND DESCRIPTION .....................................................................................................
    [Show full text]
  • Lithostratigraphy of Deep-Water Lower Paleozoic Strata in the Central Misty Creek Embayment, Mackenzie Mountains, Northwest Territories
    Lithostratigraphy of deep-water lower Paleozoic strata in the central Misty Creek embayment, Mackenzie Mountains, Northwest Territories T.S. Chevrier and E.C. Turner Geological Survey of Canada Current Research 2013-14 2013 Geological Survey of Canada Current Research 2013-14 Lithostratigraphy of deep-water lower Paleozoic strata in the central Misty Creek embayment, Mackenzie Mountains, Northwest Territories T.S. Chevrier and E.C. Turner 2013 ©Her Majesty the Queen in Right of Canada 2013 ISSN 1701-4387 Catalogue No. M44-2013/14E-PDF ISBN 978-1-100-22258-5 doi:10.4095/292568 A copy of this publication is also available for reference in depository libraries across Canada through access to the Depository Services Program’s Web site at http://dsp-psd.pwgsc.gc.ca This publication is available for free download through GEOSCAN http://geoscan.ess.nrcan.gc.ca Recommended citation Chevrier, T.S. and Turner, E.C., 2013. Lithostratigraphy of deep-water lower Paleozoic strata in the central Misty Creek embayment, Mackenzie Mountains, Northwest Territories; Geological Survey of Canada, Current Research 2013-14, 21 p. doi:10.4095/292568 Critical review K. Dewing Authors T.S. Chevrier ([email protected]) E.C. Turner ([email protected]) Department of Earth Sciences Laurentian University Sudbury, Ontario P3E 2C6 Correction date: All requests for permission to reproduce this work, in whole or in part, for purposes of commercial use, resale, or redistribution shall be addressed to: Earth Sciences Sector Copyright Information Officer, Room 622C, 615 Booth Street, Ottawa, Ontario K1A 0E9. E-mail: [email protected] Lithostratigraphy of deep-water lower Paleozoic strata in the central Misty Creek embayment, Mackenzie Mountains, Northwest Territories Chevrier, T.S.
    [Show full text]
  • Altered Fluvial Patterns in North China Indicate Rapid Climate Change
    www.nature.com/scientificreports OPEN Altered fuvial patterns in North China indicate rapid climate change linked to the Permian-Triassic mass extinction Zhicai Zhu1, Yongqing Liu1*, Hongwei Kuang 1*, Michael J. Benton 2, Andrew J. Newell3, Huan Xu4, Wei An5, Shu’an Ji1, Shichao Xu6, Nan Peng1 & Qingguo Zhai1 The causes of the severest crisis in the history of life around the Permian-Triassic boundary (PTB) remain controversial. Here we report that the latest Permian alluvial plains in Shanxi, North China, went through a rapid transition from meandering rivers to braided rivers and aeolian systems. Soil carbonate carbon isotope (δ13C), oxygen isotope (δ18O), and geochemical signatures of weathering intensity reveal a consistent pattern of deteriorating environments (cool, arid, and anoxic conditions) and climate fuctuations across the PTB. The synchronous ecological collapse is confrmed by a dramatic reduction or disappearance of dominant plants, tetrapods and invertebrates and a bloom of microbially- induced sedimentary structures. A similar rapid switch in fuvial style is seen worldwide (e.g. Karoo Basin, Russia, Australia) in terrestrial boundary sequences, all of which may be considered against a background of global marine regression. The synchronous global expansion of alluvial fans and high- energy braided streams is a response to abrupt climate change associated with aridity, hypoxia, acid rain, and mass wasting. Where neighbouring uplands were not uplifting or basins subsiding, alluvial fans are absent, but in these areas the climate change is evidenced by the disruption of pedogenesis. Te severest ecological crisis in Earth history, the Permian-Triassic mass extinction (PTME), occurred 252 Ma and killed over 90% of marine species and about 70% of continental vertebrate families1,2.
    [Show full text]
  • 1 Rrh: Middle Cambrian Coprolites Lrh: J. Kimmig And
    RRH: MIDDLE CAMBRIAN COPROLITES LRH: J. KIMMIG AND B.R. PRATT Research Article DOI: http://dx.doi.org/10.2110/palo.2017.038 COPROLITES IN THE RAVENS THROAT RIVER LAGERSTÄTTE OF NORTHWESTERN CANADA: IMPLICATIONS FOR THE MIDDLE CAMBRIAN FOOD WEB 1 2 JULIEN KIMMIG AND BRIAN R. PRATT 1Biodiversity Institute, University of Kansas, Lawrence, Kansas 66045, USA 2Department of Geological Sciences, University of Saskatchewan, Saskatoon, Saskatchewan S7N 5E2, Canada e-mail: [email protected] ABSTRACT: The Rockslide Formation (middle Cambrian, Drumian, Bolaspidella Zone) of the Mackenzie Mountains, northwestern Canada, hosts the Ravens Throat River Lagerstätte, which consists of two, 1-m thick intervals of greenish, thinly laminated, locally burrowed, slightly calcareous mudstone yielding a low-diversity and low-abundance fauna of bivalved arthropods, ‘worms’, hyoliths, and trilobites. Also present are flattened, circular, black carbonaceous objects averaging 15 mm in diameter, interpreted as coprolites preserved in either dorsal or ventral view. Many consist of aggregates of ovate carbonaceous flakes 0.5–2 mm long, which are probably compacted fecal pellets. Two-thirds contain a variably disarticulated pair of arthropod valves, and many also contain coiled to fragmented, corrugated ‘worm’ cuticle, either alone or together with valves. A few contain an enrolled agnostoid. In rare cases a ptychoparioid cranidium, agnostoid shield, bradoriid valve, or hyolith conch or operculum is present; these are taken to be due to capture and ingestion of bioclasts from the adjacent seafloor. Many of the coprolites are associated with semi-circular spreiten produced by movement of the worm-like predator while it occupied a vertical burrow. Its identity is unknown but it clearly exhibited prey selectivity.
    [Show full text]
  • Early Cambrian Tidal Sedimentary Environments, Western Victoria Island, Arctic Canada
    Early Cambrian tidal sedimentary environments, western Victoria Island, Arctic Canada By Andrew Michael Durbano A Thesis Submitted to the College of Graduate Studies and Research in Partial Fulfillment of the Requirements for the Degree of Master of Science in the Department of Geological Sciences University of Saskatchewan Saskatoon © Andrew Michael Durbano, April 2014. All rights reserved. PERMISSION TO USE In presenting this thesis in partial fulfillment of the requirements for a Postgraduate degree from the University of Saskatchewan, I agree that the Libraries of this University may make it freely available for inspection. I further agree that permission for copying of this thesis in any manner, in whole or in part, for scholarly purposes may be granted by the professor or professors who supervised my thesis work or, in their absence, by the Head of the Department or the Dean of the College in which my thesis work was done. It is understood that any copying or publication or use of this thesis or parts thereof for financial gain shall not be allowed without my written permission. It is also understood that due recognition shall be given to me and to the University of Saskatchewan in any scholarly use which may be made of any material in my thesis. Requests for permission to copy or to make other use of material in this thesis in whole or part should be addressed to: Head of the Department of Geological Sciences University of Saskatchewan Saskatoon, Saskatchewan Canada S7N 5E2 OR Dean College of Graduate Studies and Research University of Saskatchewan 107 Administration Place Saskatoon, Saskatchewan Canada S7N 5A2 i ABSTRACT The currently unnamed early Cambrian (Series 2, Stage 4) sandstone unit is exposed in the Minto Inlier of western Victoria Island, Canadian Arctic Islands, and forms the base of the Phanerozoic succession.
    [Show full text]
  • New Species of Olenellina Trilobites from the Early
    THE NATURE OF EVOLUTIONARY RADIATIONS WITH A SPECIAL FOCUS ON DEVONIAN CALMONIID TRILOBITES by Francine R. Abe B.Sc., Bates College, 2003 Submitted to the Department of Ecology and Evolutionary Biology and the Faculty of the Graduate School of the University of Kansas in partial fulfillment of the requirements for the degree of Doctor of Philosophy Bruce S. Lieberman, Co-Chair Edward O. Wiley, Co-Chair Paul Selden Maria Orive Linda Trueb th Date Defended: June 10 , 2010 The Dissertation Committee for Francine R. Abe certifies that this is the approved version of the following dissertation: THE NATURE OF EVOLUTIONARY RADIATIONS WITH A SPECIAL FOCUS ON DEVONIAN CALMONIID TRILOBITES Committee: Bruce S. Lieberman, Co-Chair Edward O. Wiley, Co-Chair Paul Selden Maria Orive Linda Trueb Date Defended: June 10th, 2010 ii ABSTRACT Trilobites were a diverse group of arthropods that left an extensive fossil record which are today used today to study macroevolutionary patterns and processes. A new species and form of olenelloidea trilobites (Nevadella keelensis n. sp. and Esmeraldina rowei) are described from the lower Cambrian Sekwi Formation, Canada. One particular clade of trilobites, the Devonian calmoniid trilobites of the Malvinokaffric Realm, was hailed as a classic paleontological example of an adaptive radiation. Three aspects of the radiation were examined in detail: diversification rates, biogeography, and morphological change. The rates of speciation calculated from stratigraphy were highest when sea level was lowest suggesting causal effect of abiotic factors in speciation. A phylogenetic biogeographic analysis indicated a geographically complex area, and this geographic complexity created various opportunities for speciation via allopatry through sea level changes.
    [Show full text]
  • Phylogenetic Analyses of Trilobites from the Cambrian and Ordovician Radiations
    Phylogenetic analyses of trilobites from the Cambrian and Ordovician radiations by Copyright 2014 Ian Wesley Gapp Submitted to the graduate degree program in Geology and the Graduate Faculty of the University of Kansas in partial fulfillment of the requirements for the degree of Doctor of Philosophy. ________________________________ Chairperson: Bruce S. Lieberman ________________________________ Alison Olcott Marshall ________________________________ Jennifer A. Roberts ________________________________ Paul A. Selden ________________________________ Edward O. Wiley Date Defended: January 27, 2014 The Dissertation Committee for Ian Wesley Gapp certifies that this is the approved version of the following dissertation: Phylogenetic analyses of trilobites from the Cambrian and Ordovician radiations ________________________________ Chairperson: Bruce S. Lieberman Date approved: January 27, 2014 ii Abstract Trilobites are an ideal group used for phylogenetic studies due to their complex morphology and abundance in the Paleozoic fossil record. Because of this, trilobite phylogenetics has become an important component of understanding macroevolutionary patterns during key evolutionary radiations. Two radiations that this dissertation investigates are the Cambrian and Ordovician radiations. While both occur during the early Paleozoic, they present very different patterns. The Cambrian radiation was the sudden appearance of all major metazoan phyla, whereas in the Ordovician, those new beauplans were already in place and there was instead a great increase in diversity among those groups. Presented here are phylogenetic analyses of trilobites from those radiations to further our understanding of the evolutionary patterns occurring at those times. iii Acknowledgements It has been an incredible six and a half years at The University of Kansas, here in Lawrence. I have met many fantastic people during my time here and want to be sure that several people get the recognition that they deserve.
    [Show full text]
  • Integrated Ediacaran Chronostratigraphy, Wernecke Mountains, Northwestern Canada Leanne J
    Precambrian Research 132 (2004) 1–27 Integrated Ediacaran chronostratigraphy, Wernecke Mountains, northwestern Canada Leanne J. Pyle a,∗, Guy M. Narbonne a, Noel P. James a, Robert W. Dalrymple a, Alan J. Kaufman b a Department of Geological Sciences and Geological Engineering, Miller Hall, Queen’s University, Kingston, Ont., Canada K7L 3N6 b Department of Geology, University of Maryland, College Park, MD 20742, USA Received 9 July 2003; accepted 13 January 2004 Abstract Terminal Neoproterozoic (Ediacaran, ca. 600–543 Ma) strata of the upper part of the Windermere Supergroup are well-exposed in the Mackenzie Mountains and the Wernecke Mountains of northwestern Canada. Windermere strata in the Mackenzie Moun- tains contain an exceptional Ediacaran biostratigraphic and isotopic (C and Sr) record, while the sequence stratigraphic record is subtle throughout this predominantly deep-water succession. Coeval strata in the Wernecke Mountains can be correlated with the succession in the Mackenzie Mountains on a formational level. In contrast to the deep-water setting of the Mackenzies succes- sion, the Werneckes succession preserves a predominantly shallow-water succession amenable to detailed sequence stratigraphy. Integrated lithostratigraphy, chemostratigraphy, biostratigraphy and sedimentology partitions the Wernecke Mountains succes- sion into five depositional sequences and constrains correlation with strata in the Mackenzie Mountains. The siliciclastic and carbonate sediments, deposited along the margin of the proto-Pacific Ocean, record accumulation in continental slope, neritic, and terrestrial paleoenvironments. Distinctive temporal chemostratigraphic and biostratigraphic attributes allow these strata to be correlated with other Ediacaran successions worldwide. Integrating sequence stratigraphy with these attributes is a robust, yet under-utilized correlation tool and is a step toward erecting a more detailed working Neoproterozoic chronostratigraphy.
    [Show full text]
  • Brigham Young University Geology Studies
    GEOLOGY YOUNG STUDIES UNIVERSITY CONTENTS Paleontology and Depositional Environments: Cambrian of Western North America A symposium U. J. Brady University of Kansas D. P. Campbell University of Kansas H. E. Cook U. S. Geological Survey W. H. Fritz Canadian Geological Survey J. C. Kepper University of Nevada, Las Vegas R. B. Koepnidc Williams College V. E. Kurt2 Southwest Missouri State University K. C. Lohmann State University of New Yo&, Stony Brook D. J. McSride University of Kansas J. N. Moore University of California, Los AngeIes A. R. Pher State University of New York, Stony Brook J. K. aigby Brigham Young University R. A. Robison University of Kansas A. J. Bowell University of Kansas James Sprinkle University of Texas, Austin M. E. Taylor u. s. Geological SULV~~ Extended presentations of some papers presented at a Paleontological Society symposium held in Salt Lake City, Utah, on October 20, 1975. Brigham Young University Geology Studies Volume 23, Part 2-July 1976 Contents Trilobites in Utah folklore ................ M. E. Taylor and R. A. Robison Lower Cambrian Stratigraphy, Mackenzie Mountains, Northwestern Canada .................................................... W. H. Fritz Depositional Environments of the Lower Cambrian Poleta Formation and Its Stratigraphic Equivalents, California and Nevada ............................ J. N. Moore Biostratigraphic Implications of Trilobite Biofacies: Albertella Zone, Middle Cambrian, Western United States ............................ A. R. Palmer and D. P. Campbell Some Observations on Occurrences of Cambrian Porifera in Western North America and Their Evolution .......................................................... J. K. Rigby Biostratigraphy and Paleoecology of Cambrian Echinoderms from the Rocky Mountains ................ James Sprinkle Stratigraphic Relationships and Depositional Facies in a Portion of the Middle Cambrian of the Basin and Range Province ...............................
    [Show full text]
  • Isolated Carbonate Bodies Composed of Stacked Debris-Flow Deposits on a Fine-Grained Carbonate Lower Slope of Devonian Age, Antelope Peak, Elko County, Nevada
    Isolated Carbonate Bodies Composed of Stacked Debris-Flow Deposits on a Fine-Grained Carbonate Lower Slope of Devonian Age, Antelope Peak, Elko County, Nevada U.S. GEOLOGICAL SURVEY BULLETIN 1988-E ".- -.' '.: - . .- ". ' : - ' ' ' ' .- -: '.' '-'' --'''''"''~'"""'"''' ''" AVAILABILITY OF BOOKS AND MAPS OF THE U.S. GEOLOGICAL SURVEY Instructions on ordering publications of the U.S. Geological Survey, along with prices of the last offerings, are given in the current-year issues of the monthly catalog "New Publications of the U.S. Geological Survey." Prices of available U.S. Geological Survey publications re­ leased prior to the current year are listed in the most recent annual "Price and Availability List." Publications that may be listed in various U.S. Geological Survey catalogs (see back inside cover) but not listed in the most recent annual "Price and Availability List" may no longer be available. Reports released through the NTIS may be obtained by writing to the National Technical Information Service, U.S. Department of Commerce, Springfield, VA 22161; please include NTIS report number with inquiry. Order U.S. Geological Survey publications by mail or over the counter from the offices listed below. BY MAIL OVER THE COUNTER Books Books and Maps Professional Papers, Bulletins, Water-Supply Papers, Tech­ Books and maps of the U.S. Geological Survey are available niques of Water-Resources Investigations, Circulars, publications over the counter at the following U.S. Geological Survey offices, all of general interest (such as leaflets, pamphlets, booklets), single of which are authorized agents of the Superintendent of Docu­ copies of Earthquakes & Volcanoes, Preliminary Determination of ments. Epicenters, and some miscellaneous reports, including some of the foregoing series that have gone out of print at the Superintendent of Documents, are obtainable by mail from ANCHORAGE, Alaska-Rm.
    [Show full text]