Composite Biostratigraphic Outcrop Sections for Cretaceous Formations
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Stratigraphy and Paleontology of Mid-Cretaceous Rocks in Minnesota and Contiguous Areas
Stratigraphy and Paleontology of Mid-Cretaceous Rocks in Minnesota and Contiguous Areas GEOLOGICAL SURVEY PROFESSIONAL PAPER 1253 Stratigraphy and Paleontology of Mid-Cretaceous Rocks in Minnesota and Contiguous Areas By WILLIAM A. COBBAN and E. A. MEREWETHER Molluscan Fossil Record from the Northeastern Part of the Upper Cretaceous Seaway, Western Interior By WILLIAM A. COBBAN Lower Upper Cretaceous Strata in Minnesota and Adjacent Areas-Time-Stratigraphic Correlations. and Structural Attitudes By E. A. M EREWETHER GEOLOGICAL SURVEY PROFESSIONAL PAPER 1 2 53 UNITED STATES GOVERNMENT PRINTING OFFICE, WASHINGTON 1983 UNITED STATES DEPARTMENT OF THE INTERIOR JAMES G. WATT, Secretary GEOLOGICAL SURVEY Dallas L. Peck, Director Library of Congress Cataloging in Publication Data Cobban, William Aubrey, 1916 Stratigraphy and paleontology of mid-Cretaceous rocks in Minnesota and contiguous areas. (Geological Survey Professional Paper 1253) Bibliography: 52 p. Supt. of Docs. no.: I 19.16 A. Molluscan fossil record from the northeastern part of the Upper Cretaceous seaway, Western Interior by William A. Cobban. B. Lower Upper Cretaceous strata in Minnesota and adjacent areas-time-stratigraphic correlations and structural attitudes by E. A. Merewether. I. Mollusks, Fossil-Middle West. 2. Geology, Stratigraphic-Cretaceous. 3. Geology-Middle West. 4. Paleontology-Cretaceous. 5. Paleontology-Middle West. I. Merewether, E. A. (Edward Allen), 1930. II. Title. III. Series. QE687.C6 551.7'7'09776 81--607803 AACR2 For sale by the Distribution Branch, U.S. -
High-Resolution Correlation of the Upper Cretaceous Stratigraphy Between the Book Cliffs and the Western Henry Mountains Syncline, Utah, U.S.A
University of Nebraska - Lincoln DigitalCommons@University of Nebraska - Lincoln Dissertations & Theses in Earth and Atmospheric Earth and Atmospheric Sciences, Department of Sciences 5-2012 HIGH-RESOLUTION CORRELATION OF THE UPPER CRETACEOUS STRATIGRAPHY BETWEEN THE BOOK CLIFFS AND THE WESTERN HENRY MOUNTAINS SYNCLINE, UTAH, U.S.A. Drew L. Seymour University of Nebraska, [email protected] Follow this and additional works at: http://digitalcommons.unl.edu/geoscidiss Part of the Geology Commons, Sedimentology Commons, and the Stratigraphy Commons Seymour, Drew L., "HIGH-RESOLUTION CORRELATION OF THE UPPER CRETACEOUS STRATIGRAPHY BETWEEN THE BOOK CLIFFS AND THE WESTERN HENRY MOUNTAINS SYNCLINE, UTAH, U.S.A." (2012). Dissertations & Theses in Earth and Atmospheric Sciences. 88. http://digitalcommons.unl.edu/geoscidiss/88 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 Dissertations & Theses in Earth and Atmospheric Sciences by an authorized administrator of DigitalCommons@University of Nebraska - Lincoln. HIGH-RESOLUTION CORRELATION OF THE UPPER CRETACEOUS STRATIGRAPHY BETWEEN THE BOOK CLIFFS AND THE WESTERN HENRY MOUNTAINS SYNCLINE, UTAH, U.S.A. By Drew L. Seymour A THESIS Presented to the Faculty of The Graduate College at the University of Nebraska In Partial Fulfillment of Requirements For Degree of Master of Science Major: Earth and Atmospheric Sciences Under the Supervision of Professor Christopher R. Fielding Lincoln, NE May, 2012 HIGH-RESOLUTION CORRELATION OF THE UPPER CRETACEOUS STRATIGRAPHY BETWEEN THE BOOK CLIFFS AND THE WESTERN HENRY MOUNTAINS SYNCLINE, UTAH. U.S.A. Drew L. Seymour, M.S. -
Schmitz, M. D. 2000. Appendix 2: Radioisotopic Ages Used In
Appendix 2 Radioisotopic ages used in GTS2020 M.D. SCHMITZ 1285 1286 Appendix 2 GTS GTS Sample Locality Lat-Long Lithostratigraphy Age 6 2s 6 2s Age Type 2020 2012 (Ma) analytical total ID ID Period Epoch Age Quaternary À not compiled Neogene À not compiled Pliocene Miocene Paleogene Oligocene Chattian Pg36 biotite-rich layer; PAC- Pieve d’Accinelli section, 43 35040.41vN, Scaglia Cinerea Fm, 42.3 m above base of 26.57 0.02 0.04 206Pb/238U B2 northeastern Apennines, Italy 12 29034.16vE section Rupelian Pg35 Pg20 biotite-rich layer; MCA- Monte Cagnero section (Chattian 43 38047.81vN, Scaglia Cinerea Fm, 145.8 m above base 31.41 0.03 0.04 206Pb/238U 145.8, equivalent to GSSP), northeastern Apennines, Italy 12 28003.83vE of section MCA/84-3 Pg34 biotite-rich layer; MCA- Monte Cagnero section (Chattian 43 38047.81vN, Scaglia Cinerea Fm, 142.8 m above base 31.72 0.02 0.04 206Pb/238U 142.8 GSSP), northeastern Apennines, Italy 12 28003.83vE of section Eocene Priabonian Pg33 Pg19 biotite-rich layer; MASS- Massignano (Oligocene GSSP), near 43.5328 N, Scaglia Cinerea Fm, 14.7 m above base of 34.50 0.04 0.05 206Pb/238U 14.7, equivalent to Ancona, northeastern Apennines, 13.6011 E section MAS/86-14.7 Italy Pg32 biotite-rich layer; MASS- Massignano (Oligocene GSSP), near 43.5328 N, Scaglia Cinerea Fm, 12.9 m above base of 34.68 0.04 0.06 206Pb/238U 12.9 Ancona, northeastern Apennines, 13.6011 E section Italy Pg31 Pg18 biotite-rich layer; MASS- Massignano (Oligocene GSSP), near 43.5328 N, Scaglia Cinerea Fm, 12.7 m above base of 34.72 0.02 0.04 206Pb/238U -
Memorial to W.A. “Bill” Cobban (1916–2015) NEAL L
Memorial to W.A. “Bill” Cobban (1916–2015) NEAL L. LARSON Larson Paleontology Unlimited, LLC, Keystone, South Dakota 57745, USA; [email protected] NEIL H. LANDMAN American Museum of Natural History, Division of Paleontology (Invertebrates), New York, New York 10024, USA; [email protected] STEPHEN C. HOOK Atarque Geologic Consulting, LLC, Socorro, New Mexico 87810, USA; [email protected] Dr. W.A. “Bill” Cobban, one of the most highly re- spected, honored and published geologist-paleontologists of all time, passed away peacefully in his sleep in the morning of 21 April 2015 at the age of 98 in Lakewood, Colorado. Bill was an extraordinary field collector, geologist, stratigrapher, biostratigrapher, paleontologist, and mapmaker who spent nearly his entire life working for the U.S. Geo- logical Survey (USGS). In a career that spanned almost 75 years, he fundamentally changed our understanding of the Upper Cretaceous Western Interior through its fossils, making it known throughout the world. William Aubrey “Bill” Cobban was born in 1916 near Great Falls, Montana. As a teenager, he discovered a dinosaur in the Kootenai Formation catching the attention of Barnum Brown, premier dinosaur collector at the American Museum of Natural History, where the dinosaur now resides. A few years later, as Bill told, he read about the discovery of fossil bones in Shelby, Montana, during excavation of the Toole County Courthouse. The bones turned out to actually be baculites and other iridescent ammonites. These ammonites made such an impression on Bill they would change his life forever. He attended Montana State University in 1936, where he met a geology professor who encouraged an already developing love for geology and paleontology and received his B.S. -
Phylogeny, Diversity, and Ecology of the Ammonoid Superfamily Acanthoceratoidea Through the Cenomanian and Turonian
PHYLOGENY, DIVERSITY, AND ECOLOGY OF THE AMMONOID SUPERFAMILY ACANTHOCERATOIDEA THROUGH THE CENOMANIAN AND TURONIAN DAVID A.A. MERTZ A Thesis Submitted to the Graduate College of Bowling Green State University in partial fulfillment of the requirements for the degree of MASTER OF SCIENCE August 2017 Committee: Margaret Yacobucci, Advisor Andrew Gregory Keith Mann © 2017 David Mertz All Rights Reserved iii ABSTRACT Margaret Yacobucci Both increased extinction and decreased origination, caused by rising oceanic anoxia and decreased provincialism, respectively, have been proposed as the cause of the Cenomanian Turonian (C/T) extinction event for ammonoids. Conflicting evidence exists for whether diversity actually dropped across the C/T. This study used the ammonoid superfamily Acanthoceratoidea as a proxy for ammonoids as a whole, particularly focusing on genera found in the Western Interior Seaway (WIS) of North America, including Texas. Ultimately, this study set out to determine 1) whether standing diversity decreased across the C/T boundary in the WIS, 2) whether decreased speciation or increased extinction in ammonoids led to a drop in diversity in the C/T extinction event, 3) how ecology of acanthoceratoid genera changed in relation to the C/T extinction event, and 4) whether these ecological changes indicate rising anoxia as the cause of the extinction. In answering these questions, three phylogenetic analyses were run that recovered the families Acanthoceratidae, Collignoniceratidae, and Vascoceratidae. Pseudotissotiidae was not recovered at all, while Coilopoceratidae was recovered but reclassified as a subfamily of Vascoceratidae. Seven genera were reclassified into new families and one genus into a new subfamily. After calibrating the trees with stratigraphy, I was able to determine that standing diversity dropped modestly across the C/T boundary and the Early/Middle Turonian boundary. -
40Ar/39Ar Dating of the Late Cretaceous Jonathan Gaylor
40Ar/39Ar Dating of the Late Cretaceous Jonathan Gaylor To cite this version: Jonathan Gaylor. 40Ar/39Ar Dating of the Late Cretaceous. Earth Sciences. Université Paris Sud - Paris XI, 2013. English. NNT : 2013PA112124. tel-01017165 HAL Id: tel-01017165 https://tel.archives-ouvertes.fr/tel-01017165 Submitted on 2 Jul 2014 HAL is a multi-disciplinary open access L’archive ouverte pluridisciplinaire HAL, est archive for the deposit and dissemination of sci- destinée au dépôt et à la diffusion de documents entific research documents, whether they are pub- scientifiques de niveau recherche, publiés ou non, lished or not. The documents may come from émanant des établissements d’enseignement et de teaching and research institutions in France or recherche français ou étrangers, des laboratoires abroad, or from public or private research centers. publics ou privés. Université Paris Sud 11 UFR des Sciences d’Orsay École Doctorale 534 MIPEGE, Laboratoire IDES Sciences de la Terre 40Ar/39Ar Dating of the Late Cretaceous Thèse de Doctorat Présentée et soutenue publiquement par Jonathan GAYLOR Le 11 juillet 2013 devant le jury compose de: Directeur de thèse: Xavier Quidelleur, Professeur, Université Paris Sud (France) Rapporteurs: Sarah Sherlock, Senoir Researcher, Open University (Grande-Bretagne) Bruno Galbrun, DR CNRS, Université Pierre et Marie Curie (France) Examinateurs: Klaudia Kuiper, Researcher, Vrije Universiteit Amsterdam (Pays-Bas) Maurice Pagel, Professeur, Université Paris Sud (France) - 2 - - 3 - Acknowledgements I would like to begin by thanking my supervisor Xavier Quidelleur without whom I would not have finished, with special thanks on the endless encouragement and patience, all the way through my PhD! Thank you all at GTSnext, especially to the directors Klaudia Kuiper, Jan Wijbrans and Frits Hilgen for creating such a great project. -
Upper Cretaceous Stratigraphy and Biostratigraphy of South-Central New Mexico Stephen C
New Mexico Geological Society Downloaded from: http://nmgs.nmt.edu/publications/guidebooks/63 Upper Cretaceous stratigraphy and biostratigraphy of south-central New Mexico Stephen C. Hook, Greg H. Mack, and William A. Cobban, 2012, pp. 413-430 in: Geology of the Warm Springs Region, Lucas, Spencer G.; McLemore, Virginia T.; Lueth, Virgil W.; Spielmann, Justin A.; Krainer, Karl, New Mexico Geological Society 63rd Annual Fall Field Conference Guidebook, 580 p. This is one of many related papers that were included in the 2012 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. -
Belemnites of the Bohemian Cretaceous Basin in a Global Context
Acta Geologica Polonica, Vol. 54 (2004), No.4, pp. 511-533 Belemnites of the Bohemian Cretaceous Basin in a global context MARTIN KOStAKl, STANISLAV CECH2, BORIS EKRT3, MARTIN MAZUCHl, FRANK WIESE4, SILKE VOIGTs, CHRISTOPHER J. WOOD6 lInstitute of Geology and Palaeontology, Charles University, Albertov 6, Prague 2, 12843, Czech Republic, E-mail: kostak@natw:[email protected] 2Czech Geological Swvey, Kldrov 3, 11821, Czech Republic, E-mail: [email protected] 3National Museum, Vdclavske namest! 68, Prague 1,11579, Czech Republic, E-mail: [email protected] 4Fachlichtung Palaontologie, FU Berlin, Malteserstl: 74-100, D-12249 Berlin, GClmany, E-mail: [email protected] 5 Geological Institute, University of Cologne, Zulpicher StI: 49a, D-50764 Cologne, Gelmany, E-mail: [email protected] 631 Periton Lane, Minehead, Somerset, TA24 SAQ, UK, [email protected] ABSTRACT: KostAK, M., QCH, S., EKRT, E., MAzUCH, M., WIESE, F., VOIGT, S. & WOOD, C.l 2004. Belemnites of the Bohemian Cretaceous Basin in a global context. Acta Geologica Polonica, 54 (4), 511-533. Warszawa. Belemnites occur infrequently from the Upper Cenomanian through the Middle/Upper Coniacian in the Bohemian Cretaceous. Four species of the family Belemnitellidae PAVLOW, 1914 have been described so far. A typical boreal fau nal incursion, represented by belemnites, happened five to six times in the Bohemian Cretaceous Basin (BCB). Praeactinocamax plenus immigrated during the Late Cenomanian Metoicoceras geslinianum ammonite Zone (plenus Event); there were two short-term incursions of P. bohemicus in the Late Turonian (Subplionocyclus neptuni to Plionocyclus gelmali ammonite zones) and an incursion of Goniocamax lundgreni in the late Early Coniacian (below and intra-Cremnoceramus crassus inoceramid Zone). -
The Turonian - Coniacian Boundary in the United States Western Interior
Acta Geologica Polonica, Vol. 48 (1998), No.4, pp. 495-507 The Turonian - Coniacian boundary in the United States Western Interior IRENEUSZ WALASZCZYKI & WILLIAM A. COBBAN2 I Institute of Geology, University of Warsaw, AI. Zwirki i Wigury 93, PL-02-089 Warszawa, Poland E-mail: [email protected] 270 Estes Street, Lakewood, Colorado 80226, USA ABSTRACT: WALASZCZYK, I. & COBBAN, W.A. 1998. The Turonian - Coniacian boundary in the United States Western Interior. Acta Geologica Polonica, 48 (4),495-507. Warszawa. The Turonian/Coniacian boundary succession in the United States Western Interior is characterized by the same inoceramid faunas as recognized in Europe, allowing the application of the same zonal scheme in both regions; Mytiloides scupini and Cremnoceramus waltersdorfensis waltersdorfensis zones in the topmost Turonian and Cremnoceramus deformis erectus Zone in the lowermost Coniacian. The correla tion with Europe is enhanced, moreover, by a set of boundary events recognized originally in Europe and well represented in the Western Interior: Didymotis I Event and waltersdorfensis Event in the topmost Turonian, and erectus I, II and ?III events in the Lower Coniacian. First "Coniacian" ammonite, Forresteria peruana, appears in the indisputable Turonian, in the zone of M. scupini, and the reference to Forresteria in the boundary definition should be rejected. None of the North American sections, pro posed during the Brussels Symposium as the potential boundary stratotypes, i.e. Wagon Mound and Pueblo sections, appears better than the voted section of the Salzgitter-Salder. The Pueblo section is relatively complete but markedly condensed in comparison with the German one, but it may be used as a very convenient reference section for the Turonian/Coniacian boundary in the Western Interior. -
Paleontology and Stratigraphy of Upper Coniacianemiddle
University of Nebraska - Lincoln DigitalCommons@University of Nebraska - Lincoln USGS Staff -- Published Research US Geological Survey 2005 Paleontology and stratigraphy of upper Coniacianemiddle Santonian ammonite zones and application to erosion surfaces and marine transgressive strata in Montana and Alberta W. A. Cobban U.S. Geological Survey T. S. Dyman U.S. Geological Survey, [email protected] K. W. Porter Montana Bureau of Mines and Geology Follow this and additional works at: https://digitalcommons.unl.edu/usgsstaffpub Part of the Earth Sciences Commons Cobban, W. A.; Dyman, T. S.; and Porter, K. W., "Paleontology and stratigraphy of upper Coniacianemiddle Santonian ammonite zones and application to erosion surfaces and marine transgressive strata in Montana and Alberta" (2005). USGS Staff -- Published Research. 367. https://digitalcommons.unl.edu/usgsstaffpub/367 This Article is brought to you for free and open access by the US Geological Survey at DigitalCommons@University of Nebraska - Lincoln. It has been accepted for inclusion in USGS Staff -- Published Research by an authorized administrator of DigitalCommons@University of Nebraska - Lincoln. Cretaceous Research 26 (2005) 429e449 www.elsevier.com/locate/CretRes Paleontology and stratigraphy of upper Coniacianemiddle Santonian ammonite zones and application to erosion surfaces and marine transgressive strata in Montana and Alberta W.A. Cobban a,1, T.S. Dyman b,*, K.W. Porter c a US Geological Survey, Denver, CO 80225, USA b US Geological Survey, Denver, CO 80225, USA c Montana Bureau of Mines and Geology, Butte, MT 59701, USA Received 28 September 2004; accepted in revised form 17 January 2005 Available online 21 June 2005 Abstract Erosional surfaces are present in middle and upper Coniacian rocks in Montana and Alberta, and probably at the base of the middle Santonian in the Western Interior of Canada. -
Scaphitoid Cephalopods of the Colorado Group and Equivalent Rocks, by Localities
Scaphitoid cephalopods LIBRARY of the BURFRU 0? L_ i B R A R Y SPUMNfe. Colorado group ^ IO UBRAttX By W. A. COBBAN . GEOLOGICAL SURVEY PROFESSIONAL PAPER 239 Evolution ^Scaphites and related genera, with descriptions and illustrations of new species and a new genus from W^estern Interior United States . UNITED STATES GOVERNMENT PRINTING OFFICE, WASHINGTON : 1951 UNITED STATES DEPARTMENT OF THE INTERIOR Oscar L. Chapman, Secretary GEOLOGICAL SURVEY W. E. Wrather, Director For sale by the Superintendent of Documents, U. S. Government Printing Office Washington 25, D'.'C. - Price $1.50 (paper cover) CONTENTS Page Page Abstract.. _________________________________________ 1 Scaphite zones____---__ ____________________ 4 Introduction _.______..________..__.___._______-___.__ 1 Northern Black Hills-_-___--_.___________ 4 Characteristics of thescaphites of the Colorado group.. __ 2 Sweetgrass arch._________________________ 5 Scope of the group ..____.-___._________.__._____ 2 Evolution of the scaphites of the Colorado group. 6 Definition of the adult..-.. _.-.__.____.-___.._____ 2 Geographic distribution.______ _________________ 11 3 Systematic descriptions..______________________ 18 Form _ 1 3 References_____________________________..._ 39 Sculpture. 3 Index ______________________________________ 41 Suture _ 4 Variation _ 4 ILLUSTRATIONS Page PLATES 1-21. Scaphites of the Colorado Group-_-_____-^.___-____________-_--_----__-_________..-___-___-___-_ Follow index FiouiiE 1. Lines of scaphite evolution__________________________________________________________________________ 7 2. Sketches illustrating changes in size, form, sculpture, and suture of one lineage of scaphites of Niobrara age_..__ 8 3. Evolution of the trifid first lateral lobe____-_-_____---_-_------------------------------------_-------- 11 4. Index map showing localities of collections from rocks of Colorado age.____-___--____--___-__--__----._-- 12 INSERT Distribution of scaphitoid cephalopods of the Colorado group and equivalent rocks, by localities. -
Macrofauna and Palaeoecology of the Neuburg Kieselerde Member (Cenomanian to Lower Turonian Wellheim Formation, Bavaria, Southern Germany)
Acta Geologica Polonica, Vol. 63 (2013), No. 4, pp. 555–610 DOI: 10.2478/agp-2013-0025 Silicified sea life – Macrofauna and palaeoecology of the Neuburg Kieselerde Member (Cenomanian to Lower Turonian Wellheim Formation, Bavaria, southern Germany) SIMON SCHNEIDER1, MANFRED JÄGER2, ANDREAS KROH3, AGNES MITTERER4, BIRGIT NIEBUHR5, RADEK VODRÁŽKA6, MARKUS WILMSEN5, CHRISTOPHER J. WOOD7 AND KAMIL ZÁGORŠEK8 1CASP, University of Cambridge, West Building, 181A Huntingdon Road, Cambridge, CB3 0DH, UK and GeoZentrum Nordbayern, Paleobiology, Friedrich-Alexander-Universität Erlangen-Nürnberg, Loewenichstr. 28, 91054 Erlangen, Germany. E-mail: [email protected] 2Lindenstr. 53, 72348 Rosenfeld, Germany. E-mail: [email protected] 3Natural History Museum Vienna, Geology-Palaeontology, Burgring 7, 1010 Wien, Austria. E-mail: [email protected] 4Hoffmann Mineral GmbH, Münchener Str. 75, 86633 Neuburg an der Donau, Germany. E-mail: [email protected] 5Senckenberg Naturhistorische Sammlungen Dresden, Museum für Mineralogie und Geologie, Paläozoologie, Königsbrücker Landstr. 159, 01109 Dresden, Germany. E-mails: [email protected]; [email protected] 6Academy of Sciences of the Czech Republic, Institute of Geology, Rozvojová 269, 16502 Praha 6, Czech Republic. E-mail: [email protected] 7Scops Geological Services Ltd., 31 Periton Lane, Minehead, Somerset TA24 8AQ, UK. E-mail: [email protected] 8Department of Paleontology, National Museum, Vaclavske nam. 68, 11579 Praha 1, Czech Republic. E-mail: [email protected] ABSTRACT: Schneider, S., Jäger, M., Kroh, A., Mitterer, A., Niebuhr, B., Vodrážka, R., Wilmsen, M., Wood, C.J. and Zágoršek, K. 2013. Silicified sea life – Macrofauna and palaeoecology of the Neuburg Kieselerde Member (Cenomanian to Lower Tur- onian Wellheim Formation, Bavaria, southern Germany).