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'Cenoceras Islands' in the Blue Lias Formation (Lower Jurassic)
FOSSIL IMPRINT • vol. 75 • 2019 • no. 1 • pp. 108–119 (formerly ACTA MUSEI NATIONALIS PRAGAE, Series B – Historia Naturalis) ‘CENOCERAS ISLANDS’ IN THE BLUE LIAS FORMATION (LOWER JURASSIC) OF WEST SOMERSET, UK: NAUTILID DOMINANCE AND INFLUENCE ON BENTHIC FAUNAS DAVID H. EVANS1, *, ANDY H. KING2 1 Stratigrapher, Natural England, Rivers House, East Quay, Bridgwater, Somerset, TA6 4YS UK; e-mail: [email protected]. 2 Director & Principal Geologist, Geckoella Ltd, Suite 323, 7 Bridge Street, Taunton, Somerset, TA1 1TG UK; e-mail: [email protected]. * corresponding author Evans, D. H., King, A. H. (2019): ‘Cenoceras islands’ in the Blue Lias Formation (Lower Jurassic) of West Somerset, UK: nautilid dominance and influence on benthic faunas. – Fossil Imprint, 75(1): 108–119, Praha. ISSN 2533-4050 (print), ISSN 2533-4069 (on-line). Abstract: Substantial numbers of the nautilid Cenoceras occur in a stratigraphically limited horizon within the upper part of the Lower Jurassic (Sinemurian Stage) Blue Lias Formation at Watchet on the West Somerset Coast (United Kingdom). Individual nautilid conchs are associated with clusters of encrusting organisms (sclerobionts) forming ‘islands’ that may have been raised slightly above the surrounding substrate. Despite the relatively large numbers of nautilid conchs involved, detailed investigation of their preservation suggests that their accumulation reflects a reduction in sedimentation rates rather than an influx of empty conches or moribund animals. Throughout those horizons in which nautilids are present in relative abundance, the remains of ammonites are subordinate or rare. The reason for this unclear, and preferential dissolution of ammonite conchs during their burial does seem to provide a satisfactory solution to the problem. -
Lombardy 2012 Part A
Pan-European Correlation of the Triassic 9th International Field Workshop September 1-5, 2012 The Middle-Late Triassic of Lombardy (I) and Canton Ticino (CH) By Flavio Jadoul and Andrea Tintori 2 This Field Trip had support from: Convenzione dei Comuni italiani del Monte San Giorgio/UNESCO Fondazione UNESCO- Monte San Giorgio Svizzera Comunità Montana della Valsassina, Valvarrone, Val d’Esino e Riviera Parco Regionale della Grigna Settentrionale 3 September 2, first day by Andrea Tintori and Markus Felber MONTE SAN GIORGIO IS UNESCO WORLD HERITAGE SITE Monte San Giorgio is among the most important fossil-bearing sites in the world, in particular concerning the middle Triassic fauna (245-230 million years ago). Following the UNESCO inscription of the Swiss side of the mountain in 2003, the Italian side has been inscribed in 2010, stating that: “Monte San Giorgio is the only and best known evidence of the marine Triassic life but also preserves some important remains of terrestrial organisms. The numerous and diverse fossil finds are exceptionally preserved and complete. The long history of the research and the controlled management of the paleontological resources have allowed thorough studies and the classification of exceptional specimens which are the basis for a rich scientific paper production. For all these reasons Monte San Giorgio represents the main reference in the world concerning the Triassic faunas.” 4 THE GEOLOGICAL HISTORY OF MONTE SAN GIORGIO Monte San Giorgio belongs to the broad tectonic feature named Sudalpino , which encompasses all the rock formations lying South of the Insubric Line. The oldest rocks of Monte San Giorgio outcrop in spots along the shores of the Ceresio Lake, between the Brusino Arsizio custom house and the built-up area of Porto Ceresio. -
Geology and Mineral Resources of the Randolph Quadrangle, Utah -Wyoming
UNITED STATES DEPARTMENT OF THE INTERIOR Harold L. Ickes, Secretary GEOLOGICAL SURVEY W. C. Mendenhall, Director Bulletin 923 GEOLOGY AND MINERAL RESOURCES OF THE RANDOLPH QUADRANGLE, UTAH -WYOMING BY G. B. RICHARDSON UNITED STATES GOVERNMENT PRINTING OFFICE WASHINGTON : 1941 For sale by the Superintendent of Documents, Washington, D. O. ......... Price 55 cents HALL LIBRARY CONTENTS Pag* Abstract.____________--__-_-_-___-___-_---------------__----_____- 1 Introduction- ____________-__-___---__-_-_---_-_-----_----- -_______ 1 Topography. _____________________________________________________ 3 Bear River Range._.___---_-_---_-.---.---___-___-_-__________ 3 Bear River-Plateau___-_-----_-___-------_-_-____---___________ 5 Bear Lake-Valley..-_--_-._-_-__----__----_-_-__-_----____-____- 5 Bear River Valley.___---------_---____----_-_-__--_______'_____ 5 Crawford Mountains .________-_-___---____:.______-____________ 6 Descriptive geology.______-_____-___--__----- _-______--_-_-________ 6 Stratigraphy _ _________________________________________________ 7 Cambrian system.__________________________________________ 7 Brigham quartzite.____________________________________ 7 Langston limestone.___________________________________ 8 Ute limestone.__----_--____-----_-___-__--___________. 9 Blacksmith limestone._________________________________ 10 Bloomington formation..... _-_-_--___-____-_-_____-____ 11 Nounan limestone. _______-________ ____________________ 12 St. Charles limestone.. ---_------------------_--_-.-._ 13 Ordovician system._'_____________.___.__________________^__ -
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I I Rivista Italiana di Paleon roìor,iaeSrrltrqrriia I rolur ;;- -, | f;-' "oo, l UPPER OLENEKIAN (SPATHIAN) AMMONOIDS FROM CHIOS (LO\T/ER TRIASSIC, GREECE): TAXONOMY AND STRATIGRAPHIC POSITION. DOROTHEE MERTMANN' & VOLKER TACOBSHAGEN' Receh:ed July 1st,2002; accepted June 25,20A3 Key-raords: Ammonoidea, Triassic, Olenekian, Chios, Greece. There, the fossils are included in red limestones of rhe Hallstatt facies (Marmarorrapeza. Formation). Renz & Abstact. On the Greek island of Chios, Lower Triassic sections Renz (1948) have delivered rich ammonoid faunas from red limestones of the Hall- published a palaeontological description of statt facies. Here, we present a palaeontological description of Spatl-rian its ammonoids in a monograph. Bender (1970) was the ammonoids, which have been collected during two field campaigns by first to collect fossils from measured sections (CM i, kalian-German teams (Assereto et al. 1980; Gaetani et al. 1992). The II, III) in order to establish coordinared ammonoid and ammonoid assocìations are composed of Ceratitida and Phyllocerati- conodont stratigraphies. This author recognized, more- da, each order containing species of the Noritaceae, Hedenstroemia- ceae, Xenodiscaceae, Dinaritaceae, Pinacocerataceae, Phyllocerataceae, over, that the Spathian beds are overlain by lowermost Ptychitaceae, lJssuritaceae and Megaphyllitaceae. Long ranging gen- Anisian ones s/ith ammonoids comparable with faunas era, e.g. Procarnites and Leioplrylliter, are present as well as endemic of the so-called Hydaspian substage from the Himalayas ones, e.g. Cbiotites, which occurs exclusively in the Lower Trìassic of and Timor. Furthermore, Jacobshagen & Tietze (1974) Chios. The ammonoìd association is indicative of the Probungarites- described an associarion of both Spathian and Lower Subcolwmbites zone sensu Kumn.rel (1973a,). -
TREATISE ONLINE Number 48
TREATISE ONLINE Number 48 Part N, Revised, Volume 1, Chapter 31: Illustrated Glossary of the Bivalvia Joseph G. Carter, Peter J. Harries, Nikolaus Malchus, André F. Sartori, Laurie C. Anderson, Rüdiger Bieler, Arthur E. Bogan, Eugene V. Coan, John C. W. Cope, Simon M. Cragg, José R. García-March, Jørgen Hylleberg, Patricia Kelley, Karl Kleemann, Jiří Kříž, Christopher McRoberts, Paula M. Mikkelsen, John Pojeta, Jr., Peter W. Skelton, Ilya Tëmkin, Thomas Yancey, and Alexandra Zieritz 2012 Lawrence, Kansas, USA ISSN 2153-4012 (online) paleo.ku.edu/treatiseonline PART N, REVISED, VOLUME 1, CHAPTER 31: ILLUSTRATED GLOSSARY OF THE BIVALVIA JOSEPH G. CARTER,1 PETER J. HARRIES,2 NIKOLAUS MALCHUS,3 ANDRÉ F. SARTORI,4 LAURIE C. ANDERSON,5 RÜDIGER BIELER,6 ARTHUR E. BOGAN,7 EUGENE V. COAN,8 JOHN C. W. COPE,9 SIMON M. CRAgg,10 JOSÉ R. GARCÍA-MARCH,11 JØRGEN HYLLEBERG,12 PATRICIA KELLEY,13 KARL KLEEMAnn,14 JIřÍ KřÍž,15 CHRISTOPHER MCROBERTS,16 PAULA M. MIKKELSEN,17 JOHN POJETA, JR.,18 PETER W. SKELTON,19 ILYA TËMKIN,20 THOMAS YAncEY,21 and ALEXANDRA ZIERITZ22 [1University of North Carolina, Chapel Hill, USA, [email protected]; 2University of South Florida, Tampa, USA, [email protected], [email protected]; 3Institut Català de Paleontologia (ICP), Catalunya, Spain, [email protected], [email protected]; 4Field Museum of Natural History, Chicago, USA, [email protected]; 5South Dakota School of Mines and Technology, Rapid City, [email protected]; 6Field Museum of Natural History, Chicago, USA, [email protected]; 7North -
Precambrian and Paleozoic Geology of the Hudson Highlands
41 PRE-CAMBRIAN AND PALEOZOIC GEOLOGY OF THE HUDSON HIGHLANDS Kurt E. Lowe The City College Trip D Introduction The route of Trip D crosses the Hudson Highlands northwestward (perpen dicular to the structural trend) affording opportunities of studying the petrology, structure and geomorphology of the Pre-Cambrian crystallines. It then turns northeastward to reach the northern gateway of the Hudson gorge at Cornwall-on Hudson by following the belt of early Paleozoic sediments along the northwest border of the Highlands. These sediments and their structural relations to the Highlands crystallines are briefly examined in the field. The return leg of the trip again eros !!Ie s the Highlands (this time oblique to the structure) along the west side of the Hudson gorge to Bear Mt., where it crosses the Ri~er to Peekskill. The reader is referred to Lowe (1949, 1950) from which much of the following information has been extracted. The Hudson Highlands The Highlands are a chain of low, but rugged, mountain ranges extending about 140 miles from Reading, Pa. northeastward through northern New Jersey and southeastern New York into western. Connecticut. They are mostly Pre Cambrian crystallines, representing an ancient orogenic belt of Grenville (? ) sediments which were folded, faulted, metamorphosed and invaded by several igneous phases (Plate 1). The Hudson Highlands, a rather loose geographical term, refers to that portion of the mountain chain which lie s athwart the Hudson River in New York State. Geomorphology Geomorphically the Highlands are known as the Reading Prong of the New England Upland. In view of the long, continued exposure of the Highlands to subaerial erosion (perhaps since early Mesozoic times) present topographic features exhibit the effects of structural and lithologic control to a high degree. -
Geological Survey of Austria ©Geol
©Geol. Bundesanstalt, Wien; download unter www.geologie.ac.at und www.zobodat.at Berichte der Geologischen Bundesanstalt, 120 Berichte der Geologischen Bundesanstalt, Benjamin Sames (Ed.) th 10 International Symposium on the Cretaceous: ABSTRACTS Berichte der Geologischen Bundesanstalt, 120 www.geologie.ac.at Geological Survey of Austria ©Geol. Bundesanstalt, Wien; download unter www.geologie.ac.at und www.zobodat.at Berichte der Geologischen Bundesanstalt (ISSN 1017-8880) Band 120 10th International Symposium on the Cretaceous Vienna, August 21–26, 2017 — ABSTRACTS BENJAMIN SAMES (Ed.) ©Geol. Bundesanstalt, Wien; download unter www.geologie.ac.at und www.zobodat.at Berichte der Geologischen Bundesanstalt, 120 ISSN 1017-8880 Wien, im Juli 2017 10th International Symposium on the Cretaceous Vienna, August 21–26, 2017 – ABSTRACTS Benjamin Sames, Editor Dr. Benjamin Sames, Universität Wien, Department for Geodynamics and Sedimentology, Center for Earth Sciences, Althanstraße 14, 1090 Vienna, Austria. Recommended citation / Zitiervorschlag Volume / Gesamtwerk Sames, B. (Ed.) (2017): 10th International Symposium on the Cretaceous – Abstracts, 21–26 August 2017, Vienna. – Berichte der Geologischen Bundesanstalt, 120, 351 pp., Vienna. Abstract (example / Beispiel) Granier, B., Gèze, R., Azar, D. & Maksoud, S. (2017): Regional stages: What is the use of them – A case study in Lebanon. – In: Sames, B. (Ed.): 10th International Symposium on the Cretaceous – Abstracts, 21–26 August 2017, Vienna. – Berichte der Geologischen Bundesanstalt, 120, 102, Vienna. Cover design: Monika Brüggemann-Ledolter (Geologische Bundesanstalt). Cover picture: Postalm section, upper Campanian red pelagic limestone-marl cycles (CORBs) of the Nierental Formation, Gosau Group, Northern Calcareous Alps (Photograph: M. Wagreich). 10th ISC Logo: Benjamin Sames The 10th ISC Logo is composed of selected elements of the Viennese skyline with, from left to right, the Stephansdom (St. -
Body Size Trends and Recovery Amongst Bivalves Following the End-Triassic Mass Extinction
This is a repository copy of Body size trends and recovery amongst bivalves following the end-Triassic mass extinction. White Rose Research Online URL for this paper: http://eprints.whiterose.ac.uk/155942/ Version: Accepted Version Article: Atkinson, JW and Wignall, PB orcid.org/0000-0003-0074-9129 (2020) Body size trends and recovery amongst bivalves following the end-Triassic mass extinction. Palaeogeography, Palaeoclimatology, Palaeoecology, 538. 109453. ISSN 0031-0182 https://doi.org/10.1016/j.palaeo.2019.109453 © 2019 Elsevier B.V. All rights reserved. This manuscript version is made available under the CC-BY-NC-ND 4.0 license http://creativecommons.org/licenses/by-nc-nd/4.0/. Reuse This article is distributed under the terms of the Creative Commons Attribution-NonCommercial-NoDerivs (CC BY-NC-ND) licence. This licence only allows you to download this work and share it with others as long as you credit the authors, but you can’t change the article in any way or use it commercially. More information and the full terms of the licence here: https://creativecommons.org/licenses/ Takedown If you consider content in White Rose Research Online to be in breach of UK law, please notify us by emailing [email protected] including the URL of the record and the reason for the withdrawal request. [email protected] https://eprints.whiterose.ac.uk/ 1 Body size trends and recovery amongst bivalves following the end-Triassic 2 mass extinction 3 Jed W. Atkinson* and Paul B. Wignall 4 School of Earth and Environment, University of Leeds, Leeds, UK, LS2 9JT. -
IC-39 Geology and Ground Water Resources of Floyd and Polk
INFORMATIONCIRCULAR~ ~ GEOLOGY AND GROUND-WATER RESOURCES OF FLOYD AND POLK COUNTIES, GEORGIA by Charles W. Cressler THE GEOLOGICAL SURVEY OF GEORGIA DEPARTMENT OF MINES, MINING AND GEOLOGY Jesse H. Auvil, Jr. State Geologist and Director ATLANTA 1970 For convenience in selecting our reports from your bookshelves, they will be color-keyed across the spine by subject as follows: Red Valley & Ridge mapping and structural geology Dk. Purple Piedmont & Blue Ridge mapping and struc- tural geology Maroon Coastal Plain mapping and stratigraphy Lt. Green Paleontology Lt. Blue Coastal Zone studies Dk. Green Geochemical and Geophysical studies Dk. Blue Hydrology Olive Economic geology Mining directory Yellow Environmental studies Engineering studies Dk. Orange Bibliographies and lists of publications Brown Petroleum and natural gas Black Field trip guidebooks. Colors have been selected at random, and will be aug mented as new subjects are published. GEOLOGY AND GROUND-WATER RESOURCES OF FLOYD AND POLK COUNTIES, G EORG IA by Charles W. Cressler THE GEOLOGICAL SURVEY OF GEORGIA DEPARTMENT OF MINES, MINING AND GEOLOGY PREPARED IN COOPERATION WITH THE U.S. GEOLOGICAL SURVEY ATLANTA 1970 CONTENTS Page No. Abstract . 1 Introduction 1 Location and extent of area . 1 Physiography, topography, and climate 2 Purpose, scope, and methods of investigation 2 Well and spring numbering system 3 Previous investigations . 3 Acknowledgments . 3 Geologic formations and their water-bearing properties 4 Cambrian System . 4 Shady Dolomite 4 Rome Formation . 6 Conasauga Formation 9 Cambro-Ordovician Sediments . 13 Knox Group ..... 13 Copper Ridge Dolomite 13 Chepultepec Dolomite . 13 Longview Limestone 13 Ordovician System . 16 Newala Limestone 16 Lenoir Limestone 20 Mosheim Member 20 Deaton Member 22 Rockmart Slate 23 Other formations of Ordovician age . -
Paleontological Contributions
THE UNIVERSITY OF KANSAS PALEONTOLOGICAL CONTRIBUTIONS May 15, 1970 Paper 47 SIGNIFICANCE OF SUTURES IN PHYLOGENY OF AMMONOIDEA JURGEN KULLMANN AND JOST WIEDMANN Universinit Tubingen, Germany ABSTRACT Because of their complex structure ammonoid sutures offer best possibilities for the recognition of homologies. Sutures comprise a set of individual elements, which may be changed during the course of ontogeny and phylogeny as a result of heterotopy, hetero- morphy, and heterochrony. By means of a morphogenetic symbol terminology, sutural formulas may be established which show the composition of adult sutures as well as their ontogenetic development. WEDEKIND ' S terminology system is preferred because it is the oldest and morphogenetically the most consequent, whereas RUZHENTSEV ' S system seems to be inadequate because of its usage of different symbols for homologous elements. WEDEKIND ' S system includes only five symbols: E (for external lobe), L (for lateral lobe), I (for internal lobe), A (for adventitious lobe), U (for umbilical lobe). Investigations on ontogenetic development show that all taxonomic groups of the entire superorder Ammonoidea can be compared one with another by means of their sutural development, expressed by their sutural formulas. Most of the higher and many of the lower taxa can be solely characterized and arranged in phylogenetic relationship by use of their sutural formulas. INTRODUCTION Today very few ammonoid workers doubt the (e.g., conch shape, sculpture, growth lines) rep- importance of sutures as indication of ammonoid resent less complicated structures; therefore, phylogeny. The considerable advances in our numerous homeomorphs restrict the usefulness of knowledge of ammonoid evolution during recent these features for phylogenetic investigations. -
Level and Climate Change in a Short‐Lived Seaway: Jurassic of the Western Interior
University of Plymouth PEARL https://pearl.plymouth.ac.uk Faculty of Science and Engineering School of Geography, Earth and Environmental Sciences 2017-02 Faunal response to sea-level and climate change in a short-lived seaway: Jurassic of the Western Interior, USA Danise, S http://hdl.handle.net/10026.1/9712 10.1111/pala.12278 Palaeontology All content in PEARL is protected by copyright law. Author manuscripts are made available in accordance with publisher policies. Please cite only the published version using the details provided on the item record or document. In the absence of an open licence (e.g. Creative Commons), permissions for further reuse of content should be sought from the publisher or author. [Palaeontology, Vol. 60, Part 2, 2017, pp. 213–232] FAUNAL RESPONSE TO SEA-LEVEL AND CLIMATE CHANGE IN A SHORT-LIVED SEAWAY: JURASSIC OF THE WESTERN INTERIOR, USA by SILVIA DANISE1,2 and STEVEN M. HOLLAND1 1Department of Geology, University of Georgia, 210 Field Street, Athens, GA 30602-2501, USA; [email protected], [email protected] 2School of Geography, Earth & Environmental Sciences, Plymouth University, Drake Circus, Plymouth, PL4 8AA, UK Typescript received 29 October 2016; accepted in revised form 5 January 2017 Abstract: Understanding how regional ecosystems respond environments. The higher resilience of onshore communities to sea-level and environmental perturbations is a main chal- to third-order sea-level fluctuations and to the change from lenge in palaeoecology. Here we use quantitative abundance a carbonate to a siliciclastic system was driven by a few estimates, integrated within a sequence stratigraphic and abundant eurytopic species that persisted from the opening environmental framework, to reconstruct benthic commu- to the closing of the Seaway. -
Bibliography and Index
Bulletin No. 203. Series G, Miscellaneous, 23 DEPARTMENT OF THE INTERIOR UNITED STATES GEOLOGICAL SURVEY CHARLES .1). YVALCOTT, DIRECTOR BIBLIOGRAPHY AND INDEX FOR T I-I E Y E A. R 1 9 O 1 BY FRED BOUGHTON "WEEKS WASHINGTON - GOVERNMENT PRINTING OFFICE 1902 CONTENTS, Page. Letter of transmittal....................................................... 5 Introduction ......... 4 ................................................... 7 List of publications examined ............................................. 9 Bibliography ............................................................ 13 Addenda to bibliographies for previous years............................... 95 Classified key to the index ...........'.......... ............................ 97 Index ..................................................................... 103 LETTER OF TRANSM1TTAL. DEPARTMENT OF THE INTERIOR, UNITED STATES GEOLOGICAL SURVEY, Washington, D. 0., July % SIR: I have the honor to transmit herewith the manuscript of a Bibliography and Index of North American Geology, Paleontology, Petrology, and Mineralogy for the Year 1901, and to request that it be published as a Bulletin of the Survey. Yours respectfully, F. B. WEEKS. Hon. CHARLES D. WALCOTT, director United State* Geological Survey. BIBLIOGRAPHY AND INDEX OF NORTH AMERICAN GEOLOGY, PALEONTOLOGY, PETROLOGY, AND MINERALOGY FOR THE YEAR 1901. By FRED BOUGHTON WEEKS. INTRODUCTION. The preparation and arrangement of the material of the Bibliog raphy and Index for 1901 is similar to that adopted for the previous publications.(Bulletins Nos. 130, 135, 146, 149, 156, 162, 172, 188, and 189). Several papers that should have been entered in the pre vious bulletins are here recorded, and the date of publication is given with each entry. Bibliography. The bibliography consists of full titles of separate papers, arranged alphabetically by authors' names, an abbreviated reference to the publication in which the paper is printed, and a brief description of the contents, each paper being numbered for index reference.