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Recent Fossil Finds in the Indian Islands Group, Central Newfoundland
Current Research (2006) Newfoundland and Labrador Department of Natural Resources Geological Survey, Report 06-1, pages 221-231 RECENT FOSSIL FINDS IN THE INDIAN ISLANDS GROUP, CENTRAL NEWFOUNDLAND 1W.D. Boyce, P.Geo. and 2W.L. Dickson, P.Geo. 1Regional Geology Section 2Mineral Deposits Section ABSTRACT During the 2004 and 2005 field seasons a number of fossiliferous exposures of the Indian Islands Group rocks were exam- ined. The results of these fossil surveys are presented here. The occurrence of the bryozoan Stictopora scalpellum (Lonsdale, 1839) in many outcrops of the Silurian Indian Islands Group definitively dates these exposures as latest Wenlock (late Home- rian). Several richly fossiliferous localities yield faunas indicative of Wenlock, late Wenlock (Homerian), and middle Ludlow (late Gorstian to early Ludfordian) ages. INTRODUCTION Dudley, West Midlands, England, of late Homerian (latest Wenlock) age (Snell, 2004, page 6, Text-Figure 4). There is as yet no comprehensive, integrated lithostrati- graphic–biostratigraphic scheme for the Silurian shelly fau- Boyce (2004, page 7) identified Ptilodictya scalpellum nas of the Indian Islands Group (IIG). Furthermore, apart Lonsdale, 1839 from a sawdust-filled quarry near Glenwood from this report, the most extensive recent paleontological (JOD-2003-113 and LD05-0064 - see Plates 2 and 3) as well studies of the area remain those of Boyce et al. (1993), as from drill core at the Beaver Brook antimony mine Boyce and Ash (1994) and Donovan et al. (1997). (2004F016 - see Plate 4). During the summers of 2004 and 2005, Stictopora scalpellum (Lonsdale, 1839) was also iden- In 2004, a total of six days was spent in the field with tified from a number of additional IIG outcrops, including: G.C. -
Hydrogeology and Stratigraphy of the Dakota Formation in Northwest Iowa
WATER SUPPLY HYDROGEOLOGY AND J.A. MUNTER BULLETIN G.A. LUDVIGSON NUMBER 13 STRATIGRAPHY OF THE B.J. BUNKER 1983 DAKOTA FORMATION IN NORTHWEST IOWA Iowa Geological Survey Donald L. Koch State Geologist and Director 123 North Capitol Street Iowa City, Iowa 52242 IOWA GEOLOGICAL SURVEY WATER-SUPPLY BULLETIN NO. 13 1983 HYDROGEOLOGY AND STRATIGRAPHY OF THE DAKOTA FORMATION IN NORTHWEST IOWA J. A. Munter G. A. Ludvigson B. J. Bunker Iowa Geological Survey Iowa Geological Survey Donald L. Koch Director and State Geologist 123 North Capitol Street Iowa City, Iowa 52242 Foreword An assessment of the quantity and quality of water available from the Dakota (Sandstone) Formation 1n northwest Iowa is presented in this report. The as sessment was undertaken to provide quantitative information on the hydrology of the Dakota aquifer system to the Iowa Natural Resources Council for alloca tion of water for irrigation, largely as a consequence of the 1976-77 drought. Most area wells for domestic, livestock, and irrigation purposes only partial ly penetrated the Dakota Formation. Consequently, the long-term effects of significant increases in water withdrawals could not be assessed on the basis of existing wells. Acquisition of new data was based upon a drilling program designed to penetrate the entire sequence of Dakota sediments at key loca tions, after a thorough inventory and analysis of existing data. Definition of the distribution, thickness, and lateral and vertical changes in composition of the Dakota Formation has permitted the recognition of two mem bers. Additionally, Identification of the rock units that underlie the Dakota Formation has contributed greatly to our knowledge of the regional geology of northwest Iowa and the upper midwest. -
Stratigraphic Succession in Lower Peninsula of Michigan
STRATIGRAPHIC DOMINANT LITHOLOGY ERA PERIOD EPOCHNORTHSTAGES AMERICANBasin Margin Basin Center MEMBER FORMATIONGROUP SUCCESSION IN LOWER Quaternary Pleistocene Glacial Drift PENINSULA Cenozoic Pleistocene OF MICHIGAN Mesozoic Jurassic ?Kimmeridgian? Ionia Sandstone Late Michigan Dept. of Environmental Quality Conemaugh Grand River Formation Geological Survey Division Late Harold Fitch, State Geologist Pennsylvanian and Saginaw Formation ?Pottsville? Michigan Basin Geological Society Early GEOL IN OG S IC A A B L N Parma Sandstone S A O G C I I H E C T I Y Bayport Limestone M Meramecian Grand Rapids Group 1936 Late Michigan Formation Stratigraphic Nomenclature Project Committee: Mississippian Dr. Paul A. Catacosinos, Co-chairman Mark S. Wollensak, Co-chairman Osagian Marshall Sandstone Principal Authors: Dr. Paul A. Catacosinos Early Kinderhookian Coldwater Shale Dr. William Harrison III Robert Reynolds Sunbury Shale Dr. Dave B.Westjohn Mark S. Wollensak Berea Sandstone Chautauquan Bedford Shale 2000 Late Antrim Shale Senecan Traverse Formation Traverse Limestone Traverse Group Erian Devonian Bell Shale Dundee Limestone Middle Lucas Formation Detroit River Group Amherstburg Form. Ulsterian Sylvania Sandstone Bois Blanc Formation Garden Island Formation Early Bass Islands Dolomite Sand Salina G Unit Paleozoic Glacial Clay or Silt Late Cayugan Salina F Unit Till/Gravel Salina E Unit Salina D Unit Limestone Salina C Shale Salina Group Salina B Unit Sandy Limestone Salina A-2 Carbonate Silurian Salina A-2 Evaporite Shaley Limestone Ruff Formation -
Bedrock Geology of Dodge County, Wisconsin (Wisconsin Geological
MAP 508 • 2021 Bedrock geology of Dodge County, Wisconsin DODGE COUNTY Esther K. Stewart 88°30' 88°45' 88°37'30" 88°52'30" 6 EXPLANATION OF MAP UNITS Tunnel City Group, undivided (Furongian; 0–155 ft) FOND DU LAC CO 630 40 89°0' 6 ! 6 20 ! 10 !! ! ! A W ! ! 1100 W ! GREEN LAKE CO ! ! ! WW ! ! ! ! DG-92 ! ! ! 1100 B W! Includes Lone Rock and Mazomanie Formations. These formations are both DG-53 W ! «49 ! CORRELATION OF MAP UNITS !! ! 7 ! !W ! ! 43°37'30" R16E _tc EL709 DG-1205 R15E W R14E R15E DG-24 W! ! 1 Quaternary ! 980 ! W W 1 ! ! ! 6 DG-34 6 _ ! 1 R17E Os Lake 1 R16E 6 interbedded and laterally discontinuous and therefore cannot be mapped 1 6 W ! ! 1100 !! 175 940 Waupun DG-51 ! 980 « Oa ! R13E 6 Emily R14E W ! 43°37'30" ! ! ! 41 ¤151 B «49 ! ! ! ! Opc ! Drew «68 ! W ! East ! ! ! individually at this scale in Dodge County. Overlies Elk Mound Group across KW313 940 ! ! ! ! ! ! 940 ! W B ! ! - ! ! W ! ! ! ! ! ! !! Waupun ! W ! Undifferentiated sediment ! ! W! B 000m Cr W! ! º Libby Cr ! 3 INTRUSIVE SUPRACRUSTAL 3 1020 ! ! Waupun ! DG-37 W ! ! º 1020 a sharp contact. W ! 50 50 N ! ! KS450 ! ! ! IG300 ! B B Airport ! RO703 ! ! Brownsville ! ! ! ! ! ! 1060 ! ROCKS W ! ! ROCKS Unconsolidated sediments deposited by modern and glacial processes. 940 ° ! Qu ! W Br Rock SQ463 B ! Pink, gray, white, and green; coarse- to fine-grained; moderately to poorly 980 B River B B ! ! KT383 ! ! Generally 20–60 feet (ft) thick; ranges from absent where bedrock crops ! !! ! ! ! ! ! Su Lower Silurian ° ! ! ! ! ! 940 860 ! ! ! ! ! ! ! ! ! ! sorted; glauconitic sandstone, siltstone, and mudstone with variable W ! B B B ! ! ! 980 ! ! ! 780 ! Kummel !! out to more than 200 ft thick in preglacial bedrock valleys. -
Mechanical Properties of St. Peter Sandstone a Comparison of Field and Laboratory Results a Thesis Submitted to the Faculty of T
MECHANICAL PROPERTIES OF ST. PETER SANDSTONE A COMPARISON OF FIELD AND LABORATORY RESULTS A THESIS SUBMITTED TO THE FACULTY OF THE GRADUATE SCHOOL OF THE UNIVERSITY OF MINNESOTA BY MICHAEL EUGENE DITTES IN PARTIAL FULFILLMENT OF THE REQUIREMENTS FOR THE DEGREE OF MASTER OF SCIENCE DECEMBER, 2015 This thesis contains previously published material (Appendix E) in the “Journal of Geotechnical and Geoenvironmental Engineering” © 2002 ASCE. All other material © 2015 Michael E. Dittes All Rights Reserved. ACKNOWLEDGMENTS I would like to extend my thanks to those, who without their help I would not have been able to bring this project to completion. First and foremost, I thank Professor Joseph Labuz who took a chance on me, by offering me a TA-ship. Through my time in school, Joe helped me stay focused when I started to move off on tangents, offered timely advice, and over the years has become much more than my advisor. I am proud to think of him as a friend. Professors Andrew Drescher and Peter Huddleston also deserve special thanks for providing critical review of my work, and agreeing to sit on my thesis committee. To Ms. Tiffany Ralston who had an uncanny way of knowing what I needed to do, and how, before I knew myself. To Charles Nelson who helped me streamline my thesis project and helped me gain access to the Minnesota Library Archives construction site. To my fellow graduate students with whom I debated, joked and laughed, you helped me see things that I was missing. Your input was invaluable and you have my deep appreciation. -
Size Distribution of the Late Devonian Ammonoid Prolobites: Indication for Possible Mass Spawning Events
Swiss J Geosci (2010) 103:475–494 DOI 10.1007/s00015-010-0036-y Size distribution of the Late Devonian ammonoid Prolobites: indication for possible mass spawning events Sonny Alexander Walton • Dieter Korn • Christian Klug Received: 17 December 2009 / Accepted: 18 October 2010 / Published online: 15 December 2010 Ó Swiss Geological Society 2010 Abstract Worldwide, the ammonoid genus Prolobites is Abbreviations only known from a few localities, and from these fossil SMF Senckenberg Museum, Frankfurt a. M., Germany beds almost all of the specimens are adults as shown by the MB.C. Cephalopod collection of the Museum fu¨r presence of a terminal growth stage. This is in marked Naturkunde Berlin (the collections of Franz contrast to the co-occurring ammonoid genera such as Ademmer, Werner Bottke, and Harald Simon Sporadoceras, Prionoceras, and Platyclymenia. Size dis- are incorporated here) tribution of specimens of Prolobites from three studied localities show that, unlike in the co-occurring ammonoid species, most of the material belongs to adult individuals. The morphometric analysis of Prolobites delphinus Introduction (SANDBERGER &SANDBERGER 1851) demonstrates the intra- specific variability including variants with elliptical coiling The mid-Fammenian (Late Devonian) ammonoid genus and that dimorphism is not detectable. The Prolobites Prolobites is only known from a few localities worldwide, material shows close resemblance to spawning populations mainly in the Rhenish Mountains and the South Urals. of Recent coleoids such as the squid Todarodes filippovae Where it does occur, the majority of the specimens show a ADAM 1975. Possible mass spawning events are discussed terminal growth stage suggesting that these are adults. -
Cave of the Mounds – National Natural Landmark Paleotales Grade 9-12 Fossil Mini-Course Glossary of Terms
Educational Programs PaleoTALES Grade 9-12 Fossil Mini-Course Wisconsin DPI Standards: Objectives: At the end of this program, the student should be able to: Science: A.12.3, D.12.4, D.12.5, D.12.6, • Apply fossil related vocabulary. D.12.11, D.12.12, E.12.2 • Name & identify the four fossil types. • Describe the processes involved in fossil formation. • Explain the importance of fossils in understand how the earth has changed through time. • Examine and identify 6-8 fossils and determine the type of each. Activities: Times are approximate and specific reinforcement activities will vary based on the needs of each individual group. 30 minutes The interactive audio visual presentation provides the definition of a fossil, investigation of the four fossil types, fossil formation and processes of collecting and identifying fossils. 30 minutes Sluicing gives participants a hands-on experience to discover their own collection like a true paleontologist. Guided identification shows examples of both local and non-local fossils. 50 minutes The Cave Tour fosters a connection between previously discussed fossil and geology concepts with the experience of observing embedded within the rock of the Cave. Pre-teach Vocabulary: A glossary of terms is provided for your convenience. Geology Fossil Cephalopod Brachiopod Geologic Time Scale - Mold Gastropod Echinoid Geologic Processes - Cast Pelecypod Goniatite Sedimentary rock - Trace Horn Coral Petrified Wood Law of Superposition - Body Crinoid Dinosaur Bone Limestone Paleontology Trilobite Shark Teeth Learning Extension: Try this before or after your visit to reinforce important concepts. 1. Closely examine fossils, identify and determine the age of your fossils with a fossil identification book. -
9 Paleontological Conference Th
Polish Academy of Sciences Institute of Paleobiology 9th Paleontological Conference Warszawa, 10–11 October 2008 Abstracts Warszawa Praha Bratislava Edited by Andrzej Pisera, Maria Aleksandra Bitner and Adam T. Halamski Honorary Committee Prof. Oldrich Fatka, Charles University of Prague, Prague Prof. Josef Michalík, Slovak Academy of Sciences, Bratislava Assoc. Prof. Jerzy Nawrocki, Polish Geological Institute, Warszawa Prof. Tadeusz Peryt, Polish Geological Institute, Warszawa Prof. Grzegorz Racki, Institute of Paleobiology, Warszawa Prof. Jerzy Trammer, University of Warsaw, Warszawa Prof. Alfred Uchman, Jagiellonian University, Kraków Martyna Wojciechowska, National Geographic Polska, Warszawa Organizing Committee Dr Maria Aleksandra Bitner (Secretary), Błażej Błażejewski, MSc, Prof. Andrzej Gaździcki, Dr Adam T. Halamski, Assoc. Prof. Anna Kozłowska, Assoc. Prof. Andrzej Pisera Sponsors Institute of Paleobiology, Warszawa Polish Geological Institute, Warszawa National Geographic Polska, Warszawa Precoptic Co., Warszawa Cover picture: Quenstedtoceras henrici Douvillé, 1912 Cover designed by Aleksandra Hołda−Michalska Copyright © Instytut Paleobiologii PAN Nakład 150 egz. Typesetting and Layout: Aleksandra Szmielew Warszawska Drukarnia Naukowa PAN ABSTRACTS Paleotemperature and paleodiet reconstruction on the base of oxygen and carbon isotopes from mammoth tusk dentine and horse teeth enamel during Late Paleolith and Mesolith MARTINA ÁBELOVÁ State Geological Institute of Dionýz Štúr, Mlynská dolina 1, SK−817 04 Bratislava 11, Slovak Republic; [email protected] The use of stable isotopes has proven to be one of the most effective methods in re− constructing paleoenvironments and paleodiet through the upper Pleistocene period (e.g. Fricke et al. 1998; Genoni et al. 1998; Bocherens 2003). This study demonstrates how isotopic data can be employed alongside other forms of evidence to inform on past at great time depths, making it especially relevant to the Palaeolithic where there is a wealth of material potentially available for study. -
Geologic Range: Early Cambrian to Holocene • Mode of Life: Marine and Freshwater
Class Bivalvia or Pelecypoda • Name: Bivalvia means " two" (bi) + " shells" (valvia). • Geologic range: Early Cambrian to Holocene • Mode of life: Marine and freshwater. Many species are infaunal burrowers or borers, and others are epifaunal. Class Gastropoda • Snails and slugs • Chief characteristics: – Asymmetrical, spiral- coiled calcareous shell. • Name: means "stomach" (gastro) + "foot" (pod). • Geologic range: Early Cambrian to Holocene. • Mode of life: Marine, freshwater or terrestrial. Class Cephalopoda • Squid, octopus, Nautilus, cuttlefish • Name: means " head" (kephale) + " foot" (pod). • Chief characteristics: – Symmetrical cone-shaped shell with internal partitions called septae – Shell may be straight or coiled in a spiral which lies in a plane. – Smooth or contorted sutures visible on the outside of some fossils mark the place where septae join the outer shell. Class Cephalopoda • Geologic range: Late Cambrian to Holocene • Mode of life: Marine only; carnivorous (meat- eating) swimmers. • Types of Paleozoic cephalopods: – Nautiloids – Ammonoids – Coleoids Nautiloid Cephalopods • The shells of nautiloid cephalopods have smoothly curved septa, which produce simple, straight or curved sutures. • Geologic range: Cambrian to Holocene Ammonoid Cephalopods • Ammonoid cephalopods have complex, wrinkled, crenulated septa, which produce angular or dendritic sutures. • Geologic range: Devonian to Cretaceous - all extinct. Ammonoid Cephalopods • There are three basic types of sutures in ammonoid shells: – Goniatite or goniatitic (septae -
United States National Museum Bulletin 262
SMITHSONIAN INSTITUTION MUSEUM O F NATURAL HISTORY For sale by the Superintendent of Documents, U.S. Government Printing Office Washington, D.C., 20402 - Price 70 cents UNITED STATES NATIONAL MUSEUM BULLETIN 262 Catalog of the Type Specimens of Invertebrate Fossils LOUIS R. PURNELL Part I: Paleozoic Cephalopoda SMITHSONIAN INSTITUTION PRESS WASHINGTON, D.C. 1968 Publications of the United States National Museum The scientific publications of the United States National Museum in- clude two series, Proceedings of the United States National Museum and United States National Museum Bulletin. In these series are published original articles and monographs dealing with the collections and work of the Museum and setting forth newly ac- quired facts in the field of anthropology, biology, geology, history, and technology. Copies of each publication are distributed to libraries and scientific organizations and to specialists and others interested in the various subjects. The Proceedings, begun in 1878, are intended for the publication, in separate form, of shorter papers. These are gathered in volumes, octavo in size, with the publication date of each paper recorded in the table of contents of the volume. In the Bulletin series, the first of which was issued in 1875, appear longer, separate publications consisting of monographs (occasionally in several parts) and volumes in which are collected works on related sub- jects. Bulletins are either octavo or quarto in size, depending on the the needs of the presentation. Since 1902, papers relating to the botanical collections of the Museum have been published in the Bulletin series under the heading Contributions from the United States National Herbarium. -
Alpinites and Other Posttornoceratidae (Goniatitida, Famennian)
Mitt. Mus. Nat.kd. Berl., Geowiss. Reihe 5 (2002) 51-73 10.11.2002 Alpinites and other Posttornoceratidae (Goniatitida, Famennian) R. Thomas Becker' With 6 figures, 1 table and 3 plates Summary The rediscovery of the supposedly lost type allows a revision of Alpinites Bogoslovskiy, 1971, the most advanced genus of the Posttornoceratidae. The type-species, Alp. kayseri Schindewolf, 1923, is so far only known from the Carnic Alps. Alp. schultzei n. sp. from the eastern Anti-Atlas of Morocco is closely related to AZp. kajruktensis n. sp. (= Alp. kayseri in Bogoslovskiy 1971) from Kazakhstan. A second new and more common species of southern Morocco, Alp. zigzag n. sp., is also known from the Holy Cross Mountains (Poland). The taxonomy and phylogeny of other Posttornoceratidae are discussed. The holotype of Exotornoceras nehdense (Lange, 1929) was recovered and is re-illustrated; it is conspecific with Exot. superstes (Wedekind, 1908). The genus and species is also here first recorded from Morocco. Post. weyeri Korn, 1999 is a subjective synonym of Post. posthurnurn (Wedekind, 1918) in which strongly biconvex growth lines, as typical for the family, are observed for the first time. Goniatites lenticularis Richter, 1848 is a nomen dubium within Discoclyrnenia, Clyrnenia polytrichus in Richter (1848) is a Falcitornoceras. It seems possible to distinguish an extreme thin and trochoid Disco. haueri (Miinster, 1840) from the tegoid Disco. cucullata (v. Buch, 1839). Various taxa are excluded from the Posttornoceratidae. Posttornoceras sapiens Korn, 1999 forms the type-species of Maidero- ceras n. gen.. Discoclyrnenia n. sp. of Miiller (1956) is assigned to Maid. rnuelleri n. -
On the Causes of Mass Extinctions
ÔØ ÅÒÙ×Ö ÔØ On the causes of mass extinctions David P.G. Bond, Stephen E. Grasby PII: S0031-0182(16)30691-5 DOI: doi: 10.1016/j.palaeo.2016.11.005 Reference: PALAEO 8040 To appear in: Palaeogeography, Palaeoclimatology, Palaeoecology Received date: 16 August 2016 Revised date: 2 November 2016 Accepted date: 5 November 2016 Please cite this article as: Bond, David P.G., Grasby, Stephen E., On the causes of mass extinctions, Palaeogeography, Palaeoclimatology, Palaeoecology (2016), doi: 10.1016/j.palaeo.2016.11.005 This is a PDF file of an unedited manuscript that has been accepted for publication. As a service to our customers we are providing this early version of the manuscript. The manuscript will undergo copyediting, typesetting, and review of the resulting proof before it is published in its final form. Please note that during the production process errors may be discovered which could affect the content, and all legal disclaimers that apply to the journal pertain. ACCEPTED MANUSCRIPT On the causes of mass extinctions David P.G. Bond1* and Stephen E. Grasby2, 3 1School of Environmental Sciences, University of Hull, Hull, HU6 7RX, United Kingdom 2Geological Survey of Canada, 3303 33rd St. N.W. Calgary AB Canada, T2L 2A7. 3Department of Geoscience, University of Calgary, Calgary AB Canada. *Corresponding author. E-mail: [email protected] (D. Bond). ACCEPTED MANUSCRIPT ACCEPTED MANUSCRIPT ABSTRACT The temporal link between large igneous province (LIP) eruptions and at least half of the major extinctions of the Phanerozoic implies that large scale volcanism is the main driver of mass extinction.