CONODONT BIOSTRATIGRAPHY and ... -.: Palaeontologia Polonica
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03-Alekseev and Goreva (Neognathodus).P65
Lucas, S.G., et al. eds., 2013, The Carboniferous-Permian Transition. New Mexico Museum of Natural History and Science, Bulletin 60. 1 THE CONODONT NEOGNATHODUS BOTHROPS MERRILL, 1972 AS THE MARKER FOR THE LOWER BOUNDARY OF THE MOSCOVIAN STAGE (MIDDLE PENNSYLVANIAN) ALEXANDER S. ALEKSEEV1 AND NATALIA V. GOREVA 2 1 Department of Paleontology, Geological Faculty, Moscow State University, Russia, email: aaleks@geol. msu.ru; 2 Geological institute of Russian Academy of Science, Moscow, Russia, email: [email protected] Abstract—The Moscovian Stage constitutes the Middle Pennsylvanian Series of the Carboniferous System, but a biostratigraphic marker and GSSP for it have not yet been designated. The exact position of the Moscovian boundary cannot be defined properly because in the type area the basal Vereian unconformably overlies the Mississippian limestone or the alluvial and lagoonal Aza Formation of the uppermost Bashkirian. The Task Group to establish a GSSP close to the existing Bashkirian-Moscovian boundary suggested several potential markers among foraminifers and conodonts, but the search for a marker near traditional base of the global Moscovian Stage has stalled. It may be more productive to search for FADs in the lower Moscovian, above the traditional base, to designate the lower boundary of the stage. Relatively rich Vereian and Kashirian conodont assemblages have been recovered from the southwest Moscow Basin, as well as from the Oka-Tsna Swell. The most complete information on the distribution of conodonts in the Vereian- Kashirian boundary interval was obtained from the Yambirno section (Oka-Tsna Swell). The greatest change in conodont assemblages does not occur near the level of the traditional base of the Moscovian, but stratigraphically higher. -
Early Silurian Oceanic Episodes and Events
Journal of the Geological Society, London, Vol. 150, 1993, pp. 501-513, 3 figs. Printed in Northern Ireland Early Silurian oceanic episodes and events R. J. ALDRIDGE l, L. JEPPSSON 2 & K. J. DORNING 3 1Department of Geology, The University, Leicester LE1 7RH, UK 2Department of Historical Geology and Palaeontology, SiSlvegatan 13, S-223 62 Lund, Sweden 3pallab Research, 58 Robertson Road, Sheffield $6 5DX, UK Abstract: Biotic cycles in the early Silurian correlate broadly with postulated sea-level changes, but are better explained by a model that involves episodic changes in oceanic state. Primo episodes were characterized by cool high-latitude climates, cold oceanic bottom waters, and high nutrient supply which supported abundant and diverse planktonic communities. Secundo episodes were characterized by warmer high-latitude climates, salinity-dense oceanic bottom waters, low diversity planktonic communities, and carbonate formation in shallow waters. Extinction events occurred between primo and secundo episodes, with stepwise extinctions of taxa reflecting fluctuating conditions during the transition period. The pattern of turnover shown by conodont faunas, together with sedimentological information and data from other fossil groups, permit the identification of two cycles in the Llandovery to earliest Weniock interval. The episodes and events within these cycles are named: the Spirodden Secundo episode, the Jong Primo episode, the Sandvika event, the Malm#ykalven Secundo episode, the Snipklint Primo episode, and the lreviken event. Oceanic and climatic cyclicity is being increasingly semblages (Johnson et al. 1991b, p. 145). Using this recognized in the geological record, and linked to major and approach, they were able to detect four cycles within the minor sedimentological and biotic fluctuations. -
Subsurface Facies Analysis of the Devonian Berea Sandstone in Southeastern Ohio
SUBSURFACE FACIES ANALYSIS OF THE DEVONIAN BEREA SANDSTONE IN SOUTHEASTERN OHIO William T. Garnes 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 December 2014 Committee: James Evans, Advisor Jeffrey Snyder Charles Onasch ii ABSTRACT James Evans, Advisor The Devonian Berea Sandstone is an internally complex, heterogeneous unit that appears prominently both in outcrop and subsurface in Ohio. While the unit is clearly deltaic in outcrops in northeastern Ohio, its depositional setting is more problematic in southeastern Ohio where it is only found in the subsurface. The goal of this project was to search for evidence of a barrier island/inlet channel depositional environment for the Berea Sandstone to assess whether the Berea Sandstone was deposited under conditions in southeastern Ohio unique from northeastern Ohio. This project involved looking at cores from 5 wells: 3426 (Athens Co.), 3425 (Meigs Co.), 3253 (Athens Co.), 3252 (Athens Co.), and 3251 (Athens Co.) In cores, the Berea Sandstone ranges from 2 to 10 m (8-32 ft) thick, with an average thickness of 6.3 m (20.7 ft). Core descriptions involved hand specimens, thin section descriptions, and core photography. In addition to these 5 wells, the gamma ray logs from 13 wells were used to interpret the architecture and lithologies of the Berea Sandstone in Athens Co. and Meigs Co. as well as surrounding Vinton, Washington, and Morgan counties. Analysis from this study shows evidence of deltaic lobe progradation, abandonment, and re-working. Evidence of interdistributary bays with shallow sub-tidal environments, as well as large sand bodies, is also present. -
Pennsylvanian Boundary Unconformity in Marine Carbonate Successions
University of Nebraska - Lincoln DigitalCommons@University of Nebraska - Lincoln Dissertations & Theses in Earth and Atmospheric Earth and Atmospheric Sciences, Department of Sciences Summer 6-2014 ORIGIN AND DISTRIBUTION OF THE MISSISSIPPIAN – PENNSYLVANIAN BOUNDARY UNCONFORMITY IN MARINE CARBONATE SUCCESSIONS WITH A CASE STUDY OF THE KARST DEVELOPMENT ATOP THE MADISON FORMATION IN THE BIGHORN BASIN, WYOMING. Lucien Nana Yobo University of Nebraska-Lincoln, [email protected] Follow this and additional works at: http://digitalcommons.unl.edu/geoscidiss Part of the Geochemistry Commons, Geology Commons, Sedimentology Commons, and the Stratigraphy Commons Nana Yobo, Lucien, "ORIGIN AND DISTRIBUTION OF THE MISSISSIPPIAN – PENNSYLVANIAN BOUNDARY UNCONFORMITY IN MARINE CARBONATE SUCCESSIONS WITH A CASE STUDY OF THE KARST DEVELOPMENT ATOP THE MADISON FORMATION IN THE BIGHORN BASIN, WYOMING." (2014). Dissertations & Theses in Earth and Atmospheric Sciences. 59. http://digitalcommons.unl.edu/geoscidiss/59 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. ORIGIN AND DISTRIBUTION OF THE MISSISSIPPIAN – PENNSYLVANIAN BOUNDARY UNCONFORMITY IN MARINE CARBONATE SUCCESSIONS WITH A CASE STUDY OF THE KARST DEVELOPMENT ATOP THE MADISON FORMATION IN THE BIGHORN BASIN, WYOMING. By Luscalors Lucien Nana Yobo A THESIS Presented to the Faculty of The Graduate College at the University of Nebraska In Partial Fulfillment of Requirements For the Degree of Master of Science Major: Earth and Atmospheric Sciences Under the Supervision of Professor Tracy D. -
Sequence Biostratigraphy of Carboniferous-Permian Boundary
Brigham Young University BYU ScholarsArchive Theses and Dissertations 2019-07-01 Sequence Biostratigraphy of Carboniferous-Permian Boundary Strata in Western Utah: Deciphering Eustatic and Tectonic Controls on Sedimentation in the Antler-Sonoma Distal Foreland Basin Joshua Kerst Meibos Brigham Young University Follow this and additional works at: https://scholarsarchive.byu.edu/etd Part of the Physical Sciences and Mathematics Commons BYU ScholarsArchive Citation Meibos, Joshua Kerst, "Sequence Biostratigraphy of Carboniferous-Permian Boundary Strata in Western Utah: Deciphering Eustatic and Tectonic Controls on Sedimentation in the Antler-Sonoma Distal Foreland Basin" (2019). Theses and Dissertations. 7583. https://scholarsarchive.byu.edu/etd/7583 This Thesis is brought to you for free and open access by BYU ScholarsArchive. It has been accepted for inclusion in Theses and Dissertations by an authorized administrator of BYU ScholarsArchive. For more information, please contact [email protected], [email protected]. Sequence Biostratigraphy of Carboniferous-Permian Boundary Strata in Western Utah: Deciphering Eustatic and Tectonic Controls on Sedimentation in the Antler-Sonoma Distal Foreland Basin Joshua Kerst Meibos A thesis submitted to the faculty of Brigham Young University in partial fulfillment of the requirements for the degree of Master of Science Scott M. Ritter, Chair Brooks B. Britt Sam Hudson Department of Geological Sciences Brigham Young University Copyright © 2019 Joshua Kerst Meibos All Rights Reserved ABSTRACT Sequence Biostratigraphy of Carboniferous-Permian Boundary Strata in Western Utah: Deciphering Eustatic and Tectonic Controls on Sedimentation in the Antler-Sonoma Distal Foreland Basin Joshua Kerst Meibos Department of Geological Sciences, BYU Master of Science The stratal architecture of the upper Ely Limestone and Mormon Gap Formation (Pennsylvanian-early Permian) in western Utah reflects the interaction of icehouse sea-level change and tectonic activity in the distal Antler-Sonoma foreland basin. -
VOLUME 33 December 2017
VOLUME 33 December 2017 Volume 33 Table of Contents EXECUTIVE’S COLUMN…………………………………………………………………..…….. 2 OBITUARY……………………………………………………………………………………..…5 SCCS REPORTS………………………………………………………………………………….7 ANNUAL REPORT TO ICS FOR 2016-2017…………………………………………………..….7 TASK GROUP REPORTS FOR 2016-2017 AND WORK PLANS FOR 2017 FISCAL YEAR………….11 Report of the task group to establish a GSSP close to the existing Viséan-Serpukhovian boundary…………11 Report of the task group to establish a GSSP close to the existing Bashkirian-Moscovian boundary………16 Report of the task group to establish the Moscovian-Kasimovian and Kasimovian-Gzhelian boundaries…....18 SCCS DOCUMENTS (CONTRIBUTIONS BY MEMBERS)…………………………………...……21 SHALLOW-WATER SIPHONODELLIDS AND DEFINITION OF THE DEVONIAN-CARBONIFEROUS BOUNDARY…………………………………………………………………………………….21 REPORT FOR PROGRESS FOR 2017 ACTIVITIES IN THE CANTABRIAN MOUNTAINS, SPAIN AND THE AMAZONAS BASIN, BRAZIL……………………………………………...………………26 TAXONOMIC AND STRATIGRAPHIC PROBLEMS CONCERNING THE CONODONTS LOCHRIEA SENCKENBERGICA NEMIROVSKAYA, PERRET & MEISCHNER, 1994 AND LOCHRIEA ZIEGLERI NEMIROVSKAYA, PERRET & MEISHCNER, 1994-CONSEQUENCES FOR DEFINING THE VISÉAN- SERPUKHOVIAN BOUNDARY………………………………………………………………………………...28 PROGRESS ON THE VISÉAN-SERPUKHOVIAN BOUNDARY IN SOUTH CHINA AND GERMANY……………………………………………………………………………………..35 POTENTIAL FOR A MORE PRECISE CORRELATION OF THE BASHKIRIAN AMMONOID AND FORAMINIFERAL ZONES IN THE SOUTH URALS…………………………………………..……42 CHEMOMETRICS AND CARBONIFEROUS MEDULLOSALEAN FRONDS: IMPLICATIONS FOR CARBONIFEROUS PHYTOSTRATIGRAPHY…………………………………………………...…45 -
Conodont Biostratigraphy of the Bakken and Lower Lodgepole Formations (Devonian and Mississippian), Williston Basin, North Dakota Timothy P
University of North Dakota UND Scholarly Commons Theses and Dissertations Theses, Dissertations, and Senior Projects 1986 Conodont biostratigraphy of the Bakken and lower Lodgepole Formations (Devonian and Mississippian), Williston Basin, North Dakota Timothy P. Huber University of North Dakota Follow this and additional works at: https://commons.und.edu/theses Part of the Geology Commons Recommended Citation Huber, Timothy P., "Conodont biostratigraphy of the Bakken and lower Lodgepole Formations (Devonian and Mississippian), Williston Basin, North Dakota" (1986). Theses and Dissertations. 145. https://commons.und.edu/theses/145 This Thesis is brought to you for free and open access by the Theses, Dissertations, and Senior Projects at UND Scholarly Commons. It has been accepted for inclusion in Theses and Dissertations by an authorized administrator of UND Scholarly Commons. For more information, please contact [email protected]. CONODONT BIOSTRATIGRAPHY OF THE BAKKEN AND LOWER LODGEPOLE FORMATIONS (DEVONIAN AND MISSISSIPPIAN), WILLISTON BASIN, NORTH DAKOTA by Timothy P, Huber Bachelor of Arts, University of Minnesota - Morris, 1983 A Thesis Submitted to the Graduate Faculty of the University of North Dakota in partial fulfillment of the requirements for the degree of Master of Science Grand Forks, North Dakota December 1986 This thesis submitted by Timothy P. Huber in partial fulfillment of the requirements for the Degree of Master of Science from the University of North Dakota has been read by the Faculty Advisory Committee under whom the work has been done, and is hereby approved. This thesis meets the standards for appearance and conforms to the style and format requirements of the Graduate School at the University of North Dakota and is hereby approved. -
Reconstruction of the Multielement Apparatus of the Earliest Triassic Conodont, Hindeodus Parvus, Using Synchrotron Radiation X-Ray Micro-Tomography
Journal of Paleontology, 91(6), 2017, p. 1220–1227 Copyright © 2017, The Paleontological Society 0022-3360/17/0088-0906 doi: 10.1017/jpa.2017.61 Reconstruction of the multielement apparatus of the earliest Triassic conodont, Hindeodus parvus, using synchrotron radiation X-ray micro-tomography Sachiko Agematsu,1 Kentaro Uesugi,2 Hiroyoshi Sano,3 and Katsuo Sashida4 1Faculty of Life and Environmental Sciences, University of Tsukuba, Ibaraki 305-8572, Japan 〈[email protected]〉 2Japan Synchrotron Radiation Research Institute (JASRI/SPring-8), Sayo, Hyogo 679-5198, Japan 〈[email protected]〉 3Department of Earth and Planetary Sciences, Kyushu University, Fukuoka 819-0395, Japan 〈[email protected]〉 4Faculty of Life and Environmental Sciences, University of Tsukuba, Ibaraki 305-8572, Japan 〈[email protected]〉 Abstract.—Earliest Triassic natural conodont assemblages preserved as impressions on bedding planes occur in a claystone of the Hashikadani Formation, which is part of the Mino Terrane, a Jurassic accretionary complex in Japan. In this study, the apparatus of Hindeodus parvus (Kozur and Pjatakova, 1976) is reconstructed using synchrotron radiation micro-tomography (SR–μCT). This species has six kinds of elements disposed in 15 positions forming the conodont apparatus. Carminiscaphate, angulate, and makellate forms are settled in pairs in the P1,P2, and M posi- tions, respectively. The single alate element is correlated with the S0 position. The S array is a cluster of eight rami- forms, subdivided into two inner pairs of digyrate S1–2 and two outer pairs of bipennate S3–4 elements. The reconstruction is similar to a well-known ozarkodinid apparatus model. -
Conodont Stratigraphy and Palaeontology of the Namurian of Belgium
Mémoires pour servir à l'explication Toelichtende Verhandelingen des Cartes géologiques et minières voor de Geologische kaart en Mijnkaart de la Belgique van België MÉMOIRE No 10 VERHANDELING Nr 10 CONODONT STRATIGRAPHY AND PALAEONTOLOGY OF THE NAMURIAN OF BELGIUM BY A. C. HIGGINS and J. BOUCKAERT Department of Geology Service Géologique de Belgique University of Sheffield MINISTÈRE DES AFFAIRES ÉCONOMIQUES MINISTERIE VAN ECONOMISCHE ZAKEN ADMINISTRATION DES MINES BESTUUR VAN HET MIJNWEZEN Service Géologique de Belgique Aardkundige Dienst van België 13, Rue Jenner, 13 13, Jennerstraat, 13 BRUXELLES 4 BRUSSEL 4 Mém. Expl. Cartes Géologiques et Minières de la Belgique. 1968 N° 10 64 p 6 pl. Toelicht. Verhand. Geologische kaart en Mijnkaart van België. SERVICE GÉOLOGIQUE DE BELGIQUE MÉMOIRE N° 10 CONODONT STRATIGRAPHY AND PALAEONTOLOGY OF THE NAMURIAN OF BELGIUM BY A. C. HIGGINS and J. BOUCKAERT Department of Geology Service Géologique de Belgique University of Sheffield BRUXELLES IMPRIMERIE HAYEZ, s. p. r. 4, rue Fin 1968 SUMMARY The sequence of conodont faunas in the Namurian of Belgium is described and compared with faunas of the same age in North America, western Europe and Japan. The faunas exhibit major changes within the Namurian in the Chokerian {HI), Alportian (H2) and Kinderscoutian (Ri) sub-stages involving the appearance of new species and genera and the disappearance of many pre-existing ones. These changes take place at approximately the position of the Mississippian- Pennsylvanian boundary in North America. The palaeontology of these faunas is dealt with in detail and 47 species and sub-species have been recognised amongst which Angulodus simplex, Lonchodina bischoffi, Idiognathoides sulcata sulcata, Idiognathoides sulcata parva, Idiognathoides minuta, Streptognathodus lateralis and Gnathodus bilineatus bollandensis are considered new. -
Exceptional Fossil Preservation During CO2 Greenhouse Crises? Gregory J
Palaeogeography, Palaeoclimatology, Palaeoecology 307 (2011) 59–74 Contents lists available at ScienceDirect Palaeogeography, Palaeoclimatology, Palaeoecology journal homepage: www.elsevier.com/locate/palaeo Exceptional fossil preservation during CO2 greenhouse crises? Gregory J. Retallack Department of Geological Sciences, University of Oregon, Eugene, Oregon 97403, USA article info abstract Article history: Exceptional fossil preservation may require not only exceptional places, but exceptional times, as demonstrated Received 27 October 2010 here by two distinct types of analysis. First, irregular stratigraphic spacing of horizons yielding articulated Triassic Received in revised form 19 April 2011 fishes and Cambrian trilobites is highly correlated in sequences in different parts of the world, as if there were Accepted 21 April 2011 short temporal intervals of exceptional preservation globally. Second, compilations of ages of well-dated fossil Available online 30 April 2011 localities show spikes of abundance which coincide with stage boundaries, mass extinctions, oceanic anoxic events, carbon isotope anomalies, spikes of high atmospheric carbon dioxide, and transient warm-wet Keywords: Lagerstatten paleoclimates. Exceptional fossil preservation may have been promoted during unusual times, comparable with fi Fossil preservation the present: CO2 greenhouse crises of expanding marine dead zones, oceanic acidi cation, coral bleaching, Trilobite wetland eutrophication, sea level rise, ice-cap melting, and biotic invasions. Fish © 2011 Elsevier B.V. All rights reserved. Carbon dioxide Greenhouse 1. Introduction Zeigler, 1992), sperm (Nishida et al., 2003), nuclei (Gould, 1971)and starch granules (Baxter, 1964). Taphonomic studies of such fossils have Commercial fossil collectors continue to produce beautifully pre- emphasized special places where fossils are exceptionally preserved pared, fully articulated, complex fossils of scientific(Simmons et al., (Martin, 1999; Bottjer et al., 2002). -
Permian (Artinskian to Wuchapingian) Conodont Biostratigraphy in the Tieqiao Section, Laibin Area, South China
Permian (Artinskian to Wuchapingian) conodont biostratigraphy in the Tieqiao section, Laibin area, South China Y.D. Suna, b*, X.T. Liuc, J.X. Yana, B. Lid, B. Chene, D.P.G. Bondf, M.M. Joachimskib, P.B. Wignallg, X.L. Laia a State Key Laboratory of Biogeology and Environmental Geology, China University of Geosciences, Wuhan, 430074, China b GeoZentrum Nordbayern, Universität Erlangen-Nürnberg, Schlossgarten 5, 91054 Erlangen, Germany c Key Laboratory of Marine Geology and Environment, Institute of Oceanology, Chinese Academy of Sciences, Qingdao, 266071, China d Key Laboratory of Marine Mineral Resources, Guangzhou Marine Geological Survey, Ministry of Land and Resources, Guangzhou, 510075, China e State Key Laboratory of Palaeobiology and Stratigraphy, Nanjing Institute of Geology and Palaeontology, 39 East Beijing Road, Nanjing, 210008, R.P. China f School of Environmental Sciences, University of Hull, Hull HU6 7RX, UK g School of Earth and Environment, University of Leeds, Leeds LS2 9JT, UK *Corresponding authors Email: [email protected] (Y.D. Sun) © 2017, Elsevier. Licensed under the Creative Commons Attribution- NonCommercial-NoDerivatives 4.0 International http://creativecommons.org/ licenses/by-nc-nd/4.0/ 1 Abstract Permian strata from the Tieqiao section (Jiangnan Basin, South China) contain several distinctive conodont assemblages. Early Permian (Cisuralian) assemblages are dominated by the genera Sweetognathus, Pseudosweetognathus and Hindeodus with rare Neostreptognathodus and Gullodus. Gondolellids are absent until the end of the Kungurian stage—in contrast to many parts of the world where gondolellids and Neostreptognathodus are the dominant Kungurian conodonts. A conodont changeover is seen at Tieqiao and coincided with a rise of sea level in the late Kungurian to the early Roadian: the previously dominant sweetognathids were replaced by mesogondolellids. -
A Proposed GSSP for the Base of the Middle Ordovician Series: the Huanghuachang Section, Yichang, China
105 by Xiaofeng Wang1, Svend Stouge2, Bernd-D. Erdtmann3, Xiaohong Chen1, Zhihong Li1, Chuanshang Wang1, Qingluan Zeng1, Zhiqiang Zhou4, and Huiming Chen1 A proposed GSSP for the base of the Middle Ordovician Series: the Huanghuachang section, Yichang, China 1. Yichang Institute of Geology & Mineral Resources, Yichang, Hubei 443003, China. E-mail: [email protected] 2. Geological Museum, University of Copenhagen, Øster Voldgade 5-7, DK-1350 Copenhagen K, Denmark. E-mail: [email protected] 3. Institut für Angewandte Geowissenschaften, Technical University, Berlin, Germany. E-mail: [email protected] 4. Xi'an Institute of Geology & Mineral Resources, Xi'an, Shangxi, 710054, China. The Huanghuachang section near Yichang, southern stage), the yet-to-be-named Second stage, the Darriwilian (fourth China meets the requirements of Global Stratotype Sec- stage), and the yet-to-be-named Fifth stage— and two global series— the Lower Ordovician Series and the Upper Ordovician Series—have tion and Point (GSSP) for the base of the Middle Ordovi- thus far been formally ratified by the ICS. Among the remaining cian Series and the yet-to-be-named third stage of the series or stage, one focus is on the investigation and selection of the Ordovician System (or lower stage of Middle Ordovician GSSP for the base of the Middle Ordovician Series, which also is the Series). The conodont succession at the section is com- base of the Third stage. Two biozone levels that appear to have poten- tial for reliable correlation of the base of the Middle Ordovician plete across the Lower to Middle Ordovician series Series have been suggested by the working group of the ISOS: the boundary and several excellent phylogenetic lineages of base of Tripodus laevis conodont Biozone/Isograptus v.