DOCSLIB.ORG

Lagoonal to Normal Maril1e Late Silurian Early Devonian Ostracode Assemblages of the Eurasian Arctic

Total Page：16

File Type：pdf, Size：1020Kb

Download full-text PDF Read full-text
Lagoonal to Normal Maril1e Late Silurian Early Devonian Ostracode Assemblages of the Eurasian Arctic Acta Geologica Polonica, Vol. 49 (1999), No.2, pp. 133-143 406 Lagoonal to normal maril1e Late Silurian Early Devonian ostracode assemblages of the Eurasian Arctic ANNA F. ABUSHIK & IRINA O. EVDOKIMOVA All-Russian Geological Research Institute (VSEGEI), Srednii pro 74, St. Petersburg, 199/06, Russia. E-mail: [email protected]@IB2567.spb.edu ABSTRACT: ABUSHIK, A.F. & EVDOKIMOVA, 1.0. 1999. Lagoonal to normal marine Late Silurian - Early Devonian ostracode assemblages of the Eurasian Arctic. Acta Geologica Polonica, 49 (2), 133-143. Warszawa. In the Eurasian Arctic the ostracode faunas indicate mostly normal marine environments during the Late Silurian. The Lower Devonian deposits are characterized by ostracode assemblages, which indicate the presence of marine outer shelf to lagoonal environments during the Early Devonian. The dynamics of their taxonomic diversity and some examples of the marine and lagoonal assemblages are shown. Correlation of facially mono- and heterogenous deposits is based on ostracode data. Key words: Late Silurian, Early Devonian, Ostracodes. INTRODUCTION The Upper Silurian of almost the entire Eurasian Arctic is represented by various, usually fossiliferous, limestones. These limestones yield abundant ostracode faunas, reported for the first time by the first geological expeditions to Novaya Zemlya, Vaigach and the Timan-Urals in the thir­ ties, headed by LF. PUSTOVALOV, N.A. KULIK and others. The Upper Silurian successions in this area are represented mainly by monotonous facies, cor­ related by means of ostracode associations. The palaeontological description of this fauna began with the publication of GLEBOVSKAYA (1936) and 80° 1·40000000 is continued by one of us (ABusHIK 1962, 1970, 400 800 1200 11M 1980, 1997). By contrast, the Lower Devonian successions of Fig. 1. Geographical sketch-map of the Eurasian Arctic to show the region are represented by facially heterogeneous the location of studied areas strata, with very complicated inter-relationships. I - Spitsbergen; 2 - Novaya Zemlya; 3 - Vaigach Island; The ostracodes, found in most of the facies rep­ 4 - Dolgii Island; 5 - Timan-Pechora region; 6 - Polar and North resented in the Eurasian Arctic, appeared to be Urals (Kozhim and Shchugor rivers); 7 - Severnaya Zemlya 134 ANNA F. ABUSHIK & IRINA O. EVDOKIMOVA very useful both for stratigraphical purposes and lagoonal to normal marine. In lagoons they were for environmental analysis. Unfortunately, Early usually the dominant faunal element, forming local Devonian ostracodes are still inadequately known, mono specific populations. Although less abundant, in spite of a number of papers devoted'to them they were taxonomically more diverse in marine from different parts of the Eurasian Arctic: SOLLE'S shelf environments, where they were characterized (1935) study on leperdicopes from Spitsbergen; by a more uniform distribution. Shallow-water REIN (1936) and ABUSHIK (1961) worked on the shelf successions contain practically every ostra­ same group from Novaya Zemlya and the Polar code group, with leperditicopids, primitiopsi­ Urals respectively; studies of ostracode assem­ copins, beyrichiocopids and kloedenellocopids blages of Novaya Zemlya, Taimyr and Sette­ being especially numerous. The podocopids were Daban by POLENOVA (1974), and from Timan­ less common and, in contrast, dominated the outer Pechora and the Polar Urals by ABUSHIK (1980, shelf (deeper) settings, where they were associated .1 1982). Early Devonian non-Ieperditicopes of with myodocopids. Leperditicopids contributed to Eurasian Russia are currently being studied by L.L. this fauna only in very limited numbers. SCHAMSUTDINOVA and La. EVDOKIMOVA. This paper is based on a study of collections Both Late Silurian and Early Devonian ostra­ from Spitsbergen, Novaya Zemlya, Dolgii and codes were taxonomically diverse and constituted Vaigach islands, the Timan-Pechora region, the an ecologically variable group. Some of them, e.g. western slope of the Urals and Severnaya Zemlya leperditicopids, were euryfacial, being represented (Text-fig. 1). Data from other regions of Eurasia in a wide spectrum of environments ranging from are also included. The taxonomic concepts adopted 90 10080 ....Kl ......... :::::::::: :::' ... ::: ...... ................. .!R1 "..-~~-.... ........... :::::::::::~::::~ ==~~ ~ 70 ... :::::::::::::::;";"':"'>............ ... :::. .... .... ....: ... ... :::::::::::::::~:::.~.. ======~ 60 :::::::::::::::::::::::::Pr:::::::::,A:i:~: .~. :::===:!Be====;::======:= 50 ::::::::::~:::~:.::::=====~~ 4°i •• ~~ 30~ 20i==~ 10 o Timan-Urals region Dolgii Island Novaya Zemlya Sevemaya Zemlya (Gerd'yu Reg.St.) (Zelenets Beds) (Zapadnokhatanzeya (Ust'spokoinaya Fm) Fm) Palaeocopida Leperditicopida [] (except beyrichiacean ~ and hollinacean) eJ Eridocopida Kloedenellocopida Primitiopsicopina ~ (only kloedenellacean) '" D (only primitiopsacean) Platycopida Hollinocopina ~ II (only hollinacean) [0 Metacopida Beyrichicopina ~ (only beyrichiacean) D Podocopida Fig. 2. Relative abundance of the Ludlow ostracode assemblages at order or suborder level LATE SILURIAN - EARLY DEVONIAN OSTRACODE ASSEMBLAGES 135 here follow the Treatise (1961), with the recent Bispinitia aff. pigmaea, Cryptophyllus sp., emendations of ABUSHIK (1990). Leiocyamus aff. paulus, Signetopsis aff. michailensis, S. sp., Platybolbina angustimargina­ ta, Mesomphalus ? sp., Beyrichia aff. kureikiana, LATE SILURIAN Simplicibeyrichia aff. globifera, S. aff. imperson­ aUs, Calcaribeyrichia sp., Gannibeyrichia? sp., Except for those of Spitsbergen, the Late Bingeria aff. indistincta, B. aff. infrequens, B.jlu­ Silurian deposits of the Eurasian Arctic are repre­ ida, B. microrete, Saccarchites tumefactus, sented by marine successions. Eukloedenella kureikiensis, E. clivula, E. poste­ rioalta, Invisibila sp., Cytherellina inornata, C. emaciata, Kuresaaria ? sp. and Pseudorayella Ludlow ellipsoidea, as well as some new forms (see ABUSHIK, in press). The ostracodes from the Ludlow strata of the The Ludlow ostracode assemblages are repre­ Timan-Urals region, Dolgii Island, Vaigach Island sented by endemic and provincial species of the and Novaya Zemlya are invariably represented by widespread genera of leperditicopids (Leperditia, normal marine assemblages (Text-fig. 9). Schrenckia, Kiaeria), primit~opsicopins (Leio­ In the type section of the Gerd'yu Stage cyamus, Signetopsis, Scipionis) and beyrichio­ [Regional Stage in the Timan-Ural region; equiva­ copids (Asperibeyrichia, Beyrichia, Bingeria), as lent to the Ludlow Stage elsewhere] the ostracode well as some cosmopolitan species. However, fol­ assemblage consists of Tollitina minuta, lowing the Late Ludlow regression, which is well Herrmannina hebes, Kiaeria crassa, Signetopsis recorded in the Eurasian Arctic basins (Upper bicardinata, S. eobicardinata, Leiocyamus Gerd'yu, Zelenets, Zapadnokhatanzeya formations; paulus, L. variabilis, L. enucleatus, L. clausus, Severnaya Zemlya - Ust-Spokoinaya Formation), Sulcyamus parvisulcatus, S. grandisulcatus, ostracode faunal endemism increased. The endemic Scipionis ordinarius, S.? praecox, S.? dorsocosta­ leperditicopids (Tollitina, Bispinitia), primitiopsi­ tus, Beyrichia posterior, Simplicibeyrichia parva, copins (Sylciamus) and beyrichiocopids (Dolgitia, S. aff. globifera, Asperibeyrichia simplex, Eokloedenia, and a new genus of the Hexo­ Calcaribeyrichia conjluens, Bingeria punctulata, phthalmoididae, which remains to be described) B. indistincta, B. aff. infrequens, Eokloedenia characterize this part of the succession. subbacata, Eukloedenella grandifabae, E. In general, Ludlow successions are character­ kureikiensis, E. altifabae, E. posterioalta, E. ini­ ized by wide distribution of shallow water shelf qua, Kloedenella mucronata, K. calva, K. poste­ assemblages. They are characterized by great taxo­ rioalveolata, Eoevlanella dizygopleuroides, E. nomic variability (Text-fig. 2) with leperditicopids, costata, Cavelliria dubia, Cytherellina aff. inor­ beyrichiocopids, primitiopsicopins, kloedenel­ nata, Silenis modestus and S.? acutus (see locopids, platycopids, metacopids and podocopids ABUSHIK 1997). represented in almost equal amounts. In places, A similar assemblage was reported from the monotaxonic assemblages consisting either of lep­ Gerd'yu (Ludlow) of the Polar Urals (Kozhim river erditicopids (Herrmannina, Leperditia) or beyri­ section) by TSYGANKO & CHERMNYKH 1983), as chiocopids (Hexophthalmoididae) or primitiopsi­ well as from the equivalent strata of Dolgii Island copins (Leiocyamus) prevailed. Such assemblages (ABUSHIK 1980). reflect the specific character of short-term shallow­ In Novaya Zemlya (see PI. 1) and Vaigach ing, isolation and change of salinity. The monotax­ Island, the assemblages of the Khatanzeya onic association of Herrmannian aff. nana from Formation are characterized by more diverse lep­ the Upper Klenov Formation of Novaya Zemlya is erditicopids: Leperditia quinqueangulata, L. aff. an example of such an impoverished Ludlow lumea, Herrmannina hebes, H. aff. hebes, H. aff. assemblage (PI. 3, Fig. 1). nana, Schrenckia grandis, Sch. nordenskjoeldi, Bispinitia pigmea, Kiaeria crassa, K. kiaeri, K. ele­ gans etc. (ABUSHIK 1970, NEKHOROSHEVA 1981). Pridoli In Severnaya Zemlya, the assemblage of the Ust' -Spokoinaya Formation consists of In the Greben', the Regional Stage of the Herrmannina nana, H. aff. nana, Tollitina minuta, Eurasian Arctic that corresponds to the Pridoli, the 136 ANNA F. ABUSHIK & IRINA O. EVDOKIMOVA ostracode fauna is
Load more

Recommended publications
  • National Report of the Russian Federation
    DEPARTMENT OF NAVIGATION AND OCEANOGRAPHY OF THE MINISTRY OF DEFENSE OF THE RUSSIAN FEDERATION NATIONAL REPORT OF THE RUSSIAN FEDERATION 7TH CONFERENCE OF ARCTIC REGIONAL HYDROGRAPHIC COMMISSION Greenland (Denmark), Ilulissat, 22-24 august, 2017 1. Hydrographic office In accordance with the legislation of the Russian Federation matters of nautical and hydrographic services for the purpose of aiding navigation in the water areas of the national jurisdiction except the water area of the Northern Sea Route and in the high sea are carried to competence of the Ministry of Defense of the Russian Federation. Planning, management and administration in nautical and hydrographic services for the purpose of aiding navigation in the water areas of the national jurisdiction except the water area of the Northern Sea Route and in the high sea are carried to competence of the Department of Navigation and Oceanography of the Ministry of Defense of the Russian Federation (further in the text - DNO). The DNO is authorized by the Ministry of Defense of the Russian Federation to represent the State in civil law relations arising in the field of nautical and hydrographic services for the purpose of aiding navigation. It is in charge of the Hydrographic office of the Navy – the National Hydrographic office of the Russian Federation. The main activities of the Hydrographic office of the Navy are the following: to carry out the hydrographic surveys adequate to the requirements of safe navigation in the water areas of the national jurisdiction and in the high
    [Show full text]
  • Download Full Article in PDF Format
    Silurian and Devonian strata on the Severnaya Zemlya and Sedov archipelagos (Russia) Peep MÄNNIK Institute of Geology, Tallinn Technical University, Estonia Ave 7, 10143 Tallinn (Estonia) [email protected] Vladimir V. MENNER Institute of Geology and Exploitation of Combustible Fuels (IGIRGI), Fersman Str. 50, 117312 Moscow (Russia) [email protected] [email protected] Rostislav G. MATUKHIN Siberian Research Institute of Geology, Geophysics and Mineral Resources (SNIIGiMS), Krasnyj Ave 67, 630104 Novosibirsk (Russia) [email protected] Visvaldis KURŠS Institute of Geology, University of Latvia, Raina Ave 19, LV-1050 Rīga (Latvia) [email protected] Männik P., Menner V. V., Matukhin R. G. & Kuršs V. 2002. — Silurian and Devonian strata 406 on the Severnaya Zemlya and Sedov archipelagos (Russia). Geodiversitas 24 (1) : 99-122. ABSTRACT Silurian and Devonian strata are widely distributed on the islands of the Severnaya Zemlya and Sedov archipelagos. The Silurian is represented by fossiliferous shallow-water carbonates underlain by variegated sandstones and siltstones of Ordovician age. The Devonian consists mainly of various red sandstones, siltstones and argillites, with carbonates only in some inter- KEY WORDS vals. The best sections available for study are located in the river valleys, and Silurian, in the cliffs along the coastline of islands. Type sections of most of the strati- Devonian, Sedov Archipelago, graphical units identified are located on the Matusevich River, October Severnaya Zemlya Archipelago, Revolution Island. As the Quaternary cover is poorly developed on Russia, lithostratigraphy, Severnaya Zemlya, the Palaeozoic strata can be easily traced also outside the biostratigraphy. sections. GEODIVERSITAS • 2002 • 24 (1) © Publications Scientifiques du Muséum national d’Histoire naturelle, Paris.
    [Show full text]
  • 4604. Declaration
    Page 1 4450. Declaration By a decree dated 15 January 1985, the USSR Council of Ministers approved a list of the geographical co-ordinates of the points defining the position of the baselines for measuring the breadth of the territorial sea, the exclusive economic zone and the continental shelf of the USSR off the continental coast and islands of the Arctic Ocean and the Baltic and Black seas, as given below. The same decree establishes that the waters of the White Sea south of the line connecting Cape Svyatoy Nos with Cape Kanin Nos, the waters of Cheshskaya/Bay south of the line connecting Cape Mikulkin with Cape Svyatoy/Nos (Timansky), and the waters of Baidaratskaya Bay south-east of the line connecting Cape Yuribeisalya with Cape Belushy Nos are, as waters historically belonging to the USSR, internal waters. Arctic Ocean Co-ordinates Point Geographical location North East number of point latitude longitude 1 Boundary sign No. 415 (sea buoy) 69°47'41" 30°49'15" 2 Cape Nemetsky 69°57.2' 31°56.7' 3 Islet to the east of Cape 69 57.2 31 57.2 Nemetsky 4 Cape Kekursky 69 56.7 32 03.5 5 Islet to the south-east of 69 56.4 32 05.4 Cape Kekursky 6 Islet off Cape Lognavolok 69 46.2 32 57.4 7 Islet off Cape Laush 69 44.5 33 04.8 Thence following the low-water line to point 8 8 Rybachy Peninsula, Cape 69 42.9 33 07.9 Tsypnavolok 9 Kil'din Island, north-west coast 69 22.8 34 01.8 Thence following the low-water line to point 10 10 Kil'din Island, eastern 69 20.0 34 24.2 extremity 11 Cape to the east of Cape 69 15.2 35 15.2 Teribersky 12 Cape to the
    [Show full text]
  • Early Holocene Environments on October Revolution Island, Severnaya Zemlya, Arctic Russia
    Palaeogeography, Palaeoclimatology, Palaeoecology 267 (2008) 21–30 Contents lists available at ScienceDirect Palaeogeography, Palaeoclimatology, Palaeoecology journal homepage: www.elsevier.com/locate/palaeo Early Holocene environments on October Revolution Island, Severnaya Zemlya, Arctic Russia A.A. Andreev a,⁎, D.J. Lubinski b, A.A. Bobrov c, Ó. Ingólfsson d, S.L. Forman e, P.E. Tarasov f, P. Möller g a Alfred-Wegener-Institut für Polar- und Meeresforschung, Forschungsstelle Potsdam, Telegrafenberg A43, 14473 Potsdam, Germany b Institute of Arctic and Alpine Research (INSTAAR), Campus Box 450, University of Colorado, Boulder, CO 80309-0450, USA c Soil Department of Moscow State University, Vorobievy Gory, 119899, Moscow, Russia d Department of Geology and Geography, Askja, University of Island, IS-101 Reykjavík, Iceland e Department of Earth and Environmental Sciences, University of Illinois at Chicago, 845 W. Taylor Street, Chicago, IL 60607-7059, USA f Institute for Geological Sciences/Palaeontology Free University Berlin, Malteserstrasse 74-100, 12249 Berlin, Germany g GeoBiosphere Science Centre, Department of Geology, Quaternary Sciences, Lund University, Sölvegatan 12, SE-22362 Lund, Sweden ARTICLE INFO ABSTRACT Article history: Pollen, palynomorphs, and rhizopods were studied from several b1 m thick, peaty and silty sediment Received 14 January 2008 sections on southwestern October Revolution Island, Severnaya Zemlya. Six AMS radiocarbon ages from the Received in revised form 7 April 2008 sections show that peat accumulation started at ca. 11,500 and stopped after 9500 cal. yr BP, consistent with Accepted 16 May 2008 several previously reported 14C ages. Open steppe-like vegetation existed on the island during the late Glacial, shortly before the Pleistocene/Holocene transition.
    [Show full text]
  • Devonian–Permian Sedimentary Basins and Paleogeography of the Eastern Russian Arctic: an Overview
    Tectonophysics 691 (2016) 234–255 Contents lists available at ScienceDirect Tectonophysics journal homepage: www.elsevier.com/locate/tecto Devonian–Permian sedimentary basins and paleogeography of the Eastern Russian Arctic: An overview Victoria B. Ershova a,⁎, Andrei V. Prokopiev b, Andrey K. Khudoley a a Institute of Earth Sciences, St. Petersburg State University, Universitetskaya nab. 7/9, St. Petersburg 199034, Russia b Diamond and Precious Metal Geology Institute, Siberian Branch, Russian Academy of Sciences, Lenin Pr. 39, Yakutsk 677980, Russia article info abstract Article history: The Arctic basins attract broad international interest because of the region's potentially significant undiscovered Received 13 July 2015 hydrocarbon resources. The Russian High Arctic is mostly represented by broad shelves, with a few wells drilled Received in revised form 9 March 2016 only in its western part (Kara and Barents shelves). This contribution provides an overview of the geological set- Accepted 20 March 2016 ting, stratigraphy, paleogeography, and tectono-sedimentary evolution of the middle–late Paleozoic basins of the Available online 26 March 2016 Eastern Russian Arctic, including: Severnaya Zemlya, the New Siberian Islands, northern Siberia, the Taimyr and Keywords: Chukotka peninsulas, and Wrangel Island. Reconstructing the geological evolution of the Eastern Russian – fi Arctic Arctic during the middle late Paleozoic is very dif cult because the region was overprinted by a number of Russia late Paleozoic to early Mesozoic tectonic events. Paleogeography © 2016 Elsevier B.V. All rights reserved. Paleozoic Provenance 1. Introduction we also analyze the available detrital zircon data from the Eastern Russian Arctic. The Arctic basins have attracted an increasing amount of interna- tional interest in recent years because of the potential for containing a 1.1.
    [Show full text]
  • High Arctic Odyssey
    HIGH ARCTIC ODYSSEY Remote Russian Archipelagos A Contents 1 Overview 2 Itinerary 6 Arrival and Departure Details 8 Your Ship 10 Included Activities 11 Dates & Rates 12 Inclusions & Exclusions 13 Your Expedition Team 14 Extend Your Trip 15 Meals on Board 16 Possible Excursions 19 Packing Checklist Overview High Arctic Odyssey: Remote Russian Archipelagos One of Earth’s last regions to be discovered, and the newest destination in Quark EXPEDITION IN BRIEF Expeditions’ portfolio, the High Russian Arctic is a place of mystery, beauty and Experience a true expedition as we wonder. On this stirring voyage along Russia’s ice-draped coastlines, we invite explore rarely visited Severnaya Zemlya you to become one of the first passengers to visit this little-known region and Encounter iconic Arctic wildlife, such as encounter sights rarely seen by even the most intrepid adventurers. polar bears, walrus and seabirds From the breathtaking glaciers of Novaya Zemlya and Franz Josef Land to the Explore glaciated Novaya Zemlya, where stark, secluded islands of the icy Kara Sea, the remarkable features of this isolated the earliest Arctic explorers overwintered wilderness will leave you awed and inspired. An incredible 22-day journey that Visit significant sites at Franz Josef Land will take you to far-flung landscapes unlike anything you’ve ever witnessed, and learn about the region’s fascinating history High Arctic Odyssey is exclusively designed to allow you to maximize your time exploring these pristine environments, appreciate the rich and dramatic polar Discover rarely visited islands of the icy Kara Sea history of these faraway destinations, and, especially, increase your chances of observing the region’s diverse and magnificent wildlife, such as whales, seals, muskox, walruses and polar bears.
    [Show full text]
  • Download Full Article in PDF Format
    Upper Silurian thelodonts from Severnaya Zemlya Archipelago (Russia) Valentina KARATAJŪTĒ-TALIMAA Institute of Geology of Lithuania, S˘ evc˘ enkos 13, Vilnius LR 2600 (Lithuania) [email protected] Tiiu MÄRSS Institute of Geology, Tallinn Technical University, 7 Estonia Avenue, Tallinn 10143 (Estonia) [email protected] Karatajūtē-Talimaa V. & Märss T. 2002. — Upper Silurian thelodonts from Severnaya 406 Zemlya Archipelago (Russia). Geodiversitas 24 (2) : 405-443. ABSTRACT Thelodonts have been found in the Bol’shaya, Matusevich, Obryvistaya, Pod”emnaya, Spokojnaya, Ushakov rivers and Cape October sections of October Revolution Island, and Komsomolets and Pioneer islands sections, Severnaya Zemlya Archipelago, Russia. Two new families, one new genus and six new species belonging to the orders Katoporida and Thelodontida are described from the Upper Silurian. Seven taxa are re-described. Scattered scales of Loganellia cuneata (Gross, 1947), Paralogania ex gr. martinssoni (Gross, 1967), Paralogania menneri n. sp., Valiukia flabellata n. gen., n. sp., Phlebolepis elegans Pander, 1856, Thelodus visvaldi n. sp., Thelodus matukhini n. sp., Thelodus ex gr. schmidti (Pander, 1856), Thelodus sp. indet. and Lanarkia? sp. are characteristic for the Ludlow part of the sequence (Ust-Spokojnaya Formation of October Revolution Island and its analogue on Pioneer and Komsomolets islands). Thelodus parvidens(?), Loganellia cuneata, Paralogania wilsoni n. sp., P. kachanovi n. sp., Paralogania sp. cf. ū ē KEY WORDS P. borealis (Karataj t -Talimaa, 1978), Goniporus alatus (Gross, 1947) and Thelodonti, Nikolivia elongata Karatajūtē-Talimaa, 1978 are distributed in the sections Upper Silurian, of Krasnaya Bukhta Formation on October Revolution Island and coeval Severnaya Zemlya Archipelago, scale morphology, strata of Pioneer Island (Pridoli).
    [Show full text]
  • USS Queenfish
    UNKNOWN WATERS Unknown Waters A Firsthand Account of the Historic Under- Ice Survey of the Siberian Continental Shelf by USS Queenfi sh (SSN-651) Alfred S. McLaren Captain, U.S. Navy (Ret.) With a foreword by Captain William R. Anderson, U.S. Navy (Ret.) THE UNIVERSITY OF ALABAMA PRESS Tuscaloosa Copyright © 2008 The University of Alabama Press Tuscaloosa, Alabama 35487-0380 All rights reserved Manufactured in the United States of America Typeface: AGaramond ∞ The paper on which this book is printed meets the minimum requirements of American National Standard for Information Sciences- Permanence of Paper for Printed Library Materials, ANSI Z39.48-1984. Library of Congress Cataloging- in- Publication Data McLaren, Alfred Scott. Unknown waters : a fi rsthand account of the historic under- ice survey of the Siberian continental shelf by USS Queenfi sh / Alfred S. McLaren, Captain, U.S. Navy (Ret.) ; with a foreword by Captain William R. Anderson, U.S. Navy (Ret.). p. cm. Includes bibliographical references and index. ISBN 978-0-8173-1602-0 (cloth : alk. paper) — ISBN 978-0-8173-8006-9 (electronic) 1. Queenfi sh (Submarine) 2. McLaren, Alfred Scott. 3. Arctic regions— Discovery and exploration— American. 4. Continental shelf— Arctic regions. 5. Continental shelf— Russia (Federation)—Siberia. 6. Underwater exploration— Arctic Ocean. I. Title. II. Title: Firsthand account of the historic under- ice survey of the Siberian continental shelf by USS Queenfi sh. VA65.Q44M33 2008 359.9′330973—dc22 2007032113 All chartlets were taken from the International Bathymetric Chart of the Arctic Ocean (IBCAO), Research Publication RP-2, National Geophysical Data Center, Boulder, Colorado USA 80305, 2004.
    [Show full text]
  • Silurian Cyathaspidid Heterostracans of Northern Eurasia
    Estonian Journal of Earth Sciences, 2019, 68, 3, 113–146 https://doi.org/10.3176/earth.2019.11 Silurian cyathaspidid heterostracans of Northern Eurasia Tiiu Märss Department of Geology, School of Science, Tallinn University of Technology, Ehitajate tee 5, 19086 Tallinn, Estonia; [email protected] Received 8 April 2019, accepted 18 June 2019, available online 13 August 2019 Abstract. Silurian cyathaspidid heterostracans discovered from the East Baltic, North Timan, the Central and Southern Urals, and the Novaya Zemlya and Severnaya Zemlya archipelagoes in 1970‒2006 were studied. Earlier known taxa Archegonaspis schmidti (Geinitz, 1884), Archegonaspis lindstroemi Kiaer, 1932, Archegonaspis integra (Kunth, 1872) and Tolypelepis undulata Pander, 1856 were identified and described. Archegonaspis bimaris Novitskaya, 1970 is synonymized under A. schmidti (Geinitz) and Tolypelepis mielnikensis Dec, 2015 under Tolypelepis undulata Pander, 1856. Three new taxa, Archegonaspis bashkirica sp. nov., Cyathaspis alexanderi sp. nov. and Tolypelepis bedovensis sp. nov., were established, while two taxa, Archegonaspis lindstroemi? Kiaer and Tolypelepis sp. indet., remained in open nomenclature. The new subfamily Archegonaspidinae subfam. nov. was created. It is shown that besides details of the morphology of shields and plates, sculpture characteristics can be utilized in taxonomy. The material described complements the taxonomic content as well as the spatio-temporal distribution data of the species of the family Cyathaspididae. Key words: Heterostraci, Cyathaspididae, Wenlock, Ludlow, Přidoli, Silurian, Northern Eurasia. INTRODUCTION described by Rohon (1893: Saaremaa Island, Estonia), Kiaer (1932: Gotland Island, Sweden), Novitskaya Cyathaspidid heterostracans were geographically widely (1970: Vaigach Island), Märss (1977a, 1977b: East distributed in the Silurian of North America (e.g. Baltic ‒ Estonia, Latvia, Lithuania and Kaliningrad Dineley & Loeffler 1976; Loeffler & Jones 1977; District) and Dec (2015: eastern Poland).
    [Show full text]
  • High Arctic Odyssey
    IN COLLABORAZIONE CON HIGH ARCTIC ODYSSEY Remote Russian Archipelagos A Contents 1 Overview 2 High Arctic Odyssey: Remote Russian Archipelagos 2 22-Day Itinerary 6 Arrival and Departure information 8 Your Ship Options 10 included Activities 11 Dates & Rates 12 Inclusions & Exclusions 13 Your Expedition Team 14 Extend Your Trip 15 Meals on Board 16 Possible Landing Sites 19 Packing List Overview Explore the most enigmatic and extreme regions of the Russian High Arctic with our EXPEDITION IN BRIEF epic High Arctic Odyssey: Remote Russian Archipelagos voyage. In the spirit of a true arctic Experience a true expedition as we explorer, you’ll discover breathtaking ice-draped coastlines that are rarely visited by explore rarely visited Severnaya Zemlya even the most intrepid adventurers. From the heavily glaciated Novaya Zemlya and Encounter iconic arctic wildlife, such as Franz Josef Land to the isolated islands of the icy Kara Sea, this exclusive itinerary polar bears, walrus and seabirds was designed to spend more time exploring these pristine places, increasing your Explore glaciated Novaya Zemlya, where chances of encountering unique wildlife and visiting some of our favorite far-flung the earliest Arctic explorers overwintered destinations steeped in polar history. If weather and ice conditions allow, we will Visit significant sites at Franz Josef Land explore Severnaya Zemlya, the last major territorial discovery on the planet. and learn about the region’s storied history The Arctic has been inspiring explorers for centuries, and our expeditions offer the Discover rarely visited islands of the icy chance for you to discover why. We’re excited to host you on your unforgettable Kara Sea adventure! Feel free to reach out to our team of Polar Travel Advisers or your travel professional, who can answer your questions and provide assistance at any time.
    [Show full text]
  • Glaciers in the Arctic 79
    GLACIERSIN THE ARCTIC’ Robert P. Sharp* LACIERS are an important element of the arctic and subarctic environment. They strongly influence meteorological and climatological conditions andGhave local economic significance. Glaciers are delicately responsive to subtle climatological changes, and their behaviour provides a useful means of recognizing the nature and scale of these changes depending upon the degree to which the influence of the various glaciometeorological elements is under- stood (Wallkn, 1948; Hubley, 1954; Orvig, 1954). Useful data on mean annual temperatures in remote regions can be obtained from measurement of thermal regimen in polar glaciers (Ahlmann, 1953, p. 3). Academically, study of arctic glaciers will be especially valuable if Ahlmann (1953, p. 5) is right in supposing that the great Pleistocene ice-sheets were essentially polar in behaviour and temperature regimen. Recent interest in the nature and origin of “ice islands” inthe Arctic pack(Fletcher, 1950; Koenig et ai, 1952; Crary, Cotell, and Sexton, 1952; Montgomery, 1952; Crary, 1954; Debenham, 1954) demonstrates the need for study of arctic glaciers for practical and strategic reasons. The size, nature, and distribution of arctic and subarctic glaciers are treated descriptively in this compilation, which is necessarily based largely on the writings and observations of others. Essentially nothing offered is new or original, and, in spite of references sprinkled liberally through the text, it is not possible to acknowledge every word or thought. Recent air photographs will certainly result in modifications of the material presented. This compilation was prepared in 1949 for the EncyclopediaArctica, a project of the Stefansson Library supported by the Office of Naval Research.
    [Show full text]
  • The Wild Reindeer (Rangifer Tarandus)
    Nature Conservation Research. Заповедная наука 2018. 3(3): 1–14 DOI: 10.24189/ncr.2018.040 ============== ОБЗОРНЫЕ СТАТЬИ ============== =============== REVIEW ARTICLES =============== THE WILD REINDEER (RANGIFER TARANDUS: CERVIDAE, MAMMALIA) ON THE ARCTIC ISLANDS OF RUSSIA: A REVIEW Ivan A. Mizin1, Taras P. Sipko2, Andrey V. Davydov3, Alexander R. Gruzdev4 1Russian Arctic National Park, Russia e-mail: [email protected] 2A.N. Severtsov Institute of Ecology and Evolution of RAS, Russia e-mail: [email protected] 3Information and Analysis Control Centre of Hunting Game and Their Habitats, Russia e-mail: [email protected] 4State Nature Reserve Wrangel Island, Russia e-mail: [email protected] Received: 20.02.2018 The article presents summary data on the wild reindeer’s (Rangifer tarandus) distribution on islands in the Rus- sian Arctic. It discusses the abundance, diet, and general state of knowledge about the species in remote areas, especially on Novaya Zemlya and Wrangel Island. Brief data are provided about domestic reindeer grazing on the Arctic islands. Literature data are complemented with research findings in recent years. A negative trend is demonstrated in the wild reindeer abundance; also the need for studying isolated populations is emphasised. Key words: abundance, Arctic, distribution, domestic and wild reindeer, living environment, Novaya Zemlya, nutrition peculiarities, Wrangel Island Introduction on other populations are not available, although it Currently, information about the reindeer (Ran- seems likely that the taxonomic status of the rein- gifer tarandus (Linnaeus, 1758)) on the Arctic is- deer on the Arctic islands is significantly different. lands is fragmented and scarce. The populations of Studies of reindeer inhabiting the Russian is- these reindeer are under the impact of extreme con- lands are utterly scarce, and they do not cover all ditions of high latitudes, and are not numerous.
    [Show full text]