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Late Neogene marine Ostracoda from Tjörnes, Iceland

Published online by Cambridge University Press:  20 May 2016

Thomas M. Cronin
Thomas M. Cronin*
Affiliation:
U.S. Geological Survey, Reston, Virginia 22092
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Abstract

On the western side of the Tjörnes Peninsula in northern Iceland exposures of fossiliferous marine sediments, basalts, and glacial tills record the climatic history of this region of the North Atlantic Ocean. Seventy-five marine ostracode species were recovered from the Pliocene Tjörnes sediments and Quaternary sediments known as the Breidavik beds. The ostracode assemblages contain many warm-water genera that do not inhabit Iceland today and indicate early to middle Pliocene (4.5–3.0 Ma) winter and summer bottom-water temperatures that averaged 5–6°C and 14–16°C, respectively (maximum 20°C in summer, rarely below 3°C in winter except during a brief cooling 3.5–3.2 Ma). An intensified North Atlantic Drift and a diminished or absent East Greenland Current account for warm-water oceanographic conditions at 66°N. Late Pliocene marine climates were cooler with winter and summer averages of about 9°C and 8°C. Early Pleistocene ostracode assemblages dated at 1.7–1.3 Ma contain extant arctic–subarctic species that indicate winter and summer temperatures of about − 1.5°C and 4–5°C. New species Bensonocythere eirikssoni, Robertsonites williamsi, Hemicythere rekaensis, Thaerocythere mayburyae, Thaerocythere whatleyi, Leptocythere tjornesensis, Tetracytherura bardarsoni, and Cytheromorpha einarssoni are described.

Type
Research Article
Information
Journal of Paleontology , Volume 65 , Issue 5 , September 1991 , pp. 767 - 794
Copyright
Copyright © The Paleontological Society 

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References

Albertsson, K. J. 1976. K/Ar ages of Pliocene–Pleistocene glaciations in Iceland with special reference to the Tjörnes sequence, Northern Iceland. Unpubl. Ph.D. thesis, University of Cambridge, 268 p.Google Scholar
Albertsson, K. J. 1978. Um aldur jarolaga a Tjörnes. Natturufraeo-ingurinn, 48:1–8.Google Scholar
Baird, W. 1850. The natural history of British Entomostraca. Royal Society of London, 1850, 364 p.Google Scholar
Bardarson, G. G. 1925. A stratigraphical survey of the Pliocene deposits at Tjörnes, in Northern Iceland. Kongelige Danske Videnskabernes Selskab, Biologiske Meddelelser, 4(5):1–118.Google Scholar
Bate, R. H., and Robinson, E., 1978. A Stratigraphical Index of British Ostracoda. Seel House Press, Liverpool, 538 p.Google Scholar
Brady, G. S. 1868. A monograph of the British Ostracoda. Transaction Linnean Society, 26:353–495.Google Scholar
Brady, G. S. 1869. Contributions to the study of the Entomostraca. IV. Ostracoda from the River Scheldt and the Grecian Archipelago. Annals and Magazine of Natural History, Series 4, 3:45–50.Google Scholar
Brady, G. S., and Crosskey, H. W. 1871. Notes on fossil Ostracoda from the post-Tertiary deposits of Canada and New England. Geological Magazine, 8:60–65.Google Scholar
Brouwers, E. M., Jorgensen, N. O, and Cronin, T. M.In press. Climatic significance of the ostracode fauna from the Pliocene Kap Kobenhavn Formation, North Greenland. Micropaleontology.Google Scholar
Cronin, T. M. 1988a. Paleozoogeography of postglacial Ostracoda from northeastern North America, p. 125–144. In Gadd, N. R. (ed.), The Late Quaternary Development of the Champlain Sea Basin. Geological Association of Canada, Special Paper 35.Google Scholar
Cronin, T. M. 1988b. Evolution of marine climates of the U.S. Atlantic coast during the past four million years. Philosophical Transactions of the Royal Society of London, Series B, 318:661–678.Google Scholar
Cronin, T. M., and Dowsett, H. J. 1990. A quantitative micropaleontologic method for shallow marine paleoclimatology: application to Pliocene deposits of the western North Atlantic Ocean. Marine Micropaleontology, 16:117–148.Google Scholar
Cronin, T. M., and Ikeya, N. 1987. The Omma–Manganji ostracod fauna (Plio-Pleistocene) of Japan and the zoogeography of circumpolar species. Micropalaeontology, 6:65–88.Google Scholar
Dowsett, H. J., and Cronin, T. M. 1990. High eustatic sea level during the middle Pliocene: evidence from the southeastern U.S. Atlantic Coastal Plain. Geology, 18:435–438.Google Scholar
Dowsett, H. J., and Poore, R. Z.In press. Middle Pliocene paleoceanography of the North Atlantic Ocean. Quaternary Science Reviews.Google Scholar
Durham, J. W., and MacNeil, F. S. 1967. Cenozoic migrations of marine invertebrates through the Bering Strait region, p. 326–349. In Hopkins, D. M. (ed.), The Bering Land Bridge. Stanford University Press.Google Scholar
Edwards, R. A. 1944. Ostracoda from the Duplin Marl (upper Miocene) of North Carolina. Journal of Paleontology, 18:505–528.Google Scholar
Einarsson, Th., Hopkins, D. M., and Doell, R. R. 1967. The stratigraphy of Tjörnes, northern Iceland and the history of the Bering land bridge, p. 312–325. In Hopkins, D. M. (ed.), The Bering Land Bridge. Stanford University Press.Google Scholar
Einarsson, Th., and Albertsson, K. J. 1988. The glacial history of Iceland during the past three million years. Philosophical Transactions of the Royal Society of London, Series B, 318:637–644.Google Scholar
Eiriksson, J. 1980. Tjörnes, North Iceland: bibliographical review of the geological research history. Jökull, 30:1–20.CrossRefGoogle Scholar
Eiriksson, J. 1981. Lithostratigraphy of the upper Tjörnes sequence, North Iceland: the Breidavik Group. Acta Naturalia Islandica, 29:1–37.Google Scholar
Eiriksson, J. 1985. Facies analysis of the Breidavik Group sediments on Tjörnes, North Iceland. Acta Naturalia Islandica, 31:1–56.Google Scholar
Eiriksson, J., Gudmundsson, A. I., Kristjansson, L., and Gunnarsson, K. 1990. Paleomagnetism of Pliocene–Pleistocene sediments and lava flows on Tjörnes and Flatey, North Iceland. Boreas, 19:39–55.Google Scholar
Elofson, O. 1941. Zur Kenntnis der marinen Ostracoden Schwedens, mit besonderer Berücksichtigung des Skagerraks. Zoologisch Bidrag från Uppsala, 19:215–234.Google Scholar
Funder, S., Abrahamsen, N., Bennike, O., and Feyling-Hanssen, R. W. 1985. Forested Arctic: evidence from northern Greenland. Geology, 13:542–546.Google Scholar
Gladenkov, Y. B. 1978. Marine upper Cenozoic of the northern regions. Transactions, Geological Institute, USSR Academy of Sciences, no. 313, Moscow[in Russian], 194 p.Google Scholar
Gladenkov, Y. B. 1981. Marine Plio-Pleistocene of Iceland and problems of its correlation. Quaternary Research, 15:18–23.Google Scholar
Gladenkov, Y. B., Norton, P., and Spaink, G. 1980. The upper Cenozoic of Iceland. Transactions of the Geological Institute, USSR Academy of Sciences, no. 45, p. 1–114[in Russian].Google Scholar
Grossman, S. 1967. Ecology of Rhizopodea and Ostracoda of southern Pamilico Sound region, North Carolina, Part 1, living and subfossil rhizopod and ostracode populations. Kansas University Paleontological Contributions, 44, Ecology, Art. 1:1–82.Google Scholar
Hanai, T. 1957. Studies on the Ostracoda from Japan, I. Subfamily Leptocytheridae n. subfamily. Journal of the Faculty of Science, University of Tokyo, Sec. 2, 10:431–468.Google Scholar
Hanai, T. 1959. Studies on the Ostracoda from Japan. V. Family Cytherinae Dana, 1852 (emend.). Journal of the Faculty of Science, Tokyo University, Sec. 2, 11:409–418.Google Scholar
Hazel, J. E. 1967. Classification and distribution of Recent Hemicytheridae and Trachyleberidae (Ostracoda) off northeastern North America. U.S. Geological Survey Professional Paper 564:1–49.Google Scholar
Hazel, J. E. 1970. Atlantic continental shelf and slope—ostracode zoogeography in the southern Nova Scotian and northern Virginian faunal provinces. U.S. Geological Survey Professional Paper 529-E, p. 1–21.Google Scholar
Hazel, J. E. 1983. Age and correlation of the Yorktown (Pliocene) and Croatan (Pliocene and Pleistocene) Formations at the Lee Creek Mine. Smithsonian Contributions to Paleobiology, 53:81–199.Google Scholar
Hazel, J. E. 1988. Determining late Neogene and Quaternary paleoclimates and paleotemperature regimes using ostracods, p. 89–103. In DeDeckker, P., Colin, J.-P., and Peypouquet, J.-P. (eds.), Ostracoda in the Earth Sciences. Elsevier, Amsterdam.Google Scholar
Herman, Y. (ed.). 1989. The Arctic Seas: Climatology, Oceanography, Geology, and Biology. Van Nostrand Reinhold Co., New York, 888 p.Google Scholar
Hirschmann, N. 1909. Beitrag zur Kenntnis der Ostracodenfauna des Finnischen Meerbusens. Meddelser Societe Fauna Flora Fennica, 35:282–296.Google Scholar
Hopkins, D. M., Einarsson, Th., and Doell, R. R. 1965. The stratigraphy of Tjörnes, Northeastern Iceland: its significance for the history of the Bering Land Bridge. Abstracts 7th INQUA Congress:223.Google Scholar
Imbrie, J., and Kipp, N. G. 1971. A new micropaleontologic method for quantitative paleoclimatology: application to a late Pleistocene Caribbean core, p. 71–181. In Turekian, K. K. (ed.), Late Cenozoic Glacial Ages. Yale University Press, New Haven, CT.Google Scholar
Ishizaki, K. 1966. Miocene and Pliocene ostracodes from the Sendai area, Japan. Science Reports of Tohoku University, 2nd series (Geology), 37:131–163.Google Scholar
Jones, T. R. 1857. A monograph of the Tertiary Entomostraca of England. Palaeontographical Society Monograph, 68 p.Google Scholar
Jones, T. R., and Sherborn, C. D. 1889. A supplementary monograph of the Tertiary Entomostraca of England. Palaeontographical Society Monograph, 55 p.Google Scholar
Malkin, D. S. 1953. Biostratigraphic study of Miocene Ostracoda of New Jersey, Maryland, and Virginia. Journal of Paleontology, 27:761–799.Google Scholar
Maybury, C., and Whatley, R. C. 1980. The ostracod genus Leptocythere from the Pliocene deposits of St Erth and north-west France. Revista Española de Micropalaeontologia, 12:435–468.Google Scholar
Maybury, C., and Whatley, R. C. 1983. On Thaerocythere regulae Maybury and Whatley sp. nov. Stereo-Atlas of Ostracod Shells, 10(21):115–118.Google Scholar
McKenzie, K. G., Majoran, S., Emami, V., and Reyment, R. A. 1989. The Krithe problem—first test of Peypouquet's hypothesis, with a description of Krithe praetexta praetexta (Crustacea, Ostracoda). Palaeogeography, Palaeoclimatology, Palaeoecology, 74:343–354.Google Scholar
Moos, B. 1970. Die Ostracoden-fauna des unteroligozäns von Brandhorst bei Bünde (Bl. Herford-West, 3817). III. Schulerideinae Mandelstam, 1959 und Cytherideinae Sars, 1925. Geological Jahrbuch, 88:289–320.Google Scholar
Moos, B. 1971. Taxonomische Bearbeitung der Ostracodengattung Cytherura und verwandter Gattungen. Geologisches Jahrbuch, 106:53–108.Google Scholar
Mueller, G. W. 1894. Die Ostracoden des Golfes von Neapal und der angrenzenden Meeresabschnitte. Naples Stazione Zoologica Fauna und Flora Golfes Neapal, Monographie 31, 404 p.Google Scholar
Puri, H. S. 1953. The ostracode genus Hemicythere and its allies. Journal of the Washington Academy of Sciences, 43:169–179.Google Scholar
Repenning, C. A., Brouwers, E. M., Carter, L. D., Marincovich, L. Jr., and Ager, T. A. 1987. The Beringian ancestry of Phenacomys (Rodentia: Cricetidae) and the beginning of the modern Arctic Ocean borderland biota. U.S. Geological Survey Bulletin, 1687:1–31.Google Scholar
Ruggieri, G. 1952. Gli ostracodi delle sabbie grigie quaternaire Milazziano) di Imola. II. Giorn. Geologica, Series 2, 22:1–57.Google Scholar
Sars, G. O. 1865. Oversigt of Norges marine ostracoder. Forhandlinger Videnskab Selskabet, I, Christiania, 7:1–130.Google Scholar
Sars, G. O. 1925. An account ot the Crustacea of Norway. Bergen Museum, Olso, 9:1–277.Google Scholar
Schwarzbach, M. 1955. Beitrage zur Klimageschnichte Islands I. Allgemeiner Uberblick der Klimageschichte Islands. Neues Jahrbuch Geologisches und Palaeontologisches Monatsch, 3:97–130.Google Scholar
Schwarzbach, M., and Pflug, H. D. 1957. Beitrage zur Klimageschichte Islands VI. Das Lima des jungeren Tertiars in Island. Neues Jahrbuch Geologisches und Paleontologisches, 104:279–298.Google Scholar
Scott, D. B., Mudie, P. J., Baki, V., Mackinnon, K. D., and Cole, F. E. 1989. Biostratigraphy and late Cenozoic paleoceanography of the Arctic Ocean: foraminiferal, lithostratigraphic, and isotopic evidence. Geological Society of America Bulletin, 101:260–277.Google Scholar
Seguenza, G. 1880. Le formazioni terziarie nella provincia di Reggio (Calabria). Memoir Royal Acadamie Lincei, Series 3, 6 p.Google Scholar
Stephensen, K. 1938. Marine Ostracoda and Cladocera. The Zoology of Iceland, 3(32):1–19.Google Scholar
Strauch, F. 1963. Zur Geologie von Tjörnes (Nordisland). Sonderver-öffentlichungen Geologisches Institut Universitat Köln, 8:1–129.Google Scholar
Strauch, F. 1972. Zum Klima des nordatlantischskandischen Raumes im jungeren Känozoikum. Zeitschrift Deutsch Geologisches Gesellschaft, 123:163–177.Google Scholar
Sylvester-Bradley, P. C. 1948. The ostracode genus Cythereis. Journal of Paleontology, 22:792–797.Google Scholar
Swain, F. M. 1963. Pleistocene Ostracoda from the Gubik Formation, Arctic Coastal Plain, Alaska. Journal of Paleontology, 37:798–834.Google Scholar
Tabuki, R. 1986. Plio-Pleistocene Ostracoda from the Tsugaru Basin North Honshu, Japan. Bulletin of the College of Education, University of the Ryukyus, 29(2):27–120.Google Scholar
Tsukagoshi, A., and Ikeya, N. 1987. The ostracod genus Cythere O. F. Müller, 1785 and its species. Transactions and Proceedings of the Palaeontological Society of Japan, new series, 148:197–222.Google Scholar
Uffenorde, H. 1981. Ostracoden aus dem oberoligonzän und miozän des unteren Elbe-gebeites (niedersachsen und Hamburg, NW-Deutsches Tertiärbecken). Palaeontographica, Abt. A, 172:103–198.Google Scholar
Wilkinson, I. P. 1980. Coralline Crag Ostracoda and their paleoenvironmental and stratigraphical significance. Proceedings of the Geological Association, 91:291–306.Google Scholar
Yajima, M. 1988. Preliminary notes on the Japanese Miocene Ostracoda, p. 1073–1086. In Hanai, T., Ikeya, N., and Ishizaki, K. (eds.), Evolutionary Biology of Ostracoda. Proceedings of the Ninth International Symposium on Ostracoda, Kodansha Press, Tokyo, and Elsevier, Amsterdam.Google Scholar