Organic-walled phytoplankton from Paleogene sections of Kamchatka |
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| Authors: | N I Zaporozhets V N Sinel’nikova M A Akhmet’ev |
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| Institution: | (1) Geological Institute, Russian Academy of Sciences, Pyzhevskii per. 7, Moscow, 119017, Russia |
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| Abstract: | Organic-walled phytoplankton assemblages from Eocene and Oligocene reference sections of western Kamchatka are analyzed. They are close in taxonomic composition to coeval assemblages of northern Japan and Sakhalin that is a good opportunity to correlate regional units and verify their age. The euryhaline species Trinovantedinium boreale that is associated with Paralecaniella indentata and Micrhystridium preferring shallow low-salinity waters, on the one hand, and taxa dwelling in normal-salinity open sea environments, on the other, are dominant in most assemblages, which are examined. The suggested variant of bed succession with dinocyst assemblages may be valid for Japan, Sakhalin, Kamchatka, and the Bering Sea. |
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| Keywords: | Western Kamchatka Sakhalin Japan Bering Sea organic-walled phytoplankton dinocysts regional scale by dinocysts Snatol Kovachina Rategin Amanina Galhin and Utkholok Poronai and Momijiyama formations Paleogene Paleocene Eocene Oligocene |
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