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International Journal on Algae
SJR: 0.216 SNIP: 0.322 CiteScore™: 0.4

ISSN Печать: 1521-9429
ISSN Онлайн: 1940-4328

Выпуски:
Том 22, 2020 Том 21, 2019 Том 20, 2018 Том 19, 2017 Том 18, 2016 Том 17, 2015 Том 16, 2014 Том 15, 2013 Том 14, 2012 Том 13, 2011 Том 12, 2010 Том 11, 2009 Том 10, 2008 Том 9, 2007 Том 8, 2006 Том 7, 2005 Том 6, 2004 Том 5, 2003 Том 4, 2002 Том 3, 2001 Том 2, 2000 Том 1, 1999

International Journal on Algae

DOI: 10.1615/InterJAlgae.v2.i3.120
pages 114-122

Fossil coccolithophorides (Coccolithophorales) - indicators of climatic changes in Eocene paleobasins of southern regions of the CIS

A. S. Andreeva-Grigorovich
Institute of Geological Sciences, National Academy of Sciences of Ukraine, 55-b, Gonchara St., Kiev 01601, Ukraine
N. A. Savitskaya
Ukrainian State Geological Research Institute, 8, Mitskevitch Sq., 79601 Lvov, Ukraine

Краткое описание

Paleoecological analysis was carried out on fossil coccolithophorides (nannoplankton), found in Eocene deposits of the Carpathians, Crimea, Ukraine platform, Northern Caucasus, Armenia and Eastern Caspian area in the region of the south-facing slope of the Gissar Ridge (Tajikistan). Ecological groups of taxa peculiar to equatorial-tropical, subtropical and temperate biogeographical zones were differentiated. It has been found that in the Early and Middle Eocene periods warm water paleobasins of the tropical zone occurred throughout the whole investigated territory, except for the Eastern Caspian area. In the middle of the Early Eocene period the mentioned area was connected with cool waters of the Northern Atlantic. Dramatic shrinkage of tropical and subtropical zones and onset of the temperate zone is typical for Late Eocene paleobasins, except for Armenia, where warm conditions of aquatic medium stayed intact.


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