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The Stability and the Abrupt Ending of the Last Interglaciation in Southeastern Siberia

Published online by Cambridge University Press:  20 January 2017

Alexander A. Prokopenko ,
Eugene B. Karabanov ,
Douglas F. Williams  and
Galina K. Khursevich
Alexander A. Prokopenko*
Affiliation:
Baikal Drilling Project, Department of Geological Sciences, University of South Carolina, Columbia, South Carolina, 29208 United Institute of Geology, Geophysics and Mineralogy, Russian Academy of Sciences, Novosibirsk, 630090, Russia
Eugene B. Karabanov
Affiliation:
Baikal Drilling Project, Department of Geological Sciences, University of South Carolina, Columbia, South Carolina, 29208 Institute of Geochemistry, Russian Academy of Sciences, Irkutsk, 664033, Russia
Douglas F. Williams
Affiliation:
Baikal Drilling Project, Department of Geological Sciences, University of South Carolina, Columbia, South Carolina, 29208
Galina K. Khursevich
Affiliation:
Institute of Geological Sciences, National Academy of Sciences of Belarus, Minsk, 220141 Baikal Drilling Project, Department of Geological Sciences, University of South Carolina, Columbia, South Carolina, 29208, USA
*
1To whom correspondence should be addressed. E-mail: sasha@geol.sc.edu.
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Abstract

Paleoproductivity records from Lake Baikal indicate that the last interglaciation in southeastern Siberia lasted ca. 12,000 yr from 127,000 to 115,000 yr B.P., was punctuated by a climatic oscillation about 120,000 yr ago, and ended abruptly with a rapid onset of regional glaciation during marine isotope substage (MIS) 5d. The Siberian equivalent of the MIS 5e–5d transition appears to lead the post-Eemian cold pulses in Europe and in the central North Atlantic by 5000 to 8000 yr. The Baikal record also registers a pronounced cold event during early MIS 5c, which correlates with the Montaigu event in pollen records from France. In Siberia, the climatic deterioration during the MIS 5d was a full-scale glacial pulse unlike the short, moderate cooling during the Montaigu event.

Keywords

Lake Baikaldiatomsbiogenic silicaEemianclimate changeSiberia
Type
Research Article
Information
Quaternary Research , Volume 58 , Issue 1 , July 2002 , pp. 56 - 59
Copyright
University of Washington

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