Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
6446461 | Quaternary Science Reviews | 2016 | 24 Pages |
Abstract
After the Pliocene/Pleistocene transition, local vegetation and primary production in Lake El'gygtygyn experienced a major change from relatively uniform conditions to a high-amplitude glacial-to-interglacial cyclicity that fluctuated on a dominant 41Â kyr obliquity band, but changed to a 100Â kyr eccentricity dominance during the Middle Pleistocene transition (MPT) at c. 1.2-0.6Â Ma. Periods of exceptional warming in the Pleistocene record of Lake El'gygytgyn with dense boreal forests around and peaks of primary production in the lake are assigned to so-called “super-interglacial” periods. The occurrence of these super-interglacials well corresponds to collapses of the West Antarctic Ice Sheet (WAIS) recorded in ice-free periods in the ANDRILL core, which suggests strong intrahemispheric teleconnections presumably driven by changes in the thermocline ocean circulation.
Keywords
Related Topics
Physical Sciences and Engineering
Earth and Planetary Sciences
Geology
Authors
Volker Wennrich, Andrei A. Andreev, Pavel E. Tarasov, Grigory Fedorov, Wenwei Zhao, Catalina A. Gebhardt, Carsten Meyer-Jacob, Jeffrey A. Snyder, Norbert R. Nowaczyk, Georg Schwamborn, Bernhard Chapligin, Patricia M. Anderson, Anatoly V. Lozhkin,