DATING OF DEEP-WATER SEDIMENTS OF LAKE BAIKAL FROM THE RATIOS OF THORIUM AND URANIUM ISOTOPES IN VARIOUS FRACTIONS OF THEIR AUTHIGENIC PART
I. V. Sandimirov, A. A. Kosov, and T. A. Vladimirova
Keywords: Pleistocene, paleoclimate, glaciations, Th-U dates, Lake Baikal
Pages: 194-205
Abstract
We propose a method for dating Baikal deep-water sediments from the ratios of radioactive isotopes of Th and U in various fractions of the authigenic part of the sediments. We have determined the Th-U age of six horizons of the borehole BDP-96-2 and the average parameters of gravitational consolidation of the sediments. The extrapolated Th-U ages show a good correlation with paleomagnetic data throughout the core of BDP-96-2.
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