AIR JANUARY PALEOTEMPERATURE RECONSTRUCTION 48-15 CALIBRATED KA BP USING OXYGEN ISOTOPE RATIOS FROM ZELYONY MYS YEDOMA
Yu.K. Vasil'chuk, A.C. Vasil'chuk
Lomonosov Moscow State University, Leninskie Gory 1, Moscow, 119991, Russia
Keywords: Ice wedge, Late Pleistocene, permafrost, yedoma, oxygen isotope, radiocarbon age, pollen and spores, hydrochemistry, Zelyony Mys exposure, Lower Kolyma River, north-eastern Yakutia
Abstract
The features of the Late Pleistocene ice wedges in the outcrop of the Zelyony Mys Yedoma located on the right bank of the Lower Kolyma River are considered. The oxygen isotope composition of ice wedges, their radiocarbon age, hydrochemical features have been studied. Stable oxygen isotopes provide the main basis for reconstructing the mean January air temperature history of a site from ice wedges. Detailed quantitative assessments of paleogeocryological and paleoclimatic changes of the region in the Late Pleistocene 48-15 cal ka BP were performed.
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