Research output: Contribution to journal › Article › peer-review
A multiproxy record of sedimentation, pedogenesis, and environmental history in the north of West Siberia during the late Pleistocene based on the Belaya Gora section. / Sheinkman, Vladimir; Sedov, Sergey; Shumilovskikh, Lyudmila S.; Bezrukova, Elena; Dobrynin, Dmitriy; Timireva, Svetlana; Rusakov, Alexey; Maksimov, Fedor.
In: Quaternary Research (United States), Vol. 99, 0033589420000745, 09.10.2020, p. 204-222.Research output: Contribution to journal › Article › peer-review
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TY - JOUR
T1 - A multiproxy record of sedimentation, pedogenesis, and environmental history in the north of West Siberia during the late Pleistocene based on the Belaya Gora section
AU - Sheinkman, Vladimir
AU - Sedov, Sergey
AU - Shumilovskikh, Lyudmila S.
AU - Bezrukova, Elena
AU - Dobrynin, Dmitriy
AU - Timireva, Svetlana
AU - Rusakov, Alexey
AU - Maksimov, Fedor
N1 - Publisher Copyright: Copyright © University of Washington. Published by Cambridge University Press, 2020. Copyright: Copyright 2021 Elsevier B.V., All rights reserved.
PY - 2020/10/9
Y1 - 2020/10/9
N2 - Recent revision of the Pleistocene glaciation boundaries in northern Eurasia has encouraged the search for nonglacial geological records of the environmental history of northern West Siberia. We studied an alluvial paleosol-sedimentary sequence of the high terrace of the Vakh River (middle Ob basin) to extract the indicators of environmental change since Marine Oxygen Isotope Stage (MIS) 6. Two levels of the buried paleosols are attributed to MIS 5 and MIS 3, as evidenced by U/Th and radiocarbon dates. Palynological and pedogenetic characteristics of the lower pedocomplex recorded the climate fluctuations during MIS 5, from the Picea-Larix taiga environment during MIS 5e to the establishment of the tundra-steppe environment due to the cooling of MIS 5d or MIS 5b and partial recovery of boreal forests with Picea and Pinus in MIS 5c or MIS 5a. The upper paleosol level shows signs of cryogenic hydromorphic pedogenesis corresponding to the tundra landscape, with permafrost during MIS 3. Boulders incorporated in a laminated alluvial deposit between the paleosols are dropstones brought from the Enisei valley by ice rafting during the cold MIS 4. An abundance of eolian morphostructures on quartz grains from the sediments that overly the upper paleosol suggests a cold, dry, and windy environment during the MIS 2 cryochron.
AB - Recent revision of the Pleistocene glaciation boundaries in northern Eurasia has encouraged the search for nonglacial geological records of the environmental history of northern West Siberia. We studied an alluvial paleosol-sedimentary sequence of the high terrace of the Vakh River (middle Ob basin) to extract the indicators of environmental change since Marine Oxygen Isotope Stage (MIS) 6. Two levels of the buried paleosols are attributed to MIS 5 and MIS 3, as evidenced by U/Th and radiocarbon dates. Palynological and pedogenetic characteristics of the lower pedocomplex recorded the climate fluctuations during MIS 5, from the Picea-Larix taiga environment during MIS 5e to the establishment of the tundra-steppe environment due to the cooling of MIS 5d or MIS 5b and partial recovery of boreal forests with Picea and Pinus in MIS 5c or MIS 5a. The upper paleosol level shows signs of cryogenic hydromorphic pedogenesis corresponding to the tundra landscape, with permafrost during MIS 3. Boulders incorporated in a laminated alluvial deposit between the paleosols are dropstones brought from the Enisei valley by ice rafting during the cold MIS 4. An abundance of eolian morphostructures on quartz grains from the sediments that overly the upper paleosol suggests a cold, dry, and windy environment during the MIS 2 cryochron.
KW - Alluvial sediments
KW - Drop stones
KW - Environmental change
KW - Marine Isotope Stage 5-2
KW - Paleosols
KW - Pleistocene
KW - Pollen
KW - West Siberia
UR - http://www.scopus.com/inward/record.url?scp=85099753721&partnerID=8YFLogxK
U2 - 10.1017/qua.2020.74
DO - 10.1017/qua.2020.74
M3 - Article
AN - SCOPUS:85099753721
VL - 99
SP - 204
EP - 222
JO - Quaternary Research
JF - Quaternary Research
SN - 0033-5894
M1 - 0033589420000745
ER -
ID: 76547081