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Palaeoenvironmental interpretation of yedoma silt (ice complex) deposition as cold-climate loess, Duvanny Yar, northeast Siberia
journal contribution
posted on 2023-06-09, 05:06 authored by Julian MurtonJulian Murton, Tomasz Goslar, Mary E Edwards, Mark D Bateman, Petr P Danilov, Grigoriy N Savvinov, Stanislav V Gubin, Bassam Ghaleb, James Haile, Mikhail Kanivskiy, Anatoly V Lozhkin, Alexei V Lupachev, Della K Murton, Yuri Shur, Alexei Tikhonov, Alla C Vasil'chuk, Yurij K Vasil'chuk, Stephen A WolfeUncertainty about the geological processes that deposited syngenetically frozen ice-rich silt (yedoma) across hundreds of thousands of square kilometres in central and northern Siberia fundamentally limits our understanding of the Pleistocene geology and palaeoecology of western Beringia, the sedimentary processes that led to sequestration of hundreds of Pg of carbon within permafrost and whether yedoma provides a globally significant record of ice-age atmospheric conditions or just regional floodplain activity. Here, we test the hypotheses of aeolian versus waterlain deposition of yedoma silt, elucidate the palaeoenvironmental conditions during deposition and develop a conceptual model of silt deposition to clarify understanding of yedoma formation in northern circumpolar regions during the Late Pleistocene. This is based on a field study in 2009 of the Russian stratotype of the ‘Yedoma Suite’, at Duvanny Yar, in the lower Kolyma River, northern Yakutia, supplemented by observations that we have collected there and at other sites in the Kolyma Lowland since the 1970s. We reconstruct a cold-climate loess region in northern Siberia that forms part of a vast Late Pleistocene permafrost zone extending from northwest Europe across northern Asia to northwest North America, and that was characterised by intense aeolian activity.
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Publication status
- Published
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- Published version
Journal
Permafrost and Periglacial ProcessesISSN
1045-6740Publisher
WileyExternal DOI
Issue
3Volume
26Page range
208-288Department affiliated with
- Geography Publications
Full text available
- No
Peer reviewed?
- Yes
Legacy Posted Date
2017-02-09First Compliant Deposit (FCD) Date
2021-03-04Usage metrics
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