Glacier Dynamics in the Southern Part of East Siberia (Russia) from the Final Part of the LGM to the Present Based on from Biogeochemical Proxies from Bottom Sediments of Proglacial Lakes Full article
| Journal |
Quaternary International
ISSN: 1040-6182 |
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| Output data | Year: 2019, Volume: 524, Number: SI, Pages: 4-12 Pages count : 9 DOI: 10.1016/j.quaint.2019.03.003 | ||||||||||
| Tags | Glaciers; Proglacial lakes; Bottom sediments; East Siberia; East Sayan Ridge; Baikalsky Ridge; Barguzinsky Ridge; Kodar Ridge | ||||||||||
| Authors |
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| Affiliations |
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Funding (2)
| 1 | Russian Foundation for Basic Research | 17-29-05016 |
| 2 | Federal Agency for Scientific Organizations | 0345-2016-0006 (АААА-А16-116122110063-0) |
Abstract:
In the present study, we have reconstructed glacier dynamics based on the high (1–0.5 mm) resolution X-ray fluorescence spectrometry scanning, the Fourier-transform infrared technique and 14C-dating used in the analyses of the lake bottom sediments, fluvioglacial deposits and a peat bog situated on East Siberian Mountains (East Sayan, Baikal, Barguzin and Kodar Ridges) between 51.723°N, 100.601°E and 56.885°N, 117.580°E. We have found what the largest glacier deposits on the Baikal shoreline, so-called Tompuda end moraine, formed in two stages. The first stage occurred until ca. 12 cal ka BP; then, there was a short pause. The second stage ended by 9.5 cal ka BP. Azarova glacier (Kodar Ridge) retreated upwards the Kodar Ridge by ca. 11 cal ka BP. It may indicate that the Bølling-Allerød warming was very evident, and it was a trigger for these deglacial events in East Siberia. It is most likely that “remains” of the Late Pleistocene glaciers were cardinally shrunk or fully disappeared during the Holocene Thermal Optimum in the southern part of East Siberia. Climate conditions were suitable for glacier formation after 3 cal ka BP. However, if there were new glaciers in the Middle Holocene, their sizes were likely to be less than 1 km2. For this reason, these glaciers should have completely melted during the Roman and Medieval Warm Periods. It is most likely, small glaciers observed at present in the south of East Siberia were mainly formed during the Little Ice Age.
Cite:
Stepanova O.G.
, Trunova V.A.
, Osipov E.Y.
, Kononov E.E.
, Vorobyeva S.S.
, Parkhomchuk E.V.
, Kalinkin P.N.
, Vorobyeva E.E.
, Vershinin K.E.
, Rastigeev S.A.
, Fedotov A.P.
Glacier Dynamics in the Southern Part of East Siberia (Russia) from the Final Part of the LGM to the Present Based on from Biogeochemical Proxies from Bottom Sediments of Proglacial Lakes
Quaternary International. 2019. V.524. NSI. P.4-12. DOI: 10.1016/j.quaint.2019.03.003 WOS Scopus РИНЦ OpenAlex
Glacier Dynamics in the Southern Part of East Siberia (Russia) from the Final Part of the LGM to the Present Based on from Biogeochemical Proxies from Bottom Sediments of Proglacial Lakes
Quaternary International. 2019. V.524. NSI. P.4-12. DOI: 10.1016/j.quaint.2019.03.003 WOS Scopus РИНЦ OpenAlex
Dates:
| Submitted: | Dec 13, 2018 |
| Accepted: | Mar 2, 2019 |
| Published online: | Mar 8, 2019 |
| Published print: | Jul 30, 2019 |
Identifiers:
| Web of science: | WOS:000487671100002 |
| Scopus: | 2-s2.0-85062642517 |
| Elibrary: | 38705631 |
| OpenAlex: | W2921422127 |