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MIDDLE HOLOCENE GLACIER ACTIVITY IN THE RUSSIAN ALTAI: EVIDENCE FROM RADIOCARBON AND PALEOTREE DATA IN THE AKKOL VALLEY

Published online by Cambridge University Press:  07 November 2022

R K Nepop
Affiliation:
Institute of Geology and Mineralogy SB RAS, Koptyuga av., 3, 630090 Novosibirsk, Russia Ural Federal University, Mira str., 19, 620002 Yekaterinburg, Russia
A R Agatova*
Affiliation:
Institute of Geology and Mineralogy SB RAS, Koptyuga av., 3, 630090 Novosibirsk, Russia Ural Federal University, Mira str., 19, 620002 Yekaterinburg, Russia
A N Nazarov
Affiliation:
Siberian Federal University, Svobodny av., 79, 660041 Krasnoyarsk, Russia
V S Myglan
Affiliation:
Siberian Federal University, Svobodny av., 79, 660041 Krasnoyarsk, Russia
P Moska
Affiliation:
Institute of Physics, Silesian University of Technology, Gliwice, Poland
*
*Corresponding author. Email: agatr@mail.ru

Abstract

The available paleosol and paleowood data from the head of the Akkol trough valley, South Chuya range, indicates a climatically driven glacier dynamic in the Russian Altai. Radiocarbon dating of paleosols and paleotree fragments help determine the beginning of the Neoglacial in this high mountain region in the middle of the Holocene. New data limit the advance of the Sofiysky glacier at that time by the front of the Historical moraine. Less so than during the Historical stage (2.3–1.7 cal kBP), glacial activity 5–4 cal kBP is also supported by rapid reforestation. The Akkem moraine in trough valleys of the Russian Altai accumulated prior to the Holocene. The limitations and difficulties of radiocarbon dating of paleosols should be considered when interpreting the dating results.

Information

Type
Conference Paper
Copyright
© The Author(s), 2022. Published by Cambridge University Press for the Arizona Board of Regents on behalf of the University of Arizona

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