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PALEOCRYOGENIC STRUCTURES OF THE LATE PLEISTOCENE IN THE SEVERNAYA DVINA RIVER VALLEY
- Authors: Shukhvostov R.S1,2, Zaretskaya N.E1, Baranov D.V1, Zakharov A.L1
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Affiliations:
- Institute of Geography of the Russian Academy of Sciences
- Lomonosov Moscow State University
- Issue: Vol 525, No 2 (2025)
- Pages: 314-321
- Section: PALEOGEOGRAPHY
- Submitted: 23.01.2026
- Published: 15.12.2025
- URL: https://ogarev-online.ru/2686-7397/article/view/374064
- DOI: https://doi.org/10.7868/S3034506525120145
- ID: 374064
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Abstract
The first results of a detailed paleocryolithological study (Permogorie section case study) in the upper reaches of the Severnaya Dvina River show that existing paleoenvironment enabled the development of thermal contraction cracking in Northeastern Europe at the end of the Bolling-Allerod interstadial (ca. 13.3–12.7 cal. kyr BP). Freezing occurred in two stages – syncryogenic with the formation of ice-wedges and epicryogenic with the formation of composite ice-wedges. The relic layer of seasonal thawing could reach a thickness of 1.0–1.5 meters. The data obtained confirm the formation of permafrost in the Late Glacial period, but do not yet allow us to judge the continuous or discontinuous of permafrost in the northeast of the East European Plain at the Pleistocene–Holocene boundary.
About the authors
R. S Shukhvostov
Institute of Geography of the Russian Academy of Sciences; Lomonosov Moscow State University
Email: r.shux18@gmail.com
Moscow, Russia; Moscow, Russia
N. E Zaretskaya
Institute of Geography of the Russian Academy of SciencesMoscow, Russia
D. V Baranov
Institute of Geography of the Russian Academy of SciencesMoscow, Russia
A. L Zakharov
Institute of Geography of the Russian Academy of SciencesMoscow, Russia
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