Earth’s Cryosphere, 2024, Vol. XXVIII, No. 3, p. 3-16.
REGIONAL AND HISTORICAL GEOCRYOLOGY
FORMATION OF THE HOLLOW-RIDGE TOPOGRAPHY ON THE PUR–TAZ INTERFLUVE IN THE LATE PLEISTOCENE AND HOLOCENE
О.L. Оpokina1,2,*, Е.А. Slagoda1,2, V.I. Ivanov1, А.V. Khomutov1, A.O. Kuznetsova1, М.М. Danko1, Е.S. Koroleva3, G.V. Simonova4
1 Institute of Earth Cryosphere, Malygina St. 8, Tyumen, 625026 Russia
2 Tyumen Industrial University, Volodarskogo St. 38, Tyumen, 625000 Russia
3 Arctic Research Center of the Yamal-Nenets Autonomous Okrug, Respubliki St. 20, Salekhard, 629008 Russia
4 Institute of Monitoring of Climatic and Ecological Systems, Akademicheskii prosp. 10/3, Tomsk, 634055 Russia
*Corresponding author; e-mail: opokina@ikz.ru
The structure of the upper part of permafrost and the topographic features in the northeast of Western Siberia were shaped by changes in the natural environment in the Late Pleistocene and Holocene. In 2016–2021, sections of different landforms – ridges and thermokarst-erosional hollows – were studied within the third la-custrinealluvial plain of the Pur–Taz interfluve. The upper part of the plain includes the Kargin–Sartan allu-vial, lacustrine, and slope sediments and Holocene peatlands. Based on the stratigraphy and new geochrono-logical data on the Pur–Taz interfluve, the consequences of the activation of neotectonic processes in the Sartan period and the influence of climatic factors on the differentiation of accumulative and denudation processes in the Holocene were identified.
Keywords: cryogenic structure, genesis of sediment, peatlands, radiocarbon dating, relief, neotectonics.
Recommended citation: Opokina O.L., Slagoda E.A., Ivanov V.I., Khomutov A.V., Kuznetsova A.O., Danko M.M., Koroleva E.S., Simonova G.V., 2024. Formation of the hollow-ridge topography on the Pur–Taz interfluve in the Late Pleistocene and Holocene. Earth’s Cryosphere XXVIII (3), 3–16.
Received August 30, 2023
Revised March 7, 2024
Accepted April 6, 2024
Translated by V.A. Krutikova