Polygenetic features in Retisols, formed in Moscow (Late Saalian) glacial till

Kust, P.; Makeev, A.; Lessovaia, S.; Milanovsky, E.; Rusakov, A.; Abrosimov, K.; Belyaev, V.; Ryazantsev, P.

Авторы: Kust Pavel, Makeev Alexander, Lessovaia Sofia, Milanovsky Evgeniy, Rusakov Alexey, Abrosimov Konstantin, Belyaev Vladimir, Ryazantsev Pavel
Журнал: Catena
Год издания: 2022
Издательство: CATENA Verlag
Местоположение издательства: Germany
Первая страница: 1
Последняя страница: 21
Номер статьи: 106245
DOI: 10.1016/j.catena.2022.106245
Аннотация: Retisols are the most spread soil in the boreal forests of the Russian Plain. Their features are usually linked to theHolocene pedogenesis. However, Retisols formed in the bipartite sediments of Moscow age (sandy cover layer ontop of the glacial till) could have experienced pedogenic and cryogenic impact much earlier, starting from thelast Interglacial. The subdivision of relic and modern features is still incomplete. In our work, OSL datings togetherwith micromorphological studies indicate that the cover layer was formed by local rewashing of theglacial till during the deglaciation of the Moscow glacier. GPR investigation shows the mantle bedding of thecover layer and proves the stability of uplands and slopes since deposition, which confirms their exposure to longtime pedogenesis. Detailed morphology, micromorphology, microtomography, clay mineralogy and AMS datingconfirm the presence of polygenetic modern and relic features in the profile of Retisols. Within the cover layer,pedogenesis resulted in a set of embedded soil profiles that have been formed in balance with the modern environment.In the glacial till pedogenesis is mostly exhibited on the ped faces as a set of multi-layered clay andclay-humus coatings. Based on AMS dating of the inner layer of the clay infilling, it was argued that clay illuviationhad started during the last interglacial (MIS5e) and continued through the Holocene. The studied soilsshould be considered as surface paleosols (polygenetic soils) with the palimpsest type of soil memory, reflectingenvironmental evolution during the last interglacial-glacial cycle and the Holocene.
Добавил в систему: Макеев Александр Олегович

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Polygenetic features in Retisols, formed in Moscow (Late Saalian) glacial tillстатья Исследовательская статья

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