New data on the existence of paleopermafrost in the Yaroslavl region

Natalia, V.N.; Streletskaya, I.; Belyaev, V.

Авторы: Natalia Volkova N., Streletskaya I., Belyaev V.
Сборник: International Conference “Solving the puzzles from Cryosphere” : Program, Abstracts : Pushchino, Russia, April 15–18, 2019
Тезисы
Год издания: 2019
Место издания: Москва
Первая страница: 119
Последняя страница: 120
Аннотация: The morphological and geochemical differentiation of modern soils, the intensity and spatial distribution of erosion-accumulation processes on open slopes are influenced by relict cryogenic morphosculpture. Regularities of the distribution of cryogenic forms, their relationship with the relief, landscapes, and geological structure in the cryolithozone can serve as a basis for reconstructions in the paleocryolitic zone. In the area of lake Nero in the Yaroslavl region sections at various geomorphological levels have been explored. Traces of cryogenesis have been established, which manifest themselves in the form of residual polygonal relief, pseudomorphs of polygonal-veined ice, cryoturbations and initially soil veins. Large relic polygonal relief is clearly interpreted on satellite images, and it present a polygons with a block length of more than 80-100 m separated by elongated depressions. Inside these polygons, a second-generation system with a side of 10-30 m polygons is visible on the surface. The connection with the polygons of the second generation has drainless, often swamped depressions on the raised surfaces of large blocks, bunk ground wedges and cryoturbations with soil veins.
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New data on the existence of paleopermafrost in the Yaroslavl regionтезисы доклада

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