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The Caspian Region: Environmental consequences of the global climate change during the Late Pleistoceneтезисы доклада
- Авторы: Yanina T., Sorokin V., Svitoch A.
- Сборник: Book of abstracts of International Geographical Union Regional Conference “Geography, Culture and Society for Our Future Earth”, 17–21 August 2015, Moscow, Russia
- Серия: Thematic Session "Cultural Regionalism and Regional Identity"
- Тезисы
- Год издания: 2015
- Издательство: Izdatel'stvo Moskovskogo Gosudarstvennogo Universiteta im.M.V.Lomonosova/Publishing House of Moscow State University
- Местоположение издательства: Russian Federation
- Первая страница: IGU2015 – 0575
- Последняя страница: IGU2015 – 0575
- Аннотация: The event scheme of the Caspian Late Pleistocene includes Late Khazarian, Girkanian and three stages of Khvalynian transgressive epochs, separated by the regressions. Many questions of the paleogeography of these events are debatable. Our conclusions are based on materials of complex studying of numerous sections of the recent deposits of the Caspian Sea Coast and the sequences of the boreholes up to 100 m drilled in the Northern Caspian Sea. Late Khazarian and Girkanian transgressions developed during MIS 5. The maximum level of Girkanian transgression and drain of its waters across the Manych to the Black Sea basin took place in a transition period from interglacial to glacial climatic conditions. The Atelian regression was a response of the Caspian Sea to severe continental climate of the cold maximum in the Early Valdai stage (MIS 4) of the glacial epoch. The first stage of the Khvalynian transgression took place during the interstadial warming (MIS 3). The Khvalynian transgression was interrupted during the stage of the maximum cold and dryness of the LGM (MIS 2). The transgression was resumed during the epoch of the glacial degradation. The Khvalynian epoch is noted by two stages of the dumping of the Caspian waters to the Pont: in the maximum (48-50 m) and Burtass (20-22 m) phases of the transgression. The continentalization of the early Holocene led to the Mangyshlak regression of the Caspian Sea.
- Добавил в систему: Янина Тамара Алексеевна