Enviromagnetic study of Late Quaternary environmental evolution in Lower Volga loess sequences, Russia

Költringer, C.; Stevens, T.; Almqvist, B.; Bradák, B.; Kurbanov, R.; Snowball, I.; Yarovaya, S.

Авторы: Költringer Chiara, Stevens Thomas, Almqvist Bjarne, Bradák Balázs, Kurbanov Redzhep, Snowball Ian, Yarovaya Sofia
Журнал: Quaternary Research
Номер: 101
Год издания: 2020
Издательство: Academic Press
Местоположение издательства: United States
Первая страница: 1
Последняя страница: 25
DOI: 10.1017/qua.2020.73
Аннотация: The late Quaternary development of the Lower Volga region of Russia is characterized by the alternating influence of marine and continental environments, which is the result of fluctuations of the Caspian Sea level during the last glaciation and preserved in sediment archives. However, the continental sedimentary material in the area has gained very little research attention compared to the under- and overlying marine deposits so that even its definition is still in debate. The material’s macroscopic appearance and magnetic characteristics show undeniable similarities to classic loess. By means of environmental magnetism the climate during the time of loess deposition, the Atelian regression (~20-80 ka, MIS 4-3), can be reconstructed as dry and cool, with vegetation similar to the modern-day Northern Caspian lowland. The magnetic properties recorded in the loess-paleosol sequences of the Lower Volga manifest short shifts towards more humid climate during the Late Atelian. The new findings in regard to the local Caspian climate and environmental evolution suggest decreased river discharge from the Russian Plain and Siberian Plain as dominant factor for the low Caspian Sea level stand during the Atelian.
Добавил в систему: Курбанов Реджеп Нурмурадович

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Enviromagnetic study of Late Quaternary environmental evolution in Lower Volga loess sequences, Russiaстатья

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