INTERMEDIATE LAKES OF THE CHULYM AND KARGAT RIVER VALLEYS AND THEIR ROLE IN THE EVOLUTION OF THE BASIN OF LAKE CHANY
S.K. Krivonogov1,2, V.A. Gusev2,1, E.V. Parkhomchuk3,2, S.V. Zhilich1,4
1V.S. Sobolev Institute of Geology and Mineralogy, Siberian Branch of the Russian Academy of Sciences, pr. Akademika Koptyuga 3, Novosibirsk, 630090, Russia
2Novosibirsk State University, ul. Pirogova 2, Novosibirsk, 630090, Russia
3G.K. Boreskov Institute of Catalysis, Siberian Branch of the Russian Academy of Sciences, pr. Akademika Lavrent’eva 5, Novosibirsk, 630090, Russia
4Institute of Archeology and Ethnography, Siberian Branch of the Russian Academy of Sciences, pr. Akademika Lavrent’eva 17, Novosibirsk, 630090, Russia
Keywords: Палеолимнология, палеогидрология, озера, голоцен, Западная Сибирь, бассейн оз. Чаны, Paleolimnology, paleohydrology, lakes, Holocene, West Siberia, basin of Lake Chany
Abstract
The Chulym and Kargat rivers flow through chains of saucer-shaped depressions, which are swamp meadows or drainage lakes. In the past, all of them were lakes short-lived in different Holocene epochs. These depressions accumulated a significant amount of the Chulym and Kargat runoff and thus influenced the water balance of Lake Chany. Our studies reconstruct the history of these depressions. A model describing their filling with sediments is proposed. The lacustrine sediments penetrated by boreholes and pits are dated by the radiocarbon method at 6.3-2.0 ka BP. The data obtained indicate the long existence of Lake Chany as a shallow water basin and rise in its level at ~2 kyr BP.
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