Modern and ancient sedimentation cycles by micro- and macro-scales in Taimyr-Severnaya Zemlya region and Lena river valley

¹Bolshiyanov D.Yu., ¹Yozhikov I.S., ¹Pogrebov B.S., ²Molodkov A.N., ³Krylov A.V.

MODERN AND ANCIENT SEDIMENTATION CYCLES BY MICRO- AND MACRO-SCALES IN TAIMYR-SEVERNAYA ZEMLYA REGION AND LENA RIVER VALLEY

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doi: 10.24412/2687-1092-2022-9-39-43

1 Arctic and Antarctic Research Institute, St.Petersburg, Russia

2 Research laboratory for Quaternary geochronology (“GeoAge”), Tallinn Technical University, Tallinn, Estonia

3 A.P. Karpinsky Russian Geological Research Institute, St. Petersburg, Russia

Abstract. Observation of sedimentation and denudation in drained periglacial lake during some months at Bolshevik Island of Severnaya Zemlya Archipelago, sediments studying of Khtanga Bay and Lena River Valley, which formed in Middle and Late Pleistocene reveal causes and rates of sedimentation on land and bottom of basins during fluctuations of erosion level base. Overlap and broken bedding of sediments and rocks are not rare cases of bedding and they depends on time and capacity of sedimentation and denudation processes. Found and dated shells of marine mollusks Hiatella arctica (Linnaeus, 1758) wood and amber sands give an evidence of sediments marine genesis and their Karginski age (Regional stratigraphic scale of Siberia) in Khatanga Bay.

Keywords: rates of sedimentation and denudation, disturbance of bedding, Severnaya Zemlya Archipelago, Khatanga Bay, Lena River Valley, marine mollusks, sands with amber, radiocarbon analyses, IR-OSL dating

Cite this article:

Bolshiyanov D.Yu., Yozhikov I.S., Pogrebov B.S., Molodkov A.N., Krylov A.V. 2022. Modern and ancient sedimentation cycles by micro- and macro-scales in Taimyr-Severnaya Zemlya region and Lena river valley // Relief and Quaternary deposits of the Arctic, Subarctic and North-West Russia. Issue 9. P. 39-43. doi: 10.24412/2687-1092-2022-9-39-43