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The Role of Glacial and Lithodynamic Factors in the Sedimentary Cover Formation in the Velikaya Salma Strait (White Sea)

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Abstract—New data on the seafloor topography in the waters adjacent to the White Sea Biological Station of Moscow State University (Kandalaksha Bay) obtained with a multibeam echosounder (MBE) have made it possible to study the seabed relief in detail and to clarify the structure of Quaternary sediments in this area, substantially increasing the detail of the continuous seismoacoustic profiling (CSP) data obtained earlier. In the western part of the studied water area de Geer moraines have been identified for the first time in a complex of glacial deposits. These were formed during the Late Pleistocene glacial retreat in an eastern direction toward the recent deepwater part of the White Sea. In the deepwater area, according to the MBE and CSP data, the genesis of studied sediments occurred due to intensive gravitational processes at the end of the Late Pleistocene–Holocene. These new data may be indicative of “dead” ice in the White Sea Depression.

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Correspondence to A. V. Starovoytov.

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Translated by E. Maslennikova

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Starovoytov, A.V., Tokarev, M.Y., Zamotina, Z.S. et al. The Role of Glacial and Lithodynamic Factors in the Sedimentary Cover Formation in the Velikaya Salma Strait (White Sea). Moscow Univ. Geol. Bull. 77, 220–228 (2022). https://doi.org/10.3103/S0145875222020090

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  • DOI: https://doi.org/10.3103/S0145875222020090

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