LATE QUATERNARY COUNURITE DRIFTS ON THE KARA SEA SHELF

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Abstract
Contourite drifts were for the first time detected on the SW Kara Sea shelf basing on аnalysis of bathymetry and seismoacoustic data obtained in RV “Akademik Nikolay Strakhov” cruises 41 (2019) and 49 (2020). The drifts are confined to narrow nearly NS-striking depression with depth reaching 240 m. They are separated from underlying sediments by basal unconformity, conditioned by origination of bottom current in marine environment after Barents-Kara shield melting during Late Plestocene – Holocene. Hydrological measurements performed during Cruise 89–1 of RV “Akademik Mstislav Keldysh” (2022) shows existence of bottom current with measured velocity up to 10 cm/s.

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