LATE PLIOCENE–QUATERNARY (<2.7 MA) SEDIMENTATION IN THE EURASIAN BASIN (ARCTIC OCEAN)
- Authors: Zayonchek A.V.1,2, Sokolov S.Y.1, Soloviev A.V.1,2
-
Affiliations:
- Geological Institute of Russian Academy of Sciences (GIN RAS)
- All-Russian Research Geological Oil Institute
- Issue: No 5 (2025)
- Pages: 474-493
- Section: Articles
- URL: https://journal-vniispk.ru/0024-497X/article/view/323762
- DOI: https://doi.org/10.31857/S0024497X25050029
- EDN: https://elibrary.ru/vnhpvo
- ID: 323762
Cite item
Abstract
Geomorphological analysis and age reference of the late Pliocene-Quaternary horizons identified in the ARC1407A seismic section in the Nansen Basin by onlapping the oceanic basement, the age of which was specified based on the results of calculating the position of theoretical linear magnetic anomalies, were carried out. Interpretation of the ARC1407A seismic time section allows the possibility of using the seismostratigraphic reference scheme of glaciomarine deposits previously developed for the western Barents Sea and the northeastern part of the adjacent deep-water basin. As a result of the geomorphological analysis, systems of extended canyons were identified in the Nansen Basin and in the eastern part of the Amundsen Basin. Significant amounts of sedimentary cover in the Nansen basin are glacio-marine deposits formed since the end of the Late Pliocene. In the central part of the Nansen basin, glacio-marine sediments were deposited simultaneously from two closely located troughs – St. Anna and Voronin. Glacio-marine sediments were transported to the central part of the Nansen basin cyclically, and have a mixed character – underwater landslides and turbidite flows. In the Amundsen and Podvodnikov basins, the accumaulation of glacio-marine deposits could begin in the second half of the Middle Pleistocene.
About the authors
A. V. Zayonchek
Geological Institute of Russian Academy of Sciences (GIN RAS); All-Russian Research Geological Oil Institute
Author for correspondence.
Email: a_zayonchek@mail.ru
Pyzhevsky lane, 7, bld. 1, Moscow, 119017 Russia; Shosse Entuziastov, 36, Moscow, 105118 Russia
S. Y. Sokolov
Geological Institute of Russian Academy of Sciences (GIN RAS)
Email: sysokolov@yandex.ru
Pyzhevsky lane, 7, bld. 1, Moscow, 119017 Russia
A. V. Soloviev
Geological Institute of Russian Academy of Sciences (GIN RAS); All-Russian Research Geological Oil Institute
Email: sysokolov@yandex.ru
Pyzhevsky lane, 7, bld. 1, Moscow, 119017 Russia; Shosse Entuziastov, 36, Moscow, 105118 Russia
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