The ‘Severny Polus-41’ (‘North Pole-41’) expedition: marine geology onboard

Popova Е.A.^1,2, Bogin V.A.^1,2, Malyshev S.A.^1,2, Ovanesyan G.I.^1,2, Filchuk К.V.², Makarov А.S.²

THE ‘SEVERNY POLUS-41’ (‘NORTH POLE-41’) EXPEDITION: MARINE GEOLOGY ONBOARD

Relief and Quaternary deposits of the Arctic, Subarctic and North-West Russia. Issue 10.

doi: 10.24412/2687-1092-2023-10-210-216

¹VNIIOkeangeologia, St. Petersburg, Russia

²Arctic and Antarctic Research Institute, St. Petersburg, Russia

Abstract. The information about geological work onboard the ice-drifting platform ‘Severny Polus’ during ‘Severny Polus-41’ (‘North Pole-41’) expedition is presented. The work has started in October 2022 and still continues in November 2023. The material has been gathered in Lomonosov Ridge, Amundsen basin, Gakkel Ridge, Nansen Basin using a gravity corer, a giant box corer, and dredges. Lithological composition of all cores has been studied, the sediments consist of silty clay and clayey silt, sometimes with sand, and sandy layers are present as well. Material composition studies have showed domination of terrigenous material, yet carbonate shells were met. Correlation of the cores with the previously dated ones based on lithological characteristics has demonstrated that the material had been deposited no later than MIS 6. Large rock debris were considered to be ice-rafted.

Keywords: marine sediments, lithology, IRD, the Arctic Ocean, Central Arctic, Lomonosov Ridge, Amundsen Basin

REFERENCES:

Krylov A.A., Gusev E.A., Mirolubova E.S., Chernykh A.A. Geological and paleooceanological significance of psephite from the cretaceous-cenozoic deposits from the near-pole part of the Lomonosove ridge // Arctic and Antarctic Research. 2018. N. 64(2). P. 182-199. (In Russ.) doi:10.30758/0555-2648-2018-64-2-182-199

Krylov A.A., Malyshev S.A., Bogin V.A., Zakharov V.Yu., Gusev E.A., Makarov A.S. Features of the coarse clasts (psephites) distribution in the Upper Quaternary sediments of the northern Barents Sea // Arctic and Antarctic Research. 2020. N. 66(3). P. 381-395. (In Russ.) doi:10.30758/0555-2648-2020-66-3-381-395

Abrams M.A. Significance of hydrocarbon seepage relative to petroleum generation and entrapment // Marine and Petroleum Geology. 2005. Vol. 22. Is. 4. P. 457-477. doi: 10.1016/j.marpetgeo.2004.08.003

Fuetterer D.K. (Ed.). ARCTIC’91: The expedition ARK-VIII/3 of RV ‘‘Polarstern’’ in 1991 // Berichte zur Polar- und Meeresforschung. 1992. Vol. 107, 267 p.

Mueller C. Rekonstruktion der Palaeo-Umweltbedingungen am Laptev-See-Kontinentalrand waehrend der beiden letzten Glazial-/Interglazial-Zyklen anhand sedimentologischer und mineralogischer Untersuchungen // Berichte zur Polar- und Meeresforschung. 1999. Vol. 328. 146 p.

Phillips R.L., Grantz A. Regional variations in provenance and abundance of ice-rafted clasts in Arctic Ocean sediments: implications for the configuration of late Quaternary oceanic and atmospheric circulation in the Arctic // Marine Geology. 2001. Vol. 172. Is. 1-2. P. 91–115. doi: 10.1016/S0025-3227(00)00101-8

Stein R. (Ed). The Expedition PS87 of the Research Vessel Polarstern to the Arctic Ocean in 2014 // Berichte zur Polar- und Meeresforschung. 2015. Vol. 688. 273 p.

Stein R. Arctic Ocean Sediments: Processes, Proxies, and Paleoenvironment. Oxford, Elsevier, 2008. 602 p.

Cite this article:

Popova Е.A., Bogin V.A., Malyshev S.A., Ovanesyan G.I., Filchuk К.V., Makarov А.S. The ‘Severny Polus-41’ (‘North Pole-41’) expedition: marine geology onboard // Relief and Quaternary deposits of the Arctic, Subarctic and North-West Russia. 2023. Issue 10. P. 210-216. doi: 10.24412/2687-1092-2023-10-210-216