Chronology of the Holocene transgression at the North Siberian margin.

Bauch, Henning A., Mueller-Lupp, Thomas, Taldenkova, Ekaterina, Spielhagen, Robert F., Kassens, Heidemarie, Grootes, Peter M., Thiede, Jörn , Heinemeier, J. and Petryashov, V. V. (2001) Chronology of the Holocene transgression at the North Siberian margin. Global and Planetary Change, 31 (1-4). pp. 125-139. DOI 10.1016/S0921-8181(01)00116-3.

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Abstract

To establish a chronology of the Holocene transgression in Arctic Siberia, a total of 14 sediment cores from the Laptev Sea continental slope and shelf were studied covering the water depth range between 983 and 21 m. The age models of the cores were derived from 119 radiocarbon datings, which were all analyzed on marine biogenic calcite (mainly bivalve shells). The oldest shell sample was found at the slope and dates back to about 15.3 cal. ka, indicating that the time interval investigated starts prior to the onset of the meltwater pulse 1A (similar to 14.2 cal. ka) when global sea-level rose dramatically. The inundation history was reconstructed mainly on the basis of major changes in average sedimentation rates (ASR), but also other sedimentological parameters were incorporated. A diachronous reduction in ASR from the outer to the inner shelf region is recognized, which was related to the southward migration of the coastline as the primary sediment source. We estimate that the flooding of the 50-, 43-, and 31-m isobaths was completed by approximately 11.1, 9.8, and 8.9 cal. ka, and that Holocene sea-level highstand was approached near 5 cal. ka. Between these time intervals, sea level in the Laptev Sea rose by 5.4, 13.3, and 7.9 mm/year, respectively.

Document Type: Article
Additional Information: WOS:000173265800008
Keywords: Arctic Siberia; Holocene sea level; Land-ocean interaction; Shelf sedimentation; Sea-level record; Weichselian ice-sheet; Organic carbon; Arctic Ocean; Barents Sea; Postglacial emergence; Kara Seas; Quaternary; Russia; Radiocarbon
Research affiliation: AWI
OceanRep > GEOMAR > FB1 Ocean Circulation and Climate Dynamics > FB1-P-OZ Paleo-Oceanography
Kiel University
Refereed: Yes
Open Access Journal?: No
DOI etc.: 10.1016/S0921-8181(01)00116-3
ISSN: 0921-8181
Date Deposited: 14 Jan 2015 10:04
Last Modified: 12 Oct 2017 11:34
URI: http://oceanrep.geomar.de/id/eprint/26938

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