Age determination of sediment cores from the Laptev Sea

DOI

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 (~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.

Supplement to: Bauch, Henning A; Müller-Lupp, Thomas; Taldenkova, Ekaterina; Spielhagen, Robert F; Kassens, Heidemarie; Grootes, Pieter Meiert; Thiede, Jörn; Heinemeier, Jan; Petryashov, Victor (2001): Chronology of the Holocene transgression at the north Siberian margin. Global and Planetary Change, 31(1-4), 125-140

Identifier
DOI https://doi.org/10.1594/PANGAEA.728847
Related Identifier https://doi.org/10.1016/S0921-8181(01)00116-3
Related Identifier https://doi.org/10.1016/S0921-8181(01)00117-5
Metadata Access https://ws.pangaea.de/oai/provider?verb=GetRecord&metadataPrefix=datacite4&identifier=oai:pangaea.de:doi:10.1594/PANGAEA.728847
Provenance
Creator Bauch, Henning A; Müller-Lupp, Thomas; Taldenkova, Ekaterina ORCID logo; Spielhagen, Robert F (ORCID: 0000-0001-9740-667X); Kassens, Heidemarie; Grootes, Pieter Meiert ORCID logo; Thiede, Jörn ORCID logo; Heinemeier, Jan; Petryashov, Victor
Publisher PANGAEA
Publication Year 2001
Funding Reference Fourth Framework Programme https://doi.org/10.13039/100011105 Crossref Funder ID MAS3980185 https://cordis.europa.eu/project/id/MAS3980185 Quaternary Environment of the Eurasian North
Rights Creative Commons Attribution 3.0 Unported; https://creativecommons.org/licenses/by/3.0/
OpenAccess true
Representation
Language English
Resource Type Supplementary Publication Series of Datasets; Collection
Format application/zip
Size 45 datasets
Discipline Earth System Research
Spatial Coverage (115.545W, 71.667S, 144.135E, 78.656N); Laptev Sea; Arctic Ocean
Temporal Coverage Begin 1993-09-05T00:00:00Z
Temporal Coverage End 1998-08-18T01:52:00Z