Age determination of sediment cores from the Laptev Sea ...

• Main Authors: Bauch, Henning A, Müller-Lupp, Thomas, Taldenkova, Ekaterina, Spielhagen, Robert F, Kassens, Heidemarie, Grootes, Pieter Meiert, Thiede, Jörn, Heinemeier, Jan, Petryashov, Victor
• Format: Article in Journal/Newspaper
• Language: English
• Published: PANGAEA 2001
• Subjects: Vibro corer; Vibration corer IOW; Kasten corer; Gravity corer Kiel type; Sampling gear, diverse; Transdrift-III; Transdrift-II; ARK-XIV/1b; ARK-IX/4; ARK-XI/1; QUEEN_Exped; Kapitan Dranitsyn; Professor Multanovskiy; Polarstern; Paleoenvironmental Reconstructions from Marine Sediments @ AWI AWI_Paleo; Quaternary Environment of the Eurasian North QUEEN; laptev; Laptev Sea; Siberia
• Online Access: https://dx.doi.org/10.1594/pangaea.728847; https://doi.pangaea.de/10.1594/PANGAEA.728847

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 ... : 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 ...