Sedimentology, organic geochemistry, and stable isotopes of core PS2138-1, supplement to: Knies, Jochen; Stein, Ruediger (1998): New aspects of organic carbon deposition and its paeoceanographic implications along the northern Barents Sea margin during the last 30,000 years. Paleoceanography, 13(4), 384-394

We studied variations in terrigenous (TOM) and marine organic matter (MOM) input in a sediment core on the northern Barents Sea margin over the last 30 ka. Using a multiproxy approach, we reconstructed processes controlling organic carbon deposition and investigated their paleoceanographic significa...

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Bibliographic Details
Main Authors: Knies, Jochen, Stein, Ruediger
Format: Article in Journal/Newspaper
Language:English
Published: PANGAEA - Data Publisher for Earth & Environmental Science 1998
Subjects:
GLAMAP
Gravity corer Kiel type
Giant box corer
ARK-VIII/2
Polarstern
Paleoenvironmental Reconstructions from Marine Sediments @ AWI AWI_Paleo
Quaternary Environment of the Eurasian North QUEEN
Silicon Cycling in the World Ocean SINOPS
Arctic
Barents Sea
Svalbard
Atlantic Arctic
Atlantic-Arctic
Ice Sheet
North Atlantic
Sea ice
Svalbard-Barents Sea Ice sheet
Online Access:https://dx.doi.org/10.1594/pangaea.728671
https://doi.pangaea.de/10.1594/PANGAEA.728671
Description
Summary:We studied variations in terrigenous (TOM) and marine organic matter (MOM) input in a sediment core on the northern Barents Sea margin over the last 30 ka. Using a multiproxy approach, we reconstructed processes controlling organic carbon deposition and investigated their paleoceanographic significance in the North Atlantic-Arctic Gateways. Variations in paleo-surface-water productivity are not documented in amount and composition of organic carbon. The highest level of MOM was deposited during 25-23 ka as a result of scavenging on fine-grained, reworked, and TOM-rich material released by the retreating Svalbard/Barents Sea ice sheet during the late Weichselian. A second peak of MOM is preserved because of sorptive protection by detrital and terrigenous organic matter, higher surface-water productivity due to permanent intrusion of Atlantic water, and high suspension load release by melting sea ice during 15.9-11.2 ka.

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