Organic carbon and biomarker record from the Laptev Sea continental margin ...

In order to understand the processes controlling organic carbon deposition (i.e., primary productivity vs. terrigenous supply) and their paleoceanographic significance, three sediment cores (PS2471, PS2474. and PS2476) from the Laptev Sea continental margin were investigated for their content and co...

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Bibliographic Details
Main Authors: Stein, Ruediger, Fahl, Kirsten, Niessen, Frank, Siebold, Martina
Format: Article in Journal/Newspaper
Language:English
Published: PANGAEA 1999
Subjects:
Kasten corer
Giant piston corer
Gravity corer Kiel type
Giant box corer
ARK-VIII/3
ARK-IX/4
Polarstern
Paleoenvironmental Reconstructions from Marine Sediments @ AWI AWI_Paleo
Quaternary Environment of the Eurasian North QUEEN
laptev
Laptev Sea
Online Access:https://dx.doi.org/10.1594/pangaea.733566
https://doi.pangaea.de/10.1594/PANGAEA.733566
Description
Summary:In order to understand the processes controlling organic carbon deposition (i.e., primary productivity vs. terrigenous supply) and their paleoceanographic significance, three sediment cores (PS2471, PS2474. and PS2476) from the Laptev Sea continental margin were investigated for their content and composition of organic carbon. The characterization of organic matter indudes the determination of buk parameters (hydrogen index values and C/N ratios) and the analysis of specific biomarkers (n-alaknes, fatty acids, alkenones, and pigments).Total organic carbon (TOC) values vary between 0.3 and 2%. In general, the organic matter from the Laptev Sea continental margin is dominated by terrigenous matter throughout. However. significant amounts of marine organic carbon occur. The turbidites, according to a still preliminary stratigraphy probably deposited during glacial Oxygen Isotope Stages 2 and 4, are characterized by maximum amounts of organic carbon of terrigenous origin. Marine organic carbon appears to show ... : For susceptibility records see Nürnberg et al. (1995) dataset: doi:10.1594/PANGAEA.733565 ...

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