Organic-geochemical bulk parameters and specific biomarkers of three sediment core from the Laptev Sea ...

In order to examine the variation in marine and terrigenous sources of the organic matter during the last 15,000 Cal. yr BP, hydrogen index values, C/N ratios, and specific biomolecules (short- and long-chain n-alkanes, short-chain fatty acids, sterols, alkenones, and pigments) were determined in th...

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Bibliographic Details
Main Authors: Fahl, Kirsten, Stein, Ruediger
Format: Article in Journal/Newspaper
Language:English
Published: PANGAEA 1999
Subjects:
Vibro corer
Kasten corer
Gravity corer Kiel type
Transdrift-III
ARK-IX/4
ARK-XI/1
Kapitan Dranitsyn
Polarstern
Paleoenvironmental Reconstructions from Marine Sediments @ AWI AWI_Paleo
Quaternary Environment of the Eurasian North QUEEN
Arctic Ocean
laptev
Laptev Sea
Sea ice
Online Access:https://dx.doi.org/10.1594/pangaea.728661
https://doi.pangaea.de/10.1594/PANGAEA.728661
Description
Summary:In order to examine the variation in marine and terrigenous sources of the organic matter during the last 15,000 Cal. yr BP, hydrogen index values, C/N ratios, and specific biomolecules (short- and long-chain n-alkanes, short-chain fatty acids, sterols, alkenones, and pigments) were determined in three sediment cores from the Laptev Sea continental margin. The results show that the interpretation of the biomarker data is much more complicated and less definitive in comparison to similar data sets from low-latitude open-ocean environments. This is mainly caused by the complexity of the Arctic Ocean system, which is characterized by a high seasonality of sea-ice cover and primary productivity, sea-ice sediment transport and a high fluvial supply of freshwater (aquatic) organic matter. A combination of organic geochemical, organic petrographic and micropaleontological data may yield to a more precise identification of organic-carbon sources for these complex systems. On the Laptev Sea shelf (cores KD9502-14 and ... : Supplement to: Fahl, Kirsten; Stein, Ruediger (1999): Biomarkers as organic-carbon-source and environmental indicators in the Late Quaternary Arctic Ocean: Problems and Perspectives. Marine Chemistry, 63(3-4), 293-309 ...

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