Botz, R., Erlenkeuser, H., Koch, J. and Wehner, H. (1991) Analysis of sedimentary organic matter of a glacial/interglacial change (oxygen isotope stage ) in the Norwegian-Greenland Sea. Marine Geology, 98 (1). pp. 113-119. DOI 10.1016/0025-3227(91)90039-7.

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Abstract

Organic petrographical investigations of Norwegian Sea sediments deposited during oxygen istope stages 6 and 5 show significant changes in the relative amounts of "reactive" (vitrinite and liptinite) and "inert" (inertinite and graphite) particles. The [delta]13C values of the total organic fraction possibly reflect the variable content of reactives, i.e. the isotopic composition is more negative (to -23.9[per mille sign]) when the reactive components increase. The n-alkane distribution shows that the soluble organic matter deposited during late stage 6 and 5e reveals relatively low odd-even-predominance indices (OEP) associated with shorter chain lengths. This indicates a relatively higher marine algal contribution during stage 6 and 5e compared with stage 5d to 5a.

Document Type:	Article
Research affiliation:	Kiel University
Refereed:	No
Date Deposited:	02 Feb 2012 09:28
Last Modified:	23 Sep 2019 20:48
URI:	https://oceanrep.geomar.de/id/eprint/16395

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