Stable carbon isotope ratio variations of organic matter in Orca Basin sediments

Details Stable carbon isotope ratio variations of organic matter in Orca Basin sediments Stable carbon isotope ratio variations of organic matter in Orca Basin sediments

Feb 1981

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1981gecoa..45..257n&link_type=abstract

Geochimica et Cosmochimica Acta, vol. 45, Issue 2, pp.257-260

Physics

4

Scientific paper

Orca Basin is a highly reducing basin on the slope of the Gulf of Mexico. Stable carbon isotope ratios and total organic carbon percentages were determined for two cores within the basin and one control core outside the basin. The results show that the organic carbon content of the basin cores is consistently 2-3 times greater than that of the control core. The Pleistocene-Holocene boundary, indicated by a break in the 13 C depth profile, occurs at a greater sediment depth in the basin cores than in the control core. A small sampling interval has made it possible to detect an unexplained fine structure in the 13 C profile not previously observed.

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