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Paleoproductivity, ventilation, and organic carbon burial in the Santa Barbara Basin (ODP Site 893, off California) since the last glacial

Nederbragt, AJ; Thurow, JW; Bown, PR; (2008) Paleoproductivity, ventilation, and organic carbon burial in the Santa Barbara Basin (ODP Site 893, off California) since the last glacial. Paleoceanography , 23 (1) , Article PA1211. 10.1029/2007PA001501. Green open access

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Abstract

Biogenic burial rates and coccolith assemblage data were generated for the past 16 ka at ODP Site 893 in the Santa Barbara Basin, off California, to determine if dysoxic events in the basin were related to changes in marine productivity. Coccolith abundance data show that changes in surface water conditions did indeed change in concert with oxygen levels at the sea floor. However, organic carbon burial rates varied independently, indicating that oxygenation of the water column is related mainly to intermediate water ventilation. A strong correlation of organic carbon burial rates with lithogenic, and to a lesser extent with carbonate and opal accumulation rates confirms recent conclusions that the export of organic carbon from the sea surface is largely controlled by the presence of ballast minerals.

Type:Article
Title:Paleoproductivity, ventilation, and organic carbon burial in the Santa Barbara Basin (ODP Site 893, off California) since the last glacial
Open access status:An open access version is available from UCL Discovery
DOI:10.1029/2007PA001501
Publisher version:http://dx.doi.org/10.1029/2007PA001501
Language:English
Additional information:Copyright 2008 by the American Geophysical Union
Keywords:Coccolithophore Export production, Oceanic anoxic event, Gulf-of-California, El-Nino event, Saanich Inlet, Northeast Pacific, British-Columbia, Marine-sediments, Particle fluxes, Varve formation
UCL classification:UCL > School of BEAMS > Faculty of Maths and Physical Sciences > Earth Sciences

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