Radiocarbon dating of alkenones from marine sediments : III. Influence of solvent extraction procedures on 14C measurements of foraminifera


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dc.contributor.author Ohkouchi, Naohiko
dc.contributor.author Eglinton, Timothy I.
dc.contributor.author Hughen, Konrad A.
dc.contributor.author Roosen, Ellen
dc.contributor.author Keigwin, Lloyd D.
dc.date.accessioned 2011-03-09T20:45:47Z
dc.date.available 2011-03-09T20:45:47Z
dc.date.issued 2005
dc.identifier.citation Radiocarbon 47 (2005): 425-432 en_US
dc.identifier.uri http://hdl.handle.net/1912/4392
dc.description Author Posting. © Arizona Board of Regents on behalf of the University of Arizona, 2005. This article is posted here by permission of Dept. of Geosciences, University of Arizona for personal use, not for redistribution. The definitive version was published in Radiocarbon 47 (2005): 425-432. en_US
dc.description.abstract As a result of the growing use of multiple geochemical proxies to reconstruct ocean and climate changes in the past, there is an increasing need to establish temporal relationships between proxies derived from the same marine sediment record and ideally from the same core sections. Coupled proxy records of surface ocean properties, such as those based on lipid biomarkers (e.g. alkenone-derived sea surface temperature) and planktonic foraminiferal carbonate (oxygen isotopes), are a key example. Here, we assess whether 2 different solvent extraction procedures used for isolation of molecular biomarkers influence the radiocarbon contents of planktonic foraminiferal carbonate recovered from the corresponding residues of Bermuda Rise and Cariaco Basin sediments. Although minor Δ14C differences were observed between solvent-extracted and unextracted samples, no substantial or systematic offsets were evident. Overall, these data suggest that, in a practical sense, foraminiferal shells from a solvent-extracted residue can be reliably used for 14C dating to determine the age of sediment deposition and to examine age relationships with other sedimentary constituents (e.g. alkenones). en_US
dc.description.sponsorship This work was financially supported by NSF grant 9809624. N Ohkouchi was supported by a fellowship from Japan Society for the Promotion of Science. en_US
dc.format.mimetype application/pdf
dc.language.iso en_US en_US
dc.publisher Dept. of Geosciences, University of Arizona en_US
dc.relation.uri https://journals.uair.arizona.edu/index.php/radiocarbon/article/view/2836
dc.title Radiocarbon dating of alkenones from marine sediments : III. Influence of solvent extraction procedures on 14C measurements of foraminifera en_US
dc.type Article en_US

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