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    Radiocarbon constraint on relict organic carbon contributions to Ross Sea sediments

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    2005GC001097.pdf (570.0Kb)
    Date
    2006-04-19
    Author
    Ohkouchi, Naohiko  Concept link
    Eglinton, Timothy I.  Concept link
    Metadata
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    Citable URI
    https://hdl.handle.net/1912/984
    As published
    https://doi.org/10.1029/2005GC001097
    DOI
    10.1029/2005GC001097
    Keyword
     Ross Sea; Radiocarbon; Sediment; Organic carbon 
    Abstract
    We estimate the relative contribution of relict organic matter to the acid-insoluble organic carbon (AIOC) fraction of surface sediments from Ross Sea, Antarctica, on the basis of 14C abundance. The bulk isotopic characteristics of AIOC can largely be explained by simple two-source models of modern and relict organic carbon, when samples are grouped according to two geographical regions, namely, southwestern and south central Ross Sea. This spatial variability in relict organic carbon could be controlled by proximity to the edge of the Ross Ice Shelf and ice drainage areas. Radiocarbon abundance in the AIOC is potentially an excellent tool to estimate the contribution of relict organic carbon in the Antarctic margin sediments.
    Description
    Author Posting. © American Geophysical Union, 2006. This article is posted here by permission of American Geophysical Union for personal use, not for redistribution. The definitive version was published in Geochemistry Geophysics Geosystems 7 (2006): Q04012, doi:10.1029/2005GC001097.
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    • Marine Chemistry and Geochemistry (MC&G)
    Suggested Citation
    Geochemistry Geophysics Geosystems 7 (2006): Q04012
     

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