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Articles | Volume 11, issue 23
Articles | Volume 11, issue 23
https://doi.org/10.5194/bg-11-6895-2014
© Author(s) 2014. This work is distributed under
the Creative Commons Attribution 3.0 License.
https://doi.org/10.5194/bg-11-6895-2014
© Author(s) 2014. This work is distributed under
the Creative Commons Attribution 3.0 License.
Articles | Volume 11, issue 23
Research article
 | 
10 Dec 2014
Research article |  | 10 Dec 2014

Transfer of organic carbon through marine water columns to sediments – insights from stable and radiocarbon isotopes of lipid biomarkers

S. G. Wakeham and A. P. McNichol

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Short summary
Compound-specific δ13C and Δ14C of lipids show that marine organic carbon (OC) in Black and Arabian Sea sediment trap material accounted for 66-100% of OC, with lower terrigenous (3-8%) and relict (4-16%) contributions. Marine OC in sediments was lower (66-90%), but terrigenous and relict OC were higher (3-17% and 7-13%). Sinking OC is overwhelmingly marine, but pre-aged terrigenous and relict OC are better preserved during delivery to the sediments.
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