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Distribution of organic carbon in surface sediments along the eastern Arabian Sea: a revisit

DRS at CSIR-National Institute of Oceanography

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Title Distribution of organic carbon in surface sediments along the eastern Arabian Sea: a revisit
 
Creator PrakashBabu, C.
Brumsack, H.-J.
Schnetger, B.
 
Subject sediment chemistry
distribution
organic carbon
biological production
sediment texture
dissolved oxygen
sedimentation
continental margins
 
Description One hundred twelve surface sediment samples along the western continental margin of India were analyzed for organic carbon (OC). Elevated OC concentrations are associated with sediments deposited in areas where producitivity is moderate to high. Very high OC concentrations, as reported in earlier studies even for regions where productivity is comparatively low, could not be confirmed. The re-analysis of selected samples by coulometry shows that OC concentrations determined previously by the wet oxidation method may be too high by up to more than a factor of two. A broad similarity in the distribution of OC and bioproductivity is observed, which is in accordance with other productivity proxies, such as the abundance of planktonic foraminiferal species G. bulloides and hydrogen indices (HI). The results indicate the importance of bioproductivity for OC accumulation along the western continental margin of India, even though low disssolved oxygen concentrations in the water column, sedimentation rate, sediment texture, clay mineral content, dilution by quartz and carbonate, as well as topography are considered responsible for the general OC distribution in this area
 
Date 2009-01-10T11:15:57Z
2009-01-10T11:15:57Z
1999
 
Type Journal Article
 
Identifier Marine Geology, Vol.162; 91-103p.
http://drs.nio.org/drs/handle/2264/1786
 
Language en
 
Rights Copyright [1999]. All efforts have been made to respect the copyright to the best of our knowledge. Inadvertent omissions, if brought to our notice, stand for correction and withdrawal of document from this repository.
 
Publisher Elsevier