Friday, July 5, 2013

Highlights—Sediment on the Shelf

Although they represent less than ~10% of the world ocean area, continental shelves are sedimentologically and biogeochemically important.  To understand dynamics of the present western continental shelf of India, Kurian et al. describe an extensive geochemical and isotopic data set from a range of settings. The results reveal spatial patterns in major elements and rare earth elements, Corg/N molar ratios, δ13C and δ15N values, trends interpreted in terms of sediment provenance.  These patterns reflect the variable physical and biochemical processes in the source regions and in the depositional setting, and may be reflected in ancient successions as well.

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