Potential diagenetic and detrital sources for calcareous sediments from the Carlsberg Ridge, Indian Ocean

dc.contributor.author	Valsangkar, A.B.
dc.contributor.author	Borole, D.V.
dc.contributor.author	Shejwalkar, A.S.
dc.contributor.author	Kalangutkar, N.G.
dc.contributor.author	Fernandes, N.O.
dc.contributor.author	Dias, C.C.
dc.date.accessioned	2009-06-02T11:34:33Z
dc.date.available	2009-06-02T11:34:33Z
dc.date.issued	2009
dc.identifier.citation	Current Science, vol.96(8); 1090-1099
dc.identifier.uri	http://drs.nio.org/drs/handle/2264/3348
dc.description.abstract	Six sediment cores from the Carlsberg Ridge (CR) were studied for elemental concentration, magnetic susceptibility (chi), grain size and clay mineral distribution, and sedimentation rate to decipher possible detrital and diagenetic contributions. The sediments were characterized by very low chi, moderate total organic carbon, high CaCO sub(3) content and high accumulation rate (3 cm/ kyr). Clay mineralogical and geochemical data suggest major continental source from the Arabian Sea, and very low Mn distribution, absence of tephra and characteristic magnetic signatures rule out volcanic or hydrothermal input. Consistent peaks around 10, 25, 45, 60 and 80 cm depth and high uranium are due to sedimentary diagenesis
dc.language.iso	en
dc.publisher	Current Science Association
dc.subject	Carbonate sediments
dc.subject	Clay minerals
dc.subject	Detrital deposits
dc.subject	Grain size
dc.title	Potential diagenetic and detrital sources for calcareous sediments from the Carlsberg Ridge, Indian Ocean
dc.type	Journal Article