Record Details

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

DRS at CSIR-National Institute of Oceanography

View Archive Info
 
 
Field Value
 
Title Potential diagenetic and detrital sources for calcareous sediments from the Carlsberg Ridge, Indian Ocean
 
Creator Valsangkar, A.B.
Borole, D.V.
Shejwalkar, A.S.
Kalangutkar, N.G.
Fernandes, N.O.
Dias, C.C.
 
Subject Carbonate sediments
Clay minerals
Detrital deposits
Grain size
 
Description 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
 
Date 2009-06-02T11:34:33Z
2009-06-02T11:34:33Z
2009
 
Type Journal Article
 
Identifier Current Science, vol.96(8); 1090-1099
http://drs.nio.org/drs/handle/2264/3348
 
Language en
 
Publisher Current Science Association