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Deposition of Mn-Cu-Ni-enriched sediments during glacial period in the Central Indian Basin

DRS at CSIR-National Institute of Oceanography

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Title Deposition of Mn-Cu-Ni-enriched sediments during glacial period in the Central Indian Basin
 
Creator Borole, D.V.
 
Subject sediment
geochemistry
manganese
copper
nickel
temporal variations
 
Description Two siliceous sediment cores collected from the Central Indian Basin have been analysed for organic carbon, biogenic silica, Al, Mn, Ni and Cu content. The concentrations of Mn, Cu and Ni showed one order of magnitude variation (an enrichment by a factor of 20) down the core, with a pronounced maximum at depths of 78 cm and 26 cm, corresponding to 390 + or - 80 and 320 + or - 60 kyr BP, respectively. The depthwise variation of Mn content matches closely that of cold water subtropical fauna, with both the parameters showing inverse relationship with organic carbon. The observed variations are due to changes in the palaeo-oceanographic conditions
 
Date 2009-05-06T10:55:49Z
2009-05-06T10:55:49Z
1993
 
Type Journal Article
 
Identifier Current Science, Vol.65(10); 778-782p.
http://drs.nio.org/drs/handle/2264/2875
 
Language en
 
Rights Copyright [1993]. 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 Current Science Association, Bangalore, India