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Possible factors that control calcite dissolution in the western tropical Indian Ocean

DRS at CSIR-National Institute of Oceanography

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Title Possible factors that control calcite dissolution in the western tropical Indian Ocean
 
Creator Naik, S.S.
Naidu, P.D.
 
Description Calcite dissolution in marine sediments is known to be driven by the degree of saturation state with respect to calcium carbonate, of overlying bottom waters. Three paleocarbonateion proxies, planktonic foraminifer size index, shell weight and calcite crystallinity applied to a set of core top samples reveal that calcite dissolution commences from 2250m onwards and intensifies at around 3900m water depth in the Western Tropical Indian Ocean 1. It was proposed earlier that carbonate dissolution can be caused due to acidification of pore water 2. It is shown that shell weights of the foraminifera species Pulleniatina obliquiloculata indicate that this intense dissolution observed at 3900m was caused due to undersaturation of CO3= in the bottom waters in the Indian Ocean
 
Date 2008-07-22T06:51:56Z
2008-07-22T06:51:56Z
2008
 
Type Journal Article
 
Identifier Current Science, Vol.95; 22-23p.
http://drs.nio.org/drs/handle/2264/1307
 
Language en
 
Rights Copyright [2008]. It is tried to respect the rights of the copyright holders to the best of the knowledge. If it is brought to our notice that the rights are violated then the item would be withdrawn.
 
Publisher Current Science Association