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Clay mineralogy of innershelf sediments off Cochin, west coast of India

DRS at CSIR-National Institute of Oceanography

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Title Clay mineralogy of innershelf sediments off Cochin, west coast of India
 
Creator Reddy, N.P.C.
Rao, N.V.N.D.
Dora, Y.L.
 
Description Kaolinite, montmorillonite and illite are the clay minerals occurring in decreasing order of abundance in the Holocene sediments of inner shelf and adjacent coastal environments of Cochin Region. Southern part of Vembanad Lake, estuarine part of Periyar River and outer parts of inner shelf have relatively more kaolinite (greater than 60%) than in sediments of northern part of lake and near inner shelf. In Vembanad Lake, kaolinite concentration shows a gradual decrease with concomitant increase in smectite from south to north. Such a variation from the source indicates size sorting of clay minerals with coarser kaolinite depositing closer to the source than finer montmorillonite. In the inner shelf, sediments from outer parts have significantly more kaolinite than nearshore sediments. Higher proportion of kaolinite in sediments of outer parts of inner shelf are considered to have been deposited during a lowered sea level in Holocene
 
Date 2009-05-08T11:35:00Z
2009-05-08T11:35:00Z
1992
 
Type Journal Article
 
Identifier Indian Journal of Marine Sciences, Vol.21; 152-154p.
http://drs.nio.org/drs/handle/2264/3011
 
Language en
 
Rights Copyright [1992]. 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 NISCAIR, New Delhi