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Lithological and mineralogical changes observed in a core from the western Bay of Bengal

DRS at CSIR-National Institute of Oceanography

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Title Lithological and mineralogical changes observed in a core from the western Bay of Bengal
 
Creator Reddy, N.P.C.
Rao, K.M.
Putra, S.V.S.P.
Rao, Ch.M.
 
Subject lithology
mineralogy
cores
sediments
texture
clays
calcium carbonates
montmorillonite
chlorite
foraminifera
 
Description Lithological and mineralogical studies were carried out on sediments from a 650 cm long core from the north western Bay of Bengal at a depth of 2700 m. These studies demarcate a boundary at 380 cm designated as unit 1 from 0-380 cm and unit 2 from 380-650 cm. The sediments of unit 1 are dark yellowish brown color at the surface and light to dark olive grey colour downwards up to 380 cm. Texturally, it is comprised of clays and clayey silts. The coarse fraction contains well preserved foraminiferal skeletal remains. The total calcium carbonate (TCC) varies from 10 to 19% while the total organic carbon (TOC) ranges from 0.04 to 1.40%. Illite is the predominant mineral with concentrations varying from 49 to 60% followed by montmorillonite with concentrations between 22 to 36%. Chlorite content ranges from 12.8 to 29% and do not show any recognisable trend.
 
Date 2009-01-12T09:18:25Z
2009-01-12T09:18:25Z
1997
 
Type Conference Article
 
Identifier IGBP Symposium on Changes in Global Climate due to Natural and Human Activities,Ed by: Das, S.N.; Thakur, R.S. 180-198p.
http://drs.nio.org/drs/handle/2264/2059
 
Language en
 
Rights Copyright [1997]. 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 Allied, New Delhi (India)