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Late-Quaternary variations in clay minerals along the SW continental margin of India: Evidence of climatic variations

DRS at CSIR-National Institute of Oceanography

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Title Late-Quaternary variations in clay minerals along the SW continental margin of India: Evidence of climatic variations
 
Creator Chauhan, O.S.
Sukhija, B.S.
Gujar, A.R.
Nagabhushanam, P.
Paropkari, A.L.
 
Subject clay minerals
quaternary
palaeoclimate
continental margins
illite
chlorite
kaolinite
climatic changes
 
Description Down-core variations in illite, chlorite, smectite and kaolinite (the major clays) in two sup(14)C-dated cores collected along the SW continental margin of India show that illite and chlorite have enhanced abundance during 20-17, 12.5, 11-9.5, and 5-4.8 ka B.P., whereas smectite accumulation is higher between 17 and 12.5, and after 9 ka B.P. The climate may have been predominantly arid at 17 (20-17), 12.5, 10.5 (11-9.5), and 4.8 ka B.P. The first three dates correspond to the last glacial maximum, Bolling-Allerod, and Younger Dryas events, respectively. The SW monsoon was variable between 17 and 15 ka B.P., and it was more stable and intense after the Younger Dryas until about 6 ka B.P.
 
Date 2009-01-09T08:08:12Z
2009-01-09T08:08:12Z
2000
 
Type Journal Article
 
Identifier Geo-Marine Letters, Vol.20; 118-122p.
http://drs.nio.org/drs/handle/2264/1651
 
Language en
 
Rights Copyright [2000]. 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 Springer