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Evidences for a volcanic province in the Central Indian Basin

DRS at CSIR-National Institute of Oceanography

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Title Evidences for a volcanic province in the Central Indian Basin
 
Creator Iyer, S.D.
Sudhakar, M.
 
Subject volcanism
ferromanganese nodules
geographical distribution
 
Description Based on various lines of evidence such as the widespread occurrence of basalts, pumice, volcanic glass shards and their transformational products (zeolites, palagonites, and smectite-rich sediments), we suggest the presence of a volcanic province in the Central Indian Basin (CIB). In addition to the rocks studied, the occurrence of many morpho-tectonic features such as seamounts, abyssal hills and major fracture zones at 73 degrees E, 75 degrees 45'E and 79 degrees E, have helped in correlating and in deciphering the source of the rock types. Further, the large manganese nodule fields in the CIB are seen to occur in conjunction with the volcanic materials, since the latter forms nuclei and substrates for ferromanganese deposits. It is concluded that a spatial relation exists between the occurrence of the volcanic materials and the ferromanganese deposit in the CIB
 
Date 2009-01-25T05:57:35Z
2009-01-25T05:57:35Z
1995
 
Type Journal Article
 
Identifier Journal of the Geological Society of India, Vol.46; 353-358p.
http://drs.nio.org/drs/handle/2264/2338
 
Language en
 
Rights Copyright [1995]. 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 Geological Society of India