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Petrology of seamounts in the Central Indian Ocean Basin: Evidence for near-axis origin

DRS at CSIR-National Institute of Oceanography

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Title Petrology of seamounts in the Central Indian Ocean Basin: Evidence for near-axis origin
 
Creator Mukhopadhyay, R.
Batiza, R.
Iyer, S.D.
 
Subject seamounts
petrology
geochemistry
palaeo studies
 
Description Previous studies on the distribution and morphology of ancient seamount chains (>50 Ma) in the Central Indian Ocean basin (CIOB) indicated their generation from the fast spreading Southeast Indian Ridge. The petrology of some of these seamounts is described. Fresh glass veneers of pillow basalts from these seamounts were analyzed by electron microprobe. The rocks show a low cotent of TiO sub(2) and FeO and moderate Mg suggesting slow eruption of a minimally frationed N-MORB magma. In terms of chemistry and morphology. CIOB seamounts are indistinguishable from seamounts across slow spreading MAR and fast spreading EPR.
 
Date 2009-01-25T06:05:35Z
2009-01-25T06:05:35Z
1995
 
Type Journal Article
 
Identifier Geo-Marine Letters, Vol.15; 106-110p.
http://drs.nio.org/drs/handle/2264/2365
 
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 Springer