Record Details

Alteration of basaltic glasses from the Central Indian Ocean

DRS at CSIR-National Institute of Oceanography

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Field Value
 
Title Alteration of basaltic glasses from the Central Indian Ocean
 
Creator Iyer, S.D.
 
Subject basalts
mineralogy
geochemistry
palagonite
basalt-seawater interaction
texture
 
Description Textural, mineralogical and compositional characteristics of basaltic glasses from the Central Indian Ocean show them to be altered to varying extents through their interaction with the seawater, resulting in the formation of palagonite. The major chemical changes are the loss of Si, Mg and Ca and a gain of Na and K whilst, Fe and Ti remained immobile. It reflects that the basaltic glasses have undergone initial to intermediate stages of palagonitisation under low temperature oxidative alterations. Subsequent accretion of ferromanganese oxides over the glasses have halted the progress of alteration
 
Date 2009-01-10T11:15:55Z
2009-01-10T11:15:55Z
1999
 
Type Journal Article
 
Identifier Journal of the Geological Society of India, Vol.54; 609-620p.
http://drs.nio.org/drs/handle/2264/1781
 
Language en
 
Rights Copyright [1999]. 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