Record Details

Evidences for seawater-rock hydrothermal interaction in the serpentinites from Northern Central Indian Ridge

DRS at CSIR-National Institute of Oceanography

View Archive Info
 
 
Field Value
 
Title Evidences for seawater-rock hydrothermal interaction in the serpentinites from Northern Central Indian Ridge
 
Creator Ray, Dwijesh
Banerjee, R.
Iyer, S.D.
Mukhopadhyay, S.
 
Subject Hydrothermal alteration
mid-oceanic ridge
Northern Central Indian Ridge
seawater– rock interaction
 
Description Serpentinites and serpentinized harzburgites were collected from a ridge-transform intersection at 6 ddgrees 39 minutes S-68 degrees 19 minutes E from the Northern Central Indian Ridge. The degree of serpentinization is extensive and varies from 90 to 100%. Olivine and orthopyroxene are largely pseudomorphed to lizardite-chrysotile ‘mesh’ and ‘bastite’ respectively. Numerous serpentine vein network associated with clusters of magnetite are also present. On the basis of mineralogical paragenesis, mineral chemistry and bulk rock analyses, we infer that the present serpentinites might have formed due to the interaction of harzburgites and seawater at a low temperature. Additionally, positive Eu anomaly, higher La/Sm and low Nb/La ratios suggest substantial hydrothermal input during the onset of serpentinization
 
Date 2009-11-10T11:28:06Z
2009-11-10T11:28:06Z
2009
 
Type Journal Article
 
Identifier Current Science, vol.97(8); 1239-1243
http://drs.nio.org/drs/handle/2264/3425
 
Language en
 
Rights 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 Current Science Association