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Mineral chemistry of Carlsberg Ridge basalts at 3 degrees 35'- 3 degrees 41' N

DRS at CSIR-National Institute of Oceanography

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Title Mineral chemistry of Carlsberg Ridge basalts at 3 degrees 35'- 3 degrees 41' N
 
Creator Iyer, S.D.
Banerjee, R.
 
Subject minerals
geochemistry
ridges
basalts
bathymetry
 
Description Mineral chemical analyses of transitional basalts from the Carlsberg Ridge show plagioclase (An approximately 87 mole %), phenocrysts, and microphenocrysts have a K sub(2)O depletion as compared to the laths (approximately 79 mole %). Olivine (approximately 91 mole %) are few and rarely zoned. The composition of plagioclase and olivine indicate low pressure equilibrium crystallization. The basalts were probably derived through fractional crystallization at shallow depths under low partial melting conditions. Morphology of plagioclase phenocrysts and bulk rock chemistry suggest magma mixing and fractional crystallization for the origin of these basalts
 
Date 2009-05-06T10:47:05Z
2009-05-06T10:47:05Z
1993
 
Type Journal Article
 
Identifier Geo-Marine Letters, Vol.13; 153-158p.
http://drs.nio.org/drs/handle/2264/2848
 
Language en
 
Rights Copyright [1993]. 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