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Evolution of the basalts from three back-arc basins of southwest Pacific

DRS at CSIR-National Institute of Oceanography

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Title Evolution of the basalts from three back-arc basins of southwest Pacific
 
Creator Mudholkar, A.V.
Paropkari, A.L.
 
Subject basalts
petrology
geochemistry
mineralogy
magma chambers
plate tectonics
volcanic rocks
hydrothermal activity
 
Description Petrography, petrochemistry, and mineral chemistry of basalts from the Woodlark, Manus, and Lau basins from the southwest Pacific have been studied to understand their magmatic evolution. Basalt from the western Woodlark Basin (Dobu Seamount) indicates mixing of a near-primitive magma with fractionated basaltic melt in shallow magma chambers. Basalts from Manus Basin and Central Lau Spreading Center (Lau Basin) are typical N-MORBs, and they exhibit olivine fractionation under high oxidizing conditions while basalts from Mangatolu Triple Junction (Lau Basin) are enriched in Al sub(2) O sub(3), K sub(2) O, and Zr indicative of a contribution from a subducting plate
 
Date 2009-01-10T11:15:58Z
2009-01-10T11:15:58Z
1999
 
Type Journal Article
 
Identifier Geo-Marine Letters, Vol.18; 305-314p.
http://drs.nio.org/drs/handle/2264/1789
 
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 Springer