Petrographical indicators of petrogenesis: Examples from Central Indian Ocean Basin basalts

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dc.contributor.author Mislankar, P.G.
dc.contributor.author Iyer, S.D.
dc.date.accessioned 2006-09-20T06:40:56Z
dc.date.available 2006-09-20T06:40:56Z
dc.date.issued 2001
dc.identifier.citation Indian Journal of Marine Sciences, vol.30(1), 1-8pp.
dc.identifier.uri http://drs.nio.org/drs/handle/2264/400
dc.description.abstract Petrographical features of the Central Indian Basin (CIOB) basalts were studied to understand their genetic significance. The fresh basaltic pillows show three textural zones from the top glassy (zone A) through the intermediate (zone B) to the holocrystalline interior (zone C), with each characterised by varying assemblages of plagioclase and olivine that form different textures. Based on the presence and morphotypes of the plagioclase and olivine, the CIOB basalts are classified as aphyric, plagioclase dominant, plagioclase+olivine bearing and rarely plagioclase+olivine+augite bearing. The mineral phases and the textures reflect the magmatic conditions under which the basalts crystallised from a tholeiitic magma.
dc.format.extent 1733016 bytes
dc.format.mimetype application/pdf
dc.language.iso en
dc.publisher NISCAIR, CSIR
dc.rights This digital version of the paper hosted with the permission from IJMS/NISCAIR. http://www.niscair.res.in
dc.subject Central Indian Basin
dc.subject basaltic pillows
dc.title Petrographical indicators of petrogenesis: Examples from Central Indian Ocean Basin basalts
dc.type Journal Article


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