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dc.contributor.authorKarisiddaiah, S.M.
dc.date.accessioned1995-06-17T10:01:37Z
dc.date.accessioned2017-09-30T01:29:49Z
dc.date.available1995-06-17T10:01:37Z
dc.date.available2017-09-30T01:29:49Z
dc.date.issued1988
dc.identifier.citationIndian Journal of Marine Sciences, vol.17; 1988; 208-213
dc.identifier.issn0379-5136
dc.identifier.urihttp://drs.nio.org/drs/handle/2264/7073
dc.description.abstractRecent marine geological and geophysical surveys indicate that the Deccan Traps extend to the offshore area of Bombay. Cores from bore holes in Deccan Traps collected from Bombay Harbour have been classified as basalts, olivine basalts, spilitic basalts, and dolerites. Plagioclase composition of basalts ranges from An72-60 to An40-45 (while in spilitic basalts it is in the range of 10-32%); augite (2Vz = 30 degrees - 50 degrees), fresh and altered olivine with ubiquitous magnetite and devitrified glass are conspicuous. The chemical data indicate that the basalts are tholeiitic. Secondary minerals encountered support the view that the basalts are spilitised. Basalts of this area show affinities to both continental and oceanic types especially in the abundances of TiO2 (1.21-2.51%), and therefore may be of transitional nature
dc.languageen
dc.publisherCSIR-NISCAIR
dc.relation.ispartofIndian J Mar Sci
dc.relation.isreferencedbySCI
dc.subjectGeology and Geophysics
dc.subject.otherboreholes
dc.subject.otherplagioclase
dc.subject.otherchemical composition
dc.subject.otherbasalts
dc.subject.othergeochemistry
dc.subject.otherpetrology
dc.subject.otherISW, India, Maharashtra, Bombay
dc.titlePetrology of offshore basalts of Bombay harbour area, west coast of India
dc.typeJournal Article


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