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dc.contributor.authorKarisiddaiah, S M-
dc.identifier.issn0975-1033 (Online); 0379-5136 (Print)-
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 10-32U+0025); 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 (1.21-2.51U+0025), and therefore may be of transitional nature.en_US
dc.publisherNISCAIR-CSIR, Indiaen_US
dc.rights CC Attribution-Noncommercial-No Derivative Works 2.5 Indiaen_US
dc.sourceIJMS Vol.17(3) [September 1988]en_US
dc.titlePetrology of Offshore Basalts of Bombay Harbour Area, West Coast of Indiaen_US
Appears in Collections:IJMS Vol.17(3) [September 1988]

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