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dc.contributor.authorJumaila, C.P.U.
dc.contributor.authorPattan, J.N.
dc.contributor.authorAhmad, S.M.
dc.contributor.authorParthiban, G.
dc.contributor.authorKhedekar, V.D.
dc.contributor.authorPadmakumari, V.M.
dc.contributor.authorMilindraj, P.
dc.date.accessioned2018-06-06
dc.date.accessioned2018-10-23T09:24:59Z
dc.date.available2017-05-01
dc.date.available2018-10-23T09:24:59Z
dc.date.issued2017
dc.identifier.citationIndian Journal of Geo-Marine Sciences., vol.46(5); 2017; 871-876
dc.identifier.issn0975-1033
dc.identifier.urihttp://nopr.niscair.res.in/handle/123456789/41679
dc.identifier.urihttp://drs.nio.org/drs/handle/2264/7858
dc.description.abstractGlass shards from an ash layer of about 8 Ma old extracted from a core drilled at an ODP-758 site in the Bay of Bengal (BOB) were studied for morphology and chemical composition in order to trace their possible source. Glass shards are of bubble wall, platy and pumice shard type indicating magmatic type of eruption. Electron probe micro analysis (EPMA) of glass shards suggesta rhyolite composition and high K cal-alkaline series. FeO (1.23%) and TiO2 (0.1%) contents of these glass shards are distinctly higher compared to the earlier known Youngest (~74 ka), Middle (~0.54 Ma) and Oldest (~0.84 Ma) Toba Tuffs. Tectonomagmatic, triangular (Ti-Zr-Y) plot and chondrite- normalized REE pattern, are all indicative of volcanic arc source most probably from the nearby Indonesian arc volcanism.
dc.language.isoen
dc.publisherCSIR, India
dc.relation.ispartofIndian J Geo-Mar Sci
dc.relation.isreferencedbySCI
dc.titleMorphology and chemical composition of ash layer of about 8 Ma old from ODP-758 site, Bay of Bengal
dc.typeJournal Article
dc.affiliation.authorCochin University of Science and Technology, Kochi, Kerala, India


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