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dc.contributor.authorBanakar, V.K.
dc.contributor.authorJauhari, P.
dc.date.accessioned1994-05-16T10:06:26Z
dc.date.accessioned2017-09-30T01:55:41Z
dc.date.available1994-05-16T10:06:26Z
dc.date.available2017-09-30T01:55:41Z
dc.date.issued1994
dc.identifier.citationJournal of the Geological Society of India, vol.43(5); 1994; 591-598
dc.identifier.issn0016-7622
dc.identifier.urihttp://drs.nio.org/drs/handle/2264/7369
dc.description.abstractGeochemical analyses of eighteen surface sediments samples collected from an area between 1 degree-15 degrees S latitudes and 73 degrees-87 degrees E longitudes exhibit significant variation in their chemical composition. Distribution patterns of the major and minor elements suggest a probable removal of a portion of Fe, Ti, Mg and Cr along with major portions of Mn, Ni, Cu and Zn as authigenic ferro-manganese colloids to the sediments. The rare earth elements (REE) exhibit nearly an order of magnitude enrichment in the nodules compared to the surrounding sediments. The positive Ce anomaly in the Nodules ( 0.25) is associated with negative Ce anomaly (0.04) in the host sediment indicating its oxidative scavenging preferentially by Fe-hydroxide colloidal flocs incorporating into the nodules. The shale (NASC) normalised patterns and end member ratios of REE indicate middle REE(MREE) enrichment over light REE(LREE) and heavy REE(HREE) in both nodules and sediments. The preferential uptake sequence of REE in the nodules could be given as MREE > LREE > HREE
dc.languageen
dc.publisherGeological Society of India
dc.relation.ispartofJ Geol Soc India
dc.relation.isreferencedbySCI
dc.subjectGeology and Geophysics
dc.subjectAquatic Non-Resources
dc.subject.othersediments
dc.subject.otherferromanganese nodules
dc.subject.othergeochemistry
dc.subject.otherrare earths
dc.subject.otherISW, Central Indian Ocean Basin
dc.titleGeochemical trends in the sediments and manganese nodules from a part of the Central Indian Basin
dc.typeJournal Article
dc.affiliation.authorCSIR-National Institute of Oceanography, Dona Paula, Goa, India


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