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dc.contributor.authorAlagarsamy, R.
dc.contributor.authorYou, C.-F.
dc.contributor.authorNath, B.N.
dc.contributor.authorSijinKumar, A.V.
dc.date.accessioned2009-12-24T05:02:34Z
dc.date.available2009-12-24T05:02:34Z
dc.date.issued2010
dc.identifier.citationMicrochemical Journal, vol.94(1); 90-97
dc.identifier.otherno
dc.identifier.urihttp://drs.nio.org/drs/handle/2264/3520
dc.description.abstractDowncore variation of rare earth elements (REEs) in the authigenic Fe-Mn oxides of a sediment core (covering a record of last approx. 40 kyr) from the Andaman Sea, a part of the Indian Ocean shows distinctive positive Ce and Eu anomalies. These positive Ce anomalies (Ce = 1.1 approx. 1.8) are ascribed to be due to oxidation of deep sea sediments. The large positive Eu anomalies (i.e., Eu > 1.8 to 3.2) occur within a time span near the glacial/interglacial transition (approx. 7000-14,000 yr BP) which could be due to the past hydrothermal activity or to the effects arising from sea level changes. During glacial times, the Andaman Sea was almost completely isolated due to low sea level, leading to a reduction in sediment supply from the Ayeyarwady River. The variations of metal abundances (i.e., Ca, Al, Mn, and Fe) in the authigenic fraction provided independent information to evaluate the water column physicochemical changes during the glacial/interglacial transition period. The studied sediment core records changes in riverine inputs and reflects depositional changes related to sea level fluctuations and climatic events over the past 40 kyr in the Andaman Sea
dc.language.isoen
dc.publisherElsevier
dc.rightsAn edited version of this paper was published by Elsevier. Copyright [2009] Elsevier
dc.subjectrare earths
dc.subjecttrace elements
dc.subjectauthigenic minerals
dc.subjectmass spectroscopy
dc.subjectmajor elements
dc.subjectsediments
dc.titleDetermination of rare earth, major and trace elements in authigenic fraction of Andaman Sea (Northeastern Indian Ocean) sediments by inductively coupled plasma-mass spectrometry
dc.typeJournal Article


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