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Signatures of rare-earth elements in banded corals of Kalpeni atoll-Lakshadweep archipelago in response to monsoonal variations

DRS at CSIR-National Institute of Oceanography

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Title Signatures of rare-earth elements in banded corals of Kalpeni atoll-Lakshadweep archipelago in response to monsoonal variations
 
Creator Naqvi, S.A.S.
Nath, B.N.
Balaram, V.
 
Subject geochemistry
rare earths
seasonal variations
Porites
 
Description Concentrations of rare-earth elements (REE) have been determined in seasonal bands of Porites species collected from the Lakshadweep lagoon. Total REE (REE) are very low (less than 3 ppm) in these corals. Seasonal variations in REE appear to have occurred with REE and the light rare-earths (LREE) enriched in the high density (representing monsoon season) bands. In contrast, the heavy rare-earths (HREE) are enriched in the low density bands. LREE enrichment in the high density bands is attributed to their higher availability during the rainy season due to the increased weathering of the continental sources. Elemental ratios and SEM photographs reveal the increased incorporation of terrigenous material into the growth bands during the monsoon season.
 
Date 2009-01-21T11:08:53Z
2009-01-21T11:08:53Z
1996
 
Type Journal Article
 
Identifier Indian Journal of Marine Sciences, Vol.25; 1-4p.
http://drs.nio.org/drs/handle/2264/2238
 
Language en
 
Rights Copyright [1996]. All efforts have been made to respect the copyright to the best of our knowledge. Inadvertent omissions, if brought to our notice, stand for correction and withdrawal of document from this repository.
 
Publisher NISCAIR, CSIR