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Rare earth element studies of surficial sediments from the southwestern Carlsberg Ridge, Indian Ocean

DRS at CSIR-National Institute of Oceanography

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Title Rare earth element studies of surficial sediments from the southwestern Carlsberg Ridge, Indian Ocean
 
Creator Pattan, J.N.
Higgs, N.C.
 
Subject carbonate sediments
rare earths
geochemistry
 
Description The rare earth element (REE) contents of sixteen surficial calcareous sediments from the southwestern Carlsberg Ridge, Indian Ocean, have been determined. The total REE vary from 35 ppm to 126 ppm and are inversely related to the calcium carbonate content. REEs show a strong positive correlation with Al+Fe+K+Mg+Na (r sup(2)=0.98) and Mn+Fe+Cu+Ni (r sup(2)=0.86) suggesting that the REE is associated with a combined phase of clays (mainly illite) and Mn-Fe oxyhydroxides. The aeolian input into these sediments is suggested from the weak positive Eu/Eu anomaly. Shale-normalized (NASC) pattern along with La sub((n)/Yb sub((n) ratio suggest enrichment of heavy REE (HREE) relative to the light REE (LREE) with a negative Ce/Ce anomaly implying retention of a bottom water REE pattern.
 
Date 2009-01-25T06:05:35Z
2009-01-25T06:05:35Z
1995
 
Type Journal Article
 
Identifier Proceedings of the Indian Academy of Sciences (Earth and Planetary Sciences), Vol.104; 569-578p.
http://drs.nio.org/drs/handle/2264/2363
 
Language en
 
Rights Copyright [1995]. 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 Indian Academy of Sciences, Bangalore, India