The rare earth element compositions of the Changjiang (Yangtze) and Huanghe (Yellow) river sediments SCIE SCOPUS

Cited 232 time in WEB OF SCIENCE Cited 249 time in Scopus
Title
The rare earth element compositions of the Changjiang (Yangtze) and Huanghe (Yellow) river sediments
Author(s)
Yang, SY; Jung, HS; Choi, MS; Li, CX
KIOST Author(s)
Jung, Hoi Soo(정회수)
Alternative Author(s)
정회수
Publication Year
2002-07
Abstract
Thirty-four samples from the Changjiang and Huanghe were analyzed to characterize their rare earth element (REE) compositions. Although REE concentrations in the Changjiang sediments are higher than those of the Huanghe sediments, the former are less variable. Bulk samples and acid-leachable fractions have convex REE patterns and middle REE enrichments relative to upper continental crust, whereas flat patterns are present in the residual fractions. Source rock composition is the primary control on REE composition, and weathering processes play a minor role. Grain size exerts some influence on REE composition, as demonstrated by the higher REE contents of clay minerals in sediments from both rivers. Heavy minerals contribute about 10-20% of the total REE in the sediments. Apatite is rare in the river sediments, and contributes less than 2% of the REE content, but other heavy minerals such as sphene, allanite and zircon are important reservoirs of residual REE fractions. The Fe-Mn oxides phase accounts for about 14% of bulk REE content in the Changjiang sediments, which could be one of the more important factors controlling REE fractionation in the leachable fraction. (C) 2002 Elsevier Science B.V. All rights reserved.
ISSN
0012-821X
URI
https://sciwatch.kiost.ac.kr/handle/2020.kiost/5679
DOI
10.1016/S0012-821X(02)00715-X
Bibliographic Citation
EARTH AND PLANETARY SCIENCE LETTERS, v.201, no.2, pp.407 - 419, 2002
Publisher
ELSEVIER SCIENCE BV
Keywords
rare earths; sediments; Huang He; Yangtze river
Type
Article
Language
English
Document Type
Article
Publisher
ELSEVIER SCIENCE BV
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