Rare earth element compositions of core sediments from the shelf of the South Sea, Korea: Their controls and origins SCIE SCOPUS

Cited 45 time in WEB OF SCIENCE Cited 47 time in Scopus
Title
Rare earth element compositions of core sediments from the shelf of the South Sea, Korea: Their controls and origins
Author(s)
Jung, Hoi-Soo; Lim, Dhongil; Choi, Jin-Yong; Yoo, Hae-Soo; Rho, Kyung-Chan; Lee, Hyun-Bok
KIOST Author(s)
Jung, Hoi Soo(정회수)Lim, Dhongil(임동일)
Publication Year
2012-10-01
Abstract
Rare earth elements (REEs) of bulk sediments and heavy mineral samples of core sediments from the South Sea shelf, Korea, were analyzed to determine the constraints on REE concentrations and distribution patterns as well as to investigate their potential applicability for discriminating sediment provenance. Bulk sediment REEs showed large variation in concentrations and distribution patterns primarily due to grain size and carbonate dilution effects, as well as due to an abundance of heavy minerals. In the fine sandy sediments (cores EZ02-15 and 19), in particular, heavy minerals (primarily monazite and titanite/sphene) largely influenced REE compositions. Upper continental crust-normalized REE patterns of these sand-dominated sediments are characterized by enriched light REEs (LREEs), because of inclusion of heavy minerals with very high concentrations in LREEs. Notably, such a strong LREE enrichment is also observed in Korean river sediments. So, a great care must be taken when using the REE concentrations and distribution patterns of sandy and coarse silty shelf sediments as a proxy for discriminating sediment provenance. In the fine-grained muddy sediments with low heavy mineral abundance, in contrast. REE fractionation ratios and their UCC-normalized patterns seem to be reliable proxies for assessing sediment provenance. The resultant sediment origin suggested a long lateral transportation of some fine-grained Chinese river sediments (probably the Changjiang River) to the South Sea of Korea across the shelf of the northern East China Sea. (C) 2012 Elsevier Ltd. All rights reserved.
ISSN
0278-4343
URI
https://sciwatch.kiost.ac.kr/handle/2020.kiost/3439
DOI
10.1016/j.csr.2012.08.008
Bibliographic Citation
CONTINENTAL SHELF RESEARCH, v.48, pp.75 - 86, 2012
Publisher
PERGAMON-ELSEVIER SCIENCE LTD
Subject
SOUTHEASTERN YELLOW-SEA; EAST CHINA SEA; PROVENANCE DISCRIMINATION; GEOCHEMICAL COMPOSITIONS; CHANGJIANG YANGTZE; GRAINED SEDIMENTS; CONTINENTAL-SHELF; SURFACE SEDIMENTS; REE GEOCHEMISTRY; MUD DEPOSITS
Keywords
Rare earth elements; Heavy minerals; Sediment provenance; South Sea of Korea; Northern East China Sea
Type
Article
Language
English
Document Type
Article
Publisher
PERGAMON-ELSEVIER SCIENCE LTD
Related Researcher
Research Interests

Marine Geochemistry,Paleoceanography,Marine Pollution,해양지화학,고해양학,해양오염학

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