Elemental and Sr-Nd isotopic compositional disparity of riverine sediments around the Yellow Sea: Constraints from grain-size and chemical partitioning SCIE SCOPUS

Cited 12 time in WEB OF SCIENCE Cited 12 time in Scopus
Title
Elemental and Sr-Nd isotopic compositional disparity of riverine sediments around the Yellow Sea: Constraints from grain-size and chemical partitioning
Author(s)
Lim, Dhongil; Jung, Hoisoo; Xu, Zhaokai; Jeong, Kapsik; Li, Tiegang
KIOST Author(s)
Lim, Dhong Il(임동일)Jung, Hoi Soo(정회수)
Alternative Author(s)
임동일; 정회수; 정갑식
Publication Year
2015-12
Abstract
To obtain a better understanding of the source compositions of the river sediments around the Yellow Sea and their relationship with source rocks, elements and strontium-neodymium (Sr-Nd) isotopes of different grain-sizes (silt and clay populations) and chemical (labile and residual phases) fractionations in riverine sediments were studied extensively. These results clearly revealed a systematic compositional disparity between Korean river (KR) and Chinese river (CR) sediments, especially in the residual (detrital) fraction. The geochemical dissimilarity between these might reflect inherited signatures of their source rocks but with minor control from chemical weathering. In particular, the remarkable enrichment of some elements (iron (Fe) and magnesium (Mg)) and the behavior of large ion lithophile elements (e.g., barium (Ba), potassium (K) and Sr) during weathering as well as less-radiogenic Sr isotopic compositions implies that CR sediments might be weathering products of relatively more mafic rocks, with abundant ferromagnesian and plagioclase feldspar minerals, compared with KR sediments derived from silicic granites with relatively higher quartz and potassium feldspar contents. This different petrological rationale is clearly evident in an A-CN-K diagram, which estimated the source rock of CR sediments as granodioritic, a composition that reflects accurately the average composition of weathered continental crust in China. The recognition of such geochemical systematics in two river sediments, especially in grain-size and chemically partitioned data, may contribute to the establishment of provenance tracers for the Yellow Sea and East China Sea sediments with multi-sources as well the dust deposition in the western Pacific. (C) 2015 Elsevier Ltd. All rights reserved.
ISSN
0883-2927
URI
https://sciwatch.kiost.ac.kr/handle/2020.kiost/2366
DOI
10.1016/j.apgeochem.2015.09.018
Bibliographic Citation
APPLIED GEOCHEMISTRY, v.63, pp.272 - 281, 2015
Publisher
PERGAMON-ELSEVIER SCIENCE LTD
Keywords
Elemental compositions; Sr-Nd isotopes; Sediment origin; Silicate weathering; Yellow Sea
Type
Article
Language
English
Document Type
Article
Publisher
PERGAMON-ELSEVIER SCIENCE LTD
Files in This Item:
There are no files associated with this item.

qrcode

Items in ScienceWatch@KIOST are protected by copyright, with all rights reserved, unless otherwise indicated.

Browse