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

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	Elemental and Sr-Nd isotopic compositional disparity of riverine sediments around the Yellow Sea: Constraints from grain-size and chemical partitioning
	Lim, Dhongil 1,2; Jung, Hoisoo 3; Xu, Zhaokai 1,4,5; Jeong, Kapsik 3; Li, Tiegang4
刊名	APPLIED GEOCHEMISTRY
	2015-12-01
卷号	63 期号:2015 页码:272-281
关键词	Elemental compositions Sr-Nd isotopes Sediment origin Silicate weathering Yellow Sea
英文摘要	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.
收录类别	SCI
语种	英语
WOS记录号	WOS:000366219800023
内容类型	期刊论文
源URL	[http://ir.qdio.ac.cn/handle/337002/86627]
专题	海洋研究所_海洋地质与环境重点实验室
作者单位	1.Korea Inst Ocean Sci & Technol, South Sea Res Inst, Geoje 656830, South Korea 2.Univ Sci & Technol, Marine Environm Chem & Biol, Daejeon 305350, Peoples R China 3.Korea Inst Ocean Sci & Technol, Marine Environm & Conservat Res Dept, Seoul 425600, South Korea 4.Chinese Acad Sci, Inst Oceanol, Key Lab Marine Geol & Environm, Qingdao 266071, Peoples R China 5.Qingdao Natl Lab Marine Sci & Technol, Funct Lab Marine Geol & Environm, Qingdao 266061, Peoples R China
推荐引用方式 GB/T 7714	Lim, Dhongil,Jung, Hoisoo,Xu, Zhaokai,et al. Elemental and Sr-Nd isotopic compositional disparity of riverine sediments around the Yellow Sea: Constraints from grain-size and chemical partitioning[J]. APPLIED GEOCHEMISTRY,2015,63(2015):272-281.
APA	Lim, Dhongil,Jung, Hoisoo,Xu, Zhaokai,Jeong, Kapsik,&Li, Tiegang.(2015).Elemental and Sr-Nd isotopic compositional disparity of riverine sediments around the Yellow Sea: Constraints from grain-size and chemical partitioning.APPLIED GEOCHEMISTRY,63(2015),272-281.
MLA	Lim, Dhongil,et al."Elemental and Sr-Nd isotopic compositional disparity of riverine sediments around the Yellow Sea: Constraints from grain-size and chemical partitioning".APPLIED GEOCHEMISTRY 63.2015(2015):272-281.