The surface sediment types and their rare earth element characteristics from the continental shelf of the northern south China sea

CORC > 南海海洋研究所 > 中国科学院南海海洋研究所 > 中科院边缘海地质重点实验室

	The surface sediment types and their rare earth element characteristics from the continental shelf of the northern south China sea
	Wang, SH ; Zhang, N ; Chen, H ; Li, L ; Yan, W
刊名	CONTINENTAL SHELF RESEARCH
	2014
卷号	88 页码:185-202
关键词	Rare earth element (REE) Sediment types Provenance analyses Continental shelf Northern South China Sea
ISSN号	0278-4343
通讯作者	wyan@scsio.ac.cn
中文摘要	The grain size as well as some major and trace elements, including rare earth element (REE), for 273 surface sediment samples collected from the continental shelf of the northern South China Sea were analyzed in this study. The sediment types are mainly sandy silt and silt, making up 60% of the whole samples, and secondly are mud, sandy mud, muddy sand and silty sand, making up 28% of the whole samples, based on grain-size in which the Folks classification was used. The total REE content (Sigma REE) show a wide variation from 21 ppm to 244 ppm with an average value of 155 ppm, which similar to the average Sigma REE of the China loess, but much different from that in deep-sea clay, showing a significant terrigenous succession. The REE contents in different sediment types vary greatly, mainly enriching in silt, sandy silt, mud and sandy mud. The REE distribution contours parallel to the coastal, presenting like strips and their contents gradually reduce with increasing distance from the coast. The high content of the western Pearl River Mouth, Shang/Xiachuan Islands and Hailing Bay might be regarded to the coastal current developed from the east to the west along to the Pearl River Mouth in the northern South China Sea. But the chondrite-normalized REE patterns in various sediment types have no difference, basically same as those of coastal rivers and upper crust. They all show relative enrichments in light rare earth element (LREE), noticeable negative Eu anomaly and no Ce anomaly, indicating that those sediments are terrigenous sediments and from the same source region. Further analysis suggest that the sedimentary environment in the study area is relatively stable and granite widely distributed in the South China mainland is the main source of REE, which are transported mainly by the Pearl River. The late diagenesis has little effect on the REE. (C) 2014 Elsevier Ltd. All rights reserved.
学科主题	Oceanography
收录类别	SCI
资助信息	Key Project of NSFC-Guangdong Joint Foundation [U1133002]; Knowledge Innovation Program of the Chinese Academy of Sciences [MSGL12-03]
原文出处	PERGAMON-ELSEVIER SCIENCE LTD
WOS记录号	WOS:000343846100017
公开日期	2014-12-11
内容类型	期刊论文
源URL	[http://ir.scsio.ac.cn/handle/344004/10600]
专题	南海海洋研究所_中科院边缘海地质重点实验室
推荐引用方式 GB/T 7714	Wang, SH,Zhang, N,Chen, H,et al. The surface sediment types and their rare earth element characteristics from the continental shelf of the northern south China sea[J]. CONTINENTAL SHELF RESEARCH,2014,88:185-202.
APA	Wang, SH,Zhang, N,Chen, H,Li, L,&Yan, W.(2014).The surface sediment types and their rare earth element characteristics from the continental shelf of the northern south China sea.CONTINENTAL SHELF RESEARCH,88,185-202.
MLA	Wang, SH,et al."The surface sediment types and their rare earth element characteristics from the continental shelf of the northern south China sea".CONTINENTAL SHELF RESEARCH 88(2014):185-202.