Clay mineralogy of the riverine sediments of Hainan Island, South China Sea: Implications for weathering and provenance

doi:10.1016/j.jseaes.2014.08.036

CORC > 自然资源部第一海洋研究所 > 自然资源部第一海洋研究所 > 业务部门 > 海洋地质与地球物理研究室

	Clay mineralogy of the riverine sediments of Hainan Island, South China Sea: Implications for weathering and provenance
	Hu, Bangqi 1; Li, Jun 1; Cui, Ruyong 1; Wei, Helong 1; Zhao, Jingtao 1; Li, Guogang 2; Fang, Xisheng 3; Ding, Xue 1; Zou, Liang 1; Bai, Fenglong 1
刊名	JOURNAL OF ASIAN EARTH SCIENCES
	2014-12-15
卷号	96 页码:84-92
关键词	Clay minerals Provenance Weathering Hainan Island South China Sea
ISSN号	1367-9120
DOI	10.1016/j.jseaes.2014.08.036
英文摘要	Clay mineralogy of 54 fluvial samples collected from 20 major rivers on Hainan Island are investigated in order to determine compositional changes of clay minerals and to assess the weathering processes. The clay mineral assemblages consist dominantly of kaolinite (31-66%), with a lesser abundance of chlorite (22-44%) and illite (4-33%), and a trace amount of smectite (0-15%). Fluvial sediments from the east and northwest of Hainan Island are characteriZed by a higher kaolinite content and illite chemical index and poorer illite crystallinity than those from southwest Hainan. Only minor smectite (mean of 7%) occurs in the sediments from west Hainan; smectite is total lacking in east Hainan. Compared with the adjacent basins, Hainan Island is characterized by moderate to intensive chemical weathering with strong hydrolysis. Our results suggest that rainfall is the principal factor controlling the intensity of chemical weathering on Hainan. Island, with more intense chemical weathering occurring in eastern and northwestern Hainan. Another practical implication of this study is that it provides a "missing" end member (Hainan Island) in the provenance discrimination study focused on the northern South China Sea (SCS). Hainan fine-grained sediments likely play an important role in providing clay minerals to the northern SCS carried by the South China Sea Warm Current (SCSWC) during the summer. (C) 2014 Elsevier Ltd. All rights reserved.
资助项目	National Natural Science Foundation of China[41206049] ; National Natural Science Foundation of China[41476052] ; National Natural Science Foundation of China[41306066] ; National Natural Science Foundation of China[41376079]
WOS研究方向	Geology
语种	英语
出版者	PERGAMON-ELSEVIER SCIENCE LTD
WOS记录号	WOS:000347023300007
内容类型	期刊论文
源URL	[http://ir.fio.com.cn/handle/2SI8HI0U/3742]
专题	业务部门_海洋地质与地球物理研究室
作者单位	1.Qingdao Inst Marine Geol, Minist Land & Resources, Key Lab Marine Hydrocarbon Resources & Environm G, Qingdao 266071, Shandong, Peoples R China; 2.State Ocean Adm, North China Sea Branch, Marine Engn & Prospecting Inst North China Sea, Qingdao 266033, Peoples R China; 3.State Ocean Adm, Inst Oceanog 1, Key Lab Marine Sedimentol & Environm Geol, Qingdao 266061, Peoples R China
推荐引用方式 GB/T 7714	Hu, Bangqi,Li, Jun,Cui, Ruyong,et al. Clay mineralogy of the riverine sediments of Hainan Island, South China Sea: Implications for weathering and provenance[J]. JOURNAL OF ASIAN EARTH SCIENCES,2014,96:84-92.
APA	Hu, Bangqi.,Li, Jun.,Cui, Ruyong.,Wei, Helong.,Zhao, Jingtao.,...&Bai, Fenglong.(2014).Clay mineralogy of the riverine sediments of Hainan Island, South China Sea: Implications for weathering and provenance.JOURNAL OF ASIAN EARTH SCIENCES,96,84-92.
MLA	Hu, Bangqi,et al."Clay mineralogy of the riverine sediments of Hainan Island, South China Sea: Implications for weathering and provenance".JOURNAL OF ASIAN EARTH SCIENCES 96(2014):84-92.