New archive of another significant potential sediment source in the South China Sea

doi:10.1016/j.margeo.2019.01.003

	New archive of another significant potential sediment source in the South China Sea
	Liu, Jianguo 1,2; Cao, Li 1,3; Yan, Wen 1,3; Shi, Xuefa 2,4
刊名	MARINE GEOLOGY
	2019-04
卷号	410 页码:16-21
关键词	Sediment provenance South China Sea Weathering of local materials East of the Pearl River Sediment transport Smectite
ISSN号	0025-3227
DOI	10.1016/j.margeo.2019.01.003
英文摘要	Sediment provenance is an important part of the sediment source-to-sink transport process from land to sea. However, we sometimes cannot explain some contradictory problems well when assessing sediment sources in certain areas. The northern South China Sea (SCS) is currently considered to be dominantly supplied with sediments from the Pearl River, Taiwan and Luzon. For smectite (one type of clay mineral), Luzon is normally thought to be a significant source when considering only the high smectite percentages in Luzon-derived sediments and neglecting their limited sediment discharge into the sea and longer transport distance of its sediments from this island. Recently, clay mineral compositions of the Pearl River originated sediments were reported to change from rich in smectite from similar to 2500 years ago due to the anthropogonic activities. By contrast, the wide area in the east of the Pearl River (EPR) is similarly characterized by sediments with high smectite percentages and a shorter transport distance than those from Luzon. However, a previous study showed that surface sediment samples with high smectite percentages were occasionally distributed in bays. Here, we present a sediment archive of 16 gravity cores from neighboring bays/harbors along the northern SCS coast. Unlike surface sediments with low smectite percentages, core sediments from the coastal bays/harbors of the EPR show high smectite percentages, indicating that the EPR besides the Pearl River and/or Luzon might be as another potential sediment source for the northern SCS. In South China, widely distributed igneous rocks/volcanic materials are prodigious sources for sediments in the northern SCS slope. In future work, weathering of local materials must be considered when differentiating various sediment sources.
资助项目	[GD908-JC-07]
WOS关键词	EAST-ASIAN MONSOON ; KUROSHIO CURRENT INTRUSION ; CLAY MINERAL DISTRIBUTION ; SURFACE SEDIMENTS ; GEOCHEMICAL INVESTIGATIONS ; ELEMENT GEOCHEMISTRY ; HOLOCENE EVOLUTION ; EROSION PATTERNS ; GRAIN-SIZE ; RECORDS
WOS研究方向	Geology ; Oceanography
语种	英语
出版者	ELSEVIER SCIENCE BV
WOS记录号	WOS:000460716000002
内容类型	期刊论文
源URL	[http://ir.fio.com.cn:8080/handle/2SI8HI0U/24807]
专题	自然资源部第一海洋研究所
通讯作者	Liu, Jianguo
作者单位	1.Chinese Acad Sci, South China Sea Inst Oceanol, Key Lab Ocean & Marginal Sea Geol, Guangzhou 510301, Guangdong, Peoples R China 2.Qingdao Natl Lab Marine Sci & Technol, Lab Marine Geol, Qingdao 266061, Peoples R China 3.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 4.SOA, Inst Oceanog 1, Key Lab Marine Sedimentol & Environm Geol, Qingdao 266061, Peoples R China
推荐引用方式 GB/T 7714	Liu, Jianguo,Cao, Li,Yan, Wen,et al. New archive of another significant potential sediment source in the South China Sea[J]. MARINE GEOLOGY,2019,410:16-21.
APA	Liu, Jianguo,Cao, Li,Yan, Wen,&Shi, Xuefa.(2019).New archive of another significant potential sediment source in the South China Sea.MARINE GEOLOGY,410,16-21.
MLA	Liu, Jianguo,et al."New archive of another significant potential sediment source in the South China Sea".MARINE GEOLOGY 410(2019):16-21.