REEs and Sr-Nd isotope variations in a 20 ky-sediment core from the middle Okinawa Trough, East China Sea: An in-depth provenance analysis of siliciclastic components

doi:10.1016/j.margeo.2019.105970

	REEs and Sr-Nd isotope variations in a 20 ky-sediment core from the middle Okinawa Trough, East China Sea: An in-depth provenance analysis of siliciclastic components
	Xu, Zhaokai 1,2,3,4; Lim, Dhongil 5,6; Li, Tiegang 2,7,8; Kim, Soyoung 9; Jung, Hoisoo 10; Wan, Shiming 1,2,3; Chang, Fengming 1,2; Cai, Mingjiang 1,8
刊名	MARINE GEOLOGY
	2019-09
卷号	415
关键词	Geochemical variation Chinese rivers Siliciclastic components Sediment source Kuroshio Current Okinawa Trough
ISSN号	0025-3227
DOI	10.1016/j.margeo.2019.105970
英文摘要	We analyzed rare earth elements (REEs) and Sr-Nd isotope compositions of siliciclastic components in a sediment core from the middle Okinawa Trough (OT), to elucidate spatiotemporal variations in the sediment provenance, and their underlying mechanisms for the last 20 ky. Our results show that the trough deposits were characterized by different proportions of Changjiang- and Taiwan-derived (especially, the western rivers) sediments over time, from which we infer dramatic changes in sea-level, intensity of the Kuroshio Current (KC) inflow, and the East Asian monsoon since the last glacial maximum (LGM). In contrast to previous studies, the sea-level lowstand proximity of the paleo-Changjiang to the middle OT, and the contemporaneous enhancement of the East Asian winter monsoon (EAWM) may have played pivotal roles in supplying terrigenous inputs and forming middle OT deposits during the last glacial period, whereas the paleo-Huanghe was of lesser importance. After the early Holocene (especially the late Holocene cold period between similar to 4.8 and similar to 2.7 cal ky BP), a remarkable shift in the combined records of REEs and Nd isotopes reveals a causal link between variations in the Taiwan source and the KC inflow, coupled with climate changes in the East China Sea (ECS). This study suggests that Sr-Nd isotope compositions and REEs are useful proxies for understanding the links between river development and paleoenvironmental/paleoclimatic changes in East Asian marginal regions.
资助项目	Korea Institute of Ocean Science & Technology research program - Ministry of Oceans and Fisheries, Korea[PM61310]
WOS关键词	KUROSHIO CURRENT ; PALEOENVIRONMENTAL CHANGE ; MONSOON CLIMATE ; YANGTZE DELTA ; CHANGJIANG YANGTZE ; RIVER SEDIMENT ; ASIAN MONSOON ; GRAIN-SIZE ; YELLOW ; LEVEL
WOS研究方向	Geology ; Oceanography
语种	英语
出版者	ELSEVIER
WOS记录号	WOS:000481723500015
内容类型	期刊论文
源URL	[http://ir.fio.com.cn:8080/handle/2SI8HI0U/30079]
专题	自然资源部第一海洋研究所
通讯作者	Lim, Dhongil; Li, Tiegang
作者单位	1.Chinese Acad Sci, Inst Oceanol, CAS Key Lab Marine Geol & Environm, Qingdao 266071, Shandong, Peoples R China 2.Qingdao Natl Lab Marine Sci & Technol, Lab Marine Geol, Qingdao 266061, Shandong, Peoples R China 3.Chinese Acad Sci, Ctr Ocean Megasci, Qingdao 266071, Shandong, Peoples R China 4.CAS Ctr Excellence Quaternary Sci & Global Change, Xian 710061, Shaanxi, Peoples R China 5.Korea Inst Ocean Sci & Technol, South Sea Res Inst, Geoje 43201, South Korea 6.Univ Sci & Technol, Dept Marine Environm Sci, Daejeon 34113, South Korea 7.State Ocean Adm, Inst Oceanog 1, Key Lab State Ocean Adm Marine Sedimentol & Envir, Qingdao 266061, Shandong, Peoples R China 8.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 9.Korea Polar Res Inst, Div Polar Ocean Sci, Incheon 21990, South Korea 10.Korea Inst Ocean Sci & Technol, Dept Marine Geol & Geophys, Busan 49111, South Korea
推荐引用方式 GB/T 7714	Xu, Zhaokai,Lim, Dhongil,Li, Tiegang,et al. REEs and Sr-Nd isotope variations in a 20 ky-sediment core from the middle Okinawa Trough, East China Sea: An in-depth provenance analysis of siliciclastic components[J]. MARINE GEOLOGY,2019,415.
APA	Xu, Zhaokai.,Lim, Dhongil.,Li, Tiegang.,Kim, Soyoung.,Jung, Hoisoo.,...&Cai, Mingjiang.(2019).REEs and Sr-Nd isotope variations in a 20 ky-sediment core from the middle Okinawa Trough, East China Sea: An in-depth provenance analysis of siliciclastic components.MARINE GEOLOGY,415.
MLA	Xu, Zhaokai,et al."REEs and Sr-Nd isotope variations in a 20 ky-sediment core from the middle Okinawa Trough, East China Sea: An in-depth provenance analysis of siliciclastic components".MARINE GEOLOGY 415(2019).