Sediment provenance and paleoenvironmental change in the Ulleung Basin of the East (Japan) Sea during the last 21 kyr

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	Sediment provenance and paleoenvironmental change in the Ulleung Basin of the East (Japan) Sea during the last 21 kyr
	Xu, Zhaokai 1,2,3; Lim, Dhongil 3; Choi, Jinyong 2; Li, Tiegang1 ; Wan, Shiming 1; Rho, Kyoungchan 4
刊名	JOURNAL OF ASIAN EARTH SCIENCES
	2014-10-15
卷号	93 页码:146-157
关键词	Sediment provenance Sea level Tsushima Warm Current East Asian summer monsoon East (Japan) Sea
通讯作者	Xu, ZK (reprint author), Korea Inst Ocean Sci & Technol, South Sea Res Inst, Lib Marine Sample, Geoje 656830, South Korea.
英文摘要	Despite the well-reconstructed paleoceanography of the late Quaternary deposits in the East (Japan) Sea (ES), provenances of terrigenous sediments and a comprehensive interpretation of their variations since the Last Glacial Maximum remain unclear, especially in regard to the mainland China- and Taiwan-derived matter. Grain size, conservative trace elements, rare earth elements (REEs), Nd isotope, and clay mineralogy of core sediments from the Ulleung Basin of the ES were investigated for better understanding of detrital sediment provenance and transport process and then their forcing mechanisms over the last 21 kyr. Geochemical-mineralogical multi-indices in this study showed notable three-phase changes in sediment provenance, which can be closely related to sea-level fluctuation, development of the Tsushima Warm Current as well as intermittent influence from the East Asian summer monsoon climate evolution. During Unit 1(21.1-8.4 kyr BP) when the Tsushima Warm Current was absent in the ES, the paleo-Changjiang and the paleo-Huanghe mouth might be situated close to the study area and thus mainland China could have played major role in the southwestern Ulleung Basin sedimentation. In particular, the formation of rhythmic dark-colored alternation in Unit 1 is possibly attributable to the pulse of paleo-Huanghe discharge associated with centurial- to millennial-scale variability in the East Asian summer monsoon. In Unit 2 (8.4-7.2 kyr BP), these river mouths gradually retreated to their present positions with global sea-level rise, leading to decreasing terrigenous sediment supply from mainland China to the study area. Since 7.2 kyr BP (Unit 3), sedimentation in the Ulleung Basin should still be mainly derived from mainland China. Meanwhile, increasing chlorite/kaolinite ratio but decreasing epsilon(Nd) value revealed that terrigenous matter from Taiwan might have been limitedly transported northward to the study area by the fully evolved Tsushima Warm Current. A prominent decline in chlorite/kaolinite ratio, together with contrast change on epsilon(Nd) value, centered at around 2.9 kyr BP (3.3-2.4 kyr BP) may have been caused by the Tsushima Warm Current suppression, possibly related to the Pulleniatina minimum event popularly found in the study area and nearby seas. (C) 2014 Elsevier Ltd. All rights reserved.
学科主题	Geology
收录类别	SCI
语种	英语
WOS记录号	WOS:000342549100012
内容类型	期刊论文
源URL	[http://ir.qdio.ac.cn/handle/337002/23844]
专题	海洋研究所_海洋地质与环境重点实验室
作者单位	1.Chinese Acad Sci, Inst Oceanol, Key Lab Marine Geol & Environm, Qingdao 266071, Peoples R China 2.Kunsan Natl Univ, Dept Oceanog, Kunsan 573701, South Korea 3.Korea Inst Ocean Sci & Technol, South Sea Res Inst, Lib Marine Sample, Geoje 656830, South Korea 4.Korea Inst Ocean Sci & Technol, EEZ Georesources Res Unit, Ansan 426744, South Korea
推荐引用方式 GB/T 7714	Xu, Zhaokai,Lim, Dhongil,Choi, Jinyong,et al. Sediment provenance and paleoenvironmental change in the Ulleung Basin of the East (Japan) Sea during the last 21 kyr[J]. JOURNAL OF ASIAN EARTH SCIENCES,2014,93:146-157.
APA	Xu, Zhaokai,Lim, Dhongil,Choi, Jinyong,Li, Tiegang,Wan, Shiming,&Rho, Kyoungchan.(2014).Sediment provenance and paleoenvironmental change in the Ulleung Basin of the East (Japan) Sea during the last 21 kyr.JOURNAL OF ASIAN EARTH SCIENCES,93,146-157.
MLA	Xu, Zhaokai,et al."Sediment provenance and paleoenvironmental change in the Ulleung Basin of the East (Japan) Sea during the last 21 kyr".JOURNAL OF ASIAN EARTH SCIENCES 93(2014):146-157.