A high resolution record of rare earth element compositional changes from the mud deposit on the inner shelf of the East China Sea: Implications for paleoenvironmental changes

doi:10.1016/j.quaint.2016.09.056

	A high resolution record of rare earth element compositional changes from the mud deposit on the inner shelf of the East China Sea: Implications for paleoenvironmental changes
	Mi, Beibei 1; Liu, Shengfa 2; Shi, Xuefa ; Li, Xiaoyan ; Pan, Hui-Juan 3; Chen, Min-Te 3; Wang, Xuchen
刊名	QUATERNARY INTERNATIONAL
	2017-08-15
卷号	447 页码:35-45
关键词	Sediment Rare earth element Provenance East China Sea Mud deposit Paleoenvironmental
ISSN号	1040-6182
DOI	10.1016/j.quaint.2016.09.056
英文摘要	A paleoenvironmental reconstruction of the East China Sea (ECS) is presented using rare earth element (REE) analysis of sediments from Core MZ02, which was retrieved from the inner continental shelf's mud area. The analytic results show that the total REEs in the fine sediment vary between 137.76 mu g/g and 231.53 mu g/g with an average value of 187.69 mu g/g. Obvious changes were found during the process of sedimentation. By comparing with the REE compositions from the potential provenances, the ratios of (La/Sm) ucc and (Gd/Yb) ucc revealed that the sediments were mainly derived from river detrital outputs of the Changjiang (Yangtze River), Minjiang and mountainous rivers from western Taiwan Island. The contributions of terrestrial materials from these three main provenances were controlled by sea level change and the Taiwan Warm Current (TWC)-Chinese Coastal Current (CCC) system, which is mainly driven by the East Asian monsoon. The high sedimentation rate during the transgression period between the late Pleistocene and early Holocene (13000-9800 a B.P.) was caused by a well-proportioned mixed provenance from Changjiang, western Taiwanese rivers and Minjiang sediments, due to the lower sea level and the location of the foreshore-nearshore face. Because of the stronger sediment reworking and erosion at the shelf edge during the early Holocene (9800-7300 a B.P.), the strengthening summer East Asian monsoon transported the Minjiang and western Taiwanese river material northeastward, and it became the main sediment source for fine sediments in the shallow sea region of the ECS, while the Changjiang provided a relatively minor amount of detrital sediment to the shelf. The increasing strength of the TWC might have played an important role in sediment dispersal and deposition on the ECS inner shelf during the period 7300-3500 a B.P., thus mountainous river material became the dominant sediment on the shelf of the ECS. Furthermore, the results indicate that the East Asian monsoon and the weakening of the TWC were linked to an abrupt increase in Changjiang-derived terrigenous detritus material since 3500 a B.P., the source and sink pattern during this period is consistent with the modern sedimentation environment. (C) 2017 Elsevier Ltd and INQUA. All rights reserved.
资助项目	Marine Public Welfare Research Project[200805063]
WOS关键词	SOUTHEASTERN YELLOW SEA ; ASIAN WINTER MONSOON ; LATE PLEISTOCENE ; YANGTZE-RIVER ; SOUTH CHINA ; SEDIMENT ACCUMULATION ; CHANGJIANG YANGTZE ; MILLENNIAL-SCALE ; OKINAWA TROUGH ; GRAIN-SIZE
WOS研究方向	Physical Geography ; Geology
语种	英语
出版者	PERGAMON-ELSEVIER SCIENCE LTD
WOS记录号	WOS:000406940500005
内容类型	期刊论文
源URL	[http://ir.fio.com.cn:8080/handle/2SI8HI0U/27513]
专题	自然资源部第一海洋研究所
通讯作者	Liu, Shengfa
作者单位	1.Qingdao Inst Marine Geol, Key Lab Marine Hydrocarbon Resources & Environm G, Minist Land & Resource, Qingdao 266071, Peoples R China 2.First Inst Oceanog, Key Lab Marine Sedimentol & Environm Geol, SOA, Qingdao 266061, Peoples R China 3.Qingdao Natl Lab Marine Sci & Technol, Lab Marine Geol, Qingdao 266061, Peoples R China
推荐引用方式 GB/T 7714	Mi, Beibei,Liu, Shengfa,Shi, Xuefa,et al. A high resolution record of rare earth element compositional changes from the mud deposit on the inner shelf of the East China Sea: Implications for paleoenvironmental changes[J]. QUATERNARY INTERNATIONAL,2017,447:35-45.
APA	Mi, Beibei.,Liu, Shengfa.,Shi, Xuefa.,Li, Xiaoyan.,Pan, Hui-Juan.,...&Wang, Xuchen.(2017).A high resolution record of rare earth element compositional changes from the mud deposit on the inner shelf of the East China Sea: Implications for paleoenvironmental changes.QUATERNARY INTERNATIONAL,447,35-45.
MLA	Mi, Beibei,et al."A high resolution record of rare earth element compositional changes from the mud deposit on the inner shelf of the East China Sea: Implications for paleoenvironmental changes".QUATERNARY INTERNATIONAL 447(2017):35-45.