Rare earth element geochemistry in the inner shelf of the East China Sea and its implication to sediment provenances

IOCAS-IR

	Rare earth element geochemistry in the inner shelf of the East China Sea and its implication to sediment provenances
	Xu FJ(徐方建); Li AC(李安春); Li TG(李铁刚); Xu KH(胥可辉); Chen SY(陈世悦); Qiu LW(邱隆伟); Cao YZ(操应长)
发表期刊	Journal of Rare Earths
ISSN	1002-0721
	2011-07-15
出版年	2011
卷号	v.29 期号:07 页码:88-95
文献类型	CNKI期刊论文
摘要	Gravity core EC2005, located in the mud wedge off the Zhejiang-Fujian coast in the inner shelf of the East China Sea (ECS), was analyzed for its lithology, grain size, rare earth elements (REE) and AMS14C dating. Results revealed high-resolution paleoenvironmental evolution and multiple switches of sediment provenances in the inner shelf of ECS. The lithology, grain size and REE concentrations of sediments varied significantly down the core. Mean grain size ranged from 8 to 121 μm, and the values of ΣREE were 152.8-227.9 μg/g. The chondrite- and shale-normalized REE patterns indicated their similarity to the terrigenous sediments in the study area. Between 17.3-12.3 ka BP the sediments in the inner shelf of ECS were mainly originated from local drainage basins. The source then gradually switched to the Yangtze River between 12.3 and 9.8 ka BP. Since about 10-9.8 ka BP, the sediments in the study area were dominantly derived from the Yangtze River. The continuous rising of sea level and formation of coastal current along the inner shelf played a key role in the switches of sediment provenances.
关键词	last deglaciation inner shelf of the East China Sea grain size sediment provenance rare earth elements
CNKI专辑号	B;A;
CNKI专辑名称	工程科技Ⅰ辑;基础科学;
CNKI专题号	A010;A011;
CNKI专题名称	海洋学;地质学;
分类号	P736.41
收录类别	中科院核心
语种	英文;
资助项目(基金）	supported by the National Natural Science Foundation of China (40776030) ; Natural Science Foundation of Shandong Province (ZR2010DL009) ; Open Fund of the Key Laboratory of Marine Geology and Environment, Chinese Academy of Sciences (MGE2010KG02) ; Fundamental Research Funds for the Central Universities (10CX04004A) ; the Doctoral Fund of China University of Petroleum (Y0901036)
文献类型	CNKI期刊论文
条目标识符	http://ir.qdio.ac.cn/handle/337002/191651
专题	中国科学院海洋研究所
作者单位	1.KeyLaboratoryofMarineGeologyandEnvironment,InstituteofOceanology,ChineseAcademyofSciences 2.SchoolofGeosciences,ChinaUniversityofPetroleum 3.KeyLaboratoryofShandongProvinceforReservoirGeology,ChinaUniversityofPetroleum 4.DepartmentofMarineScience,CoastalCarolinaUniversity
推荐引用方式 GB/T 7714	Xu FJ,Li AC,Li TG,et al. Rare earth element geochemistry in the inner shelf of the East China Sea and its implication to sediment provenances. 2011.