REE geochemistry of suspended sediments from the rivers around the Yellow Sea and provenance indicators  

作　　者：YANG Shouye LI Congxian C. B. Lee T. K. Na 

机构地区：[1]Laboratory of Marine Geology, Tongji University,Laboratory of Marine Geology, Tongji University,School of Earth and Environment of Sciences, Seoul National University,School of Earth and Environment of Sciences, Seoul National University Shanghai 200092, China,Shanghai 200092, China,Seoul 151-742, Korea,Seoul 151-742, Korea

出　　处：《Chinese Science Bulletin》2003年第11期1135-1139,共5页

基　　金：This work was supported by the National Natural Science Foundation of China(Grant Nos.4997601 6 and 40206008);the Korean Science and Engineering Foundation.

摘　　要：Rare earth element (REE) compositions of the suspended sediments from the rivers around the Yellow Sea were different in that Korean river sediments (Han, Keum and Yeongsan Rivers) yield stronger fractionations than Chinese river sediments (Changjiang, Huanghe and Yalujiang), shown by obvious enrichments of LREE (light rare earth element) relative to UCC (upper continental crust). Variations of source rock compositions in the drainage basins are responsible for the differences of REE compositions between the river sediments. REE fractionation parameters including (La/Yb)UCC and (Gd/Yb)UCC as well as the ratios of La/Sc and Th/Sc can be treated as proper proxies for identifying the Chinese river sediments from those Korean river matters, and furthermore, for studying the provenances and paleoenvironmental changes of the marginal seas of China.Rare earth element (REE) compositions of the suspended sediments from the rivers around the Yellow Sea were different in that Korean river sediments (Han, Keum and Yeongsan Rivers) yield stronger fractionations than Chinese river sediments (Changjiang, Huanghe and Yalujiang), shown by obvious enrichments of LREE (light rare earth element) relative to UCC (upper continental crust). Variations of source rock compositions in the drainage basins are responsible for the differences of REE compositions between the river sediments. REE fractionation parameters including (La/Yb)UCC and (Gd/Yb)UCC as well as the ratios of La/Sc and Th/Sc can be treated as proper proxies for identifying the Chinese river sediments from those Korean river matters, and furthermore, for studying the provenances and paleoenvironmental changes of the marginal seas of China.

关 键 词：地球化学 黄海 稀有元素 REE 沉积物 中国 韩国 

分 类 号：P736.4[天文地球—海洋地质]