REE geochemistry of the Zhoutan Group metasedimentary rocks in central Jiangxi Province,Southeast China  

作　　者：HU Gongren LIU Congqiang YU Ruilian 

机构地区：[1]Department of Environmental Science and Engineering, Huaqiao University, Quanzhou 362021, China [2]Institute of Geochemistry, Chinese Academy of Sciences, Guiyang 550002, China [3]State Key Laboratory for Mineral Deposits Research, Nanjmg Untversity, Nanjing 210093, China

出　　处：《Chinese Journal Of Geochemistry》2009年第2期154-162,共9页中国地球化学学报

基　　金：supported jointly by the National Natural Science Foundation of China (40673061);the Ministry of Science and Technology of China (95-Pre-39);the Foundation of State Key Laboratory for Mineral Deposits Research, Nanjing University

摘　　要：Detailed REE and trace elements geochemical studies of the Zhoutan Group metasedimentary rocks in central Jiangxi Province, China, and rock-forming minerals such as garnet were conducted and the results showed that the REEs are partly present in the rock-forming minerals and are dominantly contained in the lattice of accessory minerals. In the process of metamorphism the REEs between garnet porphyroblast and rock and the partitioning of REEs between garnet and the host rock is obviously controlled by the chemical composition of the system. The REEs compositions of metamorphic veins and their minerals display remarked lanthanide tetrad effects and the element pairs Zr-Hf, Y-Ho, Pb-Nd and U-Th have also experienced a certain degree of fractionation with respect to the metasedimentary rocks and they can be used as discriminating indicators to some extent for the occurrence of fluid processes in the process of metamorphism of the Zhoutan Group.Detailed REE and trace elements geochemical studies of the Zhoutan Group metasedimentary rocks in central Jiangxi Province, China, and rock-forming minerals such as garnet were conducted and the results showed that the REEs are partly present in the rock-forming minerals and are dominantly contained in the lattice of accessory minerals. In the process of metamorphism the REEs between garnet porphyroblast and rock and the partitioning of REEs between garnet and the host rock is obviously controlled by the chemical composition of the system. The REEs compositions of metamorphic veins and their minerals display remarked lanthanide tetrad effects and the element pairs Zr-Hf, Y-Ho, Pb-Nd and U-Th have also experienced a certain degree of fractionation with respect to the metasedimentary rocks and they can be used as discriminating indicators to some extent for the occurrence of fluid processes in the process of metamorphism of the Zhoutan Group.

关 键 词：稀土元素地球化学 变质岩石 周潭群 江西省 中国 东南亚 稀土石榴石 副矿物 

分 类 号：P618.51[天文地球—矿床学] P588.3[天文地球—地质学]