An Sm-Nd isotopic dating study of the Archean Kongling Complex in the Huangling area of the Yangtze Craton  

作　　者：Ling, WL Gao, S Zheng, HF Zhou, L Zhao, ZB 

机构地区：[1]China Univ Geosci, Fac Geosci, Wuhan 430074, Peoples R China [2]Peking Univ, Dept Geol, Beijing 100871, Peoples R China

出　　处：《Chinese Science Bulletin》1998年第14期1187-1191,共5页

基　　金：theNationalNaturalScienceFoundationofChina(GrantNos. 4 96 0 30 4 4 4 96 2 5 30 5 4 92 90 10 2 ) ;theStateEducationCommissionofChinaandtheOpenLaboratoryofConstitution; InteractionandDy namicsoftheCrust MantleSystem ;MinistryofGeologyandMiner

摘　　要：Sm Nd isotopic compositions of associated amphibolites, TTG gneisses and granitic gneisses from the Archean Kongling Complex of the Yangtze Craton, South China are systematically analyzed. The results show that the amphibolites and TTG gneisses have a similar age of ca. 2 700 Ma, which well agrees with zircon U Pb dating of previous studies. However, their ε Nd ( t ) are different, suggestive of possible dissimilarity in source composition.Sm-Nd isotopic compositions of associated amphibolites, TTG gneisses and granitic gneisses from the Archean Kongling Complex of the Yangtze Craton, South China are systematically analyzed. The results show that the amphibolites and TTG gneisses have a similar age of ca. 2 700 Ma, which well agrees with zircon U-Pb dating of previous studies. However, their epsilon(Nd)(t) are different, suggestive of possible dissimilarity in source composition.

关 键 词：Yangtze CRATON Kongling Complex ARCHEAN high grade terrain Sm Nd isotopic CHRONOLOGY CRUST MANTLE evolution. 

分 类 号：P534.2[天文地球—古生物学与地层学]