Magmatism and deformation times of the Xidatan rock series,East Kunlun Mountains  

作　　者：陈文 张彦 季强 王松山 张建新 

机构地区：[1]Institute of Geology, Chinese Academy of Geological Sciences, Beijing 100037 China [2]Institute of Geology and Geophysics, Chinese Academy of Sciences, Beijing 100029 China

出　　处：《Science China Chemistry》2002年第z1期20-27,共8页中国科学（化学英文版）

基　　金：supported by the National Natural Science Foundation of China(Grant No.49973003);the National Key Basic Research Development Project of China(Grant No.2001CB409807);the Geological Science Special Project of the Ministry of Land and Resources(Grant No.2001010205).

摘　　要：The Xidatan rock series consist of mylonite, gneiss and granite. The U-Pb age shows that the granite was formed at 206 Ma, and the 40Ar/39Ar ages of the biotite display that the mylonite was formed at 145 Ma when the Xidatan ductile shear zone occurred. At about 110-100 Ma, the Xidatan Fault reactivated again. As a result, the biotite and muscovite of Xidatan rock series opened their argon isotope system.The Xidatan rock series consist of mylonite, gneiss and granite. The U-Pb age shows that the granite was formed at 206 Ma, and the ^(40)Ar/^(39)Ar ages of the biotite display that the my- lonite was formed at 145 Ma when the Xidatan ductile shear zone occurred. At about 110-100 Ma the Xidatan Fault reactivated again. As a result, the biotite and muscovite of Xidatan rock series opened their argon isotope system.

关 键 词：40AR/39AR age  U-PB age  ROCK series  Xidatan  East Kunlun. 

分 类 号：P588[天文地球—岩石学]