Magmatism and deformation times of the Xidatan rock series,East Kunlun Mountains |
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| Authors: | Chen Wen Zhang Yan Ji Qiang Wang Songshan Zhang Jianxin |
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| Institution: | 1.Institute of Geology,Chinese Academy of Geological Sciences,Beijing,China;2.Institute of Geology and Geophysics,Chinese Academy of Sciences,Beijing,China |
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| Abstract: | The Xidatan rock series consist of mylonite, gneiss and granite. The U-Pb age shows that the granite was formed at 206 Ma, and the40Ar/39Ar ages of the biotite display that the mylonite was formed at 145 Ma when the Xidatan ductile shearzone 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. |
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