作者机构:[1]State Key Laboratory of Lithospheric Evolution, Institute of Geology and Geophysics, Chinese Academy of Sciences, Beijing 100029, China, [2]State Key Laboratory of Continental Dynamics, Department of Geology, Northwest University, Xi'an 710069, China
相关基金:Field work has been assisted by Zhang Lvqiao, Peng Peng, Liu Fu, Chen Jingzhi and Ao Songjian. We thank Liu Chuanzhou and Wang Xuance for their helpful discussion. Critical comments from Prof,. Wan Yusheng and Zhao Guochun are thanked which significantly improved this manuscript. This work was supported by the National Natural Science Foundation of China (40730315, 40721062 and 40642023).