基金This paper is dedicated to Professor Zhendong You for his many and manifold contributions to metamorphic geology on the occasion of his 90th birthday. This study was financially supported by the National Natural Science Foundation of China （No. 41572044） and the SDUST Research Fund （No. 2015TDJH101）. We thank two anonymous reviewers for their constructive and helpful comments and suggestions to improve the paper. Sincere thanks also go to the journal editor Dr. Yanru Song for her careful editorial handling. We also greatly appreciate Jianxin Pei, Xin Zhang for their helps during the fieldworks and Ms. Wenlan Zhang for her assistance during the mineral analytical process. The final publication is available at Springer via https：//doi.org/10.1007/s 12583-018-0854-9.