1. State Key Laboratory for Mineral Deposits Research; Nanjing University; Nanjing China
2. Institute of Geophysics and Geodynamics, School of Earth Sciences and Engineering; Nanjing University; Nanjing China
3. Department of Geoscience; University of Calgary; Calgary Alberta Canada
4. Department of Geology; University of Illinois; Urbana-Champaign Illinois USA
5. Institute of Geophysics; China Earthquake Administration; Beijing China