1. School of Earth Sciences Yunnan University Kunming China
2. College of Earth Sciences Chengdu University of Technology Chengdu China
3. Key Laboratory of Sanjiang Metallogeny, Resources Exploration & Utilization Ministry of Natural Resources Kunming China
4. College of Geophysics Chengdu University of Technology Chengdu China
5. Department of Earth & Environmental Sciences University of Kentucky Lexington KY USA
6. Geophysical Institute (GPI), Karlsruhe Institute of Technology Karlsruhe Germany