1. Department of Earth, Atmospheric, and Planetary Science; Massachusetts Institute of Technology; Cambridge Massachusetts USA
2. Department of Geology; Washington State University; Pullman Washington USA
3. Department of Earth Sciences; Boston University, Boston; Boston Massachusetts USA
4. Department of Geological and Planetary Sciences; California Institute of Technology; Pasadena California USA
5. Chengdu Institute of Geology and Mineral Resources; Chengdu Sichuan P.R. China