Lanzhou Institute of Seismology, CEA, 450 Donggangxilu Street, Lanzhou, GS 730000, China ; Kentucky Geological Survey, 228 Mining and Mineral Resources Building, Lexington, KY 40506, United States
Department of Earth and Environmental Sciences, University of Kentucky, 101 Slone Building, Lexington, KY 40506, United States
Kentucky Geological Survey, 228 Mining and Mineral Resources Building, Lexington, KY 40506, United States