[1]State Key Laboratory of Geological Process and Mineral Resources, China University ofGeosciences, Beijing 100083, China;
[2]Institute of Geological Research, Shougang Geological Exploration, Beijing 100144, China;
[3]College of Geological Sciences and Engineering, Shandong University of Science and Technology, Qingdao 266590, China;
[4]China Aero Geophysical Survey and Remote Sensing Center for Land and Resources, Beijing 100083, China;