Manuscript received January 24, 2019; accepted March 4, 2019. Date of publication March 28, 2019; date of current version April 17, 2019. This work was supported in part by the National Natural Science Foundation of China (41701500, 41601440, and 41601354), in part by the Natural Science Foundation of Hunan Province (2018JJ3641), in part by the Hong Kong RGC (PolyU 152201/17E), and in part by the Early-Stage Research Start-up Grants funded by Central South University (502045001 and 506030101). (Corresponding author: Yuelong Xiao.) Z. Miao, Y. Xiao, L. Wu, and J. Li are with the School of Geoscience and Info-Physics, Central South University, Changsha 410083, Hunan, China, and also with the Key Laboratory of Metallogenic Prediction of Nonferrous Metals and Geological Environment Monitoring, Central South University, Ministry of Education, Changsha 410083, Hunan, China (e-mail:,zelang.miao@outlook.com; yuelong_xiao@csu.edu.cn; awulixin@263.net; 273300175@qq.com).