国家重点基础研究发展计划973项目No.2014CB846003;国家自然科学基金重点项目No.41230103;国家地质调查项目No.1212011120284 Supported by the National Key Basic Research and Development Program of ChinaNo.2014CB846003,the National Natural Science Foundation of ChinaNo.41230103 and the National Geological Survey ProjectsNo.1212011120284