国家自然科学基金资助项目41402052;基本科研业务费资助项目J1602;中国地质调查项目编号:1212011120117和1212011120115的成果.This study is financially supported by Projects of National Natural Science Foundation of China41402052;Geological Sciences Research Fund of Institute of Geology,Chinese AcademyJ1602;China geological survey1212011120117,1212011120115