[1]State Key Laboratory of Oil and Gas Reservoir Geology and Exploitation Chengdu University of Technology Chengdu 610059 China;
[2]Institute of Sedimentary Geology Chengdu University of Technology Chengdu 610059 China;
[3]College of Earth Sciences Chengdu University of Technology Chengdu 610059 China;
[4]Fifth Geological Exploration Institute of Heilongjiang Province Harbin 150000 China;
[5]Heilongjiang Geological Science Institute Harbin 150000 China;
Geochemical characteristics; Prospecting direction; The Greater Xing''''an Mountains; Heilongjiang Province;