ORE FORMING SYSTEM AND COMPREHENSIVE GEO ANOMALY
Zhai Yusheng Deng Jun Cui Bin Ding Shijiang Peng Runmin Wang Jianping Yang Liqiang(China University of Geosciences, Beijing, 100083)
Comprehensive geo anomaly of mineral deposits is a main kind of ore forming indicator. After the discription of the ore forming system idea, the authors discuss the relationship between the geo anomaly and ore forming system and some concepts about the ore source field anomaly, the ore bearing fluid passageway anomaly and the ore trap anomaly are put forward. The authors present also the methods for studying the comprehensive geo anomaly. Based on systematic research on the gold deposits in Jiaodong district and copper deposits in northwest Jiangxi Province, four anomaly belts with more significant in finding of hydrothermal ore deposits are summarized, namely: (1)concentrated anomaly belt, (2)abrupt anomaly belt, (3)composited anomaly belt and (4) superimposed anomaly belt. At final, the authors emphasize that the carefully studies of ore controlling factors and mineralizing styles of prospecting area are the key problem in appraising geo anomaly and mineral deposit prognosis.