ANALYSIS OF GEOLOGICAL CONSTRAINT FACTOR ON COPPER POLYMETAL METALLOGENIC ZONES IN NORTH REGION OF CHIFENG

摘要

The controlling of ore-forming processes of the copper-polymetal metallogenic zones in north region of Chifeng, Inner Mongolia has been investigated via the regional tectonics, the strata and paleogeographical setting and mineralization, and the regional magmatism and mineralization. The following results were pointed out that due to the differential effect of the above three geological factors the mineralizations are mainly related with Yanshanian magamatism, at the early stage of the Yanshani-an magmatism the mineralization (in weet Chifeng) is mainly represented by Cu, Au deposit resulted from anatexis, and at the late stage (in east Chifeng) is dominated by Sn, W polymetal deposit resulted from the dissemination of upper crust materials.