Beishan Region Metallogenic Prediction And Target Preferred

The Beishan area locates in the join of three structure unit, with the better geological and structural metallogenic conditions and is the famous multi-metal metallogenic belt because it had experienced long and complex geological evolvement course. By investigation and research, the author gets the progresses as follows: 1 Performing the regional metallogenetic prognosis by 'material field-energy field-spatial field'method for the first time in the Beishan. Based on the GIS graphics database, geochemical database with scale 1 to 200000 and the structure stress field, the dissertation performs the regional metallogenic prognosis by GIS and 'Three-fileds'methods, and puts forward 2 first order ore-finding prospective areas (i.e. Gongpoquan-Sandaomingshui area etc.)and 1 third order c (i.e. Dahongshan-Jiangjuntai area etc.). 2 Based on the up-to-date research results of geological information processing and characterizing on remote sensing data, the dissertation brings forward the techno-flow chart and the method of extracting synthetical alteration information from ETM data, and extracts the alteration information from the 3 first order ore-finding prospective areas according to the physical geography conditions of study area, such as rare plant cover, baring rocks, hard condition with gobi and desert etc., By this method, it is useful and helpful to focus on the interested and favorable ore-forming areas within the ore-finding prospective areas. 3 By use of extracting the alteration information from the ore-finding prospective areas, chooses seven interested and favorable ore-forming areas, which need investigation and check, in order to ameliorate the extracting alteration information and direct the searching mine. 4.According to rare plant cover, baring rocks, gobi and desert etc., we should make use of the the method of extracting synthetical alteration information from ETM data, in order to immediately appraise the the method of extracting synthetical alteration information form ETM data.