Study Of Multiple Metallogenic Information Prediction Of The Makeng Iron Polymetallic Deposit Peripheral In Southwestern Fujian

In the Gobi desert, volcanic rock, prairie vegetation, glacial soil, clay loess, nappe structure and other areas, shielding and attenuation of various types of overlay information on the underlying mineralization, there are many limitations in Metallogenic prediction and exploration methods in the forecast area by traditional methods, to carry out mineral predict the coverage area has become an international problem. Complicated tectonic of southwestern Fujian deformation patterns and intrusive and volcanic rocks of different periods, so that the region contains a wealth of Fe, Cu, Pb, Zn, Au, Sn polymetallic deposits (points), there are good exploration prospects. However, southwestern of Fujian nappe structure widely developed, coupled with dense vegetation, double coverage of nappe structure form alien rock series and vegetation restricts in-depth understanding of the geological conditions of the mineralization in this region, while increasing the area prospecting difficulty in deep and peripheral of "Makeng style "iron polymetallic ore.In this paper, using geology, remote sensing, geochemistry, geophysics and other data and integrated multi-metallogenic information, widespread use of modern new theories, new methods, comprehensive and systematic analysis of the various mineralization favorable information, on this basis, establishment of an integrated information prospecting model, in order to guide further exploration work.(1) Analysis of the research area the main ore formation, ore-controlling structure, host structures, establishment of research areas,"Makeng style" iron polymetallic ore deposit model, the metallogenic regularity, then guiding diverse mineralization information forecast, to provide geological basis for comprehensive information.(2) Using ETM remote sensing data of study area extract trunk faults, secondary faults, the cyclic structure; using ETM remote sensing data extract iron stained alteration information, hydroxyl alteration information of study area.(3) Execute Au, Ag, Cu, Pb, Zn, W, Sn, Mo, Fe, etc.9elements each single element anomaly and extracting combination abnormality of the study area. (4) Application of geochernical data, aeromagnetic data and gravity data for deduce acid rock and fuzzy evidence act metallogenic prediction.(5) Application GIS technology comprehensive analysis of the study area geology, geochemistry,geophysics, remote sensing and other mineralization favorable information, the establishment of a comprehensive prospecting model, delineation of prospecting targets, and conduct target drilling validation and evaluation.Revealed by drilling found reserves of magnetite bonanza in the northern target of Dapai iron polymetallic ore, verify that the integrated application of geological model, fuzzy weights of evidence metallogenic prediction, precision magnetic survey conducted validity "Makeng style" iron ore forecast in iron polymetallic ore outlying areas. Verify the validity that integrated application of geological model, fuzzy weights of evidence metallogenic prediction, precision magnetic survey carry out "Makeng style" iron polymetallic mineralization forecast in southwestern Fujian.