| Structure, Magmatic activity, Stratigraphy, Litho-palaeogeography, Metamor- phism and Regional Geochemistry are the basic factors that controlled mineralization. Geological phenomena occurred in mineralization, such as hydrothermal alteration zone, elements and minerals'assemblage and so on, are effective signs of prospecting, and wall-rock alteration is an important indicator. Due to the metallogenic hydrothermal process, the vast majority of endogenetic deposit have wall-rock alteration phenomena, and the scope of alteration is much larger than that of deposit. In addition, the spatial distribution of alteration information is also controlled by structural and other mineralization, those are the geological basis for mineral prospecting through alteration information.Taken the regional structure, mineralization zone and mineralization as the general background of the ore-forming, and determined the long-term metallogenic based on the background by remote sensing. Large-scale structures (for example, long-term activity fracture, vertical and the border fracture, the fractures at the top and on the edge of the annular structures, etc.) play a role in ore controlling and ore leading, while inclined fault, annular and radial fractures etc play a role in collecting nodules (ore-containing). Taking the ore field forecasting and depositing as the main target, and these targets can be found on remote sensing images. Especially the alteration zone enriched with ore-forming elements may turn out to be dark anomaly zone (or light-colored anomaly zone) on remote sensing image, which is an important symbol of prospecting. The fundamental principle is that the ore-forming elements content is small while the obvious effect spectroscopy in the spectral curve can produce abnormal, rather than forming the felsic material. The content of the felsic material is large, however, it can't produce abnormal in the spectral curve but only the background field. Many rock spectrum test data prove that the ions in alteration rocks, such as Fe3+, CO32-, OH-, all of this have obvious reflection or absorption bands in the visible-infrared spectral region. However, the main chemical constitue-nts (Si, Al, Mg, O) that mainly composed of rock-forming mineral do not possess the spectral features mentioned above. That's the physical basis that alteration information can be extracted by remote sensing technology.Dongwuzhumuqinqi-mandu-Inner Mongolia region locates in the south of the Siberian plate. In the south of this region, there is the Kalamaili-Pingdingshan-He- genshan plate suture line. From the Paleozoic to the Mesozoic, frequent geotecture and multi-period magmatic intrusion activity provide good geological environment for ore-forming. Long-period of tectonic evolution, with a view of multi-period, multi-type tectonic deformation, magma intrusion, volcanic activity, and costacking with the coupling constituted a good ore + structure + magmatic hydrothermal meta- llogenic geological environment in current concentration area. The main ore-hosting rocks are the upper series of the Devonian Angeeryinwula formation (D3a), the upper-middle series of the Devonian Taerbagete formation (D2-3t) and the Upper Carboniferous-Lower Permian Baoligaomiao formation (C2P1b). In this region, firstly the NE, NEE fault structures control the distribution of the ore belt. They connect deep and shallow crustal structure and are to be named ore conducting structure. Secondly, Branch NW and NE fault structures control the distribution of deposits (body). Finally, in the NW-NNW linear and arc fault zone, the ore-contain- ing faults, whose distribution is different from main structure, are formed. Meanw- hile, metallogenic belt is shaped with the multi-period hydrothermal filling metaso- matic ore-forming process and kinds of surrounding rock alteration. Hercynian Granitoids, granodiorite and Yanshanian, Indosinian adamellite, biotite moyite are closely related with mineralization in this area. The main alteration types in this region are silicification, sericite and chlorite, and kaolinite,and carbonate and limonite, and pyrite, and galena, and mineralization, such as brass.According to the study on the tectonic interpretation of study area, combined with regional geological data, and utilized the the ratio opertaion, principal component analysis (PCA) and spectral angle mapping (SAM) comprehensively to determine the abnormity lower limit in analysis of the known ore occurrence, which improved the reliability of alteration of information distribution. The results show that the strong alteration occurs in middle and mid-east of the studying area, its stretching direction being northeast. Sludging and propylitization are the most prominent, silicification are scattered throughout the region, iron alteration is concentrated in the middle. Alteration information is closely related to Hercynian, Yanshanian rock ,and mainly distributed in substantial ore rock. Alteration information is mostly controlled by regional tectonic. Ore-host strata in this area provide a large number of rock-forming elements. Compared with the geochemical anomalies distribution image in this area, the alteration information extracted from remote sensing anastomoses with it. It shows that extracting information using remote sensing technology is reliable.According to the results of alteration information extraction, combined with the characteristic of liner ring structure and the distribution of rock mass, on the basis of existing geological information, we summarized the ore-forming geological prospe- cting laws and signs of typical deposit, and built a remote sensing information extraction mode. The prospecting model is based on the results of regional geology mineral research and the summary of prospecting principle, which matches the metallo-genic model and can fulfill its required result. Using this model reasonably to predict the mineralization in this area will play a guiding role for future mineral exploration process.
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