Mineralization And Alteration Information Extraction And Prospecting In Western Alpine Mountain Forecast

There are few population, unsubstantial economic foundation and bad entironment in Western high and cold mountain area,but the natural resource is so abundant(containing much ore resource).The cost is high and the efficiency is low if we survey the resource using common geological method.Remote sensing ore-finding information is the information about geological phenomena related to mineralization in the remote sensing images. Usually, the information includes ore-forming geological background, ore control factors, rock alterations information, etc. Selecting Han Ji Ga area of Sinkiang as research area based on the analysis of TM and ETM secondary planet image data about this area (We mainly selected the TM secondary planet image data because of the disturb of cloud shadow) ,the author studied the geological phenomena related to lead and zinc multi-metal mineralization, and extracted mineralization information from the TM secondary planet images by using the software of PCI8.2During the research, the TM image data were firstly pretreated. And the related metal mineralization of the selected area(Han Ji Ga area)were investigated on the spot. The related image features of various geological information contained in the TM image were defined. Then the statistics and analysis and principal analysis of the image data about the studied area were performed. the mineralization information contained in the images was extracted. Besides, the data-amalgamating processing of the TM images has been done, the images with higher degree of sophistication resolution obtained. Based on these images, the interpretation and analysis of geological phenomena was performed, the information of stratu-rock units and fracture units obtained.Finally, all the remote sensing information obtained together with the existing geographic data, geological and mineral data were synthetically processed, andore-finding forecast was made, 19 ore-finding forecast zoneswere confirmed. It shows that the forecast zones is good afterfield examination.