The Application Of Remote Sensing Technology In The1:50000Regional Geology And Mineral Resources Survey,Wuqiliketawu, Xinjiang

Wuqiliketawu area is located along the middle of Altai mountain chain, In thealtai Paleozoic plutonic magma arc, metallogenic conditions are unique, metallogenicpotential is tremendous. However, due to natural climatic conditions are poor, thetraffic is extremely difficult to1:50000regional geological survey work caused greatdifficulties, is still a blank area of Geology and Mineral Resources of the investigation.Based on1:200000and adjacent area1:50000area ore adjustable results data as thefoundation, this paper using remote sensing technology, uses ENVI, ERDAS, PCI andother data processing software, remote sensing data preprocessing the original work is1:50000geological interpretation of remote sensing alteration information extractionwork and provide the basic data. The research results can provide reference forrational deployment of field focus, and consequently reduce the workload of the field,shorter working hours, lower capital investment, effectively improve mappingaccuracy and quality.In the process of Remote Sensing1:50000geological mapping of Wuqilitawuarea, the SPOT5data (resolution2.5m) and ETM+data (multiband), using thegeometric correction, image Mosaic and linear contrast stretch, resolution fusion anda series of remote sensing image enhancement processing method, expand the contrastbetween the different geologic body, improve the degree of remote sensing imageinterpretation.According to remote sensing image of lithology, geological parametersand geological structure of identifiable degree, to remote sensing image according tothe degree of interpretation in the study area is divided into three levels.Using theprinciple of remote sensing image visual interpretation methods, divided into thiszone9stratigraphic mapping units and3intrusion mapping unit, according to theresult of field route geology survey, establishing and perfecting their marker of remotesensing, processing method with the help of computer aided interpretation at the sametime, develop the Wuqiliketawu1:50000remote sensing geological interpretation chart, interpret results and precision meet the requirements of the1:50000geologicalmapping work.Using "to interfere with the abnormal principal component threshold technology",to extract the "alcohol" in the study area and dye "iron" alteration information.UsingArcGIS platform advantage in data integration,1:200000geochemical anomalies andalteration information in the study area, structure information of the overlay,combined with metallogenic belt in the analysis of the typical ore depositore-controlling factors, delineated the three prospecting target areas, indicate thedirection for the next step prospecting work.