Structural Analysis And Prospecting Area Selection Of The Attapulgite Clay Deposit In The Linze County

With the continuous development of high-tech,the successful launch of a series of high-resolution satellite sensors and the continuous strength of computer software,the application of remote sensing technology is becoming more and more mature.Attapulgite clay deposit in Linze County occupies a considerable proportion in the mining of National Non-metallic deposits.Based on the interpretation criteria of remote sensing interpretation,combined with the ore-controlling factors and genesis of attapulgite clay deposit in Linze County,this paper uses remote sensing image fusion,enhancement and optimal index analysis method to extract the structure and strata of the study area by establishing interpretation criteria,and verifies the extraction results by means of metrological statistical method,field verification and chemical analysis.Finally,the attapulgite clay deposits in the study area were extracted and the metallogenic target areas were delineated.On the basis of detailed understanding of the previous data,remote sensing technology is used to process and analyze the image,so as to infer the tectonic distribution and rock distribution in the study area.Using human-computer interaction information extraction model,remote sensing data combined with ARCGIS,ENVI software and regional geological data,fault interpretation and prospecting favorable areas are delineated in the study area.Finally,the interpretation results are verified by field work and sample analysis and inspection.In the process of remote sensing image processing,in order to achieve the best visual effect in human-computer interactive interpretation,principal component analysis,minimum noise separation and Optimum Band Combination Analysis of Landsat 8 data are enhanced,and the optimum band combination of 754 bands is obtained.In the process of structural interpretation,in order to make better use of topographic and geomorphological factors to assist interpretation,surface analysis of image is carried out on the basis of traditional DEM digital elevation data interpretation,which makes the topographic undulation more obvious.Combining with geological data and remote sensing images,two metallogenic target areas are preliminarily delineated.According to the strong correspondence between the thermal infrared reflectance spectral characteristics of rocks and their SiO₂content,the SiO₂ content in the study area is calculated by using SiO₂ inversion method,and the SiO₂ content inversion map is obtained,which is further accurate for the metallogenic target area.X-ray diffraction analysis of borehole data collected in the field shows that the mineral composition and mineral content are obtained,and the results are basically consistent with the interpretation results...