| The Shartas lead-zinc deposit in the Wuqia County is located in the northwestern margin of the Tarim Basin,the Mesozoic continental margin of the Meadu Basin and the Cenozoic continental basin are belong to the stratified lead-zinc metallogenic belt in the northwest of Tarim.The Fe-Cu-Pb-Zn-Sn-bauxite belt in the Kuokeshaling area is characterized by a good prospecting prospect.Through the study of regional metallogenic geological background,ore-controlling factors,metallogenic regularity,anomalous characteristics of remote sensing and typical mineral dissection,based on the obtained geological data,the remote sensing prospecting model is established according to the metallogenic geological background of the dominant mineral resources and the extraction of remote sensing prospecting marks.So as to verify the remote sensing prospecting model,and delineate the remote sensing prospecting area.In this paper,taking the Shartas in Wuqia County of Xinjiang as the research area,and the data of the existing regional geological and mineral survey project are mainly based on the study of the Shartas carbonate-fine clastic rock-type lead-zinc deposit,ASTER and landsat-8 OLI based on the image data,and comprehensive research,the mineralization of carbonate rock fine clastic lead-zinc deposits is closely related to ore formation,fracture structure and magmatic rocks,and the relationship between mineralization related wall rock alteration and mineralization are comprehensively studied,with the help of ASTER image data,comparative analysis of the typical mineral spectrum characteristics of the study area,geological characteristics and spectral characteristics of the typical deposits and the Shartas area were used to extract the remote sensing information,so as to establish the remote sensing prospecting model and information extraction in the study area,based on the systematic analysis of typical deposits and regional geological background,the linear structure of the study area was systematically interpreted by using the landsat-8 OLI remote sensing image data,with the help of geographic information system in the research area and the mineralization is closely related to the remote sensing prospecting information(lithology,structure and alteration)extraction and integration,finally in the study area delineated prospecting area,in order to lay a foundation for the deployment of regional mineral exploration.The main results and understandings are as follows:(1)According to ASTER image data and existing geological mineral exploration and prospecting for new results,to determine the main mineralization and alteration types of Shartas lead-zinc deposit,research on information extraction of alteration by ratio,principal component analysis,the result showed that carbonation of high value exposed area and existing carbonate strata with high degree,and at the same time the iron stained high value area agree with a higher degree of prospecting as the best indicator,as remote sensing prospecting model.(2)Based on Landsat-8 OLI image data processed by graphics fusion,the preliminary geological interpretation of the basic geological information is carried out in the Shartas area.Through field investigation,the interpretation marks are further supplemented and corrected.Among them,the NW trending structure is the most developed in the region.The secondary faults are mainly NE trending and near North South trending,and these secondary faults are inclined to be more favorable for mineralization.(3)Unified analysis of remote sensing and traditional geological data,various information layers are integrated in the ArcGIS platform,the study area was obtained by the alteration and construction density map of regional remote sensing prospecting information,based on the geological features and the results of previous studies,delineated two prospecting area.The results prove to consistent with the second geological team of Xinjiang Bureau of Geology and mineral resource's test broadly,in Shartas area of the Wuqia County. |
PDF Full Text Request