| The research area is located in the middle part of west tianshan mountain,eastern Awulale.Administrative division belongs to xinjiang hejing county to administer.Boluokenu Paleozoic island arc belt(?)and ili block(?)near the border,Tectonic activity is strong and has the characteristics of multi-period activity.The research area is located in the middle part of the western tianshan mountains,and has a good prospect of copper and gold prospecting.There are carboniferous,Permian and Jurassic strata in the area.The stratigraphic divisions from old to new are as follows:lower carboniferous Dahalarangshan formation(dC1),akshak formation(aC1),upper carboniferous yishkirik formation(yC2),upper Permian tiemorik formation(tmP2),early juran badaowan formation(bJ1)and quaternary.Volcano-magmatic activity is the main heat source and mineral resources of mineralization in this region.The carboniferous ore-formation in this area mainly includes early carboniferous period of the Dahalajunshan period and late carboniferous period of the ishkelik period.The main lithologies are volcanic breccia,tuff and andesite.The ore body occurs near the contact zone between the andesite tuff and the carboniferous ying yundiorite.Yingyun diorite provides some mineral resources and sufficient power for mineralization.The tectonics in this area are mainly fault tectonics,mainly north-west,north-west-west,north-east.The NWW and NWW faults are the main ore-controlling structures in the area,which are closely related to mineralization.Mineralized bodies mainly exist near ductile shear zone and where ductile deformation is relatively developed,where multi-group faults intersect,where fracture tectonics intersect,where fault tectonics intersect favorable strata,where rock masses intersect,and where secondary faults are densely developed,should be analyzed.Three typical mineral deposits were selected as research objects in the study area.Copper and gold deposit ore-forming geological characteristics are summarized,and the area of 1:50000 regional geological survey and geophysical information and regional mineral comprehensive information research and analysis,the typical ore deposit are analyzed,and find out its ore-forming geological background,ore(change)characteristics and genetic types of ore deposit,and ore-forming geological conditions,summarizes the geological conditions to determine the genetic types of copper polymetallic deposit in the study area,and establishing ore-prospecting criteria and ore-prospecting direction is determined.The favorable ore-forming area is located at the border between the bolokonu negative magnetic anomaly zone and the yili positive magnetic field zone,which is consistent with the regional ore-controlling structure and the distribution of linear intermediate acidic rock mass.According to the gravity division,the study area belongs to the relatively gentle high gravity anomaly area of the xitianshan abnormal area,and the gravity gradient changes to 2.67 × 10~5m/s~2/km.The metallogenic activities are obviously controlled by faults,and the metallogenic conditions in the study area are extremely favorable,which is the most favorable position for regional metallogenic and precious metal.According to the measurement of 1:50,000 water system sediment,7 abnormal areas with good element anomaly cases were found.Through the spatial distribution of geochemical anomalies,the study area is divided into Yuximolegai Cu,Au,Pb,Zn,As,Sb,Mo,Cr and wangjiangdeke Cu,Ag,Pb,Zn,W and Cd enrichment areas,and it is expected to find valuable deposits in the enrichment areas.According to geological features,geophysical and geochemical anomaly information,regional metallogenic features and mineralization characteristics of typical deposits in the area of Yuximolegai Daban.The research area is divided into three metallogenic prospect areas,level 1 including(?)prospecting area 2,level 2(?)prospecting area 1.Through the evaluation of prospecting potential in prospect area,two target areas for copper and gold prospecting were identified. |
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