Study On The Geological Background And Metallogenic Regularity Of Yining Block

YiNing block is an important part of the Central Asian Orogenic Belt(CAOB).Its structure is special and complex and its geographical location is special.In recent years,with the great breakthrough in the prospecting of the YiNing block,the study of this area is becoming more and more deep.However,because of the complex structure,the geological evolution and metallogenic law have produced some big disputes,and then the latest development is the latest.After summarizing the information system and field work,the following aspects are systematically studied.Through investigation and integrated integration of Devonian,Carboniferous,Permian strata cleaning,distribution of intermediate acid intrusive rocks,linear tectonic distribution,geophysics and geochemical background in the West TianShan area,the YiNing block is to find ore bearing strata,optimize the favorable ore-forming rock mass,sum up geophysical and geochemical anomalies.The characteristics provide detailed and basic data for the work of metallogenic regularity and the optimization of new prospecting area.The research system clarifies the late Paleozoic,focusing on the Carboniferous system,the stratigraphic unit and sequence,the investigation of rock combination,the formation of the environment,and the study and search of ore bearing strata.The distribution,rock assemblage,evolution sequence,alteration and mineralization types of intermediate acid intrusive rocks in the study area were investigated,and favorable ore-forming rocks were selected.The distribution,structural properties,formation and evolution of the linear structures related to mineralization are investigated,and the control of mineralization is analyzed.The characteristics of the heavy and magnetic fields in the whole region are studied,the regional main fracture and its combination characteristics are analyzed,the volcanic mechanism and the possible hidden rock mass are determined,and the geophysical anomaly characteristics of the known mining areas are summarized.The geochemical data of Au,Fe,Cu and related elements in the whole region are studied,and the geochemical anomaly distribution characteristics of the known mining areas are summarized,and the geochemical anomalies of the metallogenic potential are screened out.The metallogenic geological conditions of the iron deposit,such as NiXingTaGe?Cha Gang Noel and SongHu are dissected,the metallogenic regularity of iron ore in the region is summarized,the ore prospecting model is built and the metallogenic regularity of the typical ore deposits is found,which provides a new theoretical basis for the future prospecting.In the study,we drew the latest geological map of 1:25,the aeromagnetic anomaly and the gravity anomaly map of the research area.After the integration of the investigation and data of the regional and key metallogenic areas of the YiNing massif,the ore bearing strata related to the mineralization are systemically arranged,and three metallogenic far scenic spots are delineated and five target areas are found,and the theoretical basis for the prospecting of the YiNing block is provided.