| Gold plays an important role in the strategic economic foundation of every country in the world.The exploration and development of gold mines has great importance to every country.Since the founding of our country for gold exploration development work has been not relax.The several large gold deposit that have been found in which in the Jiaodong peninsula of Shandong and Inner Mongolia region,Yunnan Honghe region.Gold deposit causes mainly related to the magmatic activities of metamorphic-hydrothermal type gold deposit is given priority to.Some areas gold mine is given priority to with red clay type gold deposits,such as Yunnan Honghe.Several gold deposits that are closely related to tectonic activity have also been found in the fault zone of ganze-litang in Sichuan province,including the large karla gold deposits.Ganzi-litang fault zone,which is large in scale,which is an important metallogenic belt in China.It is Bayankalla,Songpan and Kala Kunlun metallogenic province,Sanjiang metallogenic provinces(fold belt)boundary fault,fault zone itself is Ganzi(ocean basin conjunctive zonet)Au(Cu,Ni)metallogenic belt.Through decades of research,make great progress of the region's gold metallogenic geological background,but in the research on the laws of the prospecting method and in other parts of domestic(gold deposits in the Jiaodong peninsula in Shandong),diversity in the method test research work might slightly insufficient.The main object of this paper is the gold deposit in the north section of the Ganzi-Litang fault zone.By analysis characteristics of regional geological,structure,ore body and ore characteristics than sum up the special geological background and metallogenic regularity of gold deposits in the study area.Thus on the basis of the summary and analysis of geophysical and geochemical characteristics,the prospecting regularity of gold deposits in this area is explored.Based on the research of the two spots in the study area,found that on geological characteristics of mineralization rocks are mainly concentrated in Triassic Carl and tile can group based in ophiolitic melange,ore deposit distribution location and fault or transverse shear zone,and closely related to tectonic activity,at the same time through geophysical prospecting method,found in ore formation of low resistivity and high polarization rate abnormal electrical method and beaded is cascade with bouguer gravity and magnetic anomalies,the geochemical aspects are characterized by abnormal gold antimony arsenic element concentration.Among them,the gravity and magnetic exploration effectively marking out the distribution of tectonic position,for delineating the prospecting target areas have obvious effect,and on the basis of the mineralized bodies of low resistivity and high polarizability electrical characteristics make electric prospecting with the geophysical prerequisite,and the combination of geochemical enrichment of gold,arsenic,antimony element,can effectively partitioning key anomaly area,concentrated prospecting target areas,and then through the ground and trenching,drilling geological work,effective goal of rock mass.The whole science of prospecting method from the characteristics of ore body itself,using the corresponding methods according to different characteristics,for the future in the area of gold deposit exploration and scientific prospecting geological exploration Suggestions,guide gold ore-prospecting work. |
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