Research On Geology And Geophysical Prospecting Model Of Deep In Ganzhong Iron Ore Field

Ganzhong iron ore field is important for iron ore type in southern China. In this paper, we rely on the resources prospective study of Ganzhong iron ore field and subsequent one of mine resource for iron ore special operation as the research basis,study original geology and geophysical comprehensive information in Ganzhong iron ore field.It is necessary for finding out the origin of deep deposit and strengthening different geophysics technologies in mineral exploration.In this paper,we study the geologic and geophysical survey of Ganzhong iron ore field, summarize the regional geological background and mineralizing setting and the metallogeny.By means of the ground high-precision magnetic survey and borehole magnetic measurement, we march the data processing, inversion and interpretation to every method. Through the human-computer interaction 2.5 D, 3 D modeling inversion, put forward prospecting model of Nihe iron deposit. After the study, this paper shows the practice and cognition as follows:(1) We summarized geological background of mineralization and metallogeny of Ganzhong iron ore field, established metallogenic model of Yang Jiaqiao iron ore field according to predecessor's research achievements. Ganzhong iron ore field belongs to south China ji low greenschist facies sedimentary metamorphic iron ore magnetite quartzite type ferrosilicon.(2) We managed the high-precision ground magnetic survey data with geoch-emical pole and upward continuation and trend surface in the study area.We can get ?T trend surface and profile in plan, continuation figure of 100 meters, 300 meters, 500 meters. By analyzing the data processing, maps and other data, the system partition and explain regional, local magnetic anomalies.(3) By studying of geochemical characteristics in the study area, show that Fe substance sources of Ganzhong iron ore field for shell source involved in the formation of the magma formed by the fractional crystallization, for Ganzhong iron-ore field deep prospecting model to provide guidance and basis.(4) By researching on the Ba Qiu Yuan study area in the study area 449 line and 387 line in the middle section of magnetic anomaly and human-computer interaction 2.5 D modeling inversion,and interactive 3D modeling inversion of high-precision gro-und magnetic of Yang Jiaqiao-Chang Xi,we can get the locat ion of the ore body, shape and characteristics. Finally through the study area ZK1203 borehole magnetic survey to find out the well blind magnetic ore, fo recast bottom of blind-ore, determine the orebody shape, occurrence, size and spatial location and prediction.(5) By Analysising and summarizing the predecessors' Ganzhong iron ore field metallogenic geological theory and the metallogenic model, on the basis of Ganzhong iron ore field are discussed location prediction of deep geophysical prospecting method best technology combination, probes into the Ganzhong iron ore field deep comprehensive prospecting model. Guide by metallogenic theory, Combine with geological, geochemical, various geophysical methods, physical properties and parameters of the comprehensive interpretation of the deep concealed mineral and blind ore prediction and location is the most effective prospecting model.