The Application Of Geophysical Characteristics In The Central Tun Area Of Inner Mongolia,Xingan Meng

High precision magnetic method is one of the important geophysical methods,and is widely used in the strategic mineral prospecting project.The application of high precision magnetic data can directly or indirectly solve the relevant geological problems and conduct mineral exploration more effectively.The interpretation of the data of high precision magnetic survey is the necessary step and critical link,and should be taken seriously.High precision magnetic survey interpretation is based on the magnetic anomaly characteristics and geological characteristics,ore rock magnetic and bricks and geochemical data,the correct judgment of magnetic anomaly caused by the nature of the geological body,and determine its space location and geometry parameters,at the same time combined with geological law,corresponding conclusions on the geological structure and mineral distribution,for the next step in the geological prospecting information of magnetic geologic body.Research area located in Inner Mongolia geosynclinal fold hinggan mountains area,the greater hinggan mountains geosynclinal fold system,according to the geological survey of the Inner Mongolia autonomous region in the division of tectonic units,should belong to the Inner Mongolia-the greater hinggan mountains geosynclinal fold system in the southeast margin of southeastern Mongolia-late variscan fold belt.Area on the exposed a wide distribution of strata,from old to new in palaeozoic group of Permian middle longevity valley group(P2sh),Mesozoic Jurassic system in full,head of the bayan obo group(J3m),mani spit(J3mn),high white tone old group(J3b),lower cretaceous mailer figure group(K1m),Cenozoic quaternary holocene(Qhal),etc.The area of the intrusive rocks is widely distributed,and is mainly based on shallow granite porphyry,and is produced by rocks and rocks.The second is the formation of the granites of the small inventer and the dendritic output,the quartz diorite,the diorite,and the porphyry.The invasion of rock was formed in the Jurassic and cretaceous period,mainly by the Jurassic period;The structure of the study area is more complex and the main tectonic line is north and north east.The structure is based on fracture,the fold is the second,and the volcano is developing.In this paper,using 2007 to 2009,the Chinese administration of geological mine geological research institute in the center of the hinggan league of Inner Mongolia tuen mun area measured magnetic survey data,the first by 1,50000 the ground high-precision magnetic survey,find out the basic characteristics of magnetic field distribution in this district,to provided the basis for the division of the main fault structure,the geological mapping,division of geological boundary has a guiding significance.On 1:50000 high-precision magnetic survey found that the value of the magnetic anomaly of 1:10000 high-precision magnetic survey work,further delineating the distribution of magnetic anomaly and magnetic anomaly.Of typical magnetic anomaly interpretation,determine the spatial configuration of the magnetic body,the magnetic anomaly area targeted for the magnetic parameters of rock ore samples,determination of the magnetic susceptibility(kappa)predominate.In this paper,the magnetic properties of rock and magnetic anomalies are analyzed and studied.The specific work and results are as follows:1.The principle of processing and conversion of magnetic anomalies is described.2.To handle and transform the magnetic anomaly,and to analyze the basis situation by analyzing the method of extension,trend analysis,etc.By means of various boundary identification techniques,the fracture distribution is predicted.3.By comparison with the measured data interpretation results,found in several achievements of mineralization and geochemical exploration,remote sensing,combining with the mineralization and the tectonic magmatic activity and the ore-forming parent rock distribution,summarizes the polymetallic metallogenic characteristics in the study area;4.According to the distribution of magnetic anomaly,combining geological and geochemical results,four prospecting target areas were located in the research area.