The Study Of Geological Conditions Of Copper Polymetallic Metallogenic And Its Prospecting In Big Board Area In Chifeng City Of Inner Mongolia

Volcanoes-subvolcanic hydrothermal deposit is in the late period of many times ofmagmatism and volcanic eruption or intermittent period, rising magma from deep crustcarry plenty of ore-forming material such as heavy metal compounds, because of the jet andunusually strong hydrothermal activities, under certain temperature and pressure conditions,fracture increased gas and liquid and the surrounding rock along the guide ore or betweengas and liquid metasomatism, changing its chemical and physical properties of ore-formingsolution, make its aggregation and precipitation in the form of compounds, formingvolcanic hydrothermal deposit.Big board copper polymetallic deposit is volcanic-subvolcanic hydrothermal type.Current research is not much for this kind of ore deposits in the area, this paper is based onsufficient field geological investigation and analysis of ore-forming geological conditions,the ore-controlling factors system research, determine deposit types, and establish themetallogenic model and prospecting in the south of greater hinggan mountains, the sectionsells for the future studies provide some indications of the same type of deposits.This paper is based on bahrain YouQi ZhaGanMu Aaron, chifeng city,Inner Mongoliafour regional mineral survey project,have found out the development and distribution ofstrata, structure, magmatic rocks in this area and stratum system is established; By means ofgeochemical analysis, combined with the distribution characteristics of regionalgeochemical anomalies found out the source bed; Through remote sensing and geophysicalcharacteristics analysis, using structural geometry, structural evolution history researchmethods effectively recognized the properties of geological body and its motion state,explained the relationship between structures and mineralization; Sufficient investigation ofgeology, petrology and geochemistry of the rock mass characteristics, tectonic evolutionand metallogenic prediction in the study area providing petrological constraints, as well asthe anlasis of the prospecting and potential in the study area.The papper has made the following achievements:1, according to the rock formation of Inner Mongolia autonomous region, and themeasured stratigraphic section data of the field work, the formation in the area is clean and14lithostratigraphic unit is established. The Permian formation is divided into the upper,middle, middle early, established by the Permian, Jurassic, cretaceous and quaternary stratigraphic system. Permian to fold basement, Jurassic, cretaceous and quaternarysedimentary cover.2, the main movements in the area in the tectonic are late variscan and yanshan,.Variscan in the Permian strata fold and strongly associated with acidic magmatic intrusiverocks and regional metamorphism, and form the tectonic zone is significant in the northeast tracks, formed the tectonic framework of the main body, it is late variscan magmaticactivity and yanshan period magmatic intrusion, volcanic action and the formation ofendogenous mineral has obvious control effect, also determines the distribution of the rockand volcanic formation.Yanshan movement, the main characteristic is breaking, uplifting of the earth’s crustand the magma activity. Associated with those, the mineralization is very intense,and it isone of the important endogenous mineralization in the period. Early yanshan movementinherited tectonic stress field of late variscan, late magmatic intrusion and faulting as themain form, form the north north east and north east to the long axis of the fracture andnorth east of distribution of volcanism volcanic chain.3,This papper has identified the six volcanic institutions and10crater, which is aMesozoic volcanic magma-the product of tectonic activity period. According to thecharacters of petrology and isotope geology determines the magma positioning age of136ma-142ma, and ree tracer principle was used to study the origin of magma.4, the research area of volcanic activity is one of the performance of magmatic activity,intense volcanic eruptions not only metallogenic time, even can destroy originalmetallogenic system, break volcanic activity weakened in the late of the volcano is the bestmetallogenic period, especially volcanic activity in the final stage which formed by themagma intrusion of subvolcanic hydrothermal mineralization is the most favorable time. Sovolcanic activity associated with volcanic hydrothermal ore-forming activities led to theformation of volcanic hydrothermal source material of metal and nonmetal deposit,volcanic fracture provides a channel and ore fluid deposition sites.5, through the comprehensive analysis of regional metallogenic model can besummarized as some space features when certain features of metallogenic tectonicmovement, magmatic activity and mineralization activities within a system consisting of"trinity" model, in the Jurassic tectonic-magmatic dome and volcanic apparatus, Jurassicvolcanic-intrusive magmatic evolution and differentiation with copper polymetallic or leadand zinc silver polymetallic mineralization and formation of ore deposits. 6, on the basis of geological, geophysical and remote sensing geological and mineralinformation,the study of metallogenic system in the area delineated the metallogenicclusters,in which based on the results of mineral check framed the prospecting target areas,and the in-depth analysis, summarized the region of ore deposit metallogenicore-controlling factors and prospecting marks, etc., and points out the further prospectingarea.