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Study On The Ore-prospecting Model And Prediction Of Non-ferrous Metal Ore In The Erlian-Abagaqi Region, Inner Mongolia

Posted on:2013-01-16Degree:DoctorType:Dissertation
Country:ChinaCandidate:W T ZhaoFull Text:PDF
GTID:1110330371982235Subject:Geophysical Engineering
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The Inner Mongolia Erlian - Dongwuzhumuqinqi metallogenic belt is one of themost important copper-polymetallic deposits with concentrated distribution in China,which has the characteristics of multi-minerals resources, multi-polygenetic types,and the ore-forming geological condition is superior. The Erlian - Abagaqi region isthe important metallogenic belt of nonferrous metals such as W,Mo,Cu oreconcentration area. Based on summarizes,analyzes and study of previous dateinformation systematically in this paper, and on the basis of Regional metallogenyand metallogenic forecast theory, the Region mineralization geology background andmetallogenic regularity of the area are studied. A typical ore deposits is optimallyselected and research has been carried out on its Metallogenic model andMineralization geological condition; On this basis, delineated the Forecast area ofintegral metallogenic element as W,Pb,Zn,Ag,Ni. Utilized The predication theoriesof similar analogy to extract the forecast elements, used the deposit model integratedgeological information forecast method for mineral resources volume forecasting, atthe same time builded the preliminary ore-prospecting model in this area. Thisresearch has important theoretical significance and application value as well asprovide an optimizing method used for mineral exploration and deposits prospecting.Erlian - Abagaqi regional is located in southeast continental margin of SiberianTectonic between Dongwuqi - Zhalantun volcanic passive epicontinental and Erlian -He Genshan Tectonic plate jointing strip, which south is the northern part of the NorthChina Craton continental margin Xilinhot volcanic passive epicontinental. In theMesozoic Era, This area belongs to the western edge Daxinanling volcanic magmaticbelt of western pacific structure territory.The category of non-ferrous metal deposits (point) in the research area mainly onMo,W,Cu,Zn,Pb,Sn,Ni and Ag polymetallic deposits, and genetic type mainlybelongs to hydrothermal, with a small number of porphyry and skarn-type. From thedistribution characteristic of minerals, non-ferrous metal deposits are mainly locatedin northern research area, and distributes relative concentrated. Tungsten Mine, molybdenum Mine, copper Mine are mainly distributed in the area of Tsagaan-Ovoo,Wulandele in northwest of study area. Lead-zinc-silver deposit are mainly distributedin the area of Bayantuga Sumus - Uli Jeter obo in northeast of study area.At present the large scale ore deposit discovered mainly on Tungsten Mine,Molybdenum Mine with hydrothermal genetic type, and associated with Cu,Pb,Znelementary substance. The most representative types of ore deposit are as follows:The Ulan Deleur copper molybdenum mine and Wurinitu Tungsten and molybdenummine. The Wurinitu Tungsten and molybdenum mine Causes in Lower Cretaceousfine-grained Adamellite in the deep earth according to the ore deposit in the time, thespace, the origin of mineralization. Based on analysising the spatial distribution ofockmass,Alteration types,mode of occurvence of ore body, the Wurinitu Tungstenand molybdenum mine genetic type mainly on hydrothermal, with a small number ofporphyry-skarn-types. The Ulan Deleur copper molybdenum mine is a type ofhydrothermal - porphyry genetic ore deposit, and mainly on porphyry genetic ofmolybdenum mine, with which the metallogenetic epoch is the Lower Permian epoch.The majority Pb,Zn,Ag deposits are Co - associated deposits, also there are someCu,Pb,Zn Co - associated deposits and Cu,Co,Ni Co - associated deposits. Thegenetic types of those ore deposits are hydrothermal, contact metasomatic and so on.The Gao Erqi Silver lead zinc mine is a classic study of ore deposit in the researcharea. The ore body is mainly controlled by The Devonian loach River groupSandstone member (laye) and Near East - west normal fault. The Ore-bearinghydrothermal has the selectivity both to the Ore-bearing rocks and the Ore-bearingfissures. And the Hanatumiao nickel ore deposit is a classic study in the research areain the ultrabasic rocks of Devonian, which is a magmatic type of Liquation deposits.In the base of systematic summary of regional metallogenic regularity, based onthe conditions of typical deposits'formation. Using methods of comprehensiveinformation prediction of deposits'model, resources reserves of Mo, W, Pb, Zn, Ag,and Ni are predicted in this paper in the study area.Based on the study of regional geology background,region geophysics field,regional geochemistry field's characteristics as well as various typical ore deposits mining area geology, Geophysical and geochemical anomalies characteristics, andCombined with the research area of metallogenic regularity and The genesis of thetypical ore deposit,ore-forming geological conditions, established the ore prospectingmodel in the area of Ulan Deleur Cu-Mo deposits,Wurinitu W-Mo deposits,Gao ErqiAg,Pb,Zn deposits,Hanatumiao Ni deposits.
Keywords/Search Tags:Erlian - Abagaqi region, Regional metallogenic regularity, Characteristics of deposits, Metallogenic predition, Models of ore-prospecting
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