| Niu Ma tang ore block is important part of JiaMa copper polymetallic depositwhich located in north east of the Guo Sha ru ze peak in east Gangdise,and themetallogenic belt is a very important Prospective areas which belongs, Is also one ofthe most abundant areas of copper resources in our country.in2007to the end of2010.there are eighty four drill holes were carried out in diggings, Formed a densenetwork in exploration engineering, at the same time on the basis of the detailedcatalog record data Covers the proven hornfels skarn orebody in the drilling formation.they conclude ore bodies, exploring porphyry orebodies arrangement by drilling, butthe exploration for the purpose of rapid breakthrough in reserves, exploration linelayout have Strong artificially subjectivity; Ore bodies are contoured grade, there isno scientific comprehensive considering the geological factorsIn order to discuss the spatial distribution of different geological elements in oreblock, such as morphological occurrence characteristics, and the relationship betweenthe two geological elements, the author tightly integrated drilling logging Fieldgeological filling the basic facts such as select ore block fifty-seven drilling forrelated research, according to the selection of Niu Ma tang ore block hole distribution,it can be divided into three east-west and five south-north, a total of eight solidanalytic stripe, collection stripe edge drilling logging reflect geological factors, fromthe three dimensional full consideration on the adjacent borehole profile and therelationship of the prospecting line section through geological software to establishthree-dimensional image resolution, the greatest degree of reducing geologicalelements even degree of freedom, and cognitive geological factor for the whole shapeattitude scaleBased on drilling logging data of eight stereo ribbon image resolution,combining mining area geological factors, roof contour map, floor contour map andthe thickness contour map, to achieve more visualizations of various geologicalfactors in mining area ration system The mining area through single factor analysisfor relationship between mining area geological elements analysis foundation, to determine the relationship of geological elements Magmatic emplacement direction ofore fluid migration direction and form the occurrence of the geological factors ofsystem more comprehensive study of the scaleThrough the comprehensive analysis of geological characters of the deposit, andeventually to explore the related problems constraints of ore deposit geologicalcharacteristics, namely, Niu Ma tang ore block ore-forming process, ore bodiesmetallogenic position and exploration directionThrough comprehensive analysis, parsing the maps we can obtain that NiuMatang ore block intrusive rocks along the distribution of interlayer fracture zon ofthe strata occurrence or Lin Buzong group formation and Duo Digou group formation,development of small,but originated from interlayer fracture zone of the Lin Buzonggroup formation and Duo Digou group formation of intermediate-acid intrusive rocks,for skarn type and hornfels type ore bodies metallogenic provide heat, power andore-forming elements. Niu Matang ore block of skarn type upper Jurassic Duo Digougroup marble and the hornfels Lin Buzong group of lower cretaceous of the contactzone between the layers of decollement and its secondary folds, surface layer, profileform for irregular lamellar or thick plate. Niu Matang of Jiama ore block hornfels isskarn orebody of roof, and also low-grade hornfels type of copper molybdenum stoneore rock directly. Comprehensive analysis of the Niu Matang ore block ore body canbe seen that Niu Matang ore block development period of near ore wall rockalteration，wide range of hydrothermal alteration, and the scale, and the fracture，therefore，in the depth and the periphry of Niu Matang ore block，porphyry copper oreprospecting potential is tremendous... |
PDF Full Text Request