The Research Of Prospecting Methods Of Deep-penetrating Geochemistry

With the extraction method of the soil mobile forms of deep-penetrating geochemistry,this paper is to make experiments of the exploration of Shihongtan interlayer oxidation Uranium deposits in Xinjiang province,meanwhile,combined with the drilling exposure method,this paper is to test and verify the reliability of the extraction of soil mobile forms.On this account,by means of the distribution of plane and vertical space of the mobile forms elements,the abnormal migration modal of the interlayer oxidation zone sandstone Uranium deposits in the desert landscape area can be discussed.1)The sandstone U deposits of Shihongtan test area in Xinjiang province belongs to contained-Mo,Se,REE etc.interlayer oxidation sandstone type uranium deposits.2)Th/U ratio of the ore-body is generally less than 2.5,its ratio of the pay-rock and the coal seam is generally greater than 2.5.The Th/U value of ore-body is below 3.3?4.5,lower than it of the earth's crust and regional geological body,reflected the metallogenic element geochemical characteristics of Shihongtan uranium deposits.3)The mobile forms of extraction reagent in this paper,can directly extract ion state and adsorption state in[UO2]2+.The horizontal distribution characteristics of the ore-forming and accompanying elements,such as U,Th,Mo,Se,V and REE etc.,controlled by YingZhuiYa fracture,the forward zone of redox,and the discharge edge area of AiDingHu slop,appears the distribution of west by north.The location of elements abnormities overlaps it of ore-body's drill hole,which appears the vital migration characteristic of active elements coming from deep ore-bodies.Meanwhile,the abnormities,controlled by the discharge edge area of AiDingHu slop,primarily is as the result of the lateral migration of the gravity,the running water,or the discharge of groundwater.4)According to the vertical distribution characteristics of ore-forming elements in the drilling hole,shows the "C" shape distribution characteristics,such as "the surface of the gravel samples-red oxide-celadon reductive rock mass" and "celadon reductive rock mass-coal measure strata-celadon reductive rock mass",reflects that the active elements can be absorbed by the surface strong adsorption geochemical barrier in the process of vertical migration.5)The abnormal migration model that:Ore-forming and accompanying elements of the U deposits show horizontal and vertical zoning characteristics.? On the level,there is a zoning characteristic by fracture,the forward of redox and the discharge area of Aidinghu,as the result of the lateral migration of gravity,flowing water and discharge of groud-water and the role of adsorption geochemical barriers;?On the vertical,there is a typed-"C" distribution characteristic,as the result of the vertical migration of more forcings relay and the role of strong and weak geochemical barriers.