The Structural Feature And Mineralization Controlling Law In Taipusi County Area

TaiPusi county area lies in northen margin of the North China plateform, one polymetal metallogenetic belt in China. It adjacent to CaiJiaying lead, zinc, silver polymetal well-known deposit and 460 uranium deposit, HeBei province. In the aspect of regional metallogeny ambient, we can deduce that this region has promising mineral prospecting foreground.The thesis is based on theory of architectonic geology, geomechanics, gitology, mineralize, metallogenic prognosis and metallotect organon ect. According to a great quantity of field investigation and data compiling and analyzing, taking the structural feature of TaiPusi area as the keynote of research, the thesis sum up the structural feature, tectonic stress field evolution, the form of alteration metallization and the mineralization controlling rule. It demonstrated mineral prospecting by combining with geophysical, geochemical and airborne remote sensing measure, and forecast the favorable place for prospecting. The acquired production of the thesis as follows:(1) The thesis proved out the distribution and kinematics feature of main fault through investigation in the research region. NE and NW faults are the main faulted structure in this research region, and they have the multiperiodic activity. Feature. NE faults mainly are compressive fault, and have extention structural feature also. NW fault mainly are extension down faults. They somehow have compress shear structural feature by later stage reform, and they are the main host structure in this aera.(2) The volcanic edifices in this aera mainly are calderas, and has classic circularity physiognomy. This area also has lateral volcano and mainly lie in the line intersection of ring fault and radiant fault. And it is mainly filled up by subvolcanic rocks. NE areal structure have controlled the volcanic eruption process in this area. Craters distributed along areal structure and present as pearl bounch shape.(3) Through field inspection , statistics and analysis to joint. Three stages main tectonic stress field has been resumed. At Yanshanian NE-SE tectonic stress field has great relation with the movement and deposition of mineralizing solution.(4)Trough field mapping, we find out the mainly metallization alteration are ferritization, ferro-manganesation , chloritization, hunteritization., fluoritization and silicification. Ferritization, ferro-manganesation and chloritization are main clues for lead , zinc and silver polymetal ore deposit prospecting in this area.(5) The structure mineralization law, and the superimpose or line intersection of faulted structure , volcanic apparatus, basal structure should be the main prospecting target have been verify initially.(6) According to magmatic rock, layer and the structure mineralization law , three mainly beneficial mineralization prospeting areas have been worked out by combining with the data of geophysical exploration and chemical exploration .