Analysis Of Metallogenic Geological Conditions And Prediction Of Metallogenic Prognosis Of Wujiacun In Inner Mongolia

Wujiacun is located in central of Inner Mongolia,west segment of northern margin of north China plate,it's subordinated to north china stratigraphic subregion,Yinshan stratigraphic subregion and Daqing mountain stratigraphic subregion.It's located in Wulaer-Se'erteng mountain-Daqing mountain the intracontinental uplift area,the northern part of the basin locate in the Zhaertai mountain rift area and the Baiyunebo continental margin rift zone.On the metallogenic section,the study area has good metallogenic conditionsis in Wulashan metallogenic belt.This paper is guided by metallogenic theory and metallogenic prognosis.Using petrology,structural geology,geochemistry and other methods,the stratigraphy and tectonics,magmatic rocks and geochemical characteristics in this area are analyzed comprehensively.That will determine the ore control factors and prospect criteria,that will also summarize metallogenic regularity and forecast prospecting area metallogenic prospective province.Through this study found that the area possesses stratigraphy,magmatic rocks,tectonics "Trinity" control characteristics.The stratigraphy has a mineralization specificity for the mineral deposit.The stratigraphic units,which closely relate to mineralization,are the Wulashan group that provides ore-forming materials for polymetallic mineralization.Magmatic intrusion activity is extremely strong,which concentrates on mesoarchean,Proterozoic,late Variscan and late Yanshan.In the study area,gneiss of the Wulashan group after the original rock was restored to the basic volcanic rocks of iron magnesia to build and develop iron ore point.The neoarchean tonalite and mesoarchean Donghuofang gneiss complex.are closely related to mineralization of Au and Cu,Donghuofang has found medium-sized gold deposits,It's controlled by the mesoarchean Donghuofang gneiss complex.Affected by deep faults,secondary fracture development in the study area,structural deformation in the NE,NEE and NW directions develop in different lithostratigraphic units.In the Paleozoic,the study area entered the uplift period under the compression tectonic setting,In the mesozoic-Cenozoic,the study area was a differential up and down the fault basin and depression basin,which controled the sedimentation of the Jurassic,Cretaceous and even the Neogene.It's an important metallogenic site that structural belt and sides develop the broken alteration zone for mineral enrichment andprovide channels.According to ore prospecting information in all aspects,this study divide four metallogenic prospective provinces.