The geostructure of the research area is located in the northern margin of the Yangtze block,which belongs to the middle part of the southern wing of the Chentang-Guankou syncline of the Jiangnan uplift belt.In this area,the rock mass and structure are developed,and the alteration development is strong in the rock mass contact zone and the structural fracture zone,mainly in silicification,yellow(brown)iron mineralization,sericite mineralization,carbonation,etc.Regional geochemistry shows that the metallogenic conditions of hydrothermal gold and silver polymetallic deposits in this area are good.Based on the regional geochemical anomaly and soil chemistry and geophysical survey,the main prospecting target areas are identified as the near east-northeast thrust fault and the near east-west contact fault fracture zone of Carboniferous and Devonian system.Based on the anomaly delineated by geophysical and chemical exploration,the ore-bearing geological body was found and delineated in the fracture contact zone of the reverse(overthrust)fault between Huanglong Formation limestone and quartz diorite porphyrite by borehole verification.Therefore,the physical and chemical exploration method can be used as an effective prospecting method in this area.
Yangtze BlockDongfeng Ridgephysical and chemical detection quantityprospecting target area
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