河北省金矿成矿时空分布规律概述:幔枝构造成矿理论视角OACHSSCD

As one of the important gold producing areas in China,Hebei province has a good prospecting prospect.Based on the data of 18 typical gold deposits,the spatial and temporal distribution of gold deposits in Hebei province was systematically analyzed and summarized from the perspective of mantle branch structure mineralization theory.The research shows that:in terms of time,the gold mineralization period is mainly divided into Yanshan period,Hercynian period and Indosinian period,among which Yanshan period is the peak period,with obvious multi-stage metallogenic superposition characteristics.In space,the distribution of gold deposits is mainly concentrated in the mantle branch tectonic areas such as Qianxi-Kuancheng in eastern Hebei,Fengning-Longhua in northern Hebei,Zhangjiakou-Xuanhua in northwestern Hebei and Laiyuan-Fuping in western Hebei.It is controlled by the faults and detachment slip zones near the acidic rock mass in the core of the mantle branch structure,and can be produced in metamorphic strata,(volcanic)sedimentary strata,rock mass and other geological bodies.The above metallogenic characteristics can provide a basis for further study of the metallogenic regularity and prospecting exploration of gold deposits in this area.