论文部分内容阅读
河北省张家口市白塔一带石英脉数量众多,部分含金,脉体形态在走向及倾向上产状变化较大,属中温热液矿床。结合区内地质工作成果,对区域成矿地质背景、变质作用、围岩蚀变以及含金石英脉地质特征进行了详细分析,结果表明:1海西期晚期二长花岗岩大规模侵入到新太古界红旗营子群变质岩内,侵入过程与构造活动同期,受构造应力作用形成同构造岩浆岩;2成矿金属物质主要来自新太古界红旗营子群变质岩,海西期岩浆和构造活动为成矿提供了热源和容矿空间,特别是沿不同地质体接触带发育的断裂破碎带为最有利的赋矿、控矿部位。在上述分析的基础上,对矿床成因及找矿方向进行了讨论,对于区内进一步开展金矿找矿工作有一定的参考价值。
A large number of quartz veins along the Baita, Zhangjiakou City, Hebei Province, part of the gold-bearing veins, and the veins of the vein vary greatly in their orientation and tendency, belonging to moderate-temperature hydrothermal deposits. Based on the results of geological work in the area, a detailed analysis is made on the geological background, metamorphism, wall rock alteration and geological characteristics of gold bearing quartz veins in the area. The results show that: 1 the late Hercynian monzonitic granite invaded to the new Pacific In the metamorphic rocks of the Hongqiyingzi group, the intrusive processes and tectonic activities are synchronous with tectono-tectonic magmatism. Metallogenetic metallogeny2 mainly comes from the metamorphic rocks of the Hongqiyingzi Group in the Neo-Archean. The Hercynian magmatic and tectonic activities are Mineralization provides the heat source and the capacity for ore, especially the fractured zone along the contact zone of different geological bodies, which is the most favorable ore-dressing and ore-controlling part. On the basis of the above analysis, the genesis of the deposit and the prospecting direction are discussed, which is of certain reference value for the further exploration of the gold deposit in the area.