胶东半岛三山岛海底金矿地质特征及成因研究

Geological characteristics and genesis of Sanshandao submarine gold deposit in Jiaodong Peninsula

文中结合实践对胶东半岛三山岛海底金矿地质特征及其成因进行分析探讨。该矿主要处于胶东半岛西北部区域上,该区发育构造和岩浆活动,断裂构造以脆性为主,第四系之下是矿体赋存主要部位,区内的构造活动、蚀变和该区矿化就这非常紧密的联系。综合研究认为该矿属于破碎带蚀变岩型金矿床,重熔岩浆中温热液型是其主要的成因类型,在全面综合研究基础上,总结该矿找矿标志,对区内同类型矿床寻找工作具有重要的指示作用。

Based on practice,the geological characteristics and genesis of Sanshandao submarine gold deposit in Jiaodong Peninsula are analyzed and discussed.The deposit is mainly located in the northwest of Jiaodong Peninsula,where the structure and magmatic activity are developed.The fracture structure is mainly brittle.The ore body is mainly hosted under the quaternary system.The tectonic activity,alteration and mineralization in the area are closely related.Comprehensive study shows that the deposit belongs to altered rock type gold deposit in fracture zone,and the main genetic type is remelting magmatic medium temperature hydrothermal type.On the basis of comprehensive study,the prospecting indicators of the deposit are summarized,which has an important guiding role for the prospecting work of the same type deposits in the area.