山东十里堡地区地质特征及金矿找矿方向

十里堡地区出露地层主要为古元古代粉子山群祝家夼组变质岩,区内断裂构造发育,分为近东西向、北东向、北西向三组,区内大面积分布呈岩基状产出的新太古代早期栖霞序列回龙夼单元和新太古代晚期谭格庄序列牟家单元。区内共发现10条规模较大的含金矿化蚀变岩带,其中圈定了8个金矿体,金矿化均赋存在黄铁绢英岩化蚀变碎裂岩内,受断裂构造及次级断裂控制。本矿床为中低温热液裂隙充填交代型金矿床。

The exposed strata in the Shilibu area are mainly metamorphic rocks of the Zhujiakuang formation of the ancient Fen-zishan group of Gu Yuan. The fault structures in the area are developed and divided into three groups： nearly east-west trending,east -north trending, and north -west -trending. In this area, the early NeoArchean Qixia sequence Huilongkuang unit and lateNeoArchean Tangezhuang sequence Mujia unit are widely distributed in the form of rock-base. Ten gold-bearing mineralized and al-tered rock belts were found in the area, in which eight gold orebodies were delineated, and gold mineralization was controlled byfracture structure and secondary faults. The gold mineralization occurred in the metamorphosed cataclastic rocks of the sericite of theyellow iron. This deposit is a meso-low temperature hydrothermal fissure filling metasomatic gold deposit.