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近年在山东胶莱盆地的东北缘发现了一种新的金矿类型 ,我们称之为“蓬家夼式”金矿。研究表明该矿床赋存于盆地盖层早白垩世砾岩和基底变质杂岩接触带附近的低角度层间滑动断裂带中 ,该断裂带具有延伸大、低角度、倾向滑动和层带结构等特征。主要工业矿体受层间滑动主带—构造角砾岩和磨砾岩带控制 ,低角度层间滑动断裂带为金矿成矿提供了十分有利的构造和物理化学条件
In recent years, a new type of gold deposit has been discovered in the northeastern margin of the Jiaolai Basin in Shandong, which we call the “Pujiagou” gold mine. The study shows that the deposit is found in the low-angle interlaminar sliding fault zone near the contact zone between the Early Cretaceous conglomerate and the basement metamorphic complex in the cover of the basin. The fault has extensibility, low angle, dip-slip and belt structure feature. The main industrial orebodies are controlled by the interlayer sliding main belt - structural breccias and conglomerate belts, and the low-angle interbedded sliding fault zones provide very favorable structural and physico-chemical conditions for the gold mineralization