摘要
鲁西地区基底岩系为一花岗—绿岩区,绿岩区内又分早(?)、晚两期太古代绿岩带。泰安纸房地区是发育较完整的太古代晚期绿岩带,即具有绿岩带三位一体组合的下部超基性—基性岩群,中部钙碱性火山岩群和上部沉积岩群。泰安纸房地区太古代晚期绿岩带具有韧性剪切带的特征,在其中心部位为糜棱岩带,产有几公里长的太古代绿岩带变质热液型金矿化带(含低品位金矿体)。该金矿化带明显受韧性剪切带控制。
The basement rock series in west Shandong is dominated by a granite-greenstone terrane. with the presence of both the early (?) and late Archaean greenstone belts. In the Zhifang area.vthe late Archaean greenstone belt is well developed, that is, the greenstone belt has three parts in one:the lower part of basic-ultrabasic rock suite,the middle part of calc—alkaline volcanic rock suite and the upper part of sedimentary rock suite.THe late Archaean greenstone belt in the Zhifang area has the characteristic ductile shear zone with a mylonite zone in its centre where occurs a gold mineralization zone(containing low grade gold ore bodies)of metamorphic hydrothermal type. The gold mineralization zone extendsvseveral kilometres and is conspicuously controlled by the ductile shear zone.
出处
《山东地质》
1991年第1期1-28,共28页
Geology of Shandong
