摘要
太古代胶东群变质岩、燕山期交代—重熔花岗岩、新华夏系断裂和黄铁绢英岩化与胶西北金矿关系密切。胶东群是矿源层。花岗岩不仅使金活化转移,而且也是第二矿源层。新华系夏断裂为导矿构造和容矿构造。黄铁绢英岩化为金的沉淀富集提供了适宜的物理化学环境。它们既是本区金矿的控矿因素,也是四位一体的找矿标志。
The Archaean Jiaodong group metamorphic rocks, the Yanshanian metasomatic-anatectic granites, the Neocathaysian fault system and beresitization are closely related to the gold ore deposits in the N-W Jiaodong Penisula. The Jiaodong group is considered to be the source bed. The granites not only caused the remobilization of gold but also serve as the secondary source bed. The Neocathaysian faults are the structutes as pathway for ore fluids and the host structures for gold ores. Beresitization furnishes the adequate physical and chemical environment for gold precipitation. Therefore, they are metallogenic factors of gold deposits and comprehensive indicators(criteria) for gold prospecting in the area.
出处
《山东地质》
1991年第1期74-88,共15页
Geology of Shandong
