胶西北焦家断裂带成矿后断裂活动对焦家式金矿破坏作用及找矿方向探讨

本文以焦家断裂带深部上盘发现金矿体的地质事实为依据,将焦家断裂在成矿后对矿体的破坏作用作为讨论重点,根据现今焦家断裂上、下盘金矿体以断层泥为界,有被错断的明显特征,指出发育在焦家断裂主断裂面中的断层泥为成矿后断裂活动的产物.依据上、下盘金矿在矿石类型、围岩蚀变、矿石矿物、成矿阶段等方面具有极为相似一致特征,提出在117...

Adiscussion on katogene of Jiaojia-type gold deposit by post-mineralization fault activities and prospecting direction in Jiaojia Fault Zone,Northwestern Shandong

On the basis of summarizing the achievements of previous researches on Jiaojia type gold deposit in the Jiaojia fault zone,In terms of the fact that "gold orebody" was found in the deep hanging wall of the Jiaojia fault zone,This paper focuses on the destruction of the ore body by the Jiaojia fault after mineralization. According to the fact that the gold ore bodies in the hanging wall and footwall of the Jiaojia fault are bounded by fault gouge and have obvious characteristics of being staggered,it is pointed out that the fault gouge formed in the main fault plane of Jiaojia fault is the product of fault activity after mineralization.In terms of ore type,alteration of surrounding rock, ore minerals and metallogenic stage,the upper and footwall gold ore body have very similar and consistent characteristics,it is propose that Alterated rock type (Jiaojia type) gold deposit in hanging wall and footwall wall have complete unity in time and space during mineralization with a depth of 3~9 km in the Jiaojia fault zone,between 118.8~121Ma.Under the influence of the normal fault effect of post-mineralization Jiaojia fault,the newly discovered hanging wall gold (mineralization) body in the deep of Jiaojia fault should be the part of the footwall gold (mineralization) body that had been broken.