摘要
北衙金矿与构造、岩浆活动、沉积建造、围岩蚀变等关系密切。构造具多期次活动特点 ,近NS向断裂控制主矿体展布。岩浆活动具多个喷发旋回。金矿体赋存于褐铁矿体(层 )中 ,产出空间和时间上与正长斑岩有密切的成生关系。磁异常值较高地段 ,预示着有褐铁矿体 (层 )存在。化探异常的浓集区 ,均指示金矿的存在。
The Beiya Au deposit is closely related to the structure, magmatism, sedimentary formation and wallrock alteration, etc. The structure is characterized by multistage activity. The extension of main ore body is controlled by the nearly S-N fault. And there are many eruptive cycles in the magmatism. The Au orebody is occurred in the limnite body(bed). And the genesis is closely related in time and space to the syenite-porphyry. The high magnetic anomaly indicates the occurrence of limnite body(bed). And the concentration area of geochemical anomaly shows the Au deposit is occurred.
出处
《云南地质》
2003年第3期274-280,共7页
Yunnan Geology
