摘要
超大型拖布卡金矿的发现,表明东川地区具备找金前景。“黑层”是金的成矿前提,断裂加蚀变是成矿必备条件,基性与中性岩脉在容矿层中的侵位,是找富金的重要标志。金成矿全过程应是多旋回(晋宁、华力西、燕山、喜马拉雅山)成矿作用,且受剪切破碎带控制的黑层型金矿。
The discovery of large scale Tuobuka Au deposit shows the Au - prospecting potentiality in Dongchuan region. The prerequisite of Au metallogenesis is the “Black Bed” ; the necessary conditions of Au metallogenesis are fault and alteration; the important marks of prospecting for rich Au deposit are the emplacements of basic and intermediate rock veins in the ore - bearing beds. Therefore, it belongs to the “Black Bed” type Au deposit formed by the polycyclic （Jinning, Variscan, Yanshanian, Himalayan） metallogenesis and controlled by the shear fracture zone.
出处
《云南地质》
2005年第3期243-253,共11页
Yunnan Geology
关键词
黑层型金矿
剪切破碎带控制
多旋回成矿
超大型规模
拖布卡
东川
云南.
“Black Bed” Type Au Deposit
Shear Fracture Zone Control
Polycyclic Metallogenesis
Large Scale
Tuobuka, Dongchuan, Yunnan
