摘要
金窝子金矿田大地构造位置上处于中朝-塔里木板块与哈萨克斯坦板块俯冲碰撞带南缘的北山中带。金窝子地区金矿床主要有两种类型,一是产在金窝子华力西期花岗闪长岩体中受NNW向陡倾断层控制的含金石英脉型金矿床;另一是产在上泥盆统金窝子组(D3j)地层中、受NE向低角度断层控制的蚀变糜棱岩型金矿床。金窝子金矿的成矿时代远晚于金窝子花岗闪长岩体的侵位时间。金矿形成时间与剪切带的活动时代基本是一致的,表明矿体明显受区域构造的控制。
In tectonics, the Jinwozi gold ore field is located in the central Beishan area, southern margin of the subduction - collision zone between the Siuo - Korea - Tarim and Kazakhstan plates. It hosts two main types of gold deposits. One is the lode gold deposits which was produced in Jinwozi Variscan granodiorite pluton controlled by the NNW - trending steeply dipping fault, and the other is altered mylonite type of gold deposits which was formed in the upper Devonian Jinwozi group （D3j） formation controlled by the NE trending low angle fault. The Jinwozi gold deposit~ mineralization age is much later than its granodiorite pluton emplacement time, implying the hydrothermal fluids were not from Jinwozi granitic magma. Gold ore forming and shear zone were roughly of the same age, indicating that ore bodies were controlled by regional structure.
出处
《地质与勘探》
CAS
CSCD
北大核心
2014年第1期8-17,共10页
Geology and Exploration
基金
中国地质调查局项目(12120113078200)
中国地质大调查项目(1212010633903)联合资助
关键词
金窝子金矿
地质特征
成矿条件
Jinwozi gold deposit, geological characteristics, mineralization conditions
