摘要
罗山金矿床矿脉的几何特征、排列形式的分析研究结果表明,该矿床的控矿断裂是在近东西向左旋剪切应力作用下,由玲珑花岗岩中发育的雁行小断裂逐渐发展演化而成的,成矿期的控矿断裂活动以水平剪切为主的成矿作用是同一期构造中矿化活动过程中多次脉动的表现。矿体在剖面上多赋存在断裂沿倾向舒缓变化的陡倾部位,在平面上主要赋存在弧形断裂走向近NE方向的中段,且常呈雁行排列、尖天再现、等距分布之特点。
The result of the study on the geometric features and the arrangemental form of the veins oecured in Luoshan gold deposit shows: that the or-econtrolling faults in the deposit result from the small en-echelon faults developed in Linglong granite acted by. left circle shear stress near eastwest direction. The activities of ore-controiling faults during mineralizakion mainly present horizontal shear. The metaliization is the reflection of multipulisation during the same tectonic-mineralization process. The orebodies are discovered in the places of high angle of the fanlt dip changing from high angle to low on profiles and the ranges near northerneast in orientation of the are-fault on horizontal plane, and they often show the features of en-echelon arrangement, thin out and occur in right, and near equal distance distribution.
出处
《华东地质学院学报》
1989年第3期13-21,共9页
Journal of East China Geological Institute
关键词
金矿
控矿构造
断裂
矿脉
山东
gold deposit
vein
ore-controlling fault
shandong
