滩间山金矿田控矿构造特征  

STRUCTURES IN THE TANJIANSHAN GOLD OREFIELD

作　　者：魏刚锋[1] 于风池[1] 白开寅[1] 

机构地区：[1]西安地质学院地质构造研究所,西安地质学院资源系

出　　处：《西安地质学院学报》1995年第4期8-16,共9页

摘　　要：本文首次研究了滩间山金矿田控矿构造特征。笔者认为合碳堇青石白云母石英糜棱片岩之中的控矿构造在加里东期韧性剪切带基础上发育而成；华力酉期，闪长玢岩和煌斑岩脉与糜棱片岩接触部位控矿构造生成，并同上述糜棱岩之中的控矿构造一起经历了韧脆性剪切作用；印支运动之后，控矿构造演化为脆性断裂。金矿的形成富集与控矿构造多期（次）活动密切相关。华力酉期韧脆性剪切作用则做出了突出贡献。闪长玢岩、煌斑岩脉接触带韧脆性变形强烈以及控矿构造张扭性扩容空间和拉伸量较大地段是寻找金矿体的有利部位。The characteristics of ore-controlling structures in the Tanjianshan gold ore field are first studied in thispaper. The authors hold that the ore--controlling structures in cabonaceous cordierite muscovite quartz mylnitic schist were formed on ductile shear belt in Caledonian. The ore-controlling structures were produced atthe contact part of dioritic porphyrite and lamprophyre with mylonitic schist.in Variscanian. They endured aductile-brittle shear action with ore-controlling structures in mylonitic schist mentioned above. All the orecontrolling structures evoluved brittle faults after indosinian. The formation and aboundance of the gOld oreare closely related to multiperiodic activities of the ore-controlling structures. DUctile-brittle shearing inVariscanian made a great contribution. It is held that gold ore is likely to be formed in the area where ductilebrittle deformation located contacts with dioritic porphrrite and lamprophyre is intense and there are tensionshear expansive space as well as much bigger tensility'

关 键 词：控矿构造 多期活动 金矿床 

分 类 号：P618.510.2[天文地球—矿床学]