内蒙古中部地区金矿床控矿构造类型  

The types of ore-controlling structures for gold deposits In the area of Central Inner Mongolia

作　　者：梁一鸿[1] 孙德育[1] 张业明 

机构地区：[1]长春地质学院 [2]宜昌地质研究所

出　　处：《黄金》1993年第2期5-9,共5页Gold

摘　　要：本区金矿床控矿构造分为:韧性剪切带、平面膝折带和断裂构造.韧性剪切带是金矿的控矿构造带和金的相对富集带,同时控制了同韧性剪切作用的金矿床.平面膝折带的容矿构造是垂直平面膝折带处岩层走向的雁行式张裂隙和平面膝折带转折处的虚脱空间.本区断裂构造大体可分为近东西向和北北东向断裂,而成矿前近东西向断裂在成矿构造应力场作用下张开最有利控矿.According to structural analysis of typical gold deposits in Central Inner Mongolia, the ore-controlling structures of gold deposits in the area are classified into three types, i.e.duetile shear zone, kink-bands and brittle faults. A ductile shear zone can be an ore-controlling tectonic zone, also a relatively enriched zone of gold and can control gold deposits directly during ductile shea-ring. There are special ore-bearing spaces in a kink-band.They are expanded fractures parallel to the strike direction of the bed near kink band, the tensional fractures obliquely crossing the strike direction of the bed near the kink band, and the saddle spaces in the turning part of the kink band. Brittle faults In the area can be divided into three types, the east-west faults formed before mineralization, the NNE faults formed during mineralization and the east-west faults formed after mineralization. It is favorable for mineralization when the east-west faults formed before mineralization are opened during mineralization.

关 键 词：金矿 控矿构造类型 内蒙古 

分 类 号：P618.51[天文地球—矿床学]