内蒙古霍各乞矿区狼山群伸展构造及其控矿作用  

Extensional Tectonics and Ore Control in Hegeqi Ore Area of Inner Mongolia

作　　者：张明华[1] 王春增[1] 

机构地区：[1]桂林工学院资源与环境工程系,桂林市建干路12号541004

出　　处：《广西科学》2002年第3期188-192,197,共6页Guangxi Sciences

基　　金：国家重点科技攻关项目 (85 -90 1-0 1-0 5 -0 1)

摘　　要：对内蒙古霍各乞矿区内面理、线理、褶皱、断裂构造进行多层次、多尺度、详细的构造解析发现 ,内蒙古霍各乞矿区狼山群早期存在明显的伸展变形 ,广泛出现顺层面理。在狼山群第三岩组中发育韧性剪切带、糜棱岩、顺层掩卧褶铍及石香肠构造。霍各乞矿田含矿岩系实际上是变形较强的顺层韧性剪切带 ,矿床或矿体最初在韧性剪切带及顺层面理中富集成矿 ,形成浸染状、层状、条带状、块状矿化。The structures of foliations, lineations,folds and fractures are analyzed in detail in the Hegeqi Ore Field,Inner Mongolia,north China.There apparently exist extensional deformation and layer parallel plane in Langshan group in the earliest stage.The ductile shear zone, mylonite,layer parallel lying fold and boudinage come out extensively in the third group of Langshan.The ore contained rock series in the Hegeqi Ore Field are actually layer parallel ductile shear zones which are strongly deformed.Ores or ore bodies firstly gather in ductile shear zone and layer parallel plane,and then form layered,ribboned,massive ore deposition.

关 键 词：内蒙古 霍各乞矿区 狼山群 伸展构造 控矿作用 地质构造 伸展变形 韧性剪切带 变质岩 

分 类 号：P617.2[天文地球—矿床学]