摘要
通过对北祁连造山带西段遥感图像解译和遥感构造定量分析，得出下列规律性认识：①北祁连造山带西段有北西向和近东西向两组带状延伸的高密度线性体场相互交切，显示造山带内部结构为强应变带和弱应变的菱形块体相间列；②北东向阿尔金断裂带为一宽（２０～３０）ｋｍ的左行剪切带，它明显切割北西向祁连山断裂体系；③带状延伸的高密度线性体场是寻找金铜矿远景区域，北西向线性体场与其它方向构造相交的交叉结是重要的控矿构造，环状高密度线性体场是寻找热液蚀变型金铜矿最有利地段。
Contrasting the interpretation of remote sensing with the quantitative analyses of remote sensing structure in the western part of North Qilian orogenic belt,the following regularities can be recognized.(1)The extended,high density lineament fields with a NE trend and an approximate EW trend cross each other,which displays that the architecture of the orogenic belt is the associations of linear,high strain belts and rhombic,low strain domains.(2)The Aljin fault with NE trend is a sinistral shear zone which is 20～30 km in width.It obviously intersects the NW trend Qilianshan fault system.(3)Extended,high density lineament fields are the perspective areas of exploring Au Cu deposits.The intersection nodes of the NW trend lineament fields and the structures with other directions are the important ore controlling structures.Annular,high density fields are the most favourable areas for exploring Au Cu deposits of hydrothermal alteration type.
出处
《地质科技情报》
CAS
CSCD
北大核心
1997年第S1期66+68-73,共7页
Geological Science and Technology Information
基金
国家科技攻关项目"应用遥感图像处理研究北祁连西段断裂组合规律"
关键词
祁连山
遥感构造
金铜矿
阿尔金断裂
Qilianshan,remote sensing structure,Au Cu deposits,Aljin fault
