【摘要】 全球范围内的北西向构造被称为特提斯巨型线性构造,中国境内以婆罗科—祁连山—秦岭线性构造带为主干的北西向构造十分发育,这是一组重要的控矿构造。依据冀西北地区1∶20万区域重力调查成果,讨论了区内北西向构造的地球物理(重力场或磁场)证据及其对重要矿产的定位控制作用,其中康保—赤城—密云断裂是铅锌银最佳成矿带;张北—张家口—怀来—昌平断裂是活动地震带;万全榆林沟—涿鹿倒拉咀断裂则可能是重要的大地构造单元划分界线。更多还原

【Abstract】 The NW-trending tectonic belts in the world are called Tethyan gigantic linear tectonics.The NW-trending structures along Poluokenu Qilian Mountains Qinling are well developed,making up an important set of ore-controlling structures.Based on 1∶200 000 regional gravity survey in northwestern Hebei,this paper has discussed the geophysical(gravity field and magnetic field) evidence and its role in locating important mineral resources. Among the faulted structures,Kangbao Chicheng Miyun rift is the best ore-forming zone for lead,zinc and silver deposits,Zhangbei Zhangjiakou Huailai Changping rift is an active earthquake zone,and Wanquanyulingou Zhuoludaolazui rift may be an important boundary of geotectonic units.更多还原