【摘要】 对发育于渭北地区的口镇-关山大断裂口镇段的冶峪河谷地貌进行了研究。断裂北盘阶段性构造抬升与流水作用形成了山顶面、两级河谷谷坡阶面和现代深切河谷4个地貌面,反映出本地至少存在3次阶段性的构造抬升活动。河谷中局部发现了相应的山间河流相砾石堆积层,可与乾县大北沟乾县组对比。多级地貌结构反映了新构造时期陕北高原阶段性抬升与渭河谷地阶段性断陷的构造活动历史。更多还原

【Abstract】 Yeyu river valley geomorphology in Kouzhen of Kouzhen-Guanshan faults in north of Weihe river is researched.There are the rises and shaped geomorphic in 4 periods,including hilltop surface,2 class old steps in the incline of the river valleys and recent river valley,there are at least 3 periods of neotectonic rising.The fluvial face gravel stratum discovered in second old river-valley maybe contrast to Qianxian Formation in Dabeigou,Qianxian,which belongs to the deposit of late Pleistocene Epoch.The appearance of multilevel geomorphology makes sure the staggered neotectonic history of sinking for Weihe break-fall basin and rising comparatively of Shanbei plateau.更多还原