渭北冶峪河谷地质地貌初步研究  

Research on Yeyu River Valley Geomorphology in Northern Weihe

作　　者：杜国云[1] 刘俊菊[1] 邢秀臣[1] 孙祝友[1] 

机构地区：[1]鲁东大学地理与规划学院,山东烟台264025

出　　处：《鲁东大学学报（自然科学版）》2007年第2期168-171,183,共5页Journal of Ludong University:Natural Science Edition

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。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 appeara...

关 键 词：河谷地貌 口镇-关山大断裂 新构造运动 

分 类 号：P931.2[天文地球—自然地理学]