新构造课件新构造学第三讲09章节
117页1、,第三讲 新构造学研究的地貌学方法,第一节 水系变迁,先成河的形成过程,后成河的形成过程,Formation of subsequent river.,纵谷,横谷:连江支流清莲江,River Capture,At the same time as formation of broad valley in east Ordos, to further east series of NE grabens formed in late Miocene.,Offset of fluvial valleys, by strikeslip faults, provides some of the most important geomorphic evidence for determination of fault slip.,Deflection of drainage along San Andreas fault,Deflection of drainage along San Andreas fault,Located in eastern margin of the Tibetan P
2、lateau,Tibetan Plateau in eastern Asia,Marginal area along the Tibetan Plateau is tectonically active with many large earthquakes, including the most recent Wenchuan 8.0 earthquake of 2008.,Period of peneplain from late Cretaceous to Eocene.,About mid-Eocene, affected by collision between two continental plates of Indian and Eurasia, the Hetao and Yinchuan basins formed in the north and west Ordos areas, respectively.,By the Oligocene, deposits in the Yinchuan Basin expanded and overlapped eastw
3、ard onto the north Ordos peneplain due to west warping of the Ordos block.,The Yinchuan Basin also expanded southward at the same time.,Profile of Yinchuan Basin,Intensive subside but northward retreat of Yinchuan Basin since Miocene.,Oligocene,Sinistral deflection of channel along the Haiyuan Fault Zone.,Sinistral offset of hill slopes along the Haiyuan Fault Zone.,even sinistral offset of tree truck.,However, the amount of offset is not always similar even along the same segment of the fault.,
4、Older rivers should exhibit greater amounts of offset than younger ones because a larger total cumulative movement with time.,Former research demonstrates that the offset rivers across the Haiyuan Fault Zone can be divided into three orders, A, B and C, from large to small and from old to young. The maximum offset of rivers of order A is up to 627m; The maximum offset of rivers of order B is up to 60m; The maximum offset of rivers of order C is up to 18m. It is obvious that older and larger rive
《新构造课件新构造学第三讲09章节》由会员E****分享,可在线阅读,更多相关《新构造课件新构造学第三讲09章节》请在金锄头文库上搜索。
逍遥游复习 知识点整理
近现代法德关系史 高三展示课3稿
当代大学生人生信仰及追求的调查研究
长相思 纳兰性德-ppt课件
课件:危机意识 一
英语ppt演讲关于阿甘正传
发达国家基础教育改革的动向与趋势 修改版
中国民间美术 课件.ppt
生物质发电技术与系统 课程ppt 第1章 生物质发电技术现状及发展趋势 2学时 -----2016
现代信号处理思考题 含答案
执业药师继续教育 抑郁症的药物治疗 100分
小学生的成长档案模板不用修改 万能型
增订六版 现代汉语 上册 第二章文字 思考与练习答案
国家财政ppt课件
加拿大英语介绍
六年级统计图的选择课件
中学生成长档案ppt
中国现代文学史期末复习整理
lohi和hihilo训练对女子赛艇运动员运动能力影响的比较研究
风雨贾平凹阅读答案
2024-04-11 25页
2024-04-11 37页
2024-04-11 28页
2024-04-11 31页
2024-04-11 36页
2024-04-11 29页
2024-04-11 22页
2024-04-11 27页
2024-04-11 34页
2024-04-11 32页