Neotectonic Activity and Its Kinematics of Fault System in the South of North China Block
详细信息
- 责任者：Xu Liqing (Key Lab. of Submarine Geosciences and Exploration Techniques ; Ministry of Education ; Qingdao 266100 ; China) ; Li Sanzhong
- 刊名：Earth Science Frontiers
- 出版年：2013
- 卷期：20(4)
- 关键词：活动构造 ; active tectonics ; 新构造 ; neotectonics ; 华北地区 ; North China
- 页码：p.75-87
- 图表：illus., 54 refs.
- 分类号：0300
- issnNo：ISSN1005-2321
- isbnNo：CN11-3370/P
摘要
According to field observations,measurement and analysis of active faults,especially synthesizing morphological and structural evidence for the Quaternary activity of these faults in the south of North China Block,this paper suggests that the NWW NW-trending faults are strong active in the North China Block,and featured by left strike-slipping.The Sanmenxia Lushan-Wuyang Fault inherited from the Pre-Cenozoic fault;the Xinxiang-Shangqiu Faults developed in neotectonic period are Cenozoic intra-crustal faults with sinistral strike-slip component.The geophysical data indicate that there are two NW-trending tectonic and earthquake belts in the deep crustal structure of the northern part of the Jiexiu Xinxiang Liyang and Badang Quanzhou Taiwan earthquake belts,which may have merged into a big one in the mantle.According to spatial distribution of these faults and the related basins,this paper presents a kinematic model of pull-apart basin to clarify the kinematic relations of the NE,the NW-and EW-trending faults in the study area.The two NW-trending tectonic and earthquake belts show sinistral strike-slipping which resulted in pull-apart basins in the south of North China Block and the pre-existing EW-and NNE-trending faults reactivated and some new NW-trending faults developed.Therefore,the complex Cenozoic faults are characterized by block faulting under the control of stress field,strain field and the basement structural framework.
© 2004-2018 中国地质图书馆版权所有 京ICP备05064691号 京公网安备11010802017129号 地址：北京市海淀区学院路29号 邮编：100083 电话：办公室：(+86 10)66554848；文献借阅、咨询服务、科技查新：66554700 |