Uplift of NW Margin of Qaidam Basin in the Late Eocene: Implications for the Initiation of Altyn Tagh Fault
详细信息
- 责任者：Mao Liguang (Department of Earth Sciences ; Zhejiang University ; Hangzhou 310027 ; China) ; Xiao Ancheng
- 刊名：Acta Petrologica Sinica
- 出版年：2013
- 卷期：29(8)
- 关键词：隆起 ; uplifts ; 断裂带 ; fracture zones ; 柴达木盆地 ; Qaidam Basin ; 阿尔金断裂带 ; Altun Fracture Zone
- 页码：p.2876-2882
- 图表：8 illus., 27 refs.
- 分类号：0300
- issnNo：ISSN1000-0569
- isbnNo：CN11-1922/P
摘要
The evolution of Altyn Fault holds a key link in understanding the formation process of Tibet Plateau. The sedimentary and tectonic study of seismic sections,strata isopach maps and sedimentary facies maps of NW Qaidam Basin reveals the initial uplifting related with Altyn Fault at the Late Eocene,which led to the formation of the growth strata at the NW margin of Qaidam Basin. While in the map view,these NWW-SEE trending uplift sintersect with Altyn Fault by an angle of ～ 30° and induce marginal sedimentary environment such as alluvial fan etc. Based on these observations,we conclude the initial development of Altyn Fault started at the Late Eocene,which may form a ductile sinistral shear zone in the deep and as a result a left-ordered echelon folding zone on the surface for accommodating the displacement.
© 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 |