| The Altun Fault: Its Geometry, Nature and Mode of Growth |
| |
| 作者姓名： | GUI Junwen LI Li YANG Jingsui YUE Yongjun LI Pengwu ZHANG Jianxinand CHEN WenInstitute of Geology Chinese Academy of Geological Sciences Baiwanzhuang Rd. Beijing |
| |
| 作者单位： | GUI Junwen，LI Li，YANG Jingsui，YUE Yongjun，LI Pengwu，ZHANG Jianxinand CHEN WenInstitute of Geology，Chinese Academy of Geological Sciences，26 Baiwanzhuang Rd.，Beijing 100037 |
| |
| 摘 要： | The Altun (or Altyn Tagh) fault displays a geometry of overlapping of linear and arcuate segments and shows strong inhomogeneity in time and space. It is a gigantic fault system with complex mechanical behaviours including thrusting, sinistral strike slip and normal slip. The strike slip and normal slip mainly occurred in the Cretaceous-Cenozoic and Plio-Quaternary respectively, whereas the thrusting was a deformation event that has played a dominant role since the late Palaeozoic (for a duration of about 305 Ma). The formation of the Altun fault was related to strong inhomogeneous deformation of the massifs on its two sides (in the hinterland of the Altun Mountains contractional deformation predominated and in the Qilian massif thrust propagation was dominant). The fault experienced a dynamic process of successive break-up and connection of its segments and gradual propagation, which was synchronous with the development of an overstep thrust sequence in the Qilian massif and the uplift of the Qinghai-T
|
The Altun Fault: Its Geometry, Nature and Mode of Growth |
| |
| Authors: | GUI Junwen LI Li YANG Jingsui YUE Yongjun LI Pengwu ZHANG Jianxinand CHEN WenInstitute of Geology Chinese Academy of Geological Sciences Baiwanzhuang Rd Beijing |
| |
| Abstract: | The Altun (or Altyn Tagh) fault displays a geometry of overlapping of linear and arcuate segments and shows strong inhomogeneity in time and space. It is a gigantic fault system with complex mechanical behaviours including thrusting, sinistral strike slip and normal slip. The strike slip and normal slip mainly occurred in the Cretaceous-Cenozoic and Plio-Quaternary respectively, whereas the thrusting was a deformation event that has played a dominant role since the late Palaeozoic (for a duration of about 305 Ma). The formation of the Altun fault was related to strong inhomogeneous deformation of the massifs on its two sides (in the hinterland of the Altun Mountains contractional deformation predominated and in the Qilian massif thrust propagation was dominant). The fault experienced a dynamic process of successive break-up and connection of its segments and gradual propagation, which was synchronous with the development of an overstep thrust sequence in the Qilian massif and the uplift of the Qinghai-Tibet plateau. With southward propagation of the thrust sequence and continued uplift of the plateau, the ME tip of the Altun fault moved in a NE direction, while the SW tip grew in a SW direction. |
| |
| Keywords: | Altun (Altyn Tagh) fault thrust sequence propagation sinistral strike-slip mode of growth |
| 本文献已被 CNKI 万方数据 等数据库收录！ |
| 点击此处可从《Acta Geologica Sinica》浏览原始摘要信息 |
| 点击此处可从《Acta Geologica Sinica》下载免费的PDF全文 |
