Extension and rifting: the Zeit region,Gulf of Suez |
| |
| Authors: | J Angelier |
| |
| Institution: | Tectonique Quantitative, Département de Géotectonique, Université P. et M. Curie, 4 place Jussieu, 75230 Paris Cedex 05, France |
| |
| Abstract: | A field analysis of faults and fractures in the Ras Gharib-Ras Gemsa region of the Gulf of Suez shows that the main Late Cenozoic extension occurred perpendicular to the rift axis. Three main types of dip-slip normal faults successively developed as the tilt of blocks bounded by antithetic normal faults increased. Determinations of the amount of extension from structural data are compatible with estimates made using subsidence data through a simplified model of lithospheric stretching. The uplift of rift shoulders is related in chronology and volume to the subsidence of the rift. The geometry of fault patterns and directions of extension suggests that the Late Cenozoic total movement corresponds to a counterclockwise rotation of 4–5° of Sinai relative to Africa, with a pole close to Cairo. |
| |
| Keywords: | |
| 本文献已被 ScienceDirect 等数据库收录！ |
|
