assessment of earthquake activity of a rift-bounding fault, northwest of gulf of suez, egypt | ||||
| Egyptian Journal of Geology | ||||
| Volume 69, Issue 1, 2025, Page 165-195 PDF (4.42 MB) | ||||
| Document Type: Original Article | ||||
| DOI: 10.21608/egjg.2025.390447.1116 | ||||
 View on SCiNiTO | ||||
| Authors | ||||
Shadi Abdelhadi Mohammad  1; Karim ِِAbdelmalik2; Sherif Mohammad Elhady3; Ali Mohammad Abd-Allah2
| ||||
| 1Demonstrator at the Geology department, Faculty of Science, Ain Shams University | ||||
| 2Ain Shams University, Faculty of Science, Geology Department, 11566, Cairo, Egypt | ||||
| 3Seismology Department, National Research Institute of astronomy and geophysics | ||||
| Abstract | ||||
| Ongoing tectonic activity—originally responsible for the development of a rift-bounding fault system in the northwestern Gulf of Suez, Egypt—has prompted a preliminary assessment of related seismic events. The study focuses on several urbanized sites along the western coastline, where recent surface fractures were documented and analysed to explore their connection to ongoing seismicity. It is an initial attempt to apply TENSOR stress inversion techniques—such as PBT and right-dihedral methods—were applied to field-measured fracture data that were systematically collected from six key sites. The analysis generated reduced stress tensors, rose diagrams, Mohr circles, and stereographic projections, revealing localized stress regimes across the region, from which the mean stress regime acting upon the entire region was retrieved. While most sites displayed pure or axial extensional stress fields, transtensional regimes were identified in specific cases. The spatial correlation between recent fracture orientations and the traces of pre-existing deep-seated faults revealed dominant E–W to NNW–SSE trends, consistent with the stress fields associated with Miocene Gulf of Suez rifting. However, notable ENE–WSW fracture patterns observed at Banzeenah and Porto sites suggest the presence of additional localized tectonic influences. Overall, those integrated approaches highlight the continued reactivation of pre-existing rift-related structures and their role in present-day seismic deformation along the western margin of the Gulf of Suez. | ||||
| Keywords | ||||
| Neo-tectonic analysis; Stress tensor; Post-seismic deformation; Western Gulf of Suez coasts | ||||
|
Statistics Article View: 68 PDF Download: 39 |
||||
