An overview on structural geophysics application along Cairo-Suez District: Case studies

Abstract

In recent, it's crucial to thoroughly assess geological conditions and potential hazards when planning and developing urban areas sustainably. Especially in regions where there's limited exposure of rock formations and easily accessible geological data, there's a higher risk of encountering unforeseen hazards. This study tackles this challenge in one of Egypt's heavily deformed areas, offering a comprehensive method for conducting detailed geological and structural mapping in urban settings. This involves collecting data from both the surface and subsurface through field measurements. The aim is to create a detailed profile of the geological conditions, including the underlying structural framework, in a newly established urban hub chosen as a case study. To achieve this, we've carefully mapped out the surface structural data on an intricate geological map, considering the shape and distribution of surface rock layers. We've also conducted a geophysical survey using direct current resistivity (DCR) sounding to reveal the near-surface geology. To overcome the challenges in interpreting DCR sounding data, we've applied both traditional and innovative inversion techniques, making use of available borehole information. Additionally, we've accumulated and analysed the mapped fault segments, both on the surface and in the near-surface, to construct a detailed structural model. Since issues like fault ruptures and the expansion of shale layers have significant implications for sustainable urban development, we've provided an initial assessment of geohazards. This approach offers a comprehensive view of urban geological mapping, providing a foundation for identifying potential hazards or opportunities in the early stages of proposed sustainable development projects.