Tectonic Framework of Central Sinai (Egypt) Using Geophysical and Seismological Data

• Published in: Geotectonics 2023-08, Vol.57 (4), p.482-495
• Main Authors: Hamed, H. G., Araffa, S. A. S., Sabet, H. S., Abu Bakr, M. M., Mebed, M. El-Saied
• Format: Article
• Language: English
• Subjects: Aquifers; Basement rock; Basements; Basins; Crystalline rocks; Depth; Earth and Environmental Science; Earth Sciences; Gravity exploration; Low pass filters; Magnetic studies; Modelling; North Pole; Relief maps; Rocks; Seismological data; Seismology; Structural Geology; Structural members; Tectonics; Two dimensional models; Water depth
• ISSN: 0016-8521; 1556-1976
• DOI: 10.1134/S0016852123040088

The study region is in Sinai (Egypt), which lies almost in the center of the Sinai Peninsula. It is situated between two latitudes 29°28′48.8″ and 30°11′43.5″ N and longitudes 33°05′34.4″ and 34°37′09″ E. The present study of magnetic and gravity methods were used in this investigation to delineate subsurface structures (structural elements and basins), and the basement depth serves as the area planning foundation. Aquifers of water or oil can be found in basins. There were measured 1202 magnetic and gravity stations placed in the study region. Oasis Montaj was used to process data of both magnetic and gravity. The ground data of magnetic was subjected to reductions to the North Pole, high and low pass filtering, tilt derivatives, structural interpretation, and Euler solution techniques. A basement relief map was built using 2D gravity and magnetic modeling. The research area basement rocks lay between 1500 and 5700 m beneath the surface. The depth was estimated using 2D modeling, and the results suggest that a deep underground (basin) may be visible in the northern regions of the study area. However, the southern parts of the area under research show a shallower depth of crystalline rocks and thinner sediment layers.