Gravity interpretation for delineating subsurface structures and depth of basement at El Moghra area, North Western Desert, Egypt | ||
| NRIAG Journal of Astronomy and Geophysics | ||
| Volume 10, Issue 1, January 2021, Pages 270-278 PDF (11.35 M) | ||
| DOI: 10.1080/20909977.2021.1913364 | ||
| Authors | ||
| Sultan A.S. A. S. Araffa; Maha Abdelazeem; Hassan S. S. Sabet; Ahmed M. M. Al Dabour | ||
| Abstract | ||
| El Moghra area represents a vital part of the national reclamation area at the northern part of Western Desert, Egypt. Delineating subsurface structures (faults & basins) and depth to the basement is the base of planning the area. Basins can be water aquifers or oil traps. Gravity data has been used to tackle such aims. The gravity (Bouguer) anomaly map is separated into regional components (deep sources), and residual component (shallower sources). The residual gravity map was used to delineate subsurface structural features dissecting the investigated area. Also, Euler deconvolution and Tilt Derivative methods have been used for delineating the structural elements. The gravity interpretation indicates that the most main tectonic have E–W, ENE–WSW, and N–S trends for the major structures, while the minor structures are aligned in NNE–SSW, NE–SW, NNW–SSE, and NW–SE. The results of depth estimation using 2D and 3D modelling show that the eastern and southwestern parts of the area under study exhibit a deep basement structure, reaches more than 7000 m (basin). However, the central and northwestern parts of the investigated area show shallower depth of basement rocks (4100 m). | ||
| Keywords | ||
| depth to basement; North-Western desert; Moghra area; Basins; Faults; Euler deconvolution; 2d & 3d modelling | ||
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