Subsurface structural characterization as deduced from potential field data—West Beni Suef, Western Desert, Egypt

• Published in: Arabian journal of geosciences Vol. 15; no. 21
• Main Authors: Khalil, Ahmed, Hafeez, Tharwat H. Abdel, kotb, Ahmed El, Saleh, Hassan S., Mohamed, Waheed H., Takla, Emad
• Format: Journal Article
• Language: English
• Published: Cham Springer International Publishing 01.11.2022; Springer Nature B.V
• Subjects: Analysis; Anomalies; Basements; Contouring; Data acquisition; Depth; Deserts; Diurnal variations; Earth and Environmental Science; Earth science; Earth Sciences; Edge detection; Geomagnetic field; Geomagnetism; Land acquisition; Magnetic data; Magnetic poles; Magnetic surveys; Magnetometers; Original Paper; Potential fields; Power spectrum analysis; Proton magnetometers; Reduction; Relief maps; Spectral analysis; Spectrum analysis; Structural analysis; Structural members; Surveying; Surveys; Trend analysis; Western Desert; Egypt; Depth of basement and subsurface structures; Magnetic survey; Gravity data
• ISSN: 1866-7511; 1866-7538
• DOI: 10.1007/s12517-022-10900-1

The goal of present study is determining subsurface structural elements by analyzing geomagnetic data sets aiming to examine their impacts on geological surface structures characterizing the western region in Beni-Suef Governorate, Western Desert, Egypt. A land-magnetic survey is conducted by two exceedingly sensitive proton magnetometers to measure the total intensity of geomagnetic field at the region under investigation. The measurements of regional gradients and time variation were applied to get the required reduction of daily variation. The regional expansions of subsurface structural units were obtained after applying the reduction to north magnetic pole (RTP) method to the corrected magnetic data acquired from land-magnetic survey along with Bouguer maps (1:100,000 scale and 1-mGal contouring interval). Regional-residual technique was applied depending on the power spectrum analysis. Moreover, the edge detection approach is conducted to depict the structures and subsurface hidden anomalies. Different handling processes were applied for acquired land magnetic datasets such as Euler deconvolution and trend analysis. The results of current study revealed that four significant structural forces across the N-S, NW–SE, NE-SW, and E-W directions affected the region. Estimating the basement depth was accomplished using a number of spectral analysis techniques. The values of estimated depths are used for creating a basement relief map. Moreover, the achieved results show that depths to the basement at the region under study vary between 2.3 and 4.7 km.