W. R. Gaweish et al. / News of the Ural State Mining University. 2019. Issue 2(54), pp. 7-19

Relevance. The study area is located at Mandisha village, El-Bahariya Oasis, Western Desert, Egypt. It is suffering from lack of surface water. So it’s important to search for another source of water (as groundwater) that important for everything for live. Based on the literature studies; the main aquifer in the study area is located in the Nubian sandstone aquifer, which located directly on the upper surface of the basement rocks. So the depth of the lower surface of the Nubian sandstone aquifer is equal to the depth of the upper surface of the basement rocks in the study area.
Objectives of the study. This study is used the analysis and interpretation of magnetic data to determine the depth of the basement rocks and the structural elements that affected on the basement rocks at Mandisha area in El-Bahariya Oasis, Western Desert, Egypt.
Research methodology. The Magnetic methods were applied to achieve these goals. One hundred and seventy four magnetic stations were acquired by Overhauser magnetometer instrument (GSM-19 “V7.0”). The magnetic data were processed by using Geosoft Oasis Montaj program. 2D Magnetic Profiles and 3D Magnetic Modeling were established to construct basement relief map in the study area. First Vertical Derivative Technique, Source Edge Detection Method and 3D Euler Deconvolution method were established to determine the locations and directions of faults that affected on the Basement Rocks in the study area.
Work results. The most important results of this study: 1. The depth of the basement rocks in the study area ranges from 1200 m to 2000 m. 2. The northeastern, northwestern and western parts of the study area are characterized by shallow depth of the basement rocks, while the southern and eastern parts of the study area are characterized by deep depth of the basement rocks. 3. Deep faults (more than 2000 m) were located at northern part of the study area. 4. The main direction faults in the study area are NE–SW and E-W direction.

Keywords: Magnetic Data Interpretation, 3D Euler Deconvolution, 2D Magnetic Profile, 3D Magnetic Modeling, Basement Rocks, faults, Geosoft, El-Bahariya Oasis, Western Desert, Egypt.

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