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Integrated potential field study on the subsurface structural characterization of the area North Bahariya Oasis, Western Desert, Egypt

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Abstract

The present study aims mainly to delineate and outline the regional subsurface structural and tectonic framework of the buried basement rocks of Abu El Gharadig Basin, Northern Western Desert, Egypt. The potential field data (Bouguer gravity and total intensity aeromagnetic maps) carried out in the Abu El Gharadig Basin had been analyzed together with other geophysical and geological studies. The execution of this study is initiated by transformation of the total intensity aeromagnetic data to the reduced to pole (RTP) magnetic map. This is followed by applying several transformation techniques and various filtering processes through qualitative and quantitative analyses on both of the gravity and magnetic data. These techniques include the qualitative interpretation of gravity, total intensity magnetic and RTP magnetic maps. Regional–residual separation is carried out using the power spectrum. Also, the analytic signal and second vertical derivative techniques are applied to delineate the hidden anomalies. Aeromagnetic anomalies in the area reflect significant features on the basement tectonics, on the deep-seated structures and on the shallow-seated ones. Major faults and intrusions in the area are indicated to be mainly along the NE–SW, NW–SE, ENE–WSW and E–W directions. The Bouguer gravity map indicates major basement fracturing, as well as variations in the sedimentary basins and ridges and subsequent tectonic disturbances. The most obvious anomalous trends on the gravity map, based on their frequencies and amplitudes, are along the NE–SW, ENE–WSW, E–W and NW–SE trends. The main of Abu EL Gharadig Basin depositional center does not show sharp variations, because of the homogeneity of the marine rocks and the great basement depths.

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Authors and Affiliations

  1. Geology Department, Faculty of Science, Tanta University, Tanta, Egypt

    S. T. Elkhodary

  2. Exploration Division, Nuclear Materials Authority, PO Box 530, Maadi, Cairo, Egypt

    M. A. S. Youssef

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  1. S. T. Elkhodary
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  2. M. A. S. Youssef
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Correspondence to S. T. Elkhodary.

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Elkhodary, S.T., Youssef, M.A.S. Integrated potential field study on the subsurface structural characterization of the area North Bahariya Oasis, Western Desert, Egypt. Arab J Geosci 6, 3185–3200 (2013). https://doi.org/10.1007/s12517-012-0590-x

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  • DOI: https://doi.org/10.1007/s12517-012-0590-x

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