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Subsurface Structural Features of the Basement Complex and Geothermal Resources Using Aeromagnetic Data in the Bahariya Oasis, Western Desert, Egypt

  • Haby S. MohamedEmail author
  • Mohamed Abdel Zaher
Article
  • 76 Downloads

Abstract

Egypt gives priority to Western Desert in land reclamation and sustainable development projects. The Bahariya oasis, a northernmost oasis of Egypt, is closer to the capital compared to other remote oases and represents the most interesting potential candidates for the sustainable development. Many researches provide insight into the hydrogeology and structural geology of the Bahariya oasis; however, very few attempts have been done to investigate its geothermal potentiality. The aim of present study is to reflect the geothermal resources of the Bahariya oasis encountered with the predominant structures utilizing aeromagnetic and borehole data. The main subsurface structures and the depth-to-basement map were retrieved from the 2D modelling of the aeromagnetic data. The results of the 2D models were verified by well stratigraphic data. Spectral analysis of the aeromagnetic data was applied to estimate the Curie point depth (CPD) and to produce geothermal gradient and heat flow maps for the Bahariya oasis. The results of the study indicated that the depth to the basement rocks in the area ranges from 0.6 to 4.0 km. The CPD is 15 km in the central parts and increases to 24 km eastward. The geothermal gradient varies from 20 to 35 °C/km with an average 30 °C/km; however, the heat flow changes from 60 to 100 m W/m2 with an average of 90 m W/m2. These results, in addition to basement structures, imply a high temperature gradient and heat flow correlating with shallow Curie depths. The results are in agreement with previous work in the same region.

Keywords

Geothermal potentiality aeromagnetic Curie point depth temperature gradients heat flow 

Notes

Acknowledgements

This study was primarily supported by the Academy of Scientific Research and Technology in Egypt through a project entitled: “Assessment of Geothermal Resources in Farafra Oasis” (project no. 1351), Deanship of Scientific Research, King Khalid University (SA) (project No.RGP2/54/40). The authors are grateful to Getech Group plc for providing the aeromagnetic data.

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Copyright information

© Springer Nature Switzerland AG 2019

Authors and Affiliations

  1. 1.Geology Department, Faculty of ScienceAssiut UniversityAsyûtEgypt
  2. 2.National Research Institute of Astronomy and Geophysics (NRIAG)HelwanEgypt

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