УДК   550.83 


S. V. Shimanskiy, A. Tarshan / News of the Ural State Mining University. 2019. Issue 1(53), pp. 7-17

One of the best methods used to delineate basement structures and configuration is the airborne magnetic survey data.
The goal of this research is to accurately delineate the deep-seated basement configuration and structures. Production of geophysical maps after processing the data, including two-dimensional (2D) and three-dimensional (3D) magnetic susceptibility layered-earth models for high-resolution airborne RTP magnetic data over the eastern part of the Gulf of Suez, was conducted to accurately detect the shallow and deep-seated basement structures. The well data was used to correlate and control the depth of the basement during the 2D and 3D modelling.
Results of the estimation of the depth to the basement showed that Analytical Signal (AS), Source Parameter Imaging (SPI) and Euler methods have very similar results. The eastern part in the three maps indicates more shallow depths that reach 300 m in some locations; on the other hand, the western part of the area indicates deeper depths to the basement, which in some places reaches 5000 m from the existing averaged ground surface. The 3D modelling showed an adequate matching between the depth to the basement in the calculated and observed data. The sedimentary section is tectonically affected by such deep-seated basement structures with a set of faults that extend from the basement upwards through the sedimentary cover. Generally, these faulted sedimentary blocks may constitute potential structural traps for the hydrocarbon accumulation.

Keywords:  2D and 3D magnetic susceptibility, layered-earth models, deep-sated basement structures, regional and residual RTP, eastern Gulf of Suez region.



1. Meshref W. M. 1990, Tectonic framework of Egypt. In: R. Said (Ed.). The Geology of Egypt. Rotterdam, Netherlands, Balkema Publishers, pp. 113–156.
2. McClay K. R., Nicols G. J., Khalil S. M., Darwish M., Bosworth, W. 1998, Extensional tectonics and sedimentation, eastern Gulf of Suez, Egypt. In: B. H. Purser and D. W. I. Bosence (Eds.). Sedimentation and Tectonics of Rift Basins: Red Sea–Gulf of Aden. London, Chapman and Hall, pp. 223–238.
3. Dobrin M. B. 1976, Introduction to geophysical prospecting. N. Y., USA, McGraw-Hill Book Co. 630 р.
4. 2006, Geosoft. Montaj Geophysics Levelling System, Processing and enhancement geophysical data expansion for Oasis montaj. Toronto, Geosoft Inc. Vol. 3.
5. Kearey P., Michael B. 1994, An introduction to geophysical exploration. Second Edition. London, Great Britain, Blackwell Scientific Publication, p. 245.
6. Blakely R. J. 1995, Potential theory in gravity and magnetic applications. Cambridge, England, Cambridge University Press. 461 р.
7. Ali M. M. 2009, Acquisition, processing and interpretation of airborne magnetic and gamma-ray spectrometry survey data of Elkharga area, Central Western Desert Egypt, M. Sc. Thesis. Al Minufiya, Egypt, Menoufiya University, pp. 30–39.
8. Thurston J. B., Smith R. S. 1997, Automatic conversion of magnetic data to depth, dip, and susceptibility contrast using the SPI(TM) method. Geophysics. Vol. 62, pp. 807–813. https://doi.org/10.1190/1.1444190
9. Roest W. E., Verhoef J., Pilkington M. 1992, Magnetic interpretation using 3D analytic signal. Geophysics, vol. 57, pp. 116–125. https://doi. org/10.1190/1.1443174
10. Thompson D. T. 1982, EULDPH: A new technique for making computer‐assisted depth estimates from magnetic data. Geophysics, vol. 47, pp. 31–37. https://doi.org/10.1190/1.1441278
Шиманский С. В., Таршан А. / Известия УГГУ. 2019. Вып. 1(53). С. 7-17 16 Шиманский С. В., Таршан А. Basement configuration depth methods of airborne magnetic data in the eastern Gulf of Suez, Egypt // Известия УГГУ. 2019. Вып. 1(53). С. 7-17. DOI 10.21440/2307-2091-2019-1-7-17 The article was received on December 12, 2018
11. Reid A. B., Allsop J. M., Granser H., Millet A. J., Somerton I. W. 1990, Magnetic interpretation. Geophysics, vol. 55, pp. 80–91. https://doi. org/10.1190/1.1442774
12. Rabeh T., Khalil A. 2014, Characterization of fault structures in southern Sinai Peninsula and Gulf of Suez region using geophysical data. Environmental Earth Sciences, vol. 73, pp. 1925–1937. https://doi.org/10.1007/s12665-014-3541-x
13. Attia H. M., Ahmed M. A., Korrat I. M. 2015, Thermal maturation simulation and hydrocarbon generation of the Turonian Wata formation in Ras Budran oil field, Gulf of Suez, Egypt. Journal Environmental Sciences, vol. 44, pp. 57–92.
14. Afife M. M., Al-Atta M. A., Ahmed M. A., Issa G. I. 2016, Thermal maturity and hydrocarbon generation of the Dawi Formation, Belayim Marine Oil Field, Gulf Of Suez, Egypt: A 1D basin modeling case study. Arabian Journal of Geosciences, vol. 9, pp. 1–31. https://doi.org/10.1007/s12517- 016-2320-2
15. Azab A. A., El-khadragy A. A. 2013, 2.5-D gravity/magnetic model studies in Sahl El Qaa Area, Southwestern Sinai, Egypt. Pure and Applied Geophysics, vol. 170, pp. 2207–2229. https://doi.org/10.1007/s00024-013-0650-5



Лицензия Creative Commons
All articles posted on the site are available under the Creative Commons Attribution 4.0 Global License.