Aeromagnetic data were employed to assess the tectonic stability of Geregu, one of the proposed sites for Nigeria’s nuclear power plant construction. This study utilized High Resolution Aeromagnetic (HRAD) data processed through horizontal gradient magnitude (HGM), analytic signal amplitude (ASA), and 3-D Euler Deconvolution, to generate lineament maps for evaluating regional tectonic stability. The map of the Total Magnetic Intensity indicates values ranging from ?106.2 nT to 179.7 nT. Analysis reveals that the northwestern, western, and southwestern regions exhibit short-wavelength anomalies superimposed on longer wavelength features. The analysis identified 161 magnetic lineaments corresponding to deep crustal structures and shallow expressions. The region is characterized by a strong magnetic response with structural trends along the directions of ENE-WSW, NE-SW, E-W, and NNE-SSW. Qualitative interpretation confirms that the most dominant structural trend is ENE-WSW, followed by NE-SW and E-W orientations. Twenty-one magnetic lineaments were classified as faults, with fault F1 traversing the Geregu site at depths between 500 - 1500 m. Despite this proximity, no evidence of recent tectonic activity was found, indicating the area has remained tectonically stable and poses minimal seismic risk.
Cite this paper
Adesope, A. P. , Eluyemi, A. A. , Adeoti, F. O. , Adetokunbo, P. , Omoseyin, T. , Arogundade, A. B. , Albert, O. A. , Olorunfemi, A. O. and Awoyemi, M. O. (2026). Airborne Geophysical Investigation of the Tectonic Stability of Geregu North Central Nigeria for Vulnerable Construction. Open Access Library Journal, 13, e13777. doi: http://dx.doi.org/10.4236/oalib.1113777.
Eluyemi, A.A., Ibitoye, F.I. and Baruah, S. (2020) Preliminary Analysis of Probabilistic Seismic Hazard Assessment for Nuclear Power Plant Site in Nigeria. <i>Scientific</i> <i>African</i>, 8, e00409. <br>https://doi.org/10.1016/j.sciaf.2020.e00409
Wu, Z. and Hu, M. (2024) Definitions, Classification Schemes for Active Faults, and Their Application. <i>Geosciences</i>, 14, Article 68. <br>https://doi.org/10.3390/geosciences14030068
Eluyemi, A.A., Baruah, S., Sharma, S. and Baruah, S. (2019) Recent Seismotectonic Stress Regime of Most Seismically Active Zones of Gulf of Guinea and Its Kinematic Implications on the Adjoining Sub-Sahara West African Region. <i>Annals</i> <i>of</i> <i>Geophysics</i>, 62, SE564. <br>https://doi.org/10.4401/ag-7877
Mukherjee, M., Abhinay, K., Rahman, M.M., Yangdhen, S., Sen, S., Adhikari, B.R., <i>et al</i>. (2023) Extent and Evaluation of Critical Infrastructure, the Status of Resilience and Its Future Dimensions in South Asia. <i>Progress</i> <i>in</i> <i>Disaster</i> <i>Science</i>, 17, Article 100275. <br>https://doi.org/10.1016/j.pdisas.2023.100275
Walker, R.T. (2006) A Remote Sensing Study of Active Folding and Faulting in Southern Kerman Province, S.E. Iran. <i>Journal</i> <i>of</i> <i>Structural</i> <i>Geology</i>, 28, 654-668. <br>https://doi.org/10.1016/j.jsg.2005.12.014
Arlegui, L.E. and Soriano, M.A. (1998) Characterizing Lineaments from Satellite Images and Field Studies in the Central Ebro Basin (NE Spain). <i>International</i> <i>Journal</i> <i>of</i> <i>Remote</i> <i>Sensing</i>, 19, 3169-3185. <br>https://doi.org/10.1080/014311698214244
Ajibade, A.C., Woakes, M. and Rahaman, M.A. (1987) Proterozoic Crustal Development in the Pan-African Regime of Nigeria. In: Kroner, A., Ed., <i>Geodynamics</i> <i>Series</i>, American Geophysical Union, 259-271.
Oyawoye, M.O. (1972) The Basement Complex of Nigeria. In: Dessauvagie, T.F.J. and Whiteman, A.J., Eds., <i>African Geology</i>, University of Ibadan Press, 66-102.
Rahaman, M.A. (1988) Recent Advances in the Study of the Basement Complex of Nigeria. In: Oluyide, P.O., Ed., <i>Precambrian Geology of Nigeria</i>, Geological Survey of Nigeria Publication, 11-43.
Rahaman, M.A. (1976) Review of Basement Geology of Southwestern Nigeria. In: Kogbe, C.A., Ed., <i>Geology of Nigeria</i>, 2nd Edition, Elizabethan Publishers, 41-58.
