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Estimation of Curie Point Depth and Heat Flow Using High-Resolution Aeromagnetic Data: A Case Study of Part of the Lower Benue Trough, Nigeria
Subject area: Science,Engineering and Technology · Area of research: Applied Geophysics
Abstract
This study investigates the geothermal potential of part of the Lower Benue Trough, Nigeria, using high-resolution aeromagnetic data from Sheet 269 (Ankpa). Magnetic anomalies were analyzed to estimate Curie Point Depth (CPD) and terrestrial heat flow, which are vital indicators of subsurface thermal conditions. The CPD values range from 9.2 km to 17.6 km, with shallower depths and elevated heat flow, up to 171.0 mW/m?, observed in the central and southern regions, particularly around Imane, Efofo, and Ogene, indicating promising zones for geothermal exploration. Conversely, deeper CPD and lower heat flow values in the northwest and northeast suggest thermally stable zones. These findings delineate promising geothermal areas and contribute valuable insights for sustainable energy development in the region.
Keywords
Lower Benue Trough, Geothermal potential, Curie point depth, Terrestrial heat flow
References
[1] Akinnubi, T. D. and Adetona, A. A. (2018): Investigation Of The Geothermal Potential Within Benue State, Central Nigeria, From Radiometric And High Resolution Aeromagnetic Data. Nigerian Journal of Physics (NJP) 27(2).
[2] Tselentis, G A (1991): An attempt to define curie depths in Greece from aeromagnetic and heat flow data. PAGEOPH 136:87–101
[3] Udegbe S.U, Ezema .P.O, Chima,A.I , Ikechukwu.A . and Chime P.I (2017): Interpretation of Aeromagnetic Data over Ankpa and Nsukka Areas of Lower Benue Trough Nigeria. IJSAR Journal of Life and Applied Sciences (IJSAR-JLAS) ISSN: 2408-7610 Volume 4, Issues 4, 144-157 http://www.mdcjournals.org/ijsar-jlas...html
[4] Ijeh, I. B., Omeje, M., Onyeujo, O. F., Joel, E. S., Adewoyin, O. O., and Olawole, C. O. (2019). Mapping of Lineament Structures from Aeromagnetic and Landsat Data Over Ankpa Area of Lower Benue Trough, Nigeria. Open Physics, 17(1), 678–686. https://doi.org/10.1515/phys-2019-0070
[5] Yakubu, J. A., Agbedo, J. C. and Ossai, N.M. (2020): Geophysical Investigation To Estimate The Curie Point Depth, Heat Flow And Geothermal Gradient In Soko And Ankpa, Benue Trough Nigeria. Malaysian Journal of Geosciences (MJG) DOI: http://doi.org/10.26480/mjg.02.2020.86.89
[6] Akpan, O., Nyblade, A., Okereke, C., Oden, M., Emry, E., Julià, J., 2016. Crustal structure of Nigeria and Southern Ghana, West Africa from P-wave reciever functions. Tectonophysics 676, 250-260.
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How to cite this paper
@article{1708776,
author = {Ojo Olufemi Felix, Ewumi Taofik Olubunmi, Rotimi Isaac Ayodele},
title = {Estimation of Curie Point Depth and Heat Flow Using High-Resolution Aeromagnetic Data: A Case Study of Part of the Lower Benue Trough, Nigeria},
journal = {Iconic Research And Engineering Journals},
year = {2025},
volume = {8},
number = {11},
pages = {2260-2266},
issn = {2456-8880},
url = {https://www.irejournals.com/formatedpaper/1708776.pdf},
abstract = {This study investigates the geothermal potential of part of the Lower Benue Trough, Nigeria, using high-resolution aeromagnetic data from Sheet 269 (Ankpa). Magnetic anomalies were analyzed to estimate Curie Point Depth (CPD) and terrestrial heat flow, which are vital indicators of subsurface thermal conditions. The CPD values range from 9.2 km to 17.6 km, with shallower depths and elevated heat flow, up to 171.0 mW/m?, observed in the central and southern regions, particularly around Imane, Efofo, and Ogene, indicating promising zones for geothermal exploration. Conversely, deeper CPD and lower heat flow values in the northwest and northeast suggest thermally stable zones. These findings delineate promising geothermal areas and contribute valuable insights for sustainable energy development in the region.},
keywords = {Lower Benue Trough, Geothermal potential, Curie point depth, Terrestrial heat flow},
month = {May},
}