Delineation of Lithology-based Radiogenic Heat Production from the Analysis of Airborne Radiometric Data of Azara and Environs, North-Central Nigeria

Sunday Ogayi  Egede; Oke Israel  Okwokwo; John Mathew  Sawuta; Fidelis Iorzua Kwaghhua; Adegoke Blessing  Adekemi; Taiwo  Adewumi

doi:10.62050/ljsir2026.v4n1.755

Delineation of Lithology-based Radiogenic Heat Production from the Analysis of Airborne Radiometric Data of Azara and Environs, North-Central Nigeria

Authors

Egede O. Sunday
Department of Physics, Federal University of Lafia, Nigeria
Okwokwo I. Oke
Department of Physics, University of Abuja, FCT, Nigeria
https://orcid.org/0000-0003-3451-7545
Sawuta M. John
National Space Research and Development Agency, NASRDA, Abuja, Nigeria
Kwaghhua I. Fidelis
fidelisik@gmail.com

Department of Geophysics, Federal University of Technology, Minna, Nigeria
https://orcid.org/0009-0003-5954-9073
Adekemi B. Adegoke
Department of Physics, Federal University of Lafia, Nigeria
Adewumi Taiwo
Department of Physics, Federal University of Lafia, Nigeria
https://orcid.org/0000-0002-5936-4285

Keywords:

Array, Array, Array, Array, Array

Abstract

This study offers new insights into naturally occurring radioactive minerals in the Azara area and its environs, focusing on their impact on radiogenic heat production (RHP) for exploration geothermal energy. The radiometric data were analysed in relation to the lithology of the study area to determine the contribution of each lithologic unit to the estimated RHP. The study assessed radioelement concentrations, spatial distributions, and statistical summaries for each lithologic unit. Using radiometric data, the study mapped and analysed the spatial occurrence of potassium (K), thorium (eTh), and uranium (eU). The results show average concentrations of 1.23 % for K, 12.15 ppm for eTh, and 3.38 ppm for eU. Compared with crustal averages, K levels were lower, while eTh and eU levels were slightly higher. Radioelement abundance varied across rock types, with the highest concentrations in shales, siltstones, and sandstones. Estimated RHP values ranged from 0.90 to 2.70 uWm⁻³, with an average of 1.70 uWm⁻³. The estimated RHP value falls within the typical crustal range but is below the 4.0 uWm⁻³ threshold for a viable geothermal energy source.

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REFERENCES

Abbady, A. G. (2010). Evaluation of heat generation by radioactive decay of sedimentary rocks in Eastern Desert and Nile Valley, Egypt. Applied Radiation and Isotopes, 68(10), 2020-2024.

Aisabokhae, J., & Adeoye, M. (2020). Spatial distribution of radiogenic heat in the Iullemmeden basin–Precambrian basement transition zone, NW Nigeria. Geology, Geophysics and Environment, 46(3), 239-250.

Faweya, E. B., Agbetuyi, O. A., Talabi, A. O., Adewumi, T., & Faweya, O. (2021). Radiological Implication of 222 Rn Concentrations in Waters from Quarries Environs, Correlation with 226 Ra Concentrations and Rocks Geochemistry. Arabian Journal of Geosciences, 14, 1-15.

Reinhardt, N., & Herrmann, L. (2019). Gamma‐ray spectrometry as versatile tool in soil science: A critical review. Journal of Plant Nutrition and Soil Science, 182(1), 9-27.

Megwara, J. U., Udensi, E. E., Olasehinde, P. I., Daniyan, M. A., & Lawal, K. M. (2013). Geothermal and radioactive heat studies of parts of southern Bida basin, Nigeria and the surrounding basement rocks. Int J Basic Appl Sci, 2(1), 125-139.

Sedara, S. O., & Ojoawo, A. I. (2018). Ground Radiometric Survey and Geothermal Energy Investigation In Ikogosi Warm Spring, Ekiti, Southwestern Nigeria. Journal of Science Research, 17(1), 53-61.

Clauser, C. (2021). Radiogenic heat production of rocks. In Encyclopedia of solid earth geophysics (pp. 1304-1310). Cham: Springer International Publishing.

Adewumi, T., Salako, K. A., Akingboye, A. S., Muztaza, N. M., Alhassan, U. D., & Udensi, E. E. (2023). Reconstruction of the subsurface crustal and radiogenic heat models of the Bornu Basin, Nigeria, from multi-geophysical datasets: Implications for hydrocarbon prospecting. Advances in Space Research, 71(10), 4072-4090.

Adetona Adebayo, A., Abdulwaheed Adewuyi, R., Aliyu Bukola, S., John M, K., & Kwaghhua I, F. (2024). Estimating the heat flow, Geothermal Gradient and Radiogenic Heat within the Young Granites of Jos Plateau North Central Nigeria. Journal of Earth and Space Physics. 49 (4), 69- 81

McCay, A. T., Harley, T. L., Younger, P. L., Sanderson, D. C., & Cresswell, A. J. (2014). Gamma-ray spectrometry in geothermal exploration: State of the art techniques. Energies, 7(8), 4757-4780.

Salako, K. A., Adetona, A. A., Alhassan, U. D., & Rafiu, A. A. (2020). Assessment of Geothermal Potential of Parts of Middle Benue Trough, North-East Nigeria.

Akingboye, A. S., Ogunyele, A. C., Jimoh, A. T., Blessing, O., Adedapo, A., Adeola, O., & Ajayi, T. (2021). Radioactivity , radiogenic heat production and environmental radiation risk of the Basement Complex rocks of Akungba ‑ Akoko , southwestern Nigeria : insights from in situ gamma ‑ ray spectrometry. Environmental Earth Sciences, 1–24. https://doi.org/10.1007/s12665-021-09516-7

Jaupart, C., & Mareschal, J. C. (2021). Radiogenic heat production in the continental crust. In Encyclopedia of Solid Earth Geophysics (pp. 1298-1303). Cham: Springer International Publishing.

Faweya, E. B., Ayeni, M. J., Olowomofe, G. O., & Akande, H. T. (2018). Estimation of radiation exposure in soils and organic (animal) and inorganic (chemical) fertilizers using active technique. International Journal of Environmental Science and Technology, 15(9), 1967-1982.

El Gendy, N. H., El Deen, T. M. S., Elkhodary, S. T., Sabra, M. E. M., & Youssef, M. A. S. (2024). Environmental impact assessement and determination of radiogenic heat production in the North Jabal Maghrabiyah area, Central Eastern Desert, Egypt. Applied Radiation and Isotopes, 211, 111398.

IAEA. (2003). mapping using gamma ray. July.

Bertulani, C. A. (2007). Nuclear physics in a nutshell.

Lawson, R. (n.d.). An Introduction to Radioactivity by. October 1999, 1–20.

Kratz, J. V. (2022). Nuclear and radiochemistry: Fundamentals and applications. John Wiley & Sons.

Unit, I. (1967). Nuclear structure.

L'Annunziata, M. F. (Ed.). (2012). Handbook of radioactivity analysis. Academic press.

Aliyu, U. S. A., Hamza, A. M., & Usman, A. M. (2019). Radiometric Evaluation of Radionuclides in Some Selected Mining Sites across Azara Development Area of Nasarawa State, Nigeria. Journal of Science and Mathematics Letters, 8(1), 27-36.

Aladesanmi, A. O., Ogundana, A. K., Olowookere, A. A., & Jenakumo, L. (2018). Geological characterization of azara barite mineralization, Middle Benue Trough Nigeria. J Environ Earth Sci, 8(3), 44-46.

Offodile, M. E. (1984). The geology and tectonics of Awe brine field. Journal of African Earth Sciences (1983), 2(3), 191-202.

Rybach, L. (1976). Radioactive heat production in rocks and its relation to other petrophysical parameters. Pure and Applied Geophysics, 114, 309-317.

Faweya, E. B., Olojede, D. S., Adewumi, T., & Ikubanni, S. O. (2023). Radiogeochemistry, mineralogy, lithology, radiogenic heat production, and health implication using airborne radiometric data of Ilesha and its surroundings. Environmental Monitoring and Assessment, 195(5). https://doi.org/10.1007/s10661-023-11168-y

Abdel-Karim, A. A. M., Zaid, S. M., Moustafa, M. I., & Barakat, M. G. (2016). Mineralogy, chemistry and radioactivity of the heavy minerals in the black sands, along the northern coast of Egypt. Journal of African Earth Sciences, 123, 10-20.

Fares, S. (2017). Measurements of natural radioactivity level in black sand and sediment samples of the Temsah Lake beach in Suez Canal region in Egypt. Journal of radiation research and applied sciences, 10(3), 194-203.

Alshahrani, B., Fares, S., Salman, M., & Korna, A. H. (2025). Assessment of natural radioactivity levels in black sand and sand sediments in the Mediterranean coast region, Egypt. Environmental Challenges, 18, 101061.

Liao, D., Feng, D., Luo, J., & Yun, X. (2023). Relationship between radiogenic heat production in granitic rocks and emplacement age. Energy Geoscience, 4(4), 100157.

Adewumi, T., Faweya, B. E., Abimbola, O. J., Zemnaan, Y. C., Mohammed, M. A., & Kwaghhua, F. I. (2025). Radiological hazard assessment and radiogenic heat production of Keffi and its environs: insight from the analysis of airborne gamma-ray spectrometry data. Environmental Monitoring and Assessment, 197(9), 995.

Bajoga, A. D., Al-Dabbous, A. N., Abdullahi, A. S., Alazemi, N. A., Bachama, Y. D., & Alaswad, S. O. (2019). Evaluation of elemental concentrations of uranium, thorium and potassium in top soils from Kuwait. Nuclear Engineering and Technology, 51(6), 1638-1649.

Liang, H., Yin, F., Zhang, J., Zhang, J., Zhao, Y., Zhao, T., ... & Wang, Z. (2025). Impacts of long-term drip irrigation on K-bearing mineral weathering and microbial potassium mobilization in arid cotton systems. Agricultural Water Management, 322, 110000.

Orozova-Bekkevold, I. (2024). In-situ radiogenic heat production in the Cenozoic sediments of the North sea. Physics and C

Bakar Yusuf, A., San Lim, H., & Abir, I. A. (2023). Radiogenic heat production estimation towards sustainable energy drive in northeastern Nigeria. Heliyon, 9(6).

Bubu, A. (2017). Radiogenic heat production due to natural radionuclides in the sediments of Bonny River, Nigeria. Journal of Scientific Research and Reports.

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Published

2026-03-04

How to Cite

Delineation of Lithology-based Radiogenic Heat Production from the Analysis of Airborne Radiometric Data of Azara and Environs, North-Central Nigeria. (2026). Lafia Journal of Scientific and Industrial Research, 4(1), 93-101. https://doi.org/10.62050/ljsir2026.v4n1.755