Investigation of geothermal potential of the Dahomey basin, Nigeria, through analysis of geomagnetic and geo-resistivity dataset

A Short Review on The Application of Potential Field Methods for Geothermal Energy Exploration

“…Results from the Benue Trough showed some promising zones for development of geothermal systems(Nghargbu et al 2017). The geothermal prospect of the Benue Trough could corroborate the promising zones that were mapped byOladele et al (2022) in Dahomey Basin for development of geothermal energy in Nigeria. settings in Nigeria; current security challenges in the country; time and high-cost of geophysical fieldwork required to acquire data for geothermal exploration.…”

“…The geo-resistivity results of the Dahomey Basin showed that the thermal aquifer (that is, a sandy zone with resistivity values varying from 1 to 20 Ωm) is vertically housed between 155 and 210 m within the crust. It was revealed that Dahomey Basin is thermally unstable, with a massive prospectivity for geothermal energy resource (Oladele et al 2022). Other applications of the potential field data could be found in Joel et al ( 2019), (2020), Oladejo et al (2019) and.…”

“…A range of 9.8 to 19.3 km was obtained as the Curie point depth, 26.5 to 35.8 km was obtained as the crustal thickness (depth to Moho), 29.0 to 45.0 °Ckm -1 as the geothermal gradient and 52.2 to 101.5 mWm -2 , being the subsurface heat flow of the SE Nigeria. The potential field investigation over Dahomey Basin in the SW Nigeria revealed that the Curie point depth, heat flow and geothermal gradient varied from 11.0 to 27.0 km, 53.0 to 130.0 mWm -2 and 21.0 to 52.0 °Ckm -1 , respectively (Oladele et al 2022). The geo-resistivity results of the Dahomey Basin showed that the thermal aquifer (that is, a sandy zone with resistivity values varying from 1 to 20 Ωm) is vertically housed between 155 and 210 m within the crust.…”