Aeromagnetic Data Investigation of Geothermal Energy Potentials in Ramfashi and Environs Zamfara State, Nigeria

Abstract

The goal of the geothermal study over Ramfashi and Environs in Northwestern Nigeria was to use aeromagnetic data to determine the region's heat flow, geothermal gradient, and Curie point depth. For the purpose of analyzing the aeromagnetic data, on residual and regional magnetic intensity were gathered using regional residual separation. The residual data was upward continuued to obtain the upward data to perform spectral analysis. This allowed for calculation of depths to centroid and top boundary, which in turn allowed for calculation of region's heat flow, geothermal gradient, and Curie point. The analysis's conclusions revealed that, with an average value of 48.53 °Ckm-1, the distances to the heat flow, top boundary, centroid, and Curie point varied between 6.73 km and 7.39 km, 2.01 km and 2.16 km, and 113.55 mWm-2 and 128 mWm-2 respectively. Geothermal gradient also varied between 45.42 °Ckm-1 and 51.33 °Ckm-1. According to the heat flow data from this investigation, the area possesses anomalous geothermal energy and a sizable heat source.