Aeromagnetic data of the Ikogosi warm spring region was used to calculate the basal depth of the magnetic layer (Curie point depth) in the region. The warm spring issues from a crossing of fractures from a metasedimentary suite of Effon Psammite formation which form part of the Precambrian basement complex in Nigeria.

This study presents the first comprehensive geomagnetic investigation of subsurface mineral potentials in north-central Nigeria, marking a significant advancement in sustainable mining exploration for this resource-rich region. Through an integrated approach using Source Parameter Imaging (SPI), Analytic Signal (AS), Phase Symmetry (PS), Euler Deconvolution (ED), and 3D inversion modeling, we delineate mineralized zones at depths of 150–800 m. The analysis reveals NE-SW, NW-SE, and E-W fault and fracture networks that channel mineral-rich fluids, offering new insights into regional tectonics and mineralization processes. The integration of ED with 3D inversion modeling provides reliable estimates of the location, depth, and geometry of magnetic sources, enhancing the targeting of potential ore bodies and reducing exploration risks. Our findings on structural controls and depth targeting support low-impact mining and efficient resource development in the region.

We present results and a technique for imaging the subsurface structures of a geothermal field with particular focus on the Ikogosi geothermal field in Nigeria. The intent was to provide an understanding of the subsurface structural setup in the region and assess its viability for further geothermal resources exploitation. High-resolution aeromagnetic and gravity data were used for the study. A constrained 2D forward modelling technique was applied to these datasets to map the shape and corresponding depths of geologic structures in the region. This study has gone deeper to ascertain the basement structure and configurations and how it influences the heat source of the Ikogosi Warm Spring (IWS) region. The dominant host quartzite rock unit at the IWS location reaches average depths of 2.5–3.0 km and is located directly on an intruded high-density geologic formation in the subsurface. Fault structures traversing the IWS source have also been uncovered. We infer that these structural setups are central to the geothermal system of the IWS. Valid reflection responses from the profile model have been retrieved from randomly induced noise sources, using a passive seismic interferometry technique. Pre-stack depth migration of the reflected responses suitably imaged the reflectors within the subsurface of the IWS region, tracing fault boundaries and delineating intruded geological structures. This has provided pre-survey insights into the subsurface seismic imagery of the region. Results derived from this study could assist informed decision making regarding geothermal exploration and exploitation in the region.