Lineament mapping of structural-trend analysis over the Niger-Benue River-confluence and its environs, a case study of North-Central Nigeria

Evaluation, analysis and interpretation of aeromagnetic satellite imagery data acquired over the Nigeria confluence environs; Northcentral were carried out in order to characterise structural framework study area. Fourier domain digital filtering tools reduction magnetic equator (RTE) operations achieved enhance available data’s results. The geomagnetic field earth was removed from using IGRF- 12 model. Results 2D radially average power spectrum enhanced estimate depth sources as 20m. Several image enhancement techniques such edge general contrast stretching applied after which lineaments extracted images mapped on-screen ArcMap 10.8. RTE map showed a high intensity values ranging 33051. 93 nT 33165.3 trend approximately E -W direction at eastern northwestern parts. elevation model (DEM) environs used geomorphic features. orientation obtained that primary bearing is NE – SW, ENE -WSW NNW SSE directions derived maps are aligned along SW NW SE. This conforms structures produced by Pan African events.