Unveiling the subsurface geological structure of the centre region, cameroon, with aeromagnetic data analysis

This study made use of aeromagnetic data analysis to identify potential geological structures in the magnetic field and map subsurface geological structure, which could serve as potential resources in the Centre Region of Cameroon. The satellite aeromagnetic dataset used was acquired from the Earth Magnetic Anomaly Grid 2 (EMAG2). The application of Reduction to Magnetic Equator (RTE) filter was to remove asymmetries in the data and position the peaks of magnetic anomalies directly over their sources. Low magnetic zones indicated by blue colours from the total magnetic fields possibly reveal the sedimentary intrusions into the area, moderate magnetic regions having green, yellow and red colourations suggest metamorphic rocks and the Northeastern portion of the maps indicated with pink colours correlate to the basement rocks in the study area. Derivative filters and Euler deconvolution technique were applied as enhancement techniques to accentuate the inferred linear subsurface structures interpreted as contacts, fractures, lineaments, as well as their depths using a structural index of N = 0. These structures served as predicted mineral entrapments or contact/fault lines whose NE-SW orientation conforms to the Pan African Orogeny with depths of around 2.0 km.