Geophysical Interpretation of Obudu Area, Cross River State, Southeastern Nigeria Using Aeromagnetic Data

geological features within the study region, the aeromagnetic data
obtained from the Obudu area in southeast Nigeria was enhanced
using precise methodologies, such as the Horizontal derivative
(HD), first vertical derivative (FVD), and second vertical derivative
(SVD). The process of separating the regional and residual
aeromagnetic data information involved applying the polynomial
fitting algorithm prior to filtering. The depth to magnetic sources
was estimated using the usual Euler deconvolution approach. The
studied area is characterized by fluctuations in aeromagnetic
signals, indicating alterations in the magnetic susceptibilities of the
underlying sedimentary and basement rocks based on the available
information derived from the interpreted data. The filtered
aeromagnetic maps may exhibit lineaments that exhibit movement
along the NE-SW and NW-SE directions. The depths at which
anomalies arise from structural complexities were assessed by Euler
configurations within the vertical range of 0 to 2100 meters. The
presence of a low sedimentation thickness and a high density of
lineaments within the studied area suggests a potential correlation
between the identified geological formations and hydrothermal
mineralization.