Integrated Aerogeophysical Methods For Litho-structural Characterisation And Radiological Hazard Assessment Of Parts Of The Igarra Schist Belt, Southwestern Nigeria

ABSTRACT Integrated aerogeophysical datasets (aeromagnetic and airborne radiometric) were used for the litho-structural and depth characterisation and to assess the environmental radiation risks in part of Igarra, southwestern Nigeria. The total magnetic intensity (TMI) reduced to the magnetic equator gridded data were enhanced using first vertical derivative, analytic signal, tilt derivative, and spectral and Euler deconvolution analyses to improve and enhance the subsurface rocks’ textural complexities and subtle features. The results were then integrated with radionuclides concentration, ra…