Journal of Emerging Trends in Engineering and Applied Sciences: Research Areas

Article Title: Bedrock Depth Estimates From Vertical Derivatives of the Ground Magnetic Studies around Ilesa Area, Southwestern
by Kayode, J. S., Adelusi, A.O. and Nyabeze, P. K.

Abstract:
A Vertical component of ground magnetic intensities was recorded for part of Ilesa town in Osun State, Southwestern Nigeria using a Proton Precision geometric magnetometer along fifteen traverses. This research focused on delineation of geologic structures in this part of the schist belt. The field data was qualitatively and quantitative interpreted which gives information on wide range of magnetic intensities values over the different rock types in the area. In order to prepare the data for interpretations, the Vertical Magnetic Intensity (VMI) was further enhanced using filtering techniques such as Reduced to Pole (RTP), Vertical Derivative (VD) and Band Pass (BP). Quantitative interpretation methods are used to estimate source depths and widths. The Analytical Signal (ANSIG) is symmetrical as the dip varies. The results generated were used to construct geomagnetic sections and Vertical derivatives map from where rock boundaries and bedrock topography useful for solid minerals prospecting were delineated. __________________________________________________________________________________________ Keywords:

Keywords: magnetic intensity, residual ground magnetic, geomagnetic sections, vertical derivatives, Ilesa

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