Ground Magnetic Prospecting Of Precambrian Basement Rocks in Akoko
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Advances in technique development and data interpretation have greatly improved our ability to visualize the subsurface. A Magnetic survey was carried out at Ayegunle Akoko, Supare Akoko and Akungba Akoko in Ondo state Southwestern Nigeria, using a proton precession magnetometer (GSM-19T). A total of ten traverses were established in an SE-NW, E-W, SW/NE direction in the study areas. The acquired magnetic field data were corrected for drift. Qualitative and quantitative interpretations were adopted to obtain negative peak value and the maximum positive peak value. The contour maps, 3-D surface...
Advances in technique development and data interpretation have greatly improved our ability to visualize the subsurface. A Magnetic survey was carried out at Ayegunle Akoko, Supare Akoko and Akungba Akoko in Ondo state Southwestern Nigeria, using a proton precession magnetometer (GSM-19T). A total of ten traverses were established in an SE-NW, E-W, SW/NE direction in the study areas. The acquired magnetic field data were corrected for drift. Qualitative and quantitative interpretations were adopted to obtain negative peak value and the maximum positive peak value. The contour maps, 3-D surface map and the 1-grid vector map present the subsurface image. The survey perimeters of Ayegunle Akoko has a total length of 1800 m at a line spacing of 10 m and a breadth of 45 m at 5 m spacing; Supare Akoko has a total length of 1500 m at a line spacing of 10 m while Akungba Akoko has a total length of 1700 m at a line spacing of 10 m. The whole area was characterized by complete varying negative amplitudes from a very low peak value of about -0.997-0.084 nT and a maximum positive peak value of about 48.137-97.047 nT respectively. The closely spaced, linear orientations suggest fractures.
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