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Geophysical Investigation Of Iwo And Ilesha, Osun State Using High Resolution Aeromagnetic Data

Author

Listed:
  • John Akor Yakubu

    (Department of Physics and Astronomy, University of Nigeria, Nsukka, Enugu State, Nigeria.)

  • Friday Egbunu

    (Department of Physics Kogi State University Anyigba)

  • Ngozi Agatha Okwesili

    (Department of Physics and Astronomy, University of Nigeria, Nsukka, Enugu State, Nigeria.)

  • Igwe Emmanuel Awucha

    (Department of Physics and Astronomy, University of Nigeria, Nsukka, Enugu State, Nigeria.)

  • Ngozi MariamRita Ossai

    (Department of Physics and Astronomy, University of Nigeria, Nsukka, Enugu State, Nigeria.)

Abstract

The study deals with the Geophysical investigation of Iwo and Ilesha, Osun State, using aeromagnetic data. Qualitative as well as quantitative interpretation of the aeromagnetic data were carried out to obtain more information about the thickness of sedimentary basins. Two methods were used in the interpretation; there are Euler deconvolution method and source parameter imaging (SPI). Oasis Montaj software was employed in the analysis, the Magnetic intensity ranges from a minimum value of -22.7 nT to a maximum value of 110.4 nT, this indicate that the area is characterised with low and high magnetic signature and could be as a result of difference in magnetic susceptibility, depth and the nature of the magnetic anomalous bodies present. The depth for magnetic source ranges from 187.6 to 1005.5 m using parameter imaging (SPI).Using Euler deconvolution method, the depth estimation for structural index (SI = 0.5, 1.0, 1.5) ranges from 300 m to 25481m, 262.9m to 1826.2m and 391.0m to 3243.6m respectively. The results obtained indicate shallow depths to magnetic anomalies which may not be suitable for hydrocarbon accumulation.

Suggested Citation

  • John Akor Yakubu & Friday Egbunu & Ngozi Agatha Okwesili & Igwe Emmanuel Awucha & Ngozi MariamRita Ossai, 2023. "Geophysical Investigation Of Iwo And Ilesha, Osun State Using High Resolution Aeromagnetic Data," Geological Behavior (GBR), Zibeline International Publishing, vol. 7(2), pages 69-74, August.
    • Handle: RePEc:zib:zbngbr:v:7:y:2023:i:2:p:69-74
    DOI: 10.26480/gbr.02.2023.69.74
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