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Investigation of structurally controlled mineralisation in Bode-Saadu axis, southwestern Nigeria — a case study using magnetic data

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Abstract

An integrated geophysical and remote sensing study of ore (suspected gold) mineralisation potential of the Bode-Saadu area, southwestern Nigeria, has been conducted. Aeromagnetic data were used to infer subsurface geological features. In order to enhance the anomalies, delineate structural patterns and simplify the aeromagnetic data, first, vertical derivatives as well as horizontal gradient of the magnetic field data were performed using Oasis Montaj Software. The magnetic total field intensity anomaly map revealed that the magnetic field intensity values range from  -27.9 – 131.6 nT dominated by low magnetic intensity rock characteristic of quartzite and schists while high magnetic intensities were found in the southeast, northeast and northwest parts and underlain by granite and granite gneiss. Derivatives of the magnetic field intensity data revealed NE-SW (major) and NW-SE trending lineaments. These lineaments are possibly fractures which could serve as conduits through which hydrothermal fluids flow and then fill. The application of the aeromagnetic data in the Bode-Saadu area to predict zones which have the ability to host mineralisation has shown that the technique is effective and could be applied in regional studies to pick exploration targets for unknown ore deposits.

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Acknowledgements

The authors are indebted to Late Professor Peter I. Olasehinde, the second author, for his significant contributions toward this research.

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Authors and Affiliations

  1. Department of Geology and Mineral Sciences, University of Ilorin, Ilorin, Nigeria

    Samuel Abiodun Adebayo & Peter Ibikunle Olasehinde

  2. Department of Earth Sciences, Kogi State University, Anyigba, Nigeria

    Daniel Opemipo Obasaju

  3. Department of Earth Sciences, Anchor University, Lagos, Nigeria

    Oluwaseun Victoria Fatoye

  4. Department of Physical Science, Landmark University, Omuaran, Nigeria

    Esther Adetola Alejolowo

Authors
  1. Samuel Abiodun Adebayo
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  2. Peter Ibikunle Olasehinde
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  3. Daniel Opemipo Obasaju
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  4. Oluwaseun Victoria Fatoye
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  5. Esther Adetola Alejolowo
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Corresponding author

Correspondence to Daniel Opemipo Obasaju.

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The authors declare that they have no competing interests.

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Responsible Editor: Narasimman Sundararajan

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Adebayo, S.A., Olasehinde, P.I., Obasaju, D.O. et al. Investigation of structurally controlled mineralisation in Bode-Saadu axis, southwestern Nigeria — a case study using magnetic data. Arab J Geosci 14, 1243 (2021). https://doi.org/10.1007/s12517-021-07635-w

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  • DOI: https://doi.org/10.1007/s12517-021-07635-w

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