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Aeromagnetic and field data characterization of structural features for the delineation of potential gold mining sites in Northern Cameroon: a case study of Tchollire and environs

  • Research Article - Applied Geophysics
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Abstract

The processing of aeromagnetic data was carried out in Northern Cameroon, with the aim of delineating the structural features which may be associated with the gold occurrence. Hence, the Horizontal Gradient upward continued at 1, 3, 5, and 9 km, and Euler Deconvolution (using a structural index = 0), were applied in this study. As a result, contacts/faults were delineated from both methods. The solution depths of those contacts/faults were computed around 0.1–2.49 km from the Euler Deconvolution, with a good match with the contacts/faults obtained from the Horizontal Gradient upward continued at 1 km; the interpretation of the depth to the top and to the bottom of the Tchollire Banyo Shear Zone (TBSZ) was estimated between 0.1 and 0.49 km and > 4.5 km, respectively. Besides, the qualitative interpretation of the aeromagnetic data shows that the study area is characterized by contacts/faults trending in the NE–SW/ENE–WSW, E–W, and NW/SE–WNW–ESE directions which are consistent with the main structural directions observed in the field. Hence, the new structural framework was established from the aeromagnetic data processing results constrained with field data of Tchollire locality and environs; the structural deformation phases are defined by WNW–ESE to NW–SE foliation/schistosity linked to deformation phase D1, NE–SW/ENE–WSW regional foliation (D2), and E–W shear zones/contacts (D3). Furthermore, a proximal match was observed between both aeromagnetic lineaments and gold mining locations, suggesting a structural control of hydrothermal fluids linked to the gold mineralizations. Thus, the results of this study (lineaments and their depths) could serve as an important tool for prospective mining studies in Northern Cameroon.

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Acknowledgements

The data presented here form part of the first author's PhD thesis at the University of Maroua (Cameroon). The authors wish to thank Dr. Julien Bernard, Geologist, at BRGM (Bureau for Geological and Mining Research, France) for his assistance during field studies and the reviewers for their comments towards the improvement of the paper.

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Authors and Affiliations

  1. Department of Earth Sciences, Faculty of Science, University of Maroua, Maroua, Cameroon

    Quentin Marc Anaba Fotze & Marcelin Bikoro Bi-Alou

  2. Centre for Geological and Mining Research, Garoua, Cameroon

    Quentin Marc Anaba Fotze, Mary Immaculate Neh Fru, David Ikome Lyonga & Grace Nissia Rodo

  3. Faculty of Science, University of Garoua, Garoua, Cameroon

    Farida Palai

  4. Department of Geology, Faculty of Science, University of Buea, Buea, Cameroon

    Anatole Eugene Djieto Lordon & Mary Immaculate Neh Fru

  5. Postgraduate School of Sciences, Technologies and Geosciences, University of Yaoundé I, Yaoundé, Cameroon

    Théophile Ndougsa-Mbarga

  6. Department of Physics, Advanced Teacher’s Training College, University of Yaoundé I, Yaoundé, Cameroon

    Théophile Ndougsa-Mbarga

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  1. Quentin Marc Anaba Fotze
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Correspondence to Quentin Marc Anaba Fotze.

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Edited by Prof. Teresa Grabowska (ASSOCIATE EDITOR) / Prof. Gabriela Fernandez Viejo (CO-EDITOR-IN-CHIEF).

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Anaba Fotze, Q.M., Palai, F., Bi-Alou, M.B. et al. Aeromagnetic and field data characterization of structural features for the delineation of potential gold mining sites in Northern Cameroon: a case study of Tchollire and environs. Acta Geophys. 72, 1637–1659 (2024). https://doi.org/10.1007/s11600-023-01166-6

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