Contribution of Aeromagnetic Data to the Structural Discontinuities Identification of Black Volta Catchment Aquifer System in Côte d'Ivoire

Armel Kouadio Kouame; Marc Youan Ta; Bertrand Houngnigbo Akokponhoue; Omer Zéphir De Lasme; Loukou Nicolas Kouamé

doi:10.19044/esj.2023.v19n30p307

Armel Kouadio Kouame Laboratory of Soil, Water and Geomaterials Sciences, Training and Research Unit of Earth, Sciences and Mineral Resources, University Felix HouphouetBoigny, Abidjan, Côte d’Ivoire
Marc Youan Ta University Research Center of Remote Sensing and Application (CURAT), Training and Research Unit of Earth Sciences and Mineral Resources, University Felix Houphouet-Boigny, Abidjan, Côte d’Ivoire
Bertrand Houngnigbo Akokponhoue Laboratoire of Applied Hydrology, National Water Institute (INE), University of Abomey-Calavi, Cotonou, Benin
Omer Zéphir De Lasme Department of Geosciences, Training and Research Unit, University Péléforo Gon Coulibaly, Korhogo, Côte d’Ivoire
Loukou Nicolas Kouamé Laboratoire de Géologie, Ressources Minérales et Energétique, UFR Sciences de la Terre et des Ressources Minières(STRM), Université Félix Houphouët Boigny, Abidjan, Côte d’Ivoire

DOI: https://doi.org/10.19044/esj.2023.v19n30p307

Keywords: Aeromagnetic, Gesosoft Oasis Montaj, Euler Deconvolution, Structural Map, Filtering, Black Volta Catchment

Abstract

This paper focuses on improving the structural knowledge of the fissured aquifers of the Black Volta catchment in Côte d'Ivoire based on the mapping of magnetic lineaments, which represent magnetic discontinuities such as magmatic body contacts or tectonic faults. Four filtering methods, pole reduction (equator), gradient (vertical and hori-zontal), upward extension, and angle tilt, were applied to the residual magnetic field map to extract magnetic discontinuities while using the Oasis Montaj (Geosoft) program. Euler deconvolution coupled with the analytical signal provided, in addition to the horizontal location of the magnetic contacts, is an indication of their depths. The resulting structural map contains 458 structures, with lengths ranging from 9.03 to 66.54 km. Three directions, NW-SE, E-W and NE-SW, were detected with a predominance of the NW-SE direction. Depths estimated by Euler solutions range from 6.8 to 2847 m. This map is consistent with many faults already recognised or assumed by traditional structural studies and tectonic events affecting the Ivorian basement. These results contribute significantly to the improvement of the structural map of the Black Volta Basin in Côte d'Ivoire. In addition to the major known tectonic faults, numerous lineaments, particularly those at depth, have been highlighted by the present study.

Downloads

Download data is not yet available.

Metrics

Metrics Loading ...

PlumX Statistics

References

1. Abbass, A. A. & Mallam, A. (2013). Estimating the Thickness of Sedimentation within Lower Benue Basin and Upper Anambra Basin, Nigeria, Using Both Spectral Depth Determination and Source Parameter Imaging. ISRN Geophysics.
2. Abderbi, J. & Khattach, D. (2010). The contribution of gravimetry to the study of the structure of the High Plateaux (Maroc). Bull. Inst. Sci., Rabat, Earth Sciences section, 32, 19-30.
3. Armel Kouame, K., Marc Youan Ta, O., Zéphir De Lasme, Derving Baka, Carine. A. M., Njeugeut Fernand, & Kouame, K. (2019). Analysis of Fracture Networks of the Black Volta Catchment in Côte D’ivoire; Journal of Geography, Environment and Earth Science International (JGEESI) ISSN: 2454-7352, n°46635, Feb. 2019, 1-14p
4. Asfirane-haddadj, F. & Galdeano, A. (2000). The use of Euler deconvolution and analytical signal for locating magnetic sources. Bulletin of the Geological Society, France, (1), 71-81.
5. Baranov, V. (1957). A new method for interpretation of aeromagnetic maps: pseudo gravimetrie anomalies. Geophysics, 22 (2), 359-382.
6. Bouiflane, M. (2008). Aeromagnetic and magnetic multi-scale mapping: structural study of a region of the Rhine Graben. Thèse de Doctorat, Université Louis Pasteur, Strasbourg 1.
7. Coulibaly, A. (2014). Contribution of the electrical resistivity method (Trails and Electrical Soundings) to the location of aquifers in crystalline and crystallophyllous basement zones: the case of the Tanda region (north-east of Côte d'Ivoire), PhD thesis, Félix Houphouët Boigny University 148 p
8. El Gout, R., Khattach, D., Houari, M. R., Kaufmann, O., & Aqil, H. (2010). Main struc-tural lineaments of northeastern Morocco derived from gravity and aeromagnetic data. Journal of African Earth Science, (58), 255–271.
9. Faillat, J. P. (1985). Fissured aquifers in humid tropical zones: structure, hydrodynamics and hydrochemistry (West Africa). University thesis. Languedoc (Montpellier), 534 p.
10. Grauch, V. J. S., Sawyer, D. A., Minor, S. A., Hudson, M. R., & Thompson, R. A. (2006). Gravity and Aeromagnetic Studies of the Santo Domingo Basin Area, New Mexico. Chapter D of The Cerrillos Uplift, the La Bajada Constriction and Hydrogeologic Framework of the Santo Domingo Basin, Rio Grande Rift,New Mexico, edited by Scott A. Minor. U. S. Geological Survey, Denver, 63-86.
11. Jofack-Sokeng, V.C. (2013). Contributions of neural networks to the lithostructural mapping of the Precambrian basement of the Bondoukou region (north-east of Côte d'Ivoire), Earth Sciences MASTER degree dissertation. University. Félix Houphouet BOIGNY (Abidjan), 94 p
12. Keating, P. (1997). Automated trend reinforcement of aeromagnetic data. Geophysical Prospecting, 45 (3), 521-534.
13. Khattach, D., Keating, P., Mili, E., Chennouf, T., Andrieux, P., & Milhi, A. (2004). The contribution of gravimetry to the study of the structure of the Triffa cathment (north-eastern Morocco): hydrogeological implications. Comptes Rendus Géoscience, (336), 1427-1432.
14. Lachassagne, P. & Wyns, R. (2005). Aquifères de socle : nouveaux concepts - Application à la prospection et la gestion de la ressource en eau. Géosciences 2, p. 32-37.
15. Mangoua, J. (2013). Evaluation of the potential and vulnerability of the groundwater resources of the fissured aquifers of the Baya catchment area (East of Côte d'Ivoire). PhD thesis, 171p. Nanguy Abrogoua University.
16. Miller, H.G. & Singh, V. (1994). Potential field tilt- a new concept for location of potential field sources. Journal of applied Geophysics, 32, 213-217.
17. Ousmane, B. (1988). Etude géochimique et isotopique des aquifères du socle de la bande sahélienne du Niger (Liptako, Sud-Maradi et Zinder-Est). Thèse Univ. Niamey. 175 p.Journal of African Earth Science, (58), 255–271.
18. Reeves, C. (2005). Aeromagnetic surveys: principles, practice and interpretation. Course unit i, 50, 150 pages.
19. Reid, A. B., Allsop, J. M., Granser, H., Millett, A. J., & Somerton, I.W. (1990). Magnetic interpretation in three dimensions using Euler deconvolution. Geophysics, 55, 80-91.
20. Salem, A., William, S., Fairhead, D., Smith, R., & Ravat, D. (2008). Interpretation of magnetic data using tilt-angle derivatives. Geophysics, 73, NO. 1 _JANUARY-FEBRUARY 2; P. L1–L10, 7 FIGS.
21. Vanié, L.T.A., Khattach, D., & Houari, M. R., (2005). Contribution of gravity anomaly filtering to the study of deep structures in eastern Morocco. Bulletin of the Scientific Institute, Rabat, Earth Sciences section, (27), 29-40.
22. Verduzco, B., Fairhead, J. D., Green, C. M., & Mackenzie, C. (2004). New insights into magnetic derivatives for structural mapping. SEG the Leading Edge February, 116-119.
23. Youan Ta, M., Lasm, T., Jourda, J. P., Kouame. K. F., & Razack, M. (2008). Structural mapping using Landsat-7 ETM+ satellite imagery and analysis of fracture networks in the Precambrian basement of the Bondoukou region (north-eastern Côte d'Ivoire). Remote Sensing Journal, 2008, vol. 8, no. 2, p. 119-135, 2008, vol. 8, n° 2, p. 119-135.