Use of Landsat 8 OLI and Aeromagnetic Data for Structural Mapping of Pako Basin Region, North Benin

Raoufou D. Ibrahim GNAMMI YORO^1, , Gérard Alfred Franck d’ALMEIDA¹, Karim ALLEK², Christophe KAKI¹ and Nicaise YALO³

¹Laboratory of Geology, Mines and Environment, Department of Earth Sciences, University of Abomey-Calavi, 01 BP 4521 COTONOU (R. Benin)

²Geophysics Laboratory, Department of Geophysics, M’Hamed Bougara-Boumerdes University, Avenue de l'Indépendance 35000 Boumerdes, Algeria

³National Institute of Water (INE / UAC), 01 BP 526 Cotonou (R. Benin)

Cite this paper:
Raoufou D. Ibrahim GNAMMI YORO, Gérard Alfred Franck d’ALMEIDA, Karim ALLEK, Christophe KAKI and Nicaise YALO. Use of Landsat 8 OLI and Aeromagnetic Data for Structural Mapping of Pako Basin Region, North Benin. Journal of Geosciences and Geomatics. 2020; 8(2):45-57. doi: 10.12691/jgg-8-2-1

Abstract

Spectral geology and aeromagnetic data help geoscientists in mapping and prediction of potential mineral areas. This paper aims to present structural features of the poorly studied Pako region of northern Benin using Landsat 8 OLI images and aeromagnetic data. Remote sensing technique led to the discovery of several faults of two main directions (N-S and E-W), resulting from great regional tectonics’ deformations. The other faults have NE-SW to NW-SE orientations. Among identified faults, N-S faults (N18°) gathering 14% and E-W (N92°) to NW-SE (N160°) fractures cumulating 61% limit the basin on both sides. Therefore, these faults could be interpreted as border fractures which have initiated the formation of Pako basin. Total magnetic field technique held to define anomalous zones and associate shears zones in order to identify potential corridors of mineralization. Field observations in Pako region have confirmed the existence of brittle deformations, as sociated to dextral and/or senestral detachment, and ductile deformations with rotational dextral components. The integration of our results with the regional geological context allow to propose a structural model of Pako region.

Keywords:
Landsat 8 OLI aeromagnetic data Pako region faults structural model.

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References:

[1]	Leu, L. K. Use of reduction-to equator process for magnetic data interpretation, in fifty first annual International Meeting, Society of exploration Geophysicists 445 (Abstract) 1981.
[2]	Evans D. Cuitent status and future developments in radar remote sensing. –ISPRS Journal of Photogrammetry and Remote Sellsillg, vol. 47, 79•99. 1992.
[3]	Singhroy V.H.- Radar geology: Techniques and results - Episodes, vol. 5.1992.
[4]	Blom R.G., Crippen R.E., Elachi C. - Detection of subsurface features in SEASA Tradarimages of Means Valley, Mojave Desert, Califomia. - Geology, vol. 12, 346-349. 1984.
[5]	Sabins F. F. Geologic interpretation of Space Shuttle Radar Images of Indonesia. –AAPG Bulletin, 67. 1983.
[6]	Gaddis L., Mouginis-Mark R., Singer, Kaupp V. - Geologic analyses of Shuttle Imaging Radar (SIR-B) data of Kilauea Volcano, Hawaii. - Geological Society of America Bullelin, vol. 101, 17-332. 1989.
[7]	King C., Feybesse J.-L., Bilia M., Rémond A., Bourguignon A., Rouzeau O., Perrin J.,Legendre J. - « AURROS » Radar à Ouverture Synthétique pour l'exploration aurifère.in;Le Programme Aval SAR,ed. CNES DP/OT. 1999.
[8]	Ferre, E. C., Bouchez, J. L., Kozminski, G., & Omitogun, A. A."SLAR interpretation Forstructuralmapping in the basement of northern Nigeria", Proceedings of the Thematic Conference on Geologic Remote Sensing, vol. 11, no. Ann Arbor, MI, p. I.1996.
[9]	Ferre, E., Gleizes, G., & Caby, R. "Obliquely convergent tectonics and graniteemplacement in the Trans-Saharan Belt of eastern Nigeria; a synthesis", PrecambrianResearch, vol. 114, no. 3-4, pp.199-219. 2002.
[10]	Garba, I. "Origin of Pan-African mesothermal gold mineralisation at Bin Yauri, Nigeria", Journal of African Earth Sciences, vol. 31, no. 2, pp. 433-449, 2000.
[11]	Garba, I. "Geochemical characteristics of the gold mineralization near Tsohon Birnin Gwari, northwestern Nigeria", Chemie der Erde, vol. 62, no. 2, pp. 160-170. 2002.
[12]	Baraou I. S. Contribution à l'étude pétrographique, géochronologique et structurale desformations panafricaines du Sud Maradi (Sud Niger) : relations avec les indices aurifères, these, doctorat, 114p, 2018.
[13]	Prakla Prospection geophysique du Dahomey, reconnaissance au sol des anomalies, 1966.
[14]	Breda. Etude de cartographie géologique et de prospection minière de reconnaissanceau Nord du 11e parallèle (Bénin). Rapport final. Projet N°4105-011-13-20, GéominerariaItaliana. 1982.
[15]	Institut Geographique National. Carte touristique du Bénin. 2006.
[16]	Dada, S. S. "Crust-forming ages and Proterozoic crustal evolution in Nigeria; Reappraisal of currentinterpretations", Precambrian Research, vol. 87, no. 1-2, pp. 65-74. 1998.
[17]	Bruguier, O., Dada, S., & Lancelot, J. R. “Early Archaean component (>3.5 Ga) within a 3.05 Ga or thogneiss from northern Nigeria; U-Pb zircon evidence”, Earth and Planetary Science Letters, vol. 125, no. 1-4, pp. 89-103. 1994.
[18]	Dickin, A. P., Halliday, A. N., & Bowden, P. "A Pb, Sr and Nd isotope study of the basement and Mesozoic ring complexes of the Jos Plateau, Nigeria", Chemical Geology; Isotope Geoscience Section, vol. 94, no. 1, pp. 23-32. 1991.
[19]	Kröner, A., Collins, A. S., Hegner, E., Willner, A. P., Muhongo, S., & Kehelpannala, K. V. W. "The East African Orogen: new zircon and Nd ages and implications for Rodiniaand Gondwanas upercontinent formation and dispersal", Gondwana Research,vol. 4, pp. 179-181. 2001.
[20]	Woakes, M., Rahaman, M. A., & Ajibade, A. C. "Some metallogenetic features of the Nigerianbasement", Journal of African Earth Sciences (1983), vol. 6, no. 5, pp. 655-664. 1987.
[21]	Gnammi Y.R. D. I., d’Alméida G.A. F., Kaki C. Lithofaciès et traits structuraux desformations du secteur sud du bassin volcano-sédimentaire de la Pako, Nord Bénin, ISS1813-548X, http://www.afriquescience.net; 14p. 2020.
[22]	Affaton P., Rahaman M. A., Trompette R., and Sougy J. The Dahomeyide Orogen: Tectonothermal Evolution and Relationships with the Volta Basin; (1991).
[23]	Adissin Glodji C. L. La zone de cisaillement de Kandi et le magmatisme associé dans larégion de Savalou-Dassa (Bénin): étude structurale, pétrologique etgéochronologique.Thèse de Doctorat, Université de Lyon, 224 pages. 2012.
[24]	Drury S. A. Remote sensing of geological structure in temperate agricultural terrain.Geological magazine. 123(2) 113-121. 1986.
[25]	Marion A. Introduction aux techniques de traitement d’image. Paris, Editions Eyrolles, 278p. 1987.
[26]	Toutin T. La correction géométrique rigoureuse : un mal nécessaire pour la santé devosrésultats. Journal canadien de télédétection, Vol. 22(2) 184-189. 1996.
[27]	Bonn, F. et Rochon, G. Précis de Télédétection. Principes et méthodes. Presse de l’université de Québec / AUPELF, vol. 1, 485 p. 1992.
[28]	Ranjbar H, Honarm and M and Moezifar Z. Analysis of ETM+ and Airborne Geophysical Data for Exploration of Porphyry Type Deposits in the CentralIranian Volcanic Belt, Using Fuzzy Classification, Remote Sensing for Environmental Monitoring, GISapplications, and Geology III, SPIE pp. 165-173. 2004).
[29]	Chabrillat S, Pinet P, Ceuleneer G, Johnson P and Mustrad J. Ronda Peridotite Massif: Methodology for its Geological Mapping and Lithological Discrimination fromAirborne Hyperspectral Data, International Journal of Remote Sensing 21(12), 2363-2388. 2000.
[30]	Pinet P., Shevchenko V., Chevrel S., Daydou Y. and Rosemberg C. Local and RegionalLunar Regolith Characteristics at Reiner Gamma Formation: Optical and Spectroscopic Properties from Clementine and Earth-Based Data, Journal of Geophysical Research 105,9457-9475. 2000.
[31]	Blakely, R.J., Simpson, R.W., Locating edges of source bodies from magnetic or gravity anomalies. Geophysics 51 (14), 94-98. 1986.
[32]	Kouamé K. F., Lasm T., Saley M. B., Tonyé E., Bernier M. & Wade, S. Extraction linéamentaire par morphologie mathématique sur une image RSO de RadarSat-1:Application au socle Archéen de la Côte d’Ivoire, IIIème Journées d’AnimationScientifiquedu réseau de Télédétection de l’AUF JAS'09, Sous le thème: « Imagerie Satellitaire Multisources : Approches Méthodologiques et Applications », Alger, 8-11novembre 2009.
[33]	Caby R. and J.M. Boessé J. M. Pan-African nappe system in southwest Nigeria: the Ife-llesha schist belt. Journal of African Earth Soences, Vol 33, N°. 2, pp. 211-225. 2001.
[34]	Affaton P., Gaviglio P. and PharisatA. Réactivation du craton ouest-africain auPanafricain : paléocontraintes déduites de la fracturation des grès néoprotérozoïques deKarey Gorou (Niger, Afrique de l’Ouest). C. R. Acad. Sci.Paris, Sciences de laTerre et des planètes / Earth and Planetary Sciences 331 (2000) 609-614. 2000.
[35]	Tairou M. S., Affaton P., Gélard P., Aïté R. and Sabi E. Panafrican brittle deformation and palaeo-stress superposition in northern Togo (West Africa). C. R. Geoscience 339. (2007) 849-857. 2007.
[36]	Chala D., Tairou M.S., Wenmenga U., Kwékam M., Affaton P., Kalsbeek F. and TossaC., Houéto A. Pan-African deformation markers in the migmatitic complexes of Parakou-Nikki (Northeast Benin). Journal of African Earth Science,111 (2015), 387-398. 2015.
[37]	Ball. E. An example of very consistent brittle deformation over a wide intracontinentalarea: the late Pan-African fracture system of the Tuareg and Nigerian shield. Tectonophysic, 16, (1980) 363-379 p. 1980.
[38]	Mc Curry P. Pan-african orogeny in Nothern Nigeria. - Geol. Soc. Amer. Bull., 80,1775-1782. 1971.
[39]	Chukwu-Ike M. I. Régional photogeological interpretation of tectonic features of central Nigeria basement complex: A satellite Imagery based study, Mc., Dic PhD, 1997.
[40]	Affaton P. Notice explicative des cartes géologiques au 1 / 200 000e de laRépublique populaire du Bénin entre les9e et 10e degrés de latitude nord (feuille deBassari-Djougouet feuille de Parakou-Nikki). Rapport B.R.G.M., n° 78 RDM055AF,Orléans,Fr, 70 p., cartes, 2 annexes, inédit, 1978.
[41]	Caby R., Black R., Mousine-Pouchkine A., Bayer R., Bertrand M.J., Boullier M. A.,Fabre J. and Lesquer A. Evidence for late Precambrian plate tectonics in West Africa, 5p. 1981.
[42]	Affaton P., Tairou M. S., Tossa C., Chala D. and Kwekam M. Premières données microstructurales sur le complexe granito-migmatitique de la région de Nikki, Nord Est Bénin, 14p. LTD printed in Nigeria ISSN 1596-6798 www.globaljournalseries.com., 2013.