The Intiédougou located in the Houndé Birimian greenstone belt has been the subject of several mining and geoscience studies that have led to the discovery of mineralized gold targets. One of these mineralized targets has prompted work that raises the issue of control factors for the gold mineralization of the prospect. The methodology used in this study combines a study of core drill hole data located in the area and laboratory studies. The Intiédougou sector is based on andesito-basaltic, andesitic interstratified volcanoclastite rocks and Tarkwaïen type detrital sedimentary rocks caught in a vice in the volcano-sedimentary unit. Lithostructural analysis of the sector shows that the subvolcanic rocks bearing gold mineralization are subjected to heterogeneous ductile to brittle deformations and affected by hydrothermalism evolving at stages marked by large fissure fillings. These hydrothermal phases evolve in the zones of expansion created by the brittle deformations that have contributed to the deposits of different types of gold-enriched sulphides. These different phases of hydrothermal destabilization generally of low degree accompany the tardi to post-eburnean brittle tectonics. This deformation system is favorable to the establishment of gold mineralization in the form of vein bodies. The overimposition of deformed and altered areas suggests a genetic relationship between deformation and hydrothermal activity. In conclusion, the mineralization of Intiédougou in vein styles, set up in a volcanic arc environment with a paragenesis of gold-pyrite deposit ± chalcopyrite would be controlled by the structural aspect and accompanied by hydrothermal alteration.
References
[1]
Hirdes, W. and Davis, D.W. (1998) First U-Pb Zircon Age Extrusive Volcanism in the Birimian Supergroup of Ghana, West Africa. Journal of African Earth Sciences, 27, 291-294. https://doi.org/10.1016/S0899-5362(98)00062-1
[2]
Pouclet, A., Doumbia, S. and Vidal, M. (2006) Geodynamic Setting of the Birimian Volcanism in Central Ivory Coast (Western Africa) and Its Place in the Paleoproterozoic Evolution of the Man Shield. Bulletin de la Société Géologique de France, 177, 105-121. https://doi.org/10.2113/gssgfbull.177.2.105
[3]
Sattran, W., Droege, B., Franceschi, G., Kaboré, J., Lointier, D., Sanou, T., Van de steen, J., Willemyns, P., Bakker, P., Bieler, G., Brons, J., Ford, M., Gerbaud, E., Joly, J., Monteverde, D. and Telleen, K. (1984) Carte métallogénique des zones birrimiennes de Boromo et de Houndé à 1/400,000e.
[4]
Huot, D., Sattran, V. and Zida, P. (1987) Gold in Birimian Greenstone Belt of Burkina Faso, West Africa. Economic Geology, 82, 2033-2044. https://doi.org/10.2113/gsecongeo.82.8.2033
[5]
Milési, J.P., Feybesse, J.L., Ledru, P., Dommanget, A., Ouédraogo, M.F., Marcoux, E., Prost, A.E., Vinchon, C., Sylvain, J.P., Johan, V., Tegyey, M., Calvez, J.Y. and Lagny, P. (1989) Les minéralisations aurifères de l’Afrique de l’Ouest. Leurs relations avec l’évolution lithostructurale au Protérozoïque inférieur. Chronique Recherche Minière, 497, 3-98.
[6]
Bonkoungou, I. (1994) Le Tarkwaien du sillon de Houndé (Burkina-Faso): Un ensemble volcano-détritique acide calcoalcalin à 2.15 Ga. Etude pétrologique, métamorphique et structurale. Univ. Nantes.
[7]
Castaing, C., Billa, M., Milesi, J.P., Thielblemont, D., Metour, J.L.E., Egal, E., Donzeau, M. (BRGM), et Guerrot, C., Cocherie, A., Chevremont, P., Tegyey, M., Itard, Y., (BRGM), Zida, B., Ouedraogo, I., Kote, S., Kabore, B.E., Ouedraogo, C. (BUMIGEB), Ki, J.C. and Zunino, C. (ANTEA) (2003) Notice explicative de la carte géologique et minière du Burkina Faso à 1/1,000,000.
[8]
Ada, K., Gampini, S.E., Naba, S., Marquis, P., Lompo, M., Wenmenga, U., Traoré, S.A. and Ilboudo, H. (2011) The Djarkadougou Gold Deposit in the Houndé Greenstone Belt (Burkina-Faso, West Africa): Lithological and Structural Context. Journal des Sciences et Technologies, 9, 49-64.
[9]
Baratoux, L., Metelka, V., Naba, S., Jessell, M.W., Grégoire, M. and Ganne, J. (2011) Juvenile Paleoproterozoic Crust Evolution during the Eburnean Orogeny (~2.2 - 2.0 Ga), Western Burkina Faso. Precambrian Research, 191, 18-45. https://doi.org/10.1016/j.precamres.2011.08.010
[10]
Koffi, Y.H., Wenmenga, U. and Djro, S.C. (2016) Tarkwaian Deposits of the Birimian Belt of Houndé: Petrological, Structural and Geochemical Study (Burkina-Faso, West Africa). International Journal of Geosciences, 7, 685-700. http://www.scirp.org/journal/ijg https://doi.org/10.4236/ijg.2016.75053
[11]
Lemoine, S, Tempier, P., Bassot, J.P., Caen Vachette, M., Vialette, Y., Touré, S. and Wenmenga, U. (1990) The Burkinian Orogenic Cycle, Precursor of the Eburnean Orogeny in West Africa. Geological Journal, 25, 171-188. https://doi.org/10.1002/gj.3350250208
[12]
Ouédraogo, C. (1994) Gold Potential in the Area between Intiedougou and Bagassi. Report. BUMIGEB. 18 p.
[13]
Koffi, Y.H. (2018) Contexte lithostructural et évolution géodynamique des gîtes aurifères de Intiédougou ceinture de roches vertes birimiennes (Sud-ouest Burkina-Faso). Doctorat. Depart Sci. Vie et de la terre. Université Ouaga I Pr Joseph KI-ZERBO. Ouaga. 253 p.
[14]
Gasquet, D., Barbey, P., Adou, M. and Paquette, J.L. (2003) Structure, Sr-Nd Isotope Geochemistry and Zircon U-Pb Geochronology of the Granitoids of the Dabakala Area (Côte d’Ivoire): Evidence for a 2.3 Ga Crustal Growth Event in the Paleoproterozoic of West Africa? Precambrian Research, 127, 329-354. https://doi.org/10.1016/S0301-9268(03)00209-2
[15]
Hein, K.A.A., Morel, V., Kagoné, O., Kiemde, F. and Mayes, K. (2004) Birimian Lithological Succession and Structural Evolution of in the Goren Segment of the Boromo Goren Greenstone Belt, Burkina Faso. Journal of African Earth Sciences, 39, 1-23. https://doi.org/10.1016/j.jafrearsci.2004.05.003
[16]
Naba, S., Lompo, M., Kagambega, N., Miningou, M. and Diallo, P.D. (2004) Influence de la magnétite dans le comportement magnétique des roches. Application à la cartographie géologique. Journal of Sciences, 4, 20-26.
[17]
Tshibubudze, A., Hein, K.A.A. and Marquis, P. (2009) The Markoye Shear Zone in Northeast Burkina Faso. Journal of African Earth Sciences, 55, 245-256. https://doi.org/10.1016/j.jafrearsci.2009.04.009
[18]
Hein, K.A.A. (2010) Succession of Structural Events in the Goren Greenstone Belt (Burkina Faso): Implications for West African Tectonics. Journal of African Earth Sciences, 56, 83-94. https://doi.org/10.1016/j.jafrearsci.2009.06.002
[19]
Lompo, M. (2010) Structural Evolution of Paleoproterozoic Belts (Eburnean Event) in the Man-Leo Shield, West African Craton. Key Structures for Vertical to Transcurrent Tectonics. Journal of African Earth Sciences, 58, 19-36. https://doi.org/10.1016/j.jafrearsci.2010.01.005
[20]
Jessel, M., Amponsah, P.O., Baratoux, L., Asiedu, D., Loh, J.K. and Ganne, J. (2012) Crustal-Scale Transcurrent Shearing in Paleoproterozoic Sefwi-Sunyani-Comoe Region, West Africa. Precambrian Research, 212-213, 155-168. https://doi.org/10.1016/j.precamres.2012.04.015
[21]
Tapsoba, B., Lo, C., Wenmenga, U., Jahn, B. and Chung, S. (2013) 40Ar/39Ar Thermochronology of Paleoproterozoic Granitoids of Northeast Burkina Faso, West African Craton: Implications for Regional Tectonics. Precambrian Research, 235, 208-229. https://doi.org/10.1016/j.precamres.2013.06.012
[22]
Tshibubudze, A. and Hein, K.A.A. (2013) Structural Setting of Gold Deposits in the Oudalan Gorouol Volcano Sedimentary Belt East of the Markoye Shear Zone, West African Craton. Journal of African Earth Sciences, 80, 31-47. https://doi.org/10.1016/j.jafrearsci.2012.11.010
[23]
Beziat, D., Dubois, M., Debat, P., Nikiema, S., Salvi, S. and Tollon, F. (2008) Gold Metallogeny in the Birimian Craton of Burkina Faso (West Africa). Journal of African Earth Sciences, 50, 215-233. https://doi.org/10.1016/j.jafrearsci.2007.09.017
[24]
Sanogo, A.D. (1993) Conditions structurales et minéralogiques du filon aurifère de Poura (Province du Mouhoun, Burkina Faso). Thèse Univ. Orléans.
[25]
Bourges, F., Debat, P., Tollon, F., Munoz, M. and Ingles, J. (1998) The Geology of the Taparko Gold Deposit, Birimian Greenstone Belt, Burkina Faso, West Africa. Mineralium Deposita, 33, 591-605. https://doi.org/10.1007/s001260050175
[26]
Assié, K.E. (2008) Lode Gold Mineralization in the Paleoproterozoic (Birimian) Volcano Sedimentary Sequence of Afema Gold District, Southeastern Côte d’Ivoire. Thesis, Faculty of Energy and Economic Sciences Technical University of Clausthal, Germany, 198 p.
[27]
Kadio, E., Coulibaly, Y., Allialy, M.E., Kouamelan, A.N. and Pothin, K.B.K. (2010) On the Occurrence of Gold Mineralizations in Southeastern Ivory Coast. Journal of African Earth Sciences, 57, 423-430. https://doi.org/10.1016/j.jafrearsci.2009.11.008
[28]
Naba, S., Lompo, M., Debat, P., Bouchez, J.L. and Béziat, D. (2004) Structure and Emplacement Model for Late-Orogenic Paleoproterozoic Granitoids: The Tenkodogo-Yamba Elongate Pluton (Eastern Burkina Faso). Journal of African Earth Sciences, 38, 41-57. https://doi.org/10.1016/j.jafrearsci.2003.09.004
