Petrography and Geochemistry of Baïbokoum-Touboro-Ngaoundaye Granitoids on the Chad-Cameroon-RCA Borders (Adamawa-Yade Domain) — Oak Academic Publishing
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Petrography and Geochemistry of Baïbokoum-Touboro-Ngaoundaye Granitoids on the Chad-Cameroon-RCA Borders (Adamawa-Yade Domain)
Department of Geology, Faculty of Sciences and Techniques, University Adam Barka of Abeche, Abeche, Chad
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Department of Geology, Faculty of Sciences and Techniques, University Adam Barka of Abeche, Abeche, Chad
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Department of Mines and Geology, School of Geology and Mining Engineering, University of Ngaoundere, Meiganga, Cameroon
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Department of Mines and Geology, School of Geology and Mining Engineering, University of Ngaoundere, Meiganga, Cameroon
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Department of Geology, Faculty of Sciences, Minia University, El-Minia, Egypt
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Department of Earth Sciences, Faculty of Sciences, University of Ngaoundere, Ngaoundere, Cameroon
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Department of Earth Sciences, Faculty of Sciences, University of Yaounde I, Yaounde, Cameroon
1 Department of Geology, Faculty of Sciences and Techniques, University Adam Barka of Abeche, Abeche, Chad
2 Department of Geology, Faculty of Sciences and Techniques, University Adam Barka of Abeche, Abeche, Chad
3 Department of Mines and Geology, School of Geology and Mining Engineering, University of Ngaoundere, Meiganga, Cameroon
4 Department of Mines and Geology, School of Geology and Mining Engineering, University of Ngaoundere, Meiganga, Cameroon
5 Department of Geology, Faculty of Sciences, Minia University, El-Minia, Egypt
6 Department of Earth Sciences, Faculty of Sciences, University of Ngaoundere, Ngaoundere, Cameroon
7 Department of Earth Sciences, Faculty of Sciences, University of Yaounde I, Yaounde, Cameroon
The Ba ï bokoum-Touboro-Ngaoundaye area is located in the Adamoua-Yade domain of the Pan-African Fold Belt in Central Africa. The present work concerns the petrographic and geochemical study. The study area is made up of plutonic rocks including two amphibole granites, four biotite and muscovite granites, two syenites and one monzonite sample. These rocks have a granular porphyroid texture, with a mylonitic tendency. The primary paragenesis consists of Opx + Cpx + Amp + Bt + Pl + Or + Mic + Qtz + Ap + Sph + Zr and the secondary paragenesis consisting of Ch + Op. Plutonic rocks are shoshonitic to calc-alkaline with a strong potassic affinity. The REE profiles of these rocks show a negative anomaly of Eu in the granites and no Eu anomaly in syenites and monzonite (syeno-diorite). Multielement spectra of plutonic rocks present a negative anomaly in Nb-Ta and Ti. Fractional crystallization is the process that made these rocks of study area. These rocks are placed in a subduction to syn-collisional (VAG + Syn-COLG) and of intraplate granitoids (WPG) environment.
KeywordsPetrographyGeochemistryBaïbokoum-Touboro-NgaoundayeAdamawa-Yade DomainPan-African Fold Belt
Njanko, T., Nedelec, A. and Affaton, P. (2006) Synkinematic High-K Calc-Alkaline Plutons Associated with the Pan-African Central Cameroon Shear Zone (W-Tibati Area): Petrology and Geodynamic Significance. Journal of Africa Earth Sciences, 44, 494-510. https://doi.org/10.1016/j.jafrearsci.2005.11.016
Njanfang, E., Ngako, V., Moreau, C., Affaton, P. and Diof, H. (2008) Restraining Bends in High Temperature Shear Zone: The “Central Cameroon Shear Zone”, Central Africa. Journal of Africa Earth Sciences, 52, 9-20. https://doi.org/10.1016/j.jafrearsci.2008.03.002
Toteu, S.F., Penaye, J. and Poudjom, D.Y. (2004) Geodynamic Evolution of the Pan-African Belt in Central Africa with Special Reference to Cameroon. Canadian Jounal of Earth Sciences, 41, 73-85. https://doi.org/10.1139/e03-079
Ganwa, A.A. (2005) Les granitoides de Méiganga: Etude pétrographique, géochimique, structurale et géochronologique. Leur place dans la chaine panafricaine. Thèse d’état ès sciences naturelles, Université de Yaoundé I, Yaoundé, 162 p.
Nzenti, J.P., Badibanga, K., Gerhard, W. and Ruananza, T.L. (2006) Synkinematic Emplacement of Granitoids in a Pan-African Shear Zone in Central Cameroon. Journal of African Earth Sciences, 45, 75-76. https://doi.org/10.1016/j.jafrearsci.2006.01.005
Jérémine, E. (1951) Sur une perthite syénite de Baibokoum et une perthite-granulite de Passi (territoire sud du Tchad) B.S.G.Fr. (6), t.1, fasc. 1,2,3.
Gerard, G. (1954) Bossangoa-ouest: Rapport de fin de mission 1953-Dir. MINES Géol. AEF, Brazzaville.
Mbaitoudji, M.M. (1984) Lois de répartition, hypothèse de pronostics et méthodologie de la recherche des gisements de minéraux utiles solides dans le territoire de la République du Tchad. Publication CIFEG, Paris, 14 p.
Kasser, M. (1995) Evolution précambrienne de la région de Mayo-Kebbi (Tchad) Un segment de la chaine panafricaine. Thèse de Doctorat, Muséum National, Histoire Naturelle, Paris, 217 p.
Naimou, S., Ganwa, A.A., Urs, K., Amadou, D.K. and Ekodeck, G.E. (2014) Petrography and Geochemistry of Precambrian Basement Straddling the Cameroon-Chad Border: The Touboro-Baibokoum Area. International Journal of Geosciences, 5, 418-431. https://doi.org/10.4236/ijg.2014.54040
Naimou, S. (2020) Etudes géomorphologique, pétrographique, structurale et géochimique de la région Baibokoum-Touboro-Ngaoundaye aux confins Tchad-Cameroun-Centrafrique. Thèse de doctorat Ph/D, Université de Ngaoundéré, Ngaoundéré, 208 p.
Poidevin, J.L. (1991) Les ceintures de roches vertes de la République Centrafricaine. Contribution à la connaissance du Précambrien du nord du craton du Congo. Doctorat d’Etat, Université Blaise Pascal, Clermont-Ferrand (France).
Bouyo, H.M., Penaye, J., Barbey, P., Toteu, S.F. and Wandji, P. (2013) Petrology of High-Pressure Granulite Facies Metapelites and Metabasites from Tcholliré and Banyo Regions: Geodynamic Implication for the Central African Fold Belt (CAFB) of North-Central Cameroon. Precambrian Research, 224, 412-433. https://doi.org/10.1016/j.precamres.2012.09.025
Nomo, N.E. (2017) Signification géodynamique de la faille de Tcholliré-Banyo: Apport de la pétrologie, de l’analyse structurale, de la géochimie et de la géochronologie des roches de la région de Tcholliré (Nord Cameroun). Thèse de Doctorat Ph/D, Université de Ngaoundéré, Ngaoundéré, 233 p.
Saha, F.A.N. (2018) Croissance et remobilisation crustale au Néoprotérozoique: Magmatisme, métamorphisme et déformation le long de la zone de cisaillement de Tcholliré-Banyo (région de Mbé-Sassa-Mbersi). Thèse de Doctorat Ph/D, Université de Ngaoundéré, Ngaoundéré, 352 p.
Bessoles, B. and Trompette, R. (1980) Géologie de l’Afrique. La chaine panafricaine zone mobile de l’Afrique (partie Sud) et zone mobile Soudanaise. Memoire du BRGM, Paris, 375 p.
Abdelsalam, M.G., Liégeois, J.P. and Stern, R.J. (2002) The Saharan Metacraton. Journal of African Earth Sciences, 34, 119-136. https://doi.org/10.1016/S0899-5362(02)00013-1
Dorbath, L., Dorbath, C., Stuart, G.W. and Fairhead, J.D. (1984) Structure de la croute sous le plateau de l’Adamaoua (Cameroun). Compte Rendu de l’Academie des Sciences de Paris, 298, 539-542.
Kusnir, I. (1993) Géologie, ressources minérales et ressources en eau du Tchad-Trav. Doc. SC. Tchad, connait. Tchad, 1, CNAR.
Cox, K.G., Bell, J.D. and Pankust, R.J. (1979) The Interpretation of Igneous Rocks. George Allen & Unwin, Crows Nest. https://doi.org/10.1007/978-94-017-3373-1
Wilson, M. (1989) Igneous Petrogenesis. Unwin Hyman, London, 466 p. https://doi.org/10.1007/978-1-4020-6788-4
Le Maitre, R.W., Bateman, P., Dudek, A., Keller, J., Lameyre, M., Le Bas, M.J., Sabine, P.A., Schmid, R., Sorensen, H., Streckeisen, A., Woolley, A.R. and Zanettin, B. (1989) A Classification of Igneous Rocks and Glossary of Terms. Recommendations of the IUGS Commission on the Systematics of Igneous Rocks. Blackwell, Oxford, 193 p.
Harker (1909) The Natural History of Igneous Rocks. Methuen, London.
Mc Donough, W.F. and Sun, S.S. (1995) The Composition of the Earth. Chemical Geology, 120, 223-253. https://doi.org/10.1016/0009-2541(94)00140-4
Irvine, T.N. and Barragar, W.R.A. (1971) A Guide to the Chemical Classification of the Common Volcanic Rocks. Canadian Journal of Earth Sciences, 8, 523-548. https://doi.org/10.1139/e71-055
Clemens, J.D. and Wall, V.J. (1981) Origin and Crystallization of Some Peraluminous (S-Type) Granitic Magmas. Canadian Mineralogist, 19, 111-131.
Liankun, S. and Kuirong, Y. (1989) A Two-Stage Crust-Mantel Interaction Model for Mafic Microgranular Enclaves in the Daning Granodiorite Pluton, Guangxi, China. In: Didier, J. and Barbarin, B., Eds., Enclaves and Granite Petrology, Developments in Petrology, Vol. 13, Elsevier, Amsterdam, 95-110.
Kouchi, A. and Sunagawa, I. (1985) A Model for Mixing Basaltic and Dacitic Magmas as Deduced from Experimental Data. Contributions to Mineralogy and Petrology, 89, 17-23. https://doi.org/10.1007/BF01177586
Haimeur, J., El Amrani El Hassani, I.-E. and Chabane, A. (2004) Pétrologie et géochimie des granitoides calco-alcalins de Zaer (Maroc central): Modèle pétrogénétique. Bulletin de l’Institut Scientifique, Rabat, section Sciences de la Terre, n° 2004, n°26, 27-48.
Zorpi, M.J., Coulon, C., Orsini, J.B. and Cocirta, C. (1989) Magma Mingling, Zoning and Emplacement in Calc-Alkaline Granitoid Plutons. Tectonophysics, 157, 315-329. https://doi.org/10.1016/0040-1951(89)90147-9
Orsini, J.B., Cocirta, C. and Zorpi, M.J. (1991) Genesis of Mafic Microgrenular Enclaves Trough Differentiation of Basic Magmas, Mingling and Chemical Exchanges with Their Host Granitoid Magma. In: Didier, J. and Babarin, B., Eds., Enclaves and Granite Petrology, Developments in Petrology, Vol. 13, Elsevier, Amsterdam, 445-463.
Boukaoud, E.H. (2007) Etude pétrographique et géochimique des pegmatites de Sidi Mezghiche (Wilaya de Skikda, nord-est algérien). Mémoire de magistère, université Mentouri Constantine, 134 p.
Class, C. and Goldstein, S.L. (1997) Plume-Lithosphere Interactions in the Ocean Basins: Constraints from the Source Mineralogy. Earth and Planetary Science Letters, 150, 245-260. https://doi.org/10.1016/S0012-821X(97)00089-7
Peycru, P., Dupin, J.M., Fogelgesang, J.F., Van, D.R.C., Cariou, F., Perrier, C. and Augère, B. (2008) Géologie, Tout-En-Un. BCPST. Dunod, Paris, 641 p.
Rollingson, H.R. (1993) Using Geochemical Data: Evaluation, Presentation, Interpretation. Pearson Education Limited, Essex, 352 p.
Zaraisky, G., Aksyuk, A., Devyatova, V., Udoratina, O. and Chevychelov, V. (2009) The Zr/Hf Ratio as a Fractionation Indicator of Rare-Metal Granites. Petrology, 17, 25-45. https://doi.org/10.1134/S0869591109010020
Zhu, D., Mo, X., Wang, L., Zhao, Z., Niu, Y., Zhou, C. and Yang, Y. (2009) Petrogenesis of Highly Fractionated I-Type Granites in the Zayu Area of Eastern Gangdese, Tibet: Constraints from Zircon U-Pb Geochronology, Geochemistry and Sr-Nd-Hf Isotopes. Science in China, Series D: Earth Sciences, 52, 1223-1239. https://doi.org/10.1007/s11430-009-0132-x
Davidson, J.P., McMillan, N.J., Moorbath, S., Worner, G., Harmon, R.S. and Lopez-Escobar, L. (1990) The Nevados de Payachata Volcanic Region (18° S/69° W, N) II. Evidence for Widespread Crustal Involvement in Andean Magmatism. Contributions to Mineralogy and Petrology, 105, 412-432. https://doi.org/10.1007/BF00286829
Amadou, D.K. (2019) Etude pétrologique et structurale de la region de Doua-Kalaldi-Badzer dans le domaine Adamaoua-Yadé de la chaine panafricaine (Adamoua-Cmeroun). Thèse de doctorat Ph/D, Université de Ngaoundéré, Ngaoundéré, 209 p.
Pearce, J.A., Harris, N.B.W. and Tindle, A.G. (1984) Trace Element Discrimination Diagrams for the Tectonic Interpretation of Granitic Rocks. Journal of Petrology, 25, 956-983. https://doi.org/10.1093/petrology/25.4.956
Harris, N.B.W., Pearce, J.A. and Tindle, A.G. (1986) Geochimical Characteristics of Collision-Zone Magmatism. In: Coward, M.P. and Reis, A.C., Eds., Collision Tectonics, Geological Society, London, Special Publications 19, 67-81. https://doi.org/10.1144/GSL.SP.1986.019.01.04
Bouyo, M.H., Zhao, Y., Penaye, J., Zhang, S.H. and Njel, U.O. (2015) Neoproterozoic Subduction-Related Metavolcanic and Metasedimentary Rocks from the Rey Bouba Greenstone Belt of North-Central Cameroon in the Central African Fold Belt: New Insights into a Continental Arc Geodynamic Setting. Precambrian Research, 21, 40-53. https://doi.org/10.1016/j.precamres.2015.01.012
Green, T.H. (1995) Signification of Nb/Ta as an Indicator of Geochemical Processes in the Crust-Mantle System. Chemical Geology, 120, 347-359. https://doi.org/10.1016/0009-2541(94)00145-X
Liégeois, J.P., Navez, J., Hertogen, J. and Black, R. (1998) Contrasting Origin of Post-Collisional High-K Calc-Alkaline and Shoshonitic versus Alkaline and Peralkaline Granitoids. Lithos, 45, 1-28. https://doi.org/10.1016/S0024-4937(98)00023-1
Morrisson, G.A., Larson, P.B. and Hooper, P.R. (2000) “Subduction Style” Magmatism in a Non-Subduction Setting: The Coville Igneous Complex, NE Washington State, USA. Journal of Petrology, 41, 43-67. https://doi.org/10.1093/petrology/41.1.43
Black, R. and Liégeois, J.P. (1993) Cratons, Mobile Belts, Alkaline Rocks and Continental Lithospheric Mantle: The Pan-African Testimony. Journal of the Geological Society, 150, 89-98. https://doi.org/10.1144/gsjgs.150.1.0088
Barbarin, B. (1999) A Review of the Relationships between Granitoids Types, Their Origins and Tectonic Setting. Geological Journal, 25, 605-626. https://doi.org/10.1016/S0024-4937(98)00085-1
Tchameni, R., Pouclet, A., Penaye, J., Ganwa, A.A. and Toteu, S.F. (2006) Petrography and Géochemistry of the Ngaoundéré Pan-African Granitoids in Central Nord Cameroon: Implication for Their Sources and Geological Setting. Journal of African Earth Sciences, 44, 511-529. https://doi.org/10.1016/j.jafrearsci.2005.11.017
Djouka-Fonkwé, M.L., Schulz, B., Schussler, U., Tchouankoué, J.P. and Nzolang, C. (2008) Geochemistry of the Bafoussam Pan-African I- and S-Type Granitoids in Western Cameroon. Journal of African Earth Sciences, 50, 148-167. https://doi.org/10.1016/j.jafrearsci.2007.09.015