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Petrographic and Geochemical Characteristics of the Granitoids in the South of Godé (North of the Square Degree of Léo-Burkina Faso, West Africa)

¹ Unité de Formation et de Recherche en Sciences et Technologies, Département des Sciences de la Vie et de la Terre, Université Norbert Zongo, Koudougou, Burkina Faso
² Ecole Supérieure d’Ingénieries, Université de Fada N’gourma, Fada N’Gourma, Burkina Faso
³ Ecole Normale Supérieure (ENS)/Institut des Sciences et de Technologie (IST), Ouaga, Burkina Faso
⁴ Unité de Formation et de Recherche en Sciences de la Vie et de la Terre, Laboratoire Géosciences et Environnement (LaGE), Départe-ment des Sciences de la Terre, Université Joseph Ki-Zerbo, Ouaga, Burkina Faso
⁵ Unité de Formation et de Recherche en Sciences de la Vie et de la Terre, Laboratoire Géosciences et Environnement (LaGE), Départe-ment des Sciences de la Terre, Université Joseph Ki-Zerbo, Ouaga, Burkina Faso
⁶ Unité de Formation et de Recherche en Sciences de la Vie et de la Terre, Laboratoire Géosciences et Environnement (LaGE), Départe-ment des Sciences de la Terre, Université Joseph Ki-Zerbo, Ouaga, Burkina Faso
⁷ Unité de Formation et de Recherche en Sciences de la Vie et de la Terre, Laboratoire Géosciences et Environnement (LaGE), Départe-ment des Sciences de la Terre, Université Joseph Ki-Zerbo, Ouaga, Burkina Faso

International Journal of Geosciences·Volume 15 (2024)·Pages 106–118·Published 7 February 2024·DOI10.4236/ijg.2024.152008

Abstract

South of Godé, in the central-western region of Burkina Faso, granitoids of Paleoprot erozoic age are similar to those of the Man/Leo shield. This study focused on the petrographic and geochemical characteristics of these granitoids, with the following results: 1 ) The tonalite that outcrops in the south-wes t of the study area belongs to the TTG group or first generation granitoids. They are m ost often ribboned at outcrop and have a geochemical signature close to that of Archean TTGs. Tonalite has a metaluminous character and the REE spectrum indicates that it may be derived from partial melting of basic magmatic r ocks. 2 ) Biotite granites have no outcrop structure. They are weakly metaluminous to peraluminous and potassic to highly potassic. Their r are eart h spectra indicate that they may be derived from the partial melting of TTG granitoids. 3 ) Geotectonic diagrams show that the granitoids studied to the south of Godé were emplaced in an active tectonic context similar to that of present-day subduction zones.

KeywordsBurkina FasoGod&#233Man/Leo ShieldPetrographyGeochemistryPartial MeltingGeotectonic Setting

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Petrographic and Geochemical Characteristics of the Granitoids in the South of Godé (North of the Square Degree of Léo-Burkina Faso, West Africa)

Abstract

References (28)