Petrographic and Geochemical Characters of Granites of the Banfora Belt, Burkina Faso (West Africa)

作     者：Abdoulaye Ouedraogo Seta Naba Hermann Ilboudo Abdoulaye Ouedraogo;Seta Naba;Hermann Ilboudo

作者机构：Laboratoire Géosciences et Environnement (LaGE) Département des Sciences de la Terre Unité de Formation et de Recherche en Sciences de la Vie et de la Terre Université Joseph KI-ZERBO Ouagadougou Burkina Faso Bureau des Mines et de la Géologie du Burkina (BUMIGEB) Ouagadougou Burkina Faso 

出 版 物：《International Journal of Geosciences》 (地球科学国际期刊（英文）)

年 卷 期：2024年第15卷第9期

页      面：682-697页

学科分类：07[理学] 

主　　题：Burkina Faso Banfora Greenstones Belt Plutons Geodynamic Context Subduction 

摘      要：The Banfora’s birimian greenstones belt is located in the western part of Burkina Faso (west Africa). Recent petrographic and lithogeochemical studies have highlighted plutons intruding the metasedimentary and metavolcanic series. These plutonic rocks are composed of leucogranites belonging to the so-called Ferkessedougou’s or Ferké’s batholith, granites, granodiorites, monzodiorites and quartz monzonites. From the lithogeochemical studies, these plutonic rocks have a calc-alkaline and peraluminous character. The rare earth elements spectra of the Ferké’s leucogranites let distinguished two sub-facies. One of the sub-facies is composed of quartz monzonite to granite, while the other is granitic sensu stricto. However, all these plutonic rocks were emplaced in a geodynamic context of subduction followed by collision.