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(Laboratoire Gosciences et Environnement (LaGE), Dpartement des Sciences de la Terre, Unit de Formation et de Recherche en Sciences de la Vie et de la Terre, Universit Joseph KI-ZERBO, Ouagadougou, Burkina Faso;Bureau des Mines et de la Gologie du Burkina (BUMIGEB), Ouagadougou, Burkina Faso)

机构地区：[1]Laboratoire Gosciences et Environnement (LaGE), Dpartement des Sciences de la Terre, Unit de Formation et de Recherche en Sciences de la Vie et de la Terre, Universit Joseph KI-ZERBO, Ouagadougou, Burkina Faso [2]Bureau des Mines et de la Gologie du Burkina (BUMIGEB), Ouagadougou, Burkina Faso

出　　处：《International Journal of Geosciences》2024年第9期682-697,共16页地球科学国际期刊（英文）

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.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.

关 键 词：Burkina Faso Banfora Greenstones Belt PLUTONS Geodynamic Context SUBDUCTION 

分 类 号：P58[天文地球—岩石学]