TITLE:
Comparative Petro-Geochemistry of the Intrusive Granitoids of the Comoé Basin and the Granitoids of the Ferkessédougou Batholith (Côte D’Ivoire, Man-Leo Shield): Geodynamic Implications for the West African Craton (WAC)
AUTHORS:
Tokpa Kakeu Lionel-Dimitri Boya, Allou Gnanzou, Aristide Ghislain Beugré Dago, Nahoua Silue, Koffi Raoul Teha, Alain Nicaise Kouamelan
KEYWORDS:
Petro-Geochemistry, Birimian Granitoid, Comoé Basin, Ferkessédougou Batholith, Côte d’Ivoire
JOURNAL NAME:
Journal of Geoscience and Environment Protection,
Vol.10 No.7,
July
15,
2022
ABSTRACT: The study of Birimian granitoids is of great importance because it allows
us to understand the architecture of the West African crust and the processes
that shaped it. In order to contribute to the improvement of knowledge on the
geodynamic context of the emplacement of certain granitoids of the West African
craton, this article addresses some essential problems of the Birimian, namely
distinguishing the real nature of the magmas and the mechanisms that generated
this Birimian crust. On the West African craton, there are intrusive granites
in volcano-sedimentary furrows, in meta-sedimentary basins and granites that
form batholiths separating these structures. To provide an answer to this
scientific concern, we conducted a comparative study of the granitoids of the
Comoé basin (Tiassalé region) and those of the large batholith of
Ferkessédougou (Daloa region). From this study, it appears that these Birimian
granitoids have been identified as granites, granodiorites and tonalites in the
Tiassalé region while in Daloa, they are assimilated to anatexites and granites. They present very diverse aspects and
contexts of emplacement: the granitoids of the Comoé basin have characteristics
of type I granite, indicating direct crystallization of mantle magmas in
a syntectonic emplacement, while in the Daloa region, some granitoids are
magmatic, others migmatitic or metasomatic, reflecting a certain complexity
relating to their genesis.