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https://doi.org/10.5382/sp.09.04

has been cited by the following article:

• TITLE: Petrological Characteristics of the Gneissic Formations in the Kenema-Man Domain: Biankouma-Kouibli Sector (Cote d’Ivoire West African Craton)

  AUTHORS: Brice Roland Kouassi, Kouadio David Koffi, Yao Honoré Koffi, Alain Nicaise Kouamelan

  KEYWORDS: Archean, Metamorphism, TTG, Rare Earths, Geodynamics, Biankouma and Kouibli

  JOURNAL NAME: Open Journal of Geology, Vol.15 No.5, May 15, 2025

  ABSTRACT: The gneissic formations constitute one of the major formations observed within the Archean domain of Côte d’Ivoire. Located in the northwest of Côte d’Ivoire, the gneissic formations of the Biankouma and Kouibli sectors were the subject of this study. In order to determine the geochemical and petrographic characteristics as well as the geotectonic environment of these rocks, petrographic studies associated with geochemical analyses were carried out. The geology of this area includes mainly metamorphic formations such as granulitic gneiss, charnockites, pink granulites, charnockitic gneiss and migmatitic gneiss with biotite. The mineralogy of these formations is dominated by quartz and feldspars associated with either biotite or hypersthene. The geochemical data indicate that these formations are generally granodioritic and tonalitic in composition; they are TTG. They have an essentially calc-alkaline affinity (strongly potassic), however tholeic occurrences are observable. The formations in the Biankouma and Kouibli sectors are weakly metaluminous to peraluminous and poor in alumina (Al2O3