TITLE:
Fouimba and Goma Mounts Greenstone Belts Litho-Structural Analysis Related to Côte D’Ivoire Birimian Geodynamic Setting and Implying in West-Africa Craton Gold Deposits
AUTHORS:
Marc Ephrem Allialy, Brice Roland Kouassi, N’guessan Nestor Houssou, Fossou Jean Luc Kouadio, Davy Bedel Siogbo, Félix Oufouet Konan
KEYWORDS:
Petro-Structural, Mapping, Greenstone Belt, Birimian, Séguéla, Côte D’Ivoire
JOURNAL NAME:
Journal of Geoscience and Environment Protection,
Vol.11 No.1,
January
31,
2023
ABSTRACT: Mount Fouimba and Mount Goma (Seguela)
greenstone belts petro-structural studies combine remote sensing,
geophysics, petrography and structural analysis. In view of establishing
mapping details of paleoproterozoic geological formations, geological setting rocks observed are essentially magmatic formations,
such as two-mica granite, granodiorites, and porphyritic basalts; and a few
metamorphics which are metatonalite, amphibolites and amphibo-lopyroxenites. Remote
sensing, such as Landsat 8 OLI satellite imagery and geophysical data, has been
combined to show regional NNE-SW shear zone. Tectonic structures and
microstructures have enabled to identify two main deformation phases: D1 phase
corresponding to compression, and D2 is a transpression phase. Mechanisms
responsible for deformations are respectively flattening and transpression. Geological formations derived from mantle origin but
contain crustal components, and their tectonic setting occurred during
subduction.