Vol.24, N°6 (2024) - Article 4

Petro-structural signature and gold mineralization relationship in the meridional sector of the Fettékro greenstone belt, Central-western Côte d’Ivoire, based on remote sensing and field investigations

This work aims to understand the geological framework of the mineralization and to establish the relationship between the gold deposit and the geology of the area. It is based on the use of optical and radar images and supplemented by a field campaign. The study yielded structural or linear maps of the study area, covering an area of 471.38 Km². The detailed map of fractures obtained after validation includes more than 6,500 fractures. The remote sensing tools have thus made it possible to draw up an updated structural diagram of the study area. The area is marked by intense fracturing, with the main directions being N00-N010, NE-SW (N040-N080) and N090-N120. The central and north-eastern sectors of the study area are the most interesting and correspond to the strongest geochemical anomalies in gold and lineament density over the entire study area. The structural study highlighted two shear zones, one N010-N025 sinister, the other N110-N120 dexter, within volcanic, metamorphic and plutonic formations, which are thought to be responsible for the gold mineralization of these formations. This work has enabled us to highlight the vector of mineralization in the area and the origin of the current architecture of the geological formations in the region.

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