@article{jgg20251321,
author={{Hermine, MVODO and Estelle, NGA ESSOMBA TSOUNGUI Philom¨¨ne and Djibril, KOUANKAP NONO Gus and Brice, KAMGUIA WOGUIA and Pascal, SIMO},
title={Geochemistry and <SUP>40</SUP>ar/<SUP>39</SUP>ar Geochronology of Amphibolites from Banefo-Mvoutsaha Area, Central Domain of the Pan-African Fold Belt in Cameroon},
journal={Journal of Geosciences and Geomatics},
volume={13},
number={2},
pages={31--43},
year={2025},
url={https://pubs.sciepub.com/jgg/13/2/1},
issn={2373-6704},
abstract={The Banefo-Mvoutsaha area lies along the Central Cameroon Shear Zone and belongs to the Central Domain of the Pan-African Fold Belt in Cameroon. The amphibolites of the study area are of two types: The banded amphibolites which are associated with migmatites and composed of Hbl + Bt + Qtz + Kfs + Pl ¡À Grt + Op; and the massive amphibolites which outcrops as discontinuous bands within the garnet bearing-gneisses; its mineral assemblage is made up of Hbl + Qtz + Kfs ¡À Grt ¡À Op. The studied amphibolites are ortho-derived, their SiO<SUB>2</SUB> contents range from 48 to 52 wt%, they are enriched in LREEs and LILEs relatively to HREE, and display negative Eu anomalies (0.65 ¡Ü Eu/Eu* ¡Ü 0.96), characteristics of alkali basaltic rocks, which belong to intraplate tholeiitic series. The banded amphibolites samples yield an Ar-Ar age of 618.14 ¡À 11.43 Ma, while the massive amphibolites samples ages are 547.50 ¡À 3.15 Ma. The 618 Ma age coincide with the emplacement age of granitoids that intruded the metamorphic basement of the area. The age of 547.50 ¡À 3.15 Ma is correlated to amphibolitic metamorphism events that mark the end of the Pan-African orogeny in the study area. These new Ar-Ar ages therefore point out at least two phases of amphibolitic metamorphism in the Central domain of the Pan-African Fold Belt in Cameroon.},
doi={10.12691/jgg-13-2-1}
publisher={Science and Education Publishing}
}