A 3.5 Ga granite-gneiss basement in Guinea: further evidence for early archean accretion within the West African Craton
A granite-gneiss formation (Guélémata Orthogneiss) was mapped on the northern and western slopes of the Mount Nimba hill range in Guinea. The original rocks were high-Al, low-Yb, medium to high-K granites similar to most Archean TTG. Analyses of U and P
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