Résumé
We present new U-Pb results on felsic Augen orthogneisses from the Axial Zone of the Montagne Noire (French Massif Central). The data indicate Ordovician ages, 456+ or -3 and 450+ or -6 Ma for two samples collected at "Pont-de-Larn" and "Gorges d'Heric", respectively. These ages are interpreted as the igneous emplacement age of the granitic protolith Abstract Copyright (2004) Elsevier, B.V.