Abstract
Sillimanite nodules of the Espinouse massif are imponant features for describing the strain that prevailed at the climax of metamorphism. At this stage, the Axial Zone was already an antiformal structure affected by extensional unroofing. Occurrence of the sillimanite nodules mostly in the aureole zone of a granite recently dated at 327 ± 5 Ma, implies that extensional deformation defined by sillimanite nodules and low-angle shear zones was active at the end of the Visean and consequently, contemporaneous with the latest stage of nappe overthrusting and stacking in the southern limb of the Montagne Noire.
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More From: Comptes Rendus de l'Academie des Sciences Series IIA Earth and Planetary Science
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