Late Devonian-early Carboniferous contraction-dominated deformation in Central Armorica (Monts d'Arrée, Brittany, France) and its relationship with the closure of the Rheic Ocean

These new insights allow linkage of the early Variscan, contraction-dominated deformation in Central Armorica to the closure of the Rheic Ocean and the continental collision of the Léon microcontinental block with Armorica. Our study also reveals the importance of the 'Bretonian' tectonometamorphic event in the entire north-western parts of Central Armorica; the main - cleavage-forming - deformation was diachronous and followed by subordinate wrench-related deformation.