Structure, age and mode of emplacement of the Hercynian Bordères-Louron pluton (Central Pyrenees, France)

Abstract  The Hercynian Bordères-Louron pluton (20 km2) in the Central Pyrenees intrudes Devonian and Carboniferous metasediments. It shows a concentric zoning and consists of a significant proportion of (quartz) gabbros in its periphery,