Map of the HT/LP metamorphism in the overall Pyrenean-Cantabrian belt. (a) Geological map with locations of the RSCM peak temperature values used in this study (previous data from Angrand et al., 2021; Chelalou et al., 2016; Clerc et al., 2015; Cloix, 2017; Corre, 2017; Golberg and Leyreloup, 1990; Izquierdo-Llavall et al., 2020; Revelli, 2013; Saspiturry et al., 2020; Villard, 2016, and this study). (b) Isometamorphic map of the Pyrenean-Cantabrian belt wich represents the distribution of the HT/LP metamorphism recorded by the rocks during the Cretaceous hyperextension. BCB: Basque-Cantabrian Basin; MB: Mauléon Basin; ChB: Chaînons Béarnais; BB: Baronnies Basin; MoB: Montillet Basin; BalB: Ballongue Basin; CaB: Camarade Basin; AB: Aulus Basin; TB: Tarascon Basin; BoB: Boucheville Basin; BAB: Bas-Agly Basin. BdS: Bessède-de-Sault