Tectonostratigraphic framework for the syn-orogenic conglomerate units used in this study. Modifications from previous works are explained in the text. The ages of the allogroups are constrained by magnetostratigraphy (Beamud et al., 2003) but the ages of the different fans within the allogroups are estimated from their stratigraphic relationships. The age of emplacement of the basement thrust sheets is taken from Metcalf et al. (2009).