Cross-sections across the south Pyrenean proforeland system, all located in Figure 3 and organised from west to east. Shortening estimates across the whole south vergent system of cited authors, derived from cross-section restoration, are shown in brackets. (a) J8 (∼ 40 km) adapted from Larrasoaña et al. (2003) and Muñoz-Jiménez and Casas-Sainz (1997); (b) J7 (48 km), adapted from Teixell (1996). (c) J6 (85 km) adapted from Espurt et al. (2019a, b). (d) J5 (> 60 km) adapted from Saura et al. (2016). (e) Detailed section along the southern South Central Pyrenean Unit of the ECORS central line (J4 south, Fig. 3) showing strong salt influence, adapted from Burrel and Teixell (2021). (f) J4 (66–88 km) along the ECORS central deep seismic line adapted from Meigs and Burbank (1997) and Vergés (1993). (g) J3 (92 km) adapted from Vergés et al. (1998) and Grool et al. (2018).