Images of clast-counting stations, illustrating different clast lithologies (locations in Fig. 2A). A. Mon-10, Montllobar conglomerates. B. Mon-3, Espills allogroup. C. Mon-5. Gurp allogroup, unit 1. D. Gurp-5. Gurp allogroup, unit 4. E. Montsor-1, Pallaresa allogroup, Montsor fan. F. Montsor-3, Pallaresa allogroup, Montsor fan. G. Sent-1, Senterada allogroup, unit 1. H. Ant-2, Antist allogroup. Dev lst: Devonian limestone; Mz lst: Mesozoic limestone, Gr: Granit; P-T sst: Permo-Triassic sandstone; Bunts: Buntsandstein conglomerate; Culm: Culm conglomerate and sandstone; Of: Ophite; Sil met: Silurian metamorphic schist; Dev sch: Devonian schist; UK lst: Upper cretaceous limestone; LK: Lower cretaceous limestone; Met: Metamorphic rock fragment; Ter sst: Tertiary sandstone.