Simplified seriate cross sections showing the geometry of the Tardets-Mauléon infilling and the hypothetic structural relationships between the old european and iberian margins of the Albian trough. 1: Quaternary; 2: Miocene; 3:Senonian to Eocene (black broken line: base of the Tertiary; green line: Turono-Coniacian megaturbidite); 4: Upper Albian – Turonian; 5: Aptian-Lower Albian; 6: Jurassic – Lower Cretaceous (ante Aptian); 7: Triassic; 8: Permian; 9: Palaeozoic (iberian margin); 10: Palaeozoic (european margin); 11: Grand Rieu ridge.