Figure 5. Sketch map showing the distribution of marginal sedimentary basins along the west Iberia Margin (from Murillas et al., 1990). SA = Serra da Arrábida; P-C-T = Porto-Coimbra-Tomar Fault; VDG = Vasco da Gama Seamount. The lines labeled A–F show the location of structural cross sections shown in Figure 6. The Berlenga horst is located at the northwest end of the line E-E'.