Figure 4. Zones and terranes of the Variscan orogen in the Hesperic Massif of Iberia. A. Detailed map of the main terranes in the Portuguese part of the Hesperic Massif adjacent to the study area (modified from Ribeiro and Silva, in press). 1 = Iberian Terrane; 2 = Northern Ophiolite; 3 = South Oceanic Terrane, which includes the southern ophiolite (so = Beja-Acebuches ophiolite and ophiolite klippen) and the Pulo do Lobo Unit (PL); 4 = South Portuguese Terrane; 5 = Northern Continental Terrane; 6 = Mesozoic–Cenozoic Borderland: includes the Lusitanian Basin (SB = Sado Basin; TB = Tagus Basin; LT = Lower Tagus; UT = Upper Tagus) and the Algarve Basin (AB); 7 = Upper Cretaceous intrusives (Si = Sintra; Ss = Sines; Me = Monchique); 8 = Lisboa Basaltic complex; 9 = reverse fault (dashed = inferred); 10 = strike-slip fault; A = Arrábida; B = Beja; BAF = Southern Alentejo Flysch Group; Br = Bragança Massif; BT = Berlengas Suspect Terrane; C = Campo Maior; Ca = Carrapateira; Co = Coimbra; F = Ferreira do Zêzere; FFT = Ferreira do Alentejo-Ficalho Thrust; M = Mértola; MF = Messejana Fault; Mo = Morais Massif; N = Neves-Corvo; NF = Nazaré Fault; P = Portalegre; PB = Pyrite belt; Pe = Peniche; PT = Porto-Tornar Fault; SWP = Southwest Portuguese Domain; T = Tomar; TBC = Tomar-Badajoz-Córdoba shear zone. The Ferreira do Zêzere-Portalegre thrust runs between F and P. The Ferreira do Alentejo-Ficalho thrust separates the northern end of the Pulo do Lobo Unit from the Beja-Acebuches ophiolite. A is a detailed version of the portion of B adjacent to the study area. B. Terranes in the Hesperic Massif (modified from Quesada et al., 1994). Symbols as in A. CO = Cabo Ortegal complex; O = Ordenes complex. C. Classical subdivision of the Hesperic Massif. CIZ = Central Iberian Zone; OMZ = Ossa Morena Zone; SPZ = South Portuguese Zone; WALZ = West Asturian Leonese Zone; CaC = Cantabrian Zone; LB = Lusitanian Basin; AB = Algarve Basin; GuB = Guadalquivir Basin; BC = Betic Cordillera; Br = Bragança Massif; Mo = Morais Massif. (Modified from Ribeiro and Silva, in press).