(A) Crustal thickness map constructed by subtracting the basement from the moho depth maps (Supp. Data 1C and 1D). The hatched line is the 10 km iso-thickness marking the transition between the necking and the distal domains. (B) “Mainly rift” tectonic model redrawn from Bosworth (2015). (C) Mainly ocean tectonic model redrawn from Delaunay et al. (2023). A-DS-F: Aqaba-Dead-Sea Fault; ZFZ: Zabargad Fracture Zone. Projection system: Ain el Abd 1970, Aramco, Lambert 2. Rotation: −26.75°.