Figure 2. Simplified tectonic map of Alboran region. AH, Al-Hoceima; AR, Alboran Ridge; EAB, East Alboran Basin; NF, Nekor fault; SAB, South Alboran Basin; SG, Strait of Gibraltar; WAB, West Alboran Basin; p, location of Rhonda (Spain) and Beni-Bousera (Morocco) peridotites; b, Early Miocene basaltic dykes; c, Mid Miocene calc-alkaline volcanism; s, Late Miocene potassic volcanism; a = Pliocene and Quaternary alkali basalt flows . Note absence of volcanism west of Malaga and concentration of calc-alkaline volcanism in the center of the Alboran Sea. ).