Fig. 1. (a) Map of the northeastern Caribbean plate margin. Box shows location of the northern Hispaniola area. DR, Dominican Republic (b) Geological map of Septentrional Cordillera and SamanĂ¡ Peninsula modified from Draper and Nagle (1991), Draper et al. (1994), and Escuder-Viruete et al. (2011a, 2013a). SFZ, Septentrional fault zone. (c) Schematic lithologic sections of the Cretaceous igneous and metamorphic complexes of the Caribbean subduction-accretionary prism discussed in the text (Escuder-Viruete et al., 2013a, 2013b). IAT, island-arc tholeiite; BON, boninitic rocks; (1) large-scale extensional shear zone (91-85 Ma); (2) Jobito late detachment (75-71 Ma); (3) syn-collisional thrusts (Maastrichtian-Lower Eocene).