Figure 3. Early Pliocene paleogeographic map of northwestern South America. Not shown on the Caribbean nappe: (1) post-obduction basins in Colombia (Cauca-Patia; Atrato-Choco-Pacifico), and (2) syn-obduction halite-dissolution basins/formations in Venezuela (Tuy/Aramina; Carupano/Cubagua). B=Barbados, G=Grenada, T=Tobago.