Regional structural geology and plate tectonic setting of Trinidad and Tobago study area. The Caribbean plate currently moves ~20 mm/yr eastward relative to South America (WEBER et al. 2001a) along the right-stepping El Pilar (EPF) and Central Range (CRF) strike-slip faults and across associated Gulf of Paria and Gulf of Cariaco pull-aparts. The Lesser Antilles is a modern arc developing as the Caribbean plate overrides and subducts Atlantic lithosphere of the North and South American plates. Older oceanic forearc and arc lithosphere that was obducted over and accreted to South American continent crops out mainly as a series of submerged islands including: Tobago, Margarita (M), Blanquilla (BI), Los Roques (LR), Bonaire (B), Curacao (C), Aruba (A), and Los Monjes (LM); the Villa de Cura nappe (VdC) is its largest “trapped” onland exposure.