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Northern Venezuela consists of a complex series of dismembered east-west–trending deformed belts that define the southern edge of the Caribbean plate. This contribution uses petrologic and geochemical data to define the tectono-magmatic affiliation of some of the belts. These include (1) mid-oceanic-ridge basalts (MORB) included within a mélange composed primarily of passive margin sediments in the Cordillera de la Costa belt, (2) Jurassic sublithospheric mantle and MORB in the Tinaco-Tinaquillo belt, (3) island-arc tholeiites of the Villa de Cura belt, and (4) oceanic island basalts and island-arc intrusive rocks on Gran Roque island, part of the Venezuelan and Dutch Leeward...

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