Geography of Trinidad and Tobago obtaining full strength. Geography of Trinidad and Tobago Trinidad and Tobago is an archipelagic republic in the southern Caribbean between the Caribbean Sea and the North Atlantic Ocean, northeast of Venezuela. They are southeasterly islands of the Lesser Antilles, Monos, Huevos, Gaspar Grande (or Gasparee), Little Tobago, and St. Giles Island. Trinidad is off the northeast coast of Venezuela and south of the Grenadines. The island measures in area (comprising 93.0% of the country's total area) with an average length of and an average width of . The island appears rectangular in shape with three projecting peninsular corners. Tobago is
Geology of Trinidad and Tobago the North Coast Schist, mafic plutonic rocks, the Tobago Volcanic Group and mafic dikes. Geology of Trinidad and Tobago The geology of Trinidad includes two different islands with different rock forms. The oldest rocks in Trinidad are low-grade metamorphosed phyllite, limestone and quartzite from the late Jurassic. Cretaceous quartzite, phyllite, shale and limestone outcrops around the Toco district. The east of the island is the only area with volcanic rocks exposed at the surface, including basalt, ash and breccia. Phyllite shale spans the north coast. Laventille Formation limestone is associated with these rocks and contains a gypsum layer. Flysch, dark