Caribbean Plate 1843 in this region are possibly megathrust earthquakes. Along the geologically complex southern boundary, the Caribbean Plate interacts with the South American Plate forming Barbados, Trinidad and Tobago (all on the Caribbean Plate), and islands off the coast of Venezuela (including the Leeward Antilles) and Colombia. This boundary is in part the result of transform faulting along with thrust faulting and some subduction. The rich Venezuelan petroleum fields possibly result from this complex plate interaction. The Caribbean plate is moving eastward about 22 millimeters per year in relation to the South American plate. In Venezuela much of the movement between
Caribbean region of Colombia Caribbean region of Colombia The Caribbean region of Colombia or Caribbean coast region is in the north of Colombia and is mainly composed of eight Departments located contiguous to the Caribbean. The area covers a total land area of including the San Andres Island Archipelago of San Andrés, Providencia and Santa Catalina in the Caribbean sea and corresponding to approximately 1/10 of the total territory of Colombia. The Caribbean region of Colombia is home to approximately 9 million people according to the Colombian Census 2005. The Caribbean region coast extends from the Gulf of Urabá to the Gulf of Venezuela.