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
USS Intrepid (CV-11) a sea hunt for the Venezuelan freighter "Anzoátegui", whose mutinous second mate had led a group of pro-Castro terrorists in hijacking the vessel. After the Communist pirates had surrendered at Rio de Janeiro, the carrier returned to Norfolk on 23 March. "Intrepid" operated along the Atlantic Coast for the next year from Nova Scotia to the Caribbean perfecting her antisubmarine techniques. On 11 June 1964, she left Norfolk carrying midshipmen to the Mediterranean for a hunter-killer at sea training with the 6th Fleet. While in the Mediterranean, "Intrepid" aided in the surveillance of a Soviet task group. En route home