Evolution of the Caribbean Plate can be modeled by motions
about six successive rotation poles. Opening of Cayman Trough has occurred
since 49.5 Ma through westward motion of the Caribbean Plate,
eastern Greater Antilles and Chortis Block. Before 49.5 Ma, the eastern
Greater-Antilles were west of Cuba, and the southeastern margins of
Yucatan and the Nicaragua Rise (Chortis) were aligned. From 67.5 to
49.5 Ma the Caribbean Plate rotated clockwise, opening the Yucatan
Basin. From 100 Ma to 67.5 Ma, the Caribbean Plate, with Cuba attached,
moved along the southeastern margin of Yucatan-Chortis. At 130 Ma it
was attached to northwestern South America
