Everything about The Cayman Trough totally explained
The
Cayman Trough, or
Cayman Trench, also called
Bartlett Deep, or
Bartlett Trough, is a complex
transform fault zone which contains a small
spreading ridge on the floor of the western
Caribbean Sea between
Jamaica and the
Cayman Islands. It forms part of the
tectonic boundary between the
North American Plate and the
Caribbean Plate. It extends from the
Windward Passage, going south of the
Sierra Maestra Cuba toward
Guatemala. The transform continues onshore as the
Motagua Fault which cuts across Guatemala and back offshore under the Pacific Ocean where it intersects the
Middle America Trench subduction zone. The relatively narrow trough trends east-northeast to west-southwest and has a maximum depth of 7,686 meters (25,216 ft); it's the deepest point in the Caribbean Sea. Within the trough is a slowly spreading north-south
ridge which may be the result of an offset or gap of approximately 420 kilometers (260 mi) along the main fault trace.
During the
Eocene the trough was the site of a
subduction zone which formed the
volcanic arc of the
Cayman Ridge and the
Sierra Maestra volcanic terrain of Cuba to the north as the northeastward moving
Caribbean Plate was subducted along the Cuban microplate (Sigurdsson).
The 1989 science fiction film
The Abyss is set in the depths of the trench.
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