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The relatively narrow trough trends east-northeast to west-southwest and has a maximum depth of 7,686 metres (25,217 ft). Within the trough is a slowly spreading north–south ridge which may be the result of an offset or gap of approximately 420 kilometres (260 mi) along the main fault trace.
The Von Damm Hydrothermal Field is a field of hydrothermal vents located just south of Grand Cayman in the Caribbean, on the Mid-Cayman Rise in the Cayman Trough. It is approximately 24 kilometres (15 mi) south of the Beebe Vent Field. The vent field is named in commemoration of geochemical oceanographer Karen Von Damm, who died in 2008. [1]
The Beebe vent field was initially detected in October 2009 by CTD, Eh, and optical backscatter anomalies in the water column above the Mid-Cayman Rise aboard the R/V Cape Hatteras. [ 3 ] [ 4 ] The team deployed HROV Nereus to conduct surveys which identified a double hydrothermal plume at 3,900 metres (12,800 ft) and 4,250 m (13,940 ft) deep ...
[2] [3] The sea's deepest point is the Cayman Trough, between the Cayman Islands and Jamaica, at 7,686 m (25,217 ft) below sea level. The Caribbean coastline has many gulfs and bays: the Gulf of Gonâve, the Gulf of Venezuela, the Gulf of Darién, Golfo de los Mosquitos, the Gulf of Paria and the Gulf of Honduras.
The formation of the Cayman Trough produced the last significant tectonic feature on the islands after 39 million years ago, with sinistral strike-slip faults. A structural block produced as a result creates a 5.7 kilometer sinistrally offset contact between the Water Island and Louisenhoj formations. [1]
This site is located on the 110 km long, ultraslow spreading Mid-Cayman Rise within the Cayman Trough. [101] In early 2013, the deepest known hydrothermal vents were discovered in the Caribbean Sea at a depth of almost 5,000 metres (16,000 ft).
Additionally, the Cayman Trough, which is a pull-apart basin within a transform fault zone, [10] is not an oceanic trench. Trenches, along with volcanic arcs and Wadati–Benioff zones (zones of earthquakes under a volcanic arc) are diagnostic of convergent plate boundaries and their deeper manifestations, subduction zones .
Over the course of 10 days, the ship mapped the rift valley walls of the Mid-Cayman Rise and northern wall of the Cayman Trough Fracture zone using the ship's deep-water multibeam sonar; explored the water column for hydrothermal activity using a CTD rosette, in situ sensors, and shipboard dissolved methane analysis; and conducted detailed ...
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