Record Details

Magnetic studies in the Cayman Trough, Caribbean Sea

DRS at CSIR-National Institute of Oceanography

View Archive Info
 
 
Field Value
 
Title Magnetic studies in the Cayman Trough, Caribbean Sea
 
Creator Ramana, M.V.
Ramprasad, T.
Grahm, B.
Welsh, R.
Pathak, M.C.
 
Subject magnetic anomalies
bathymetry
spreading centres
oligocene
 
Description About 2400 line km of magnetic and bathymetric data were collected between the western margin of Jamaica and the eastern margin of Belize covering the Cayman Trough. The echograms show rugged topography between 80 degrees W and 85 degrees W longitude. The mid-Cayman spreading centre is characterized by a rift valley with 4000 m depth. Sea-floor spreading-type linear magnetic anomalies have been observed in the Cayman Trough. A synthetic sea-floor-spreading model is generated across the spreading axis with crustal block thickness of 1 km and a susceptibility of 0.002 cgs units. The anomaly numbers 1 to 8 have been identified on the west and anomalies 1 to 5A on the east of the spreading axis which is located around 81 degrees 39'W. The half-spreading rates of 10 mm yr sup(-1) (0-2.47 Ma) and 20 mm yr sup(-1) (2.47-27.74 Ma) are estimated in the Cayman Trough. The crust west of anomaly 8 appears to form the Continent Ocean Boundary off Belize. It is suggested that the opening of the Cayman Trough was initiated prior to late Oligocene
 
Date 2009-01-25T06:19:41Z
2009-01-25T06:19:41Z
1995
 
Type Journal Article
 
Identifier Caribbean Marine Studies, 30-38p.
http://drs.nio.org/drs/handle/2264/2388
 
Language en
 
Rights Copyright [1995]. All efforts have been made to respect the copyright to the best of our knowledge. Inadvertent omissions, if brought to our notice, stand for correction and withdrawal of document from this repository.
 
Publisher Institute of Marine Affairs, Trinidad and Tobago