Abstract
The study area is situated 200 km to the east of Trinidad; in the southern sector of the Barbados accretionary wedge. Analysis of seismic profiles and Seabeam bathymetric data, permit the identification of an important dextral wrench fault system oriented N95°E which induced morphostructural elements, characteristic of this type of kinematics in a thick sedimentary cover, separated from its basement by a décollement level. This décollement level is due to the presence of Miocene clay beds, supersaturated with water which under the effect of stresses, trigger clay diapiric processes in this transtensional sector. We shall demonstrate that the boundary between the Caribbean Plate and the South American plate continues as far as 250 km to the east of Trinidad.
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