ANTIPLAC

Type Oceanographic cruise
Ship L'Atalante
Ship owner Ifremer
Dates 10/01/2007 - 23/01/2007
Chief scientist(s) PATRIAT Martin ORCID

GEO-OCEAN - UMR 6538

IFREMER - Technopôle Brest-Iroise

IUEM - Rue Dumont d'Urville

29280 Plouzané

https://www.geo-ocean.fr/
DOI 10.17600/7010010
Objective

The survey is part of the EXTRAPLAC programme for legal continental shelf extension. The Antilles (West Indies) islands are located on a so-called active margin characterized by the presence of an ocean subduction zone. This geological context is generally not very favourable for continental shelf extension purposes. However, on their Atlantic side, the West Indies do have specific geological features that give hope for a possible extension: there is an accretion front fairly distant from the coast and basins which are isolated but which have thick sediment cover. Because of this, the ANTIPLAC cruise was prepared to map the front of the accretion zone and the thickness of sediments offshore from this front. The cruise routes determined would: 1) cross the accretion front(whose position was already, quite accurately, known thanks to existing scientific publications) at a number of positions, particularly at the somewhat salient points on this front which would be best to calculate the outer boundary of the legal continental shelf; and 2)use seismic profiles to measure the thickness of sediments in the basins, particularly those located to the north of the Tiburon and especially the Barracuda ridges. This falls under the EXTRAPLAC project.

Data managed by SISMER

Bibliography

Publications

Deville Eric, Mascle A., Callec Y., Huyghe P., Lallemant S., Lerat O., Mathieu X., de Carillo C. Padron, Patriat MartinORCID, Pichot Thibaud, Loubrieux B., Granjeon D. (2015). Tectonics and sedimentation interactions in the east Caribbean subduction zone: An overview from the Orinoco delta and the Barbados accretionary prism. Marine And Petroleum Geology, 64, 76-103. Publisher's official version : https://doi.org/10.1016/j.marpetgeo.2014.12.015 , Open Access version : https://archimer.ifremer.fr/doc/00252/36373/


Pichot Thibaud, Patriat MartinORCID, Westbrook Graham, Nalpas T., Gutscher Marc-Andre, Roest WalterORCID, Deville E., Moulin M.ORCID, Aslanian DanielORCID, Rabineau MarinaORCID (2012). The Cenozoic tectonostratigraphic evolution of the Barracuda Ridge and Tiburon Rise, at the western end of the North America-South America plate boundary zone. Marine Geology, 303, 154-171. https://doi.org/10.1016/j.margeo.2012.02.001


Patriat MartinORCID, Pichot Thibaud, Westbrook Graham, Umber Marie, Deville E., Benard F., Roest WalterORCID, Loubrieu Benoit (2011). Evidence for Quaternary convergence across the North America-South America plate boundary zone, east of the Lesser Antilles. GEOLOGY, 39(10), 979-982. https://doi.org/10.1130/G32474.1


References of International Seminar Communications

T. Pichot, M. Patriat, G.K. Westbrook, T. Nalpas, M.A. Gutscher, W.R. Roest, M. Moulin, E. Deville, F. Bénard, 2011. Tectonic evolution of Barracuda Ridge and Tiburon Rise at the front of Barbados accretionary prism as recorded by Cenozoic stratigraphy. 19th Caribbean Geological Conference.

Bénard F. Deville E., Patriat M.,Le Drezen E., Loubrieu B., Thereau E., Umber M., Roest W.R., Vially R., 2008. The tiburon and barracuda ridges linked with a recent N-S American plates convergence: Results from the Antiplac Marine survey. International Geological Congress, Oslo.

Bénard F., Deville E., Le Drezen E, Loubrieu B., Maltese L., Patriat M., Thereau E., Umber M., Roest W., Vially R., 2007. Deformation processes at the Caribbean-North America-South America triple junction: Initial results of the 2007 ANTIPLAC marine survey. AGU fall meeting.

Patriat M., Bénard F., Deville E., Le Drezen E, Loubrieu B., Maltese L., Thereau E., Umber M., Roest W., Vially R., 2007. Ocean crust deformation at the North America-South America plate boundary: Results of the 2007 ANTIPLAC marine survey. AGU fall meeting.

References of Contracts reports (European Union, FAO, Convention, Collectivities...)

Demande partielle à la Commission des Limites du Plateau Continental conformément à l?article 76, paragraphe 8 de la Convention des Nations Unies sur le Droit de la Mer concernant les zones des Antilles françaises et des Iles Kerguelen, 2009.

Rapport d'avancement des travaux du groupe Extraplac, 2007.

Rapport de campagne ANTIPLAC, 2007. Rapports du groupe de travail EXTRAPLAC, Références 07-02.