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GEOREF RECORD

Evidence for Quaternary convergence across the North America-South America plate boundary zone, east of the Lesser Antilles

M. Patriat, T. Pichot, G. K. Westbrook, M. Umber, E. Deville, F. Benard, W. R. Roest and B. Loubrieu
Evidence for Quaternary convergence across the North America-South America plate boundary zone, east of the Lesser Antilles
Geology (Boulder) (October 2011) 39 (10): 979-982

Abstract

New seismic and bathymetric data reveal that the plate boundary zone between the North American and South American plates, east of the Caribbean, has occupied a >200-km-wide zone of localized basement uplift and folding, and of faulting of the sedimentary cover, during the early Pleistocene to Holocene. This zone, which includes the Barracuda Ridge and Tiburon Rise, exhibits north-south compressional structures and continues eastward up to 500 km from the boundary of the Caribbean plate. A sequence of young turbidite-dominated sediments fills the basin between these two ridges and shows synsedimentary deformation; the base of the sequence is of early Pleistocene age, dated by biostratigraphic correlation with Deep Sea Drilling Project Site 27. Recent deformation in the turbidite-filled trough north of the Barracuda Ridge is shown by uplift of the seafloor at the crests of anticlines, across which the shallowest sediment layers thin or pinch out.


ISSN: 0091-7613
EISSN: 1943-2682
Coden: GLGYBA
Serial Title: Geology (Boulder)
Serial Volume: 39
Serial Issue: 10
Title: Evidence for Quaternary convergence across the North America-South America plate boundary zone, east of the Lesser Antilles
Affiliation: IFREMER (Institut Francais de Recherche pour l'Exploitation de la Mer), Plouzane, France
Affiliation: ANTIPLAC Cruise PartyInternational
Pages: 979-982
Published: 201110
Text Language: English
Publisher: Geological Society of America (GSA), Boulder, CO, United States
References: 25
Accession Number: 2011-097157
Categories: Quaternary geologyApplied geophysicsSolid-earth geophysics
Document Type: Serial
Bibliographic Level: Analytic
Annotation: With GSA Data Repository Item 2011286
Illustration Description: illus. incl. sects., sketch map
N15°00'00" - N17°00'00", W60°00'00" - W55°00'00"
Secondary Affiliation: IFP Energies Nouvelles, FRA, France
Country of Publication: United States
Secondary Affiliation: GeoRef, Copyright 2017, American Geosciences Institute. Reference includes data from GeoScienceWorld, Alexandria, VA, United States. Reference includes data supplied by the Geological Society of America, Boulder, CO, United States
Update Code: 201150
Program Name: DSDPDeep Sea Drilling Project
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