FN Archimer Export Format
PT J
TI The polyphased tectonic evolution of the Anegada Passage in the northern Lesser Antilles subduction zone
BT 
AF LAURENCIN, Muriel
   MARCAILLOU, B.
   GRAINDORGE, D.
   KLINGELHOEFER, Frauke
   LALLEMAND, S.
   LAIGLE, M.
   LEBRUN, J. -F.
AS 1:1;2:2;3:1;4:3;5:4;6:2;7:5;
FF 1:;2:;3:;4:PDG-REM-GM-LAD;5:;6:;7:;
C1 Univ Bretagne Occidentale, Inst Univ Europeen Mer, Geosci Ocean, UMR 6538, Pl N Copernic, Plouzane, France.
   Univ Cote Azur, CNRS, Observ Cote Azur, IRD,Geoazur, Valbonne, France.
   IFREMER, Brest, France.
   Univ Montpellier, Geosci Montpellier, Montpellier, France.
   Univ Antilles, Geosci Montpellier, Pointe a Pitre, Guadeloupe, Guadeloupe.
C2 UBO, FRANCE
   CNRS, FRANCE
   IFREMER, FRANCE
   UNIV MONTPELLIER, FRANCE
   UNIV ANTILLES, FRANCE
SI BREST
SE PDG-REM-GM-LAD
UM LGO
IN WOS Ifremer jusqu'en 2018
   copubli-france
   copubli-univ-france
IF 3.583
TC 25
UR https://archimer.ifremer.fr/doc/00386/49710/50236.pdf
LA English
DT Article
CR ANTITHESIS 3
   ANTITHESIS LEG1
   ANTITHESIS LEG2
   ANTITHESIS2 DEPLO
   ANTITHESIS2 RECUP
BO Pourquoi pas ?
   L'Atalante
   Antea
DE ;oblique subduction zone;strain partitioning;Anegada Passage;Lesser Antilles margin;multichannel seismic reflection
AB The influence of the highly oblique plate convergence at the northern Lesser Antilles onto the margin strain partitioning and deformation pattern, although frequently invoked, has never been clearly imaged. The Anegada Passage is a set of basins and deep valleys, regularly related to the southern boundary of the Puerto-Rico-Virgin-Islands (PRVI) microplate. Despite the publications of various tectonic models mostly based on bathymetric data, the tectonic origin and deformation of this Passage remains unconstrained in the absence of deep structure imaging. During cruises Antithesis 1 and 3 (2013 - 2016), we recorded the first deep multichannel seismic images and new multibeam data in the northern Lesser Antilles margin segment in order to shed a new light on the structure and tectonic pattern of the Anegada Passage. We image the northeastern extent of the Anegada Passage, from the Sombrero Basin to the Lesser Antilles margin front. Our results reveal that this northeastern segment is an EW-trending left-stepping en-échelon strike-slip system that consists of the Sombrero and Malliwana pull-apart basins, the Malliwana and Anguilla left-lateral faults and the NE-SW compressional restraining bend at the Malliwana Hill. Reviewing the structure of the Anegada Passage, from the South of Puerto-Rico to the Lesser Antilles margin front, reveals a polyphased tectonic history. A past NW-SE extension, possibly related to the rotation or escape of the PRVI block due to collision of the Bahamas Bank, and a currently active WNW-ESE strike-slip deformation associated to the shear component of the strain partitioning resulting from the subduction obliquity. 
PY 2017
PD MAY
SO Tectonics
SN 0278-7407
PU Amer Geophysical Union
VL 36
IS 5
UT 000403719800008
BP 945
EP 961
DI 10.1002/2017TC004511
ID 49710
ER

EF