FN Archimer Export Format
PT J
TI Recent uplift of the Atlantic Atlas (offshore West Morocco): Tectonic arch and submarine terraces
BT 
AF BENABDELLOUAHED, Massinissa
   KLINGELHOEFER, Frauke
   GUTSCHER, M. -A.
   RABINEAU, Marina
   BIARI, Youssef
   HAFID, M.
   DUARTE, J. C.
   SCHNABEL, M.
   BALTZER, Agnes
   PEDOJA, K.
   LE ROY, P.
   REICHERT, C.
   SAHABI, M.
AS 1:1,2;2:2;3:1;4:1;5:1,2,3;6:4;7:5,6,7;8:8;9:9;10:10;11:1;12:;13:3;
FF 1:PDG-REM-GM-LGS;2:PDG-REM-GM-LAD;3:;4:;5:PDG-REM-GM-LGS;6:;7:;8:;9:PDG-REM-GM-LGG;10:;11:;12:;13:;
C1 IUEM, UMR6538, Lab Geosci Ocean, Rue Dumont Durville, F-29280 Plouzane, France.
   IFREMER, Dept Marine Geosci, ZI Pointe Diable, CS10070, F-29280 Plouzane, France.
   Univ Chouaib Doukkali, Fac Sci, Lab Geosci Marines & Sci Sols, URAC 45,BP 20, El Jadida 24000, Morocco.
   Fac Sci, Dept Geol, Lab Geophys & Environm, BP 133, Kenitra, Morocco.
   Univ Lisbon, Inst Dom Luiz, Fac Ciencias, P-1749016 Lisbon, Portugal.
   Univ Lisbon, Dept Geol, Fac Ciencias, P-1749016 Lisbon, Portugal.
   Monash Univ, Sch Earth Atmosphere & Environm, Melbourne, Vic 3800, Australia.
   Geozentrum Hannover, BGR, Stilleweg 2, D-30655 Hannover, Germany.
   Univ Nantes, CNRS UMR LETG 6554, Lab Geolittomer, F-44312 Nantes 3, France.
   Univ UCBN Caen, CNRS, UMR 6143 M2C, F-14000 Caen, France.
C2 UBO, FRANCE
   IFREMER, FRANCE
   UNIV CHOUAIB DOUKKALI, MOROCCO
   UNIV KENITRA, MOROCCO
   UNIV LISBON, PORTUGAL
   UNIV LISBON, PORTUGAL
   UNIV MONASH, AUSTRALIA
   BGR, GERMANY
   UNIV NANTES, FRANCE
   UNIV CAEN, FRANCE
SI BREST
SE PDG-REM-GM-LGS
   PDG-REM-GM-LAD
   PDG-REM-GM-LGG
UM LGO
IN WOS Ifremer jusqu'en 2018
   copubli-france
   copubli-europe
   copubli-univ-france
   copubli-int-hors-europe
   copubli-sud
IF 2.686
TC 10
UR https://archimer.ifremer.fr/doc/00378/48975/49382.pdf
LA English
DT Article
CR MIRROR1
   MIRROR2
BO L'Atalante
DE ;Atlas Mountain belt;Tectonic arch;Moroccan passive margin;Submerged terraces;Uplift
AB Re-examination of marine geophysical data from the continental margin of West Morocco reveals a broad zone characterized by deformation, active faults and updoming offshore the High Atlas (Morocco margin), situated next to the Tafelney Plateau. Both seismic reflection and swath-bathymetric data, acquired during Mirror marine geophysical survey in 2011, indicate recent uplift of the margin including uplift of the basement. This deformation, which we propose to name the Atlantic Atlas tectonic arch, is interpreted to result largely through uplift of the basement, which originated during the Central Atlantic rifting stage - or even during phases of Hercynian deformation. This has produced a large number of closely spaced normal and reverse faults, “piano key faults”, originating from the basement and affecting the entire sedimentary sequence, as well as the seafloor. The presence of four terraces in the Essaouira canyon system at about 3500 m water depth and “piano key faults” and the fact that these also affect the seafloor, indicate that the Atlantic Atlas is still active north of Agadir canyon. We propose that recent uplift is causing morphogenesis of four terraces in the Essaouira canyon system. In this paper the role of both Canary plume migration and ongoing convergence between the African and Eurasian plates in the formation of the Atlantic Atlas are discussed as possibilities to explain the presence of a tectonic arch in the region. The process of reactivation of passive margins is still not well understood. The region north of Agadir canyon represents a key area to better understand this process. 
PY 2017
PD JUL
SO Tectonophysics
SN 0040-1951
PU Elsevier Science Bv
VL 706-707
UT 000402447000004
BP 46
EP 58
DI 10.1016/j.tecto.2017.03.024
ID 48975
ER

EF