FN Archimer Export Format
PT J
TI Formation, segmentation and deep crustal structure variations along the Algerian margin from the SPIRAL seismic experiment
BT 
AF Klingelhoefer, Frauke
   Déverchère, Jacques
   Graindorge, David
   Aïdi, Chafik
   Badji, Rabie
   Bouyahiaoui, Boualem
   Leprêtre, Angélique
   Mihoubi, Abdelhafid
   Beslier, Marie-Odile
   Charvis, Philippe
   Schnurle, Philippe
   Sage, Francoise
   Medaouri, Mourad
   Arab, Mohamed
   Bracene, Rabah
   Yelles-Chaouche, Abdelkarim
   Badsi, Madjid
   Galvé, Audrey
   Géli, Louis
AS 1:1;2:2;3:2;4:3;5:4;6:3;7:2;8:4;9:5;10:5;11:1;12:5;13:4;14:4;15:4;16:3;17:4;18:5;19:1;
FF 1:PDG-REM-GM-LAD;2:;3:;4:;5:;6:;7:;8:;9:;10:;11:PDG-REM-GM-LGS;12:;13:;14:;15:;16:;17:;18:;19:PDG-REM-GM-LAD;
C1 Ifremer, Dep. of Marine Geosciences, ZI de la Pointe de Diable, 29280, Plouzané, France
   Géosciences Océan, UBO-CNRS (UMR6538), IUEM, Plouzané, France
   Centre de Recherche en Astronomie Astrophysique et Géophysique (CRAAG), Algiers, Algeria
   Sonatrach, DXP, Boumerdès, Algeria
   Université Côte d'Azur, CNRS, Observatoire de la Côte d'Azur, IRD, Géoazur, 250 Rue Albert Einstein, 06560, Valbonne, France
C2 IFREMER, FRANCE
   UBO, FRANCE
   CRAAG, ALGERIA
   SONATRACH, ALGERIA
   UNIV NICE, FRANCE
SI BREST
SE PDG-REM-GM-LAD
   PDG-REM-GM-LGS
UM GEO-OCEAN
IN WOS Ifremer UMR
   WOS Cotutelle UMR
   copubli-france
   copubli-univ-france
   copubli-int-hors-europe
   copubli-sud
IF 2.3
TC 7
UR https://archimer.ifremer.fr/doc/00738/85005/89958.pdf
LA English
DT Article
CR SARDINIA
   SPIRAL
BO L'Atalante
DE ;Algerian continental margin;Wide-angle seismic;Crustal nature;Mediterranean basin;Reflection seismic;Tectonics
AB The Algerian continental margin in the western Mediterranean formed as a back-arc basin and is today reactivated by the convergence between the African and Eurasian plates. It is one of the very rare examples of passive margins undergoing inversion expressed in a moderate seismicity of the margin and is possibly giving way for future subduction. With the objective to better know the deep structure of the margin and its associated basin, the origin of its seismicity and to study the mechanism of reactivation, five existing wide-angle seismic profiles along the margin are revisited. They were located offshore Mostaganem, Tipasa, Greater Kabylia, Jijel and Annaba. These profiles show that the basin is underlain by a 5 km thick crust of oceanic magmatic origin, possibly created at non-continuous small accretionary ridge segments. The continent-ocean transition zone is narrow, except at the easternmost profile, possibly due to an opening including a shear movement. No high velocity zone in the lower crust corresponding to mantle rocks has been imaged at the Algerian margin. The continental crust is thinned in a narrow and strongly segmented manner. It is widest (70 km) in the central segment offshore Greater Kabylia where there is a wider zone of distal thinned continental crust than on the other margin segments. The thickest crust detected during this survey corresponds to the African continental crust and the Kabylides blocks and is about 22–25 km thick. This reduced thickness in comparison with unthinned continental crust might be due to the influence of earlier subduction at the margin, in form of erosion by the subducting slab. 
PY 2022
PD FEB
SO Journal Of African Earth Sciences
SN 1464-343X
PU Elsevier BV
VL 186
UT 000745065000001
DI 10.1016/j.jafrearsci.2021.104433
ID 85005
ER

EF