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Comptes Rendus Géoscience
Volume 338, n° 1-2
pages 11-24 (janvier 2006)
Doi : 10.1016/j.crte.2005.11.012
Received : 4 October 2005 ;  accepted : 17 November 2005
Tectonics of the Anti-Atlas of Morocco
Tectonique de lʼAnti-Atlas marocain

Martin Burkhard a, , Séverine Caritg a, Urs Helg b, Charles Robert-Charrue a, Abderrahmane Soulaimani c
a Institut de géologie, université de Neuchâtel, rue Émile-Argand 11, CP 2, 2007 Neuchâtel, Switzerland 
b BUWAL, Bundesamt für Umwelt, Wald und Landschaf, 3003 Bern, Suisse 
c Faculté des sciences Semlalia, université Cadi-Ayyad, av. Moulay-Abdellah, BP S20, Marrakech, Maroc 

Corresponding author.

The Anti-Atlas is reviewed and examined in the light of its geodynamic significance as a Palaeozoic basin and fold belt. Shortening is accommodated by polyharmonic buckle folding of the cover in a thick-skinned fashion without the development of any significant thrust/duplex systems. The Anti-Atlas is heavily inverted deep intracratonic basin, rather than a former passive margin of the Palaeo-Tethys Ocean. Inversion took place in Late Carboniferous to Early Permian times. Main shortening directions changed from NW-SE to north-south and maybe NE-SW through time, leading to the development of dome and basin patterns on scales from 100 m to 10 km. To cite this article: M. Burkhard et al., C. R. Geoscience 338 (2006).

The full text of this article is available in PDF format.

LʼAnti-Atlas est revu et examiné sous lʼangle de sa signification géodynamique comme bassin paléozoïque et comme chaîne plissée paléozoïque. Le raccourcissement est accommodé par le plissement polyharmonique de la couverture, avec une nette implication du socle. Aucun système significatif de chevauchement ni duplex ne sʼest développé. LʼAnti-Atlas est un bassin intracratonique fortement inversé plutôt quʼune partie de la marge passive de la Paléotéthys. Lʼinversion doit dater du Carbonifère tardif/Permien précoce. La direction du raccourcissement a changé au cours du temps depuis une direction NW-SE vers une direction nord-sud et peut-être même NE-SW, ce qui conduit à la formation de figures dʼinterférences de plis en dômes et bassins aux échelles allant de 100 m à 10 km. Pour citer cet article : M. Burkhard et al., C. R. Geoscience 338 (2006).

The full text of this article is available in PDF format.

Keywords : Folds and folding, Continental contractional orogenic belts, Africa, Morocco, Variscan-Hercynian

Mots-clés : Plis et plissement, Chaînes orogéniques continentales de contraction, Afrique, Maroc, Varisque-Hercynien

© 2005  Académie des sciences@@#104156@@
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