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1 Laboratoire de Géologie structurale, Faculté des Sciences Semlalia, Marrakech (Maroc).
2 Institut universitaire européen de la mer, Université de Bretagne occidentale, Brest.
Abstract
Dans lAnti-Atlas (sud du Maroc), la couverture du Néo-protérozoïque supérieur, discordante sur les structures panafricaines, sorganise en « séries » volcaniques et détritiques (Groupe du Saghro et de Ouarzazate), recouvertes par les dépôts carbonatés cambriens. De nouvelles observations réalisées dans cette couverture montrent quelle résulte dun épisode extensif dont témoignent, outre les structures extensives, des mises en place de magmas et des manifestations hydrothermales. Cet épisode, qui se maintiendra jusquau Cambrien inférieur, est interprété en termes dextension continentale post-panafricaine.
Key Words: Anti-Atlas (Maroc) Extension continentale Néo-Protérozoïque Cambrien
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