Structure sismique du socle paléozo??que du bassin des Doukkala,Môle côtier,Maroc occidental. Indication en faveur de l'existence d'une phase éo-varisqueSeismic structure of the Doukkala basin,Palaeozoic basement,western Morocco: a hint for an Eovariscan fold-and-thrust belt |
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Authors: | Hassan Echarfaoui Mohamed Hafid Abdallah A??t Salem |
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Affiliation: | 1. Laboratoire de géologie pétrolière et d''hydrogéologie (GPH), département de géologie, faculté des sciences, BP 133, Kénitra 14000, Maroc;2. Onarep, BP 8030 Rabat, Maroc |
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Abstract: | Seismic profiles and well data from the Doukkala basin unravel the structure of the Palaeozoic basement and suggest that this coastal zone of western Morocco was affected by a compressive phase during the Frasnian. This resulted in the formation of upright, plurikilometric folds associated with reverse faults (North Doukkala), and of asymmetrical folds associated with mostly west verging ramps (South Doukkala). Folding involved all pre-Upper Frasnian formations and caused partial or total hiatus of Upper Frasnian–Strunian strata. This event can be correlated with the orogenic phase reported from more internal domains of the Morocco Hercynian belt, where it is referred to as the ‘Bretonne’ or ‘Eovariscan’ phase. To cite this article: H. Echarfaoui et al., C. R. Geoscience 334 (2002) 13–20 |
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Keywords: | Palaeozoic reflection seismic Morocco Doukkala ‘Bretonne’ phase compression Paléozo??que sismique Maroc Doukkala phase bretonne compression Géophysique interne Internal Geophysics |
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