Le Silurien de la région d'Oulad Abbou (Meseta occidentale,Maroc) : une sédimentation péritidale sous contrôle tectonique |
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| Authors: | Ahmed Attou Naima Hamoumi |
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| Institution: | 2. Département des sciences de la Terre, faculté des sciences, université Mohamed-V, Agdal, BP 1014, Rabat, Maroc |
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| Abstract: | In the Oulad Abbou syncline, western coastal Meseta, the Silurian deposits exhibit siliciclastic or mixed siliciclastic/carbonate tidal facies that recorded alkaline basalt flows and syn-sedimentary deformations. These facies are staked into peritidal shallowing upward sequences reflecting the evolution from an infratidal to a supratidal environment. These sequences recorded low-amplitude and high-frequency sea-level variations. The built-up of these rhythmic sequences is related to distensive tectonic that allowed the development of isolated platform from extensive siliciclastic influx. This tectonic event is well recorded in the palaeogeographic evolution of the northern Gondwana platform during the Lower Palaeozoic time. To cite this article: A. Attou, N. Hamoumi, C. R. Geoscience 336 (2004). |
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| Keywords: | Oulad Abbou Maroc Silurien faciès de marées séquences péritidales tectonique distensive Oulad Abbou Morocco Silurian tidal facies peritidal sequences distensive tectonic |
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