Les microbialites de l'Anti-Atlas occidental (Maroc) : marqueurs stratigraphiques et témoins des changements environnementaux au Cambrien inférieur |
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| Authors: | Mohammed Benssaou Naima Hamoumi |
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| Institution: | 1. Département de géologie, faculté des sciences, université Ibn-Zohr, Agadir, Maroc;2. Département de géologie, faculté des sciences, université Mohammed-V, Rabat, Maroc |
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| Abstract: | Three microbialite forms are recognized in the Lower-Cambrian succession of Irherm area in the western Anti-Atlas (Morocco). Stromatolites, which correspond to non-calcified shallow marine laminated microbialites, are well developed in the basal Lower-Cambrian succession. Occurrence of calcified microbial thrombolites, in the middle part of this succession, reflects an increasing sea level from the peritidal zone to the subtidal environment. In the upper part of this succession, a second increasing water depth event and the development of branching archaeocyathan reefal framework lead to dendritic microbialite emergence. To cite this article: M. Benssaou, N. Hamoumi, C. R. Geoscience 336 (2004). |
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| Keywords: | Anti-Atlas Cambrien inférieur microbialites archeocyathes niveau marin Maroc Anti-Atlas Lower Cambrian microbialites archaeocyathes sea level Morocco |
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