Architecture and composition of the Upper Burdigalian z-coral build-ups of southern Corsica (Mediterranean) |
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| Institution: | 1. Cz N. Assas, La géologie appliquée, 7, avenue de Toulon, 13006 Marseille, France;2. Muséum national d’histoire naturelle, département Histoire de la Terre, 8, rue Buffon, CP38, 75005 Paris cedex 05, France;3. CNRS UMR 5243 Géosciences Montpellier, Université Montpellier 2, place Eugène-Bataillon, 34095 Montpellier cedex 05, France |
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| Abstract: | In southern Corsica, three successive Upper Burdigalian coral reef episodes (R1, R2 subdivided into R2A and R2B subunits, and R3) developed within the Cala di Labra Formation. Tabular corals dominated under high water energy and siliciclastic input conditions. The R1 reefs show the highest coral diversity with 16 species described for the first time. A coral impoverishment was recorded in the R2 and R3 reefal episodes. The reefs did not reach a climax growth stage, except the R1 ones. Analogous to North Sardinian reefs, they reflect local vanishing conditions in the Corsican–Sardinian block through Upper Burdigalian because of constant siliciclastic inputs and deepening of the Bonifacio straight. |
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| Keywords: | Upper Burdigalian Mediterranean Corsica Coral reefs Biodiversity Sedimentary architecture |
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