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1 Département de Géologie et d'Océanographie, Unité Mixte de Recherche du Centre National de la Recherche Scientifique 5805 "Environnements et Paléoenvironnements Océaniques et Côtiers," Université Bordeaux 1, Avenue des Facultés, 33405 Talence, France
2 Institut Français de Recherche pour l'Exploitation de la Mer (IFREMER), Géosciences Marines, Laboratoire Environnements Sédimentaires, BP70, 29280 Plouzané, France
3 Département de Géologie et d'Océanographie, Unité Mixte de Recherche du Centre National de la Recherche Scientifique 5805 "Environnements et Paléoenvironnements Océaniques et Côtiers," Université Bordeaux 1, Avenue des Facultés, 33405 Talence, France
Flood-generated turbidity currents represent an important process of marine sedimentation. However, no deposit related to this process has yet been described at sea. Turbiditic sequences cored at 2000 m water depth in the Mediterranean show tractive structures and superposition of reverse and normal grading. They are related to floods triggered during the twentieth century. Deposits from flood-generated turbidity currents have a great impact on the interpretation of deep-ocean paleoclimate records obtained near continental margins by linking deep-marine sedimentary records to continental climatic changes through flood frequency and magnitude. Implications of this study should help redefine the reservoir character of oil fields in fine-grained turbidites.
Key Words: Mediterranean • flood-related turbidites • hyperpycnal turbidity currents • sedimentary sequence • coarsening-upward unit
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