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• W1993099928 abstract "We have compared the sedimentological record of the Pleistocene coastal deposits in southeastern Tunisia with the climatic data obtained on two deep-sea cores recovered in the Mediterranean Sea. Coastal marine deposits are composed of two distinct lithostratigraphic units separated by an erosion surface. The radiochemical dating shows that these two units were developed during the unique marine isotopic substage 5e (the Last Interglacial). The lower unit mainly consists of quartz-rich sands whereas the upper one consists of carbonate deposits. This petrographic contrast indicates that the palaeoclimatic evolution in the southeastern coast of Tunisia was identical to that observed in the western Mediterranean Sea and the surrounding continents. In particular, the establishment of humid conditions at the beginning of the Last Interglacial was responsible for a supply of terrigenous material and siliciclastic sedimentation along the coastal area of southeastern Tunisia, whereas the regression of these wet conditions during the second half of the Last Interglacial favoured carbonate sedimentation. Nous avons comparé l'enregistrement sédimentaire des dépôts littoraux pléistocènes du Sud-Est tunisien avec les données climatiques obtenues à partir de deux carottes profondes recueillies en mer Méditerranée. Les dépôts marins littoraux sont constitués de deux unités lithostratigraphiques séparées par une surface d'érosion. Les datations radiochimiques montrent que ces deux unités se sont déposées au cours du seul sous-stade isotopique marin 5e (le dernier Interglaciaire). L'unité basale est principalement quartzeuse, alors que l'unité sommitale est à dominante carbonatée. Ce contraste pétrographique révèle que l'évolution paléoclimatique du Sud-Est tunisien au cours du dernier Interglaciaire présente une similitude frappante avec celle de la Méditerranée occidentale. La prédominance de grains de quartz dans l'unité basale, correspondant au début du dernier Interglaciaire, indique des apports terrigènes importants vers la côte et reflète des conditions climatiques nettement plus humides que celles d'aujourd'hui. La régression de ces conditions vers la deuxième moitié du dernier Interglaciaire avait privilégié une sédimentation à dominante carbonatée." @default.
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• W1993099928 date "2001-12-01" @default.
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• W1993099928 title "Variabilité climatique rapide lors du dernier Interglaciaire (stade isotopique marin 5e), enregistrée dans les sédiments littoraux du Sud-Est tunisien" @default.
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• W1993099928 doi "https://doi.org/10.1016/s1251-8050(01)01681-0" @default.
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