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Des charbons de bois, temoins d'anciens feux, ont ete decouverts dans des dolines de la partie asylvatique ou deforestee des Grands Causses submediterraneens. Les premieres datations AMS 14 C ont ete effectuees sur des charbons de Pinus cf. sylvestris ; elles couvrent la periode 4805-2990 BP. Ceci est la preuve du developpement de forets de pins a la transition Holocene moyen-Holocene...