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Dans le djebel Bou Kornine d’Hammam Lif (Tunisie septentrionale), le passage du Lias au Dogger s’effectue au sein d’une épaisse formation carbonatée (environ 150m), la formation Kef El Orma. Son âge Toarcien supérieur, zone à Aalensis, à Bajocien inférieur, zone à Propinquans, a pu être bien établi par les ammonites. Quatre assises conglomératiques successives sont repérées pour la première fois dans...
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