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L'examen de la repartition des richesses en carbone organique total et des caracteristiques geochimiques de la matiere organique des facies paleozoiques sedimentes dans les differents secteurs du bassin de Qasbat-Tadla permet de mettre en relief la succession de plusieurs evenements anoxiques. Ces crises, incluses dans l'echelle des evenements anoxiques mondiaux, temoignent de l'installation, au cours...
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