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Keywords from Image Description:
Gemonval coupe gologique. fr Coupe gologique de Gemonval ABC couche de houille AB partie gypseuse BC houille tendre EE gypses marneux et salifres diversement colors dont l'paisseur est d'au moins mtres FF terrains graveleux mlang de marnes diversement colors sans consistance rsidu de la dissolution des couches gypseuses par