Generalized litho-stratigraphical logs of the three paleogeographic sectors (Carcassonne High, Boutenac-Fontfroide Zone and the Nappe des Corbières Orientales) showing the eastward deepening of the basin (see Fig. 1 for the location of these zones). After Narbonne and Capendu BRGM 1/50 000 geological notes (Lespinasse, 1982; Ellenberger et al., 1987). Both Carcassonne High and Boutenac-Fontfroide Zone belong to the eastern Pyrenean foreland, the NCO belongs to the Corbières-Languedoc Transfer Zone (CLTZ).