A new upper Bedoulian section in the Aptian stratotypic area: Croagnes (5 km NW of Gargas, Vaucluse, SE France)

Michel MOULLADE, Guy TRONCHETTI, Christine BALME, Pascal MAUROUX
2012 Carnets de Géologie  
The discovery and exploitation of a new outcrop of the "A 1 Unit of yellow marls and marly limestones" of LEENHARDT (1883), comprised between the Urgonian limestones and the "Aptian marls" of the authors, leads to question the generalized attribution of this formation to the Deshayesites grandis ammonite Subzone. Data from this section at Croagnes rather lead to place A 1 , at least locally in the stratotypic area of the surroundings of Apt, at the level of the onset of the anoxic event OAE1a,
more » ... noxic event OAE1a, just below the Roloboceras hambrovi Subzone. The assumed isochroneity of this Unit is also questioned.
doi:10.4267/2042/47550 fatcat:weax6mglh5gtrnffdxf2nrg764