Les paléokarsts et les formations ferrugineuses associées dans le Bassin Parisien et ses bordures : caractérisations et évolutions géomorphologiques

TL;DRAbstract

That's on the board of the Parisian Basin and its surrounding, and more particularly on theJurassic as well as the cretaceous subterrane, we can find some paleokarsts fossilized.More of 60 underground or aerial sites have been studied in the South of the Ardenne,from the Thiérache ardennaise to the Pays-Haut ; on the contact of the Jurassic-Cretaceous to the limits of the Lorraine and the Champagne (Vallage, Barrois and Haut-Pays) ; to the North of the Massif Central, from the Champagne berrichonne to theMontmorillonnais ; on the chalky trays of Normandy (Pays d?Ouche, Plaine de Saint-André) ; at the hinge between bressan and rhenan Graben (fossé de la petite Saône,Plateaux de Vesoul, Collines pré-jurassiennes).Analyses made on 250 samples (macroscopic and microscopic analysis, granulometryand morphoscopy, mineralogical and chemical analyses), have shown that these ironcementation present facies extremely varied on both structure and size. These facies canresult, either in a dominant m

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