Influence de la tectonique du Pays de Bray sur les formations paleogenes au voisinage de sa terminaison orientale

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Abstract
Major facies changes in the Paleogene formations at the southeast end of the Pays de Bray anticline of the Paris basin, in the vicinity of Beaumont-sur-Oise, date tectonic movements and periods of remission during the Paleogene. Although the anticline developed during the late Cretaceous, it seems to have had no significant effect upon sedimentation until its emergence and the concurrent establishment of continental sedimentation in the upper Thanetian (lower Eocene). Tectonic activity occurred again in the lower Sparnacian and the upper Cuisian (lower Eocene), the lower and the upper Lutetian (middle Eocene), the Ledian (lower Priabonian: upper Eocene), the Ludian (upper Priabonian: upper Eocene), and the lower Stampian (middle Oligocene).

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