Héritage structural et déformation de couverture : plissement et fracturation tertiaires dans l'Ouest du bassin de Paris

Abstract

Abstract The analysis of recently recognized brittle and fold structures in the Tertiary formations of the western Paris Basin provides new evidence that this basin, usually considered as stable, recorded the Cenozoic polyphase tectonic history of Western Europe. These folds and the associated faults probably formed above basement features of Hercynian age reactivated as compressive wrench faults during the Eocene north–south to N020° Pyrenean compression, especially the ‘Avre–Eure–Seine–Oise’ lineament. The Oligocene extension and the Alpine compression have also been recorded by brittle microstructures.