Series stratigraphiques et paleogeographie du Cretace superieur dans la region de Lourdes

Abstract

Abstract Stratigraphic and paleogeographic data indicate that a zone of the northern Pyrenees was extensively covered by flysch deposits during the upper Cretaceous. The region north of Lourdes has been placed in the Cenomanian-Turonian on the basis of microfauna, and the area to the south is considered Senonian. The two areas were internally folded and although separated by an intermediate cordillera were part of an orogenic unit whose history of subsidence, anticlinal folding, emergence and destruction of cordilleras was associated with the tectonic evolution of the regional geosyncline.