Deformación neotectónica relacionada con anticlinales de núcleo salino (NE de la cuenca del Ebro, Barcelona)

Abstract

Interest on areas of low seismicity but with neotectonic deformation has increased related to the existence of catastrophic earthquakes in areas far away of the active plate margins. In the Ebro basin neotectonic deformation linked to salt cored anticlines has been known for many years but its relation to an active tectonic regime or to the halokinetic movement of salt remains still obscure. The neotectonic deformation described here evidences compressive and extensional processes in distinct areas along the folds. Compressive structures are located in the eastern area and have been related to the growth of the folds whereas extensional structures gather in the western area and are interpreted as an initiation of their collapse. Therefore, the described deformation is related to the evolution of the salt cored anticlines and not to a regional deformation