El Terciario de la unidad de Saaden (

Abstract

In the Saaden unit (External "Limestone Chain", northern Internal Rif), the uppermost Eocene and the Oligocene have been dated by planktonic foraminifera. It confirms that an important transgression accounted during the Upper Eocene in this unit, and allow to demostrate that sedimentation was continuous up tq the Late Oligocene and, also probably, to the Aquitanian