• From bottom to top, the succession starts with two levels (#1 and #2) composed of massive hard dark brown silts containing scarce carbonate nodules; these beds are only exposed for a short distance on the right margin of the river downstream of the cascade and are partially covered by a tufa crust. The succession continues with a conglomeratic lens composed of sabulitic gravels of carbonate and coarse sands (level #3) that cuts into the roof of level #2 and is covered by a discontinuous calcrete layer (level #4). Overlying, and sometimes in contact with the conglomerate lens or with the calcrete layer, is a widespread reddish-brown silt with paleosol evidence and carbonate veins (level #5). The “Irenean” succession ends with a mostly carbonatic level #6 characterized by a “honeycomb” weathering profile, deposits of diamicton toward the upper section and large (>1m in diameter) crotovines filled with fine sediments. Upstream of the cascade, on the right margin and lateral to level #3, in scattered patch outcrops, there are reddish-brown silts with desiccation cracks and crotovines completely filled by carbonate