Fig. 15From: Record of a dense succession of drowning phases in the Alpstein mountains, north-eastern Switzerland: part I—the Lower Cretaceous Tierwis Formation (latest Hauterivian to latest Barremian)Photographs of the south-eastern mountain range. A View on the Hüser cliff from Frümsner Alp with the stratigraphical position of the Chopf Bed, the Drusberg Member and the Schrattenkalk Formation. B Focus on the bioturbated firmground (D12) at the base of the Chopf Bed with its glauconitic infill, Frümsner Alp. C Focus on the overlaying Chopf Bed at Alp WisBack to article page