Fig. 16

Delta and lake sediments of Lake Ilanz. A Digital elevation model of Planezzas Sura. Gullies end downward at the foot of the slope suggesting that incision ceased once the lake level, resp. the delta at Planezzas was reached. B Delta sediments shed into Lake Ilanz at Planezzas east of Val da Mulin. The sediments (white arrows) overly rock avalanche deposits and are about 50 m thick. C Delta sediments shed into Lake Ilanz at Sagogn west of Val da Mulin. The sediments are stratified with a layer of boulder-sized clasts on the right. D Lake sediments (white arrow) at Ruinas da Starviz south of Sagogn in a cliff bordering the Vorderrhein (coord. 2739420/1183620). The sequence is stratified and includes fine-grained layers. Photos A. Pfiffner