Preusser Frank, Graf Hans Rudolf, Keller Oskar, Krayss Edgar, Schlüchter Christian (2011) :
Quaternary glaciation history of northern Switzerland. E&G Quaternary Science Journal 60/2-3, 282-305
p.300: Most pronounced is the incision after deposition of ‘Tiefere Deckenschotter’ (Fig. 18). Besides tectonic processes, this may have been caused by the redirection of the Alpine Rhine that was tributary to the River Danube during most of the Early Pleistocene (cf. Preusser 2008; Keller 2009). The connection of the Alpine Rhine, flowing at a level of about 700 m a.s.l., to the base level in the southern part of the Upper Rhine Graben, being at ca. 250 m a.s.l., must have caused substantial fluvial incision along the Hochrhein and its tributaries (systems of the Rivers Aare, Reuss, and Limmat). This complex change of drainage and relief is currently not directly dated, but we refer to it as Middle Pleistocene Reorganisation (MPR).
