Fig. 20

Schematic palinspastic profiles of the development of Bündnerschiefer and Flysch in the North Penninic/Valais section of the Prättigau half-window (not to scale). Drift stage according to Steinmann (1994). The flysch stage follows the basin conversion and is still active in the Tomül nappe depositional area. The Grava nappe area was probably tectonically buried such that no flysch could be deposited there. Unit abbreviations: AA, Austroalpine; H, Helvetic; NP/V, North Penninic/Valais; MP, Middle Penninic; SP, South Penninic; UH, Ultrahelvetic; LOA, Lower Australpine