Fig. 3From: Analysis of overdeepened valleys using the digital elevation model of the bedrock surface of Northern SwitzerlandOverdeepened structures in northern Switzerland revealed by analysis of the present bedrock surface DEM. Three approaches are shown: (1) areas below 300 m a.s.l. (Wildi 1984 criterion, blue and green); (2) areas with more than 80 m unconsolidated rock cover (yellow and green); (3) undrained basins (framed by red dots and filled red if no other colour applies). See schematic cross-section top left for additional explanation concerning the colouring conceptBack to article page