Fig. 2

Structural map of the Lepontine Alps after field observations by Preiswerk et al. (1934), Hasler (1949), Kobe (1956), Knup (1958), Hunziker (1966), Wieland (1966), Keller (1968), Bianconi (1971), Keller et al. (1980), Colombi (1989), Burri (2005), Steck (1998, 2008), Berger and Mercolli (2006), Matasci et al. (2011) and unpublished documents by Paul Graeter (^†) and Eduard Wenk (^†) (A high-resolution version of this figure appears as Electronic Supplementary Material with the online version of the article and can be found as a fold-out at the back of the printed issue)