Fig. 2

Five selected geological-tectonic transects across the Western Alps. The sections are superimposed with and partly based on vertical cross sections across the final P-wave velocity model of Diehl et al. (2009) indicated by red dashed lines. The Moho (blue line) is taken from a combination of controlled source seismology, local earthquake tomography and receiver function analysis (Wagner et al. 2012; Spada et al. 2013). See text for data sources and further discussion and Fig. 1 for the traces of the profiles. a Argentera transect; b Pelvoux transect; c ECORS-CROP transect; d NFP 20-West transect; e Ticino transect