Fig. 3From: Rocks control the chemical composition of surface water from the high Alpine Zermatt area (Swiss Alps)Simplified geological map (after Steck et al. 1999) showing catchment and outcrop lithology in the Zermatt-Saas area. Penninic metasediments are predominantly calcareous micaschists in yellow (Tsaté nappe) and dolomite marble and quartzites in light blue (Cimes Blanche nappe)Back to article page