Table 1 Major component characteristics of water in geological units of the Sedrun section (based on % meq L−1)
Unit | Prime | Prime | Secondary | Secondary | Major |
|---|---|---|---|---|---|
Cation | Anion | Cation | Anion | Unita | |
S-granite-gneiss | Ca | SO4 | Na | F/Cl | Aar Massif |
Clavaniev zone | Na | SO4 | Ca | HCO3/CO3 | cover |
TZM north | Na | SO4 | – | HCO3/CO3 | Tavetsch Massif |
TZM south | Na | HCO3/CO3 | – | Cl/SO4 | Tavetsch Massif |
Urseren-Garvera zone | Ca,Mg | HCO3/CO3 | – | SO4 | cover |
Paragneiss | Na | HCO3/CO3 | – | F/Cl/SO4 | Gotthard Massif |
Streifen gneiss north | Na | HCO3/CO3 | Ca | F/Cl/SO4 | Gotthard Massif |
Paradise gneiss | Na | HCO3/CO3 | Ca | F/Cl/SO4 | Gotthard Massif |
Streifen gneiss south | Na | HCO3/CO3 | Ca | F/SO4 | Gotthard Massif |
Piz Fuorcla zone | Na | HCO3/CO3 | – | F/SO4 | Gotthard Massif |
Streifen gneiss s.s | Na | HCO3/CO3 | Ca | F/SO4 | Gotthard Massif |