Fig. 5

Geographical extent of five major aquifers in the Swiss Molasse Basin and adjacent Jura at depths >800 m. All the aquifers are sealed by low-permeability caprock >20 m thick. Black contours vertical thicknesses (m). Colours: variation in thickness within each aquifer between minimum (red) and maximum (green). Thicknesses can be compared between aquifers; colours cannot be compared. Grey portions of aquifers deeper than 2500 m (thickness not contoured)