Fig. 2From: The Muschelkalk aquifer of the Molasse basin in SW-Germany: implications on the origin and development of highly saline lithium-rich brines in calcareous hydrothermal reservoirsHydraulic potential (groundwater contour lines) of the Upper Muschelkalk aquifer (red lines) and total of dissolved solids (TDS, g kg−1) in the thermal water (blue lines). ‘Red arrows’ indicate flow directionBack to article page