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Fig. 10 | Swiss Journal of Geosciences

Fig. 10

From: Pore-water evolution and solute-transport mechanisms in Opalinus Clay at Mont Terri and Mont Russelin (Canton Jura, Switzerland)

Fig. 10

Results of model calculations considering diffusive exchange of Cl− between the Malm aquifer (upper boundary condition) and the underlying low-permeability sequence. The scenario considers a Cl− concentration of 70 g/L at the upper boundary for the duration of the hypersaline period. Stratigraphic profile according to Freivogel and Huggenberger (2003). a Modelled final Cl− concentrations in the late Miocene (6 Ma), considering different durations for the hypersaline upper boundary condition in the early Miocene. Numbers indicate the durations for this condition in Myr. b Evolution of Cl− concentrations for a model considering a hypersaline stage lasting 8.5 Myr. Numbers indicate evolution times in Ma since the onset of the Tertiary (66 Ma). Broken blue lines represent the Palaeogene evolution, solid red lines refer to the Neogene

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