Tres Thoenen and Scott Altmann, during the Porewater Chemistry and the Geochemical Data Experiments. Many thanks also to the Mont Terri team, including Christophe Nussbaum and Paul Bossart (Swisstopo), for their continuous support to the project. We also appreciate the comments of two anonymous referees for the jopurnal ,
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Figure 1 Comparison of potassium/sodium ratios measured in Mont Terri borehole waters (circles and squares) with ratios calculated using thermodynamic data for albite and K-feldspar from various compilations of thermodynamic data (diamonds) 1: value from SUPCRT (from PHREEQC llnl.dat). 2: value from Stefansson and Arnorsson 3: value from THERMODDEM database, value from Coudrain-Ribstein and Gouze Table 2) and Michard, 1983. ,
A3 samples 23% seawater A3-A Nominal constraints A3-B KX ,