Fig. 4

Isopach map of the Schinznach Formation in N Switzerland, SE France and SW Germany. Where many borehole data are available (Basel Tabular Jura), they show a highly variable thickness of the Schinznach Formation. This variation is interpreted to result from drilling of inclined strata that were tilted during the formation of the Upper Rhinegraben. Therefore thick outliers were not considered. Data from following sources were used for constructing the isopach map: Albert et al. (2012), Arbeitsgruppe Geothermik (1988), Bausch and Schober (1997), Brändlin (1911), Brüderlin (1971), Büchi et al. (1965), Bühl and Bollinger (1999), Diebold et al. (2006), Disler (1914), ARGE Geothermie Espace Bern (2010), Fischer and Luterbacher (1963), Fröhlicher and Kehrer (1968), Groschopf et al. (1996), Gsell (1968), Häring (1997, 2002), Hauber (1991), Heidbach and Reinecker (2013), Herb (1957), Herold (1992), Hofmann (1981), Im-Thurn (1840), Kämpfe (1984), Ladner et al. (2008), Ledermann (1981), Merki (1961), Müller et al. (2002), Naef (2008), Nagra (1984), (1985), (1988), (1989), (1990), (1991), (1992a), b, (2001), NEFF (1980), Ryf (1984), Schalch (1893), Schmassmann (1977), Schmidt et al. (1924), Schreiner (1992), Vollmayr (1971), Zaugg et al. (2008), Vonderschmitt (1942), unpublished data from Schweizer Salinen AG, unpublished geodata from Canton Basel-Landschaft (kantonales Bohrkataster); unpublished reports from P.R.E.P.A. (Societé de prospection et exploitations pétrolières en Alsace; boreholes Blodelsheim HN1, Illfurth R1, Hartmannswiller, Knoeringue, Schweighouse, Wittenheim)