Fig. 1
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Simplified geological map of the Saar-Lorraine Basin showing the location of Folschviller (Fols 1A) and Diebling (Dbl S1) boreholes. The Carboniferous Basin is accessed by both boreholes at depths of 700 and 600 meters, respectively. Permian and Carboniferous outcrop in Germany. Modified after Pruvost (1934), Donsimoni (1981), Schäfer (2011) and Izart et al. (2016).
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