Fig. 4From: Assessment of deep geothermal research and development in the Upper Rhine GrabenPaleogeographic situation in the URG region (modified after Boigk and Schöneich 1974). Reconstructed sediment thickness after deposition for A the Permo-Carboniferous, B the Upper Permian (Zechstein), C the Lower Triassic (Buntsandstein), D the Middle Triassic (Muschelkalk), E the Upper Triassic (Keuper) and F the Lower Jurassic (Lias)Back to article page