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Fig. 8 | Geothermal Energy

Fig. 8

From: Detailed descriptions of the lower-middle Triassic and Permian formations using cores and gamma-rays from the EPS-1 exploration geothermal borehole (Soultz-sous-Forêts, Upper Rhine Graben, France)

Fig. 8

Focus on the cores from the upper part of the Couches de Trifels (Grès Vosgien inférieur), in conjunction with the gamma-ray log. Boxes 364, 384 and 392, Couches de Trifels: medium-grained sandstones showing white quartz rounded pebbles, mud clasts and three thick silty and micaceous clay beds and cross-bed laminations. The GR peaks located at 1255, 1273 and 1281 m are associated with the schematic log and cores, respectively number 1, 2 and 3

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