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Fig. 4 | Geothermal Energy

Fig. 4

From: Petrophysical properties of the Muschelkalk from the Soultz-sous-Forêts geothermal site (France), an important lithostratigraphic unit for geothermal exploitation in the Upper Rhine Graben

Fig. 4

Backscattered scanning electron microscope images showing the microstructure of the six Muschelkalk samples chosen to represent the variability of the Muschelkalk at exploration well EPS-1 (Soultz-sous-Forêts) (af), and three samples from the Buntsandstein at the Muschelkalk–Buntsandstein interface (gi). The lithological unit, box number, and measured depth are given next to each image

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