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Fig. 5 | Geothermal Energy

Fig. 5

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. 5

Zoomed backscattered scanning electron microscope images showing the microstructure (the pore and grain size in particular) 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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