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Swiss Journal of Geosciences
Fig. 7 | Swiss Journal of Geosciences

Fig. 7

From: Analysis of tectonic structures and excavation induced fractures in the Opalinus Clay, Mont Terri underground rock laboratory (Switzerland)

Fig. 7

Small-scale mapping of the Main Fault intersected in Gallery 98. For location refer to Fig. 4. The Main Fault is a SSE-dipping fault zone which is more inclined than the bedding planes but dips with the same strike (150°). The angular difference between the fault zone boundaries and the bedding planes is 15° on average. a View of the western sidewall. b View of the eastern sidewall. The inner structure is characterised by C′-type shear bands. c Paleostress analysis indicates NNW-SSE shortening

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