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Swiss Journal of Geosciences
Fig. 2 | Swiss Journal of Geosciences

Fig. 2

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

Fig. 2

a Tectonic map with the main units of the northern Alpine region. BG Bresse Graben, RBTZ Rhine–Bresse Graben transfer zone, URG Upper Rhine Graben. b Large scale tectonic map of the junction between the Jura belt and the Upper Rhine graben. c Simplified geological and tectonic map of St-Ursanne (modified after Laubscher 1963). Keuper and Liassic sediments outcrop in the core of the Mont Terri anticline. Note the small rhomb-shaped syncline in the south-western prolongation of the Mont Terri anticline. Its presence may explain the different fault systems identified in the Mont Terri rock laboratory

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