Fig. 11From: Analysis of tectonic structures and excavation induced fractures in the Opalinus Clay, Mont Terri underground rock laboratory (Switzerland)Geometric relationships between a pre-existing fault and fractures induced by the excavation phase. The thrust fault limits the sub-vertical extensional EDZ fractures upwards. During the excavation phase, the thrust plane was reactivated as a normal fault (Photo: © Comet Photoshopping GmbH, Zürich)Back to article page