Fig. 6

Sub-surface cross section based on tunnel and borehole data collected within and in the vicinity of the Mont Terri rock laboratory. The main tectonic structure intersecting the rock laboratory is the 1–6 m wide “Main Fault’’ and is described in Nussbaum et al. (2011) and Jaeggi et al. (2017). The significance of the fault for this study is that it is considered as being detached from the upper detachment at the top of the Staffelegg Formation. Surface data are taken from GeoCover (Swisstopo 2012)