Fig. 2

Geological (lithostratigraphic) map produced during this study. The inset (tectonic units) helps relate the lithostratigraphy to the tectonic units within the map. The scale of the field map was 1:10’000. Quaternary deposits were explicitly not mapped. The orientation of the Crena Martin Fold (CMF; trend/plunge) is inferred from this map and not directly measured in the field. Thin lines correspond to cross-sections through the final 3D structural model (Fig. 8). The approximate locations and view directions of field photographs are indicated for Fig. 3 as well as for Fig. 6a–f (labelled a–f). Background topographic map from the Federal Office of Topography (swisstopo); coordinates in km in Swiss coordinate system CH1903/LV03. The full geological map with all structural data and all additional data can be found as an ArcGIS project in the supplementary online material of this article