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Fig. 13 | Swiss Journal of Geosciences

Fig. 13

From: Structural and thermal evolution of the eastern Aar Massif: insights from structural field work and Raman thermometry

Fig. 13

a Photograph of the Tödi zone. The tectonic contact in the north (Tödi normal fault, red line with arrow indicates Mesozoic extension). South of the synclinal area, a strongly foliated mylonitic basement shear zone with S-up kinematics (green arrow) can be traced into the vertical to overturned stratigraphic basement-cover contact. The approximate thickness of the Röti Formation (yellow dolomitic horizon) is 50 m. White arrows indicate the younging direction in Mesozoic strata. See Figs. 3a and 12 for location. b Mylonitic basement shear zone with S-up kinematics near the overturned stratigraphic basement cover contact (coordinates: \(46.7953^{\circ }\text {N}/8.8974^{\circ }\text {E}\), see Fig. 12 for location). c Gneiss breccia near the Tödi normal fault. Clasts internally preserve pre-Alpine textures (coordinates: \(46.7967^{\circ }\text {N}/8.8988^{\circ }\text {E}\), see Fig. 12 for location)

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