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Fig. 10 | Swiss Journal of Geosciences

Fig. 10

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

Fig. 10

a Close-up view of section B′–B′′ (see Fig. 3 for location) showing the Windgällen fold-and-thrust structure. Legend as on Figure 1. Schematic sketches highlight the crosscutting relationships for the three main tectonic foliations S2 to S4 as well as overall changes in their relative spacing at different positions of the structure. b Well-developed sub-horizontal axial foliation cleavage S2 in Middle Jurassic strata (coordinates: \(46.8015^{\circ }\text {N}/8.8267^{\circ }\text {E}\)). c Close-up view of Fig. 5b showing a weakly developed steeper crenulation cleavage (S3) overprinting S0–S2. d Middle Jurassic siliceous limestone with a pronounced S3 crenulation cleavage overprinting the still dominating S0–S2 composite foliation (coordinates: \(46.7982^{\circ }\text {N}/8.7441^{\circ }\text {E}\)). e Basement shear zone in the Windgällen-Färnigen zone. A steep main foliation (S1–S3 composite) is overprinted by discrete top-to-the NNW shear bands (S4) (coordinates: \(46.7191^{\circ }\text {N}/8.4630^{\circ }\text {E}\))

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