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Swiss Journal of Geosciences
Fig. 12 | Swiss Journal of Geosciences

Fig. 12

From: Geometry and kinematics of the Roisan-Cignana Shear Zone, and the orogenic evolution of the Dent Blanche Tectonic System (Western Alps)

Fig. 12

Simplified 3-D model of the structural relations arising from ductile deformation stages D3, D4 and D5, in and around the RCSZ. The large scale fold visible in the Becca di Roisan-Rachaud area (nice panorama from Gignod village on the right side of the Buthier valley) is the result of stage 5. As suggested by kinematic markers (i.e. shear bands and dolomite clasts in Jurassic sediments), a consistent top-to-NW sense of transport characterizes the composite S3–S4 foliation in the the RCSZ. The shearing, the folding and the associated transposition of the Roisan Zone are the result of stage 4

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