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Fig. 14 | Swiss Journal of Geosciences

Fig. 14

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

Fig. 14

Shear zone patterns and kinematics in the basement. a Slightly undulating pattern of S3 at the decametre scale (coordinates: \(46.6634^{\circ }\text {N}/8.4895^{\circ }\text {E}\), see Fig. 6 for location). b Major shear zone with S-block up kinematics (coordinates: \(46.6396^{\circ }\text {N}/8.4580^{\circ }\text {E}\), see Fig. 6 for location). c Shearband cleavage (C/S fabric) in weakly deformed granite indicating S-block up kinematics (coordinates: \(46.6213^{\circ }\text {N}/8.4708^{\circ }\text {E}\), see Fig. 6 for location). d Mylonite with feldspar porphyroclasts in a granite (coordinates: \(46.6231^{\circ }\text {N}/8.4611^{\circ }\text {E}\), see Fig. 6 for location). e C’-type shear bands in the core of a phyllonitic shear zone indicating S-block up kinematics (coordinates: \(46.6888^{\circ }\text {N}/8.5307^{\circ }\text {E}\), see Fig. 6 for location). f S3 intersecting the contact between a felsic dike and a migmatite with well-preserved pre-Alpine foliation (coordinates: \(46.7118^{\circ }\text {N}/8.5174^{\circ }\text {E}\), see Fig. 6 for location). g D4 shear zone overprinting S3. Deflection of S3 indicates a dextral component of deformation. Stretching lineations associated with the outcrop indicate oblique dextral S-block up kinematics (coordinates: \(46.7124^{\circ }\text {N}/8.5172^{\circ }\text {E}\), see Fig. 6 for location)

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