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Swiss Journal of Geosciences
Fig. 11 | Swiss Journal of Geosciences

Fig. 11

From: Geology along the Bedretto tunnel: kinematic and geochronological constraints on the evolution of the Gotthard Massif (Central Alps)

Fig. 11

Field photographs and photomicrographs of the QB-SZ between TM 2800 and TM 2805 (a–e) and at TM 3147 (f). a White frame indicates the close-up shown in (b). b Close-up of the SE-contact. Shear sense is indicated by sigmoidal quartz veins. White frame indicates a further close-up shown in (c). c Rigid calcite crystals (brown) inside deformed quartz (white), pencil tip for scale. d, e Photomicrographs of the QB-SZ between TM 2800 and TM 2805, crossed polarized light. f Photomicrograph of a QB-SZ at TM 3147, crossed polarized light

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