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Swiss Journal of Geosciences
Fig. 9 | Swiss Journal of Geosciences

Fig. 9

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

Fig. 9

a Tens of metres-scale isoclinal D4 folds in dolomite. b S3 is marked by Wm and Gr and occurs as relic fold hinges, whereas S4 is the main planar structure (plane-polarized light). c A well-developed lineation (L4), defined by calcite aggregate and plunging to the southeast in a marble of the Upper Unit. d Dolomite clasts in Jurassic meta-sediments indicate a top-to-northwest transport. e Centimetre- to metre-scale D4 folds in calcschist. f Chl partially replaced sodic Amp (plane-polarized light). g Differentiated crenulation cleavage in Arolla mylonitic gneiss: S5 is defined by cleavage domains and microlithons and is marked by Wm and Chl. h C’-type shear bands in Arolla gneiss (plane-polarized light). i Tension gashes in a dolomite. j Fractures filled by Qz in a qz-micaschist (plane-polarized light). Field photos are located in Online Resource 1 (Table F)

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