ABSTRACT
The studied rock samples belong to the “Monte Canale” tectono-metamorphic unit (Austroalpine Bernina nappe, Central Alps, Italy). This unit consists of strongly deformed granitic to granodioritic gneisses and epidote-amphibole schists and calcschists, representing the original host rocks of intrusive protoliths. The whole unit experienced a greenschist facies metamorphism and severe ductile deformation during the Variscan orogeny, with only minor Alpine metamorphic overprint within low grade shear zones along unit margins (Trommsdorf et al., 2005).
