Fig. 6

Structures in the Gruf complex. a Foliation discordance, weakly foliated gneiss crosscut by more strongly foliated gneiss (arrow), formed before a crosscutting leucocratic vein (upper Val Schiesone, 755′555/127′770); b ductile shear zone (dashed line, arrows = sense of shear) in the migmatitic biotite-orthogneiss (upper Val Aurosina, 758′314/128′576); c internally boudinaged charnockite with few cm-thick, anastomosing mylonitic zones at the contact (bold dashed line) with biotite-orthogneiss and between charnockitic boudins (thin dashed lines, upper Val Casnaggina, 762′644/130′526); d up to 50 cm thick mylonite of the sheared contact between charnockite and migmatitic biotite-orthogneiss (below field of view; upper Valle dei Vanni, 762′885/130′228); e folds within partly migmatitic paragneiss and micaschist (upper Val Aurosina, 758′049/129′817)