Fig. 21From: Tectonics of the Monte Rosa and surrounding nappes (Switzerland and Italy): Tertiary phases of subduction, thrusting and folding in the Pennine AlpsSame locality as Figs. 18 and 19. Amphibolite of the Antrona zone on the northern border of the Monte Rosa gneiss. Boudinage of a competent plagioclase rich layer with quartz and chlorite growth in a clock-wise rotated extensional joint and drag folds demonstrate the continuation of dextral shear under retrograde greenschist facies conditions during DIV deformationBack to article page