Page 48 - Microtectonics

36 3 · Deformation Mechanisms

Fig. 3.17. Undulose extinction in quartz. Grain boundaries are irregular due to grain boundary migration. The grain at lower left has defor-
mation lamellae. Micaschist, Orobic Alps. Width of view 0.6 mm. CPL

Fig. 3.18. Deformation lamellae in quartz (oblique). Vertical planes are trails of fluid inclusions. Mt Isa, Australia. Width of view 1.8 mm. CPL