Page 44 - Microtectonics

32 3 · Deformation Mechanisms

Fig. 3.9. Subhedral quartz crystal in an undeformed ignimbrite. Ornica, Southern Alps, Italy. Width of view 4 mm. CPL

Fig. 3.10. Quartz crystal flattened by intracrystalline deformation in a deformed ignimbrite. The crystal is boudinaged and the fragment on
the right hand side shows deformation lamellae and undulose extinction. Argylla Formation, Mount Isa, Australia. Width of view 4 mm. CPL