Page 155 - Microtectonics

144 5 · Shear Zones

Fig. 5.30. Mica fish of group 3 in a quartzite mylonite. Note stair stepping. Quartz in the matrix is dynamically recrystallised and developed
an oblique foliation. Dextral shear sense. Minas Gerais, Brazil. Width of view 4 mm. CPL

Fig. 5.31. Mica fish of group 5 as shown schematically in Fig. 5.28a from quartzite mylonite. Note stair-stepping of wings of mica fragments.
Quartz in the matrix is dynamically recrystallised and developed an oblique foliation. Dextral shear sense. Minas Gerais, Brazil. Width of
view 4 mm. CPL