Page 58 - Microtectonics

46 3 · Deformation Mechanisms

Fig. 3.29. Relicts of folded old quartz grains, nearly completely replaced by new grains during bulging (BLG) recrystallisation. The section is
taken normal to the aggregate lineation in a quartzite mylonite with a dominantly linear shape fabric. Aston Massif, Pyrenees, France. Width
of view 1.4 mm. CPL

Fig. 3.30. Polycrystalline quartz aggregate, probably developed predominantly by subgrain rotation (SGR) recrystallisation. Transitions exist
between grains surrounded by high angle boundaries and subgrains. A relict of a deformed old quartz grain occurs at upper left. St. Barthélemy,
Pyrenees, France. Width of view 1.8 mm. CPL