Naturally deformed quartz-rich rocks

 

Subgrain rotation recrystallization

Naturally deformed quartz-rich rocks

 

undeformed / semibrittle & bulging recrystallization / subgrain rotation recrystallization / grain boundary migration recrystallization

 

List of microstructures

 

 

 

 

18

 

Mica-rich Heavitree quartzite deformed at greenschist conditions by simultaneous subgrain rotation recrystallization and solution-reprecipitation

19

 

Mica-poor Heavitree quartzite deformed at greenschist conditions by subgrain rotation recrystallization.

20

 

Detail of mica-poor Heavitree quartzite, showing recrystallization by progressive subgrain misorientation.