Grain size reduction of quartz due to dynamic recrystallization during mylonitization: an example from the Teshima shear zone, Setonaikai, Japan.

Michibayashi, K., Togami, S., Takano, M., Kumazawa, M. and Kageyama, T. 1999. Tectonophysics , 310, 55-67.
Michibayashi, K. and Murakami, M. in preparation.

Width of base: 3 mm.
Quartz microstructure within the protolith granite.
(15 cm away from the shear zone)

Width of base: 3 mm.
Weakly deformed quartz grains at the margin of the shear zone.
(2 cm from the centre of the shear zone)

Width of base: 3 mm.
Weakly deformed quartz grains within the shear zone.
(1.5 cm from the centre of the shear zone)

Width of base: 3 mm.
Moderately deformed quartz grains within the shear zone.
(1 cm from the centre of the shear zone)

Width of base: 3 mm.
Intensely deformed quartz grains within the shear zone.
(0.5 cm from the centre of the shear zone)

Width of base: 3 mm.
Intensely deformed quartz grains within the shear zone.
(ca. the centre of the shear zone)