Figure 64

Experimentally deformed quartzo-feldspathic rocks

Figure caption

Experimentally deformed quartzo- feldspathic rocks

starting material & regime1 / regime 2 / annealing & melting

64

EA shortened 60% at 800°C, 10-6/sec, and 1200 MPa; quartz regime 2 dislocation creep, feldspars semi-brittle flow (compare with 65).

EA shortened 60% at 800°C, 10-6/sec, 1200 MPa. At these conditions quartz deforms by regime 2 dislocation creep and the feldspar deformation is transitional from semi-brittle flow to regime 1 dislocation creep. Quartz grains (mostly white) are flattened, and the feldspar grains (darker) are less homogeneously deformed, with deformation bands and boudinage. Compare with annealed equivalent in photo 65. (W316)

		Experimentally deformed quartzo-feldspathic rocks
		Figure caption

	Experimentally deformed quartzo- feldspathic rocks	starting material & regime1 / regime 2 / annealing & melting


64		EA shortened 60% at 800°C, 10-6/sec, and 1200 MPa; quartz regime 2 dislocation creep, feldspars semi-brittle flow (compare with 65). EA shortened 60% at 800°C, 10-6/sec, 1200 MPa. At these conditions quartz deforms by regime 2 dislocation creep and the feldspar deformation is transitional from semi-brittle flow to regime 1 dislocation creep. Quartz grains (mostly white) are flattened, and the feldspar grains (darker) are less homogeneously deformed, with deformation bands and boudinage. Compare with annealed equivalent in photo 65. (W316)