Figure 59

Experimentally deformed quartzo-feldspathic rocks

Figure caption

Experimentally deformed quartzo- feldspathic rocks

starting material & regime1 / regime 2 / annealing & melting

59

EA shortened 85% at 900°C, 10-6/sec, and 1200 MPa; recrystallized ribbons of quartz, feldspar augen with tails.

EA shortened 85% at 900°C, 10-6/sec, 1200 MPa. This photo shows a sample deformed at the same conditions as photos #57 and 58 but to even higher strain. The remnants of feldspar grains (mostly darker grey) now appear as somewhat rounded augen with thin dark tails of very fine recrystallized grains formed by grain boundary bulging . The quartz grains (lighter grey and white) include flattened ribbons plus thin regions of coarser recrystallized grains formed by progressive subgrain rotation. (W323)

		Experimentally deformed quartzo-feldspathic rocks
		Figure caption

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


59		EA shortened 85% at 900°C, 10-6/sec, and 1200 MPa; recrystallized ribbons of quartz, feldspar augen with tails. EA shortened 85% at 900°C, 10-6/sec, 1200 MPa. This photo shows a sample deformed at the same conditions as photos #57 and 58 but to even higher strain. The remnants of feldspar grains (mostly darker grey) now appear as somewhat rounded augen with thin dark tails of very fine recrystallized grains formed by grain boundary bulging . The quartz grains (lighter grey and white) include flattened ribbons plus thin regions of coarser recrystallized grains formed by progressive subgrain rotation. (W323)