Figure 92

Experimentally deformed pyroxenite and diabase

Figure caption

Experimentally deformed pyroxenite and diabase

examples

92

MD shortened 50% at 1000°C, 10-4/sec and 1200 MPa; pyroxene is stronger and forms augen.

MD shortened 50% at 1000°C, 10-4/sec, and 1200 MPa (roughly equivalent to 800°C and 10-6/sec, for comparison to experimentally deformed samples of pure feldspar aggregates and quartzo-feldspathic rocks). At these conditions the pyroxene is the stronger phase and remains as relatively undeformed augen, and the plagioclase has undergone semi-brittle flow, including grain-scale faulting, which has allowed the laths to become strongly aligned. Thus at the same experimental deformation conditions, feldspar is the stronger phase in granite but the weaker phase in diabase. (W269)

		Experimentally deformed pyroxenite and diabase
		Figure caption

	Experimentally deformed pyroxenite and diabase	examples


92		MD shortened 50% at 1000°C, 10-4/sec and 1200 MPa; pyroxene is stronger and forms augen. MD shortened 50% at 1000°C, 10-4/sec, and 1200 MPa (roughly equivalent to 800°C and 10-6/sec, for comparison to experimentally deformed samples of pure feldspar aggregates and quartzo-feldspathic rocks). At these conditions the pyroxene is the stronger phase and remains as relatively undeformed augen, and the plagioclase has undergone semi-brittle flow, including grain-scale faulting, which has allowed the laths to become strongly aligned. Thus at the same experimental deformation conditions, feldspar is the stronger phase in granite but the weaker phase in diabase. (W269)