Figure 34

Experimentally deformed feldspar aggregates

Figure caption

Experimentally deformed feldspar aggregates

Starting material / cataclastic flow / regime 1

34

TA shortened 34% at 300°C, 10-5/sec, and 800 MPa; macroscopically ductile cataclastic flow.

TA shortened 34% at 300°C, 10-5/sec, 800 MPa. The deformation of this sample is macroscopically ductile although microscopically brittle, because there has been no dislocation activity or even mechanical twinning (determined by TEM observations). Cracking remained distributed, instead of coalescing into a through-going fault, and the sample underwent close to steady state flow. We have termed this 'cataclastic flow'. Most grains show multiple grain-scale faulting, most commonly on one or both cleavage planes. (W528)

		Experimentally deformed feldspar aggregates
		Figure caption

	Experimentally deformed feldspar aggregates	Starting material / cataclastic flow / regime 1


34		TA shortened 34% at 300°C, 10-5/sec, and 800 MPa; macroscopically ductile cataclastic flow. TA shortened 34% at 300°C, 10-5/sec, 800 MPa. The deformation of this sample is macroscopically ductile although microscopically brittle, because there has been no dislocation activity or even mechanical twinning (determined by TEM observations). Cracking remained distributed, instead of coalescing into a through-going fault, and the sample underwent close to steady state flow. We have termed this 'cataclastic flow'. Most grains show multiple grain-scale faulting, most commonly on one or both cleavage planes. (W528)