Table T1. Summary of grain-size statistics calculated from EBSD data. (See table notes.)
Phase | Mean (µm) |
Standard deviation (µm) |
Median (µm) |
---|---|---|---|
Center of shear zone: | |||
Plagioclase | 45.5 | 35.7 | 34.2 |
Enstatite | 33.3 | 28.1 | 22.5 |
Diopside | 43.9 | 40.7 | 34.4 |
Ilmenite | 18.4 | 6.1 | 16.2 |
Edge of shear zone: | |||
Plagioclase | 26.7 | 24.2 | 20.3 |
Enstatite | 24.8 | 19.1 | 19.7 |
Diopside | 35.7 | 29.9 | 26.4 |
Ilmenite | 15.5 | 2.9 | 14.8 |
Hornblende | 21.5 | 8.0 | 19.4 |
Notes: Grains are defined as domains surrounded by boundaries with 10° or more misorientation. Grains <12 µm have been removed from the analysis, as most errors created during the data collection, noise reduction, and data manipulation phases show up as small grains. Center of shear zone data from Sample 304-U1309D-64R-2, 43 cm; edge of shear zone data from Sample 64R-2, 46 cm.