A Geoscience Digital Image Library
A Geoscience Digital Image Library
| Title | Deformation of quartzite experiment(1 of 2 photos) |
|---|---|
| Description | Thin section of a quartzite experimentally deformed in axial compression at T = 800 degrees C, P = 1.5 GPa, strain rate = 10-6/sec to about 50% shortening. The deformation mechanism was climb-accomodated dislocation creep (regime 2 at Hirth and Tullis, 1992), in which the glide of dislocations is the strain-producing step and climb of dislocations is the recovery process that allows steady-state flow. Dynamic recrystallization occurs by progressive subgrain rotation, producing a “core and mantle” texture, as seen in naturally deformed quartzites at lower greenschist grade. |
| Photographer | Jan Tullis. 1995. |
| Collection | Keck Structural Geology Slide Set #JT1. |
| Key words | deformation, quartzite, experiment |
| Tech details | 367 KB. Thin section. |
| GeoDIL number | 3060 |
| Copyright | Jan Tullis |