A Geoscience Digital Image Library

TitleDeformation of quartzite experiment(1 of 2 photos)
DescriptionThin 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.
PhotographerJan Tullis. 1995.
CollectionKeck Structural Geology Slide Set #JT1.
Key wordsdeformation, quartzite, experiment
Tech details367 KB. Thin section.
GeoDIL number3060