Naturally deformed quartzo-feldspathic rocks
Figure caption
weak deformation (Mulwaree) / strong deformation (Mulwaree) / mylonites (Redbank) / ultramylonites (Redbank)
74
Detail of granodiorite highly deformed at mid greenschist conditions.
Higher magnification view of sample shown in photo #73. Prototmylonitic granodiorite. Almost all the biotite has dynamically recrystallized and the quartz has been flattened into ribbon grains with substantial recrystallization by subgrain rotation (dislocation creep regime 2). Feldspar is present as clasts, fractured but not showing any traces of dynamic recrystallization or reaction. Coalescence of quartz and biotite has formed continuous weak layers.