Figure F30. Lower temperature and/or higher strain rate deformation. Clearly overprinting the high-temperature plastic fabric when present and much more localized are a series of discrete, relatively thin (generally a few centimeters up to 1 m) porphyroclastic and mylonitic shear zones. They are frequently, but not systematically, closely spatially associated with oxide concentrations. A. Interval 305-U1309D-138R-3, 45–57 cm. (Continued on next page).