2/ Shearing leads to the flattening and stretching of rock's forming grains and minerals. Shearing evolves more pervasive/continuous fabrics as temperature/depth increases. At relatively low temperature (250-450ºC) shearing is more localized and strong minerals such as feldspar are brittle. At relatively high temperature (>600ºC) strain is more homogeneous as feldspar becomes ductile.
