Photo #1

The mylonitic gneiss exhibits a well-developed S-C fabric.
The white feldspar porphyroclast (just below and left of center) has recrystallized tails indicating top-to-the-left (SW) shear.
Note that the rocks in this photo have experienced a brittle overprint of the ductile fabric.
East Saguaro National Park, southern Arizona. View looking NW. Pencil for scale.

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