Page 146 - Microtectonics

5.6 · Microscopic Shear Sense Indicators in Mylonite 135

Fig. 5.24. δ-type mantled porphyroclast of K-feldspar in quartz-feldspar-mica ultramylonite. The object shows weak stair-stepping. A
layer rich in white mica below the porphyroclast shows an oblique mica fabric. Section parallel to the aggregate lineation and normal to
the foliation. Dextral shear sense. St. Barthélemy Massif, Pyrenees, France. Width of view 0.3 mm. PPL

Fig. 5.25. Complex mantled porphyroclast of K-feldspar in quartzite mylonite. Section parallel to the aggregate lineation and normal to
the foliation. Dextral shear sense. St. Barthélemy Massif, Pyrenees, France. Width of view 2 mm. PPL