Page 212 - Microtectonics

202 7 · Porphyroblasts and Reaction Rims

Fig. 7.19. Garnet kyanite staurolite schist with S crenulation cleavage and staurolite porphyroblasts that are syntectonic with respect
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to D . a Inclusions in the central light-coloured staurolite crystal show gentle folding, becoming tighter towards the upper rim. Lukmanier
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Pass, Switzerland. Width of view 9.6 mm. Polars at 45°. b Detail of central upper part of photograph a, showing the abrupt curvature of S 1
in the outer rim of the staurolite crystal. S is deflected around the crystal that partly overgrows the mica-rich domains of S . Example of
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2
case f3 in Fig. 7.9. Width of view 2.4 mm. PPL