Page 231 - Microtectonics

7.6 · Problematic Porphyroblast Microstructures 221

Fig. 7.44. Two albite porphyroblasts with approximately straight inclusion patterns that make a sharp angle. The crystals apparently approached
each other during progressive deformation. Compare with Fig. 7.40 second stage. Elephant Island, West Antarctica. Width of view 6 mm. CPL

Fig. 7.45. Intergrown albite porphyroblasts with orthogonal inclusion patterns; the contact has a stylolitic appearance typical for inter-
penetration by pressure solution; compare Fig. 7.40, last stage. Elephant Island, West Antarctica. Width of view 5 mm. Polarizers at 30°