Figure F28. Photomicrographs of plagioclase phenocrysts and glomerocrysts, Hole U1347A. Depths are at tops of thin section intervals. A. Tabular plagioclase with devitrified inclusions parallel to C-axis that is broken on the lower side of the crystal. Flow 3; 198.31 mbsf (Thin Section 88; Sample 324-U1347A-16R-4, 4–8 cm). B. Plagioclase synneusis-twin aggregate. Flow 1; 169.05 mbsf (Thin Section 72; Sample 324-U1347A-13R-2, 56–59 cm). C, E, F. In C, a multicrystal aggregate has devitrified inclusions and oscillatory and normal zoning. In E, large plagioclase glomerocryst can be seen. F contains a detail of plagioclase with interior skeletal inclusions and oscillatory zoning in the lower right corner of E. Flow 4; 214.42 mbsf (Thin Sample 96; Sample 324-U1347A-18R-1, 42–43 cm). D. Large irregular multicrystal plagioclase glomerocryst with devitrified inclusions occurring in volcanic glass. Top of Flow 4; 205.92 mbsf (Thin Section 92; Sample 324-U1347A-17R-2, 9–11 cm). D is under plane-polarized light; all others are under cross-polarized light.
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