Figure F10. Photomicrographs of grains with lower exponential-R values and higher power-R values. A, B. Sample 311-U1327C-8H-3, 82–92 cm; (A) plain-polarized light; (B) cross-polarized light. C, D. Sample 311-U1329C-22X-CC, 58–68 cm; (C) plain-polarized light; (D) cross-polarized light. E, F. Sample 311-U1326C-3H-6, 75–85 cm; (E) plain-polarized light; (F) cross-polarized light. G, H. Sample 311-U1325B-24X-5, 98–108 cm; (G) plain-polarized light; (H) cross-polarized light. I, J. Sample 311-U1326D-11X-4, 30–40 cm; (I) plain-polarized light; (J) cross-polarized light.
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