Figure F9. Mix of patchy carbonate and microporous (blue) kaolinite? (Sample 210-1276A-90R-5, 87 cm). Authigenic phases may be replacing feldspar grain. A. Plane-polarized light. B. Cross-polarized light.

Figure F9. Mix of patchy carbonate and microporous (blue) kaolinite? (Sample 210-1276A-90R-5, 87 cm). Authigenic phases may be replacing feldspar grain. A. Plane-polarized light. B. Cross-polarized light.