Figure F15. Types of layering in Unit VI. A. Greenish gray and reddish brown layers, typically tens of centimeters thick and variously bioturbated (interval 308-U1319A-4H-6, 50–68 cm). B. Thin centimeter-scale layering in greenish gray clays, not appreciably disrupted by bioturbation (interval 308-U1319A-5H-2, 48–70 cm). C. Bioturbated black organic- and pyritic-rich layers (interval 308-U1319A-7H-3, 107–125 cm).
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