Figure F6. Close-up photographs of typical lithologies of Units IV and V. A. Laminations, light–dark cycles, white calcareous laminae, and tan phosphatic lenses in Unit IV (interval 207-1257C-13R-2, 9–30 cm). B. Laminations and a layer containing abundant fish debris at 88 cm and a small phosphatic nodule at 91 cm in Unit IV (Sample 207-1257B-25R-2, 86

Figure F6. Close-up photographs of typical lithologies of Units IV and V. A. Laminations, light–dark cycles, white calcareous laminae, and tan phosphatic lenses in Unit IV (interval 207-1257C-13R-2, 9–30 cm). B. Laminations and a layer containing abundant fish debris at 88 cm and a small phosphatic nodule at 91 cm in Unit IV (Sample 207-1257B-25R-2, 86–92 cm). C. Typical laminated limestone in Unit IV (interval 207-1257B-25R-2, 20–40 cm). D. Subhorizontal wavy fabric characteristic of Unit V (interval 207-1257B-27R-3, 100–140 cm). E. Pyrite in Unit V (interval 207-1257B-26R-3, 100–140 cm).