Figure F6. Close-up photographs of representative lithologies for Units II and III at Site 1261. A. Cyclic alternations between dark greenish gray calcareous chalks, light greenish gray limestones, and porcellanites seen in Unit II (interval 207-1261A-19R-2, 30–70 cm). B. P/E boundary (interval 207-1261A-33R-4, 120–140 cm). A 3-cm-thick greenish gray clay layer and superjacent 12-cm-thick reddish brown clay layer fall in a carbonate-poor interval that contains the P/E boundary.

Figure F6. Close-up photographs of representative lithologies for Units II and III at Site 1261. A. Cyclic alternations between dark greenish gray calcareous chalks, light greenish gray limestones, and porcellanites seen in Unit II (interval 207-1261A-19R-2, 30–70 cm). B. P/E boundary (interval 207-1261A-33R-4, 120–140 cm). A 3-cm-thick greenish gray clay layer and superjacent 12-cm-thick reddish brown clay layer fall in a carbonate-poor interval that contains the P/E boundary. C. Transition from the glauconitic interval of Subunit IIIB clayey calcareous chalks into the black shale of Unit IV (note large-scale bioturbation of glauconite-rich clayey chalk in the laminated black shale) (interval 207-1261B-5R-4, 100–120 cm).