Figure F2. Close-up photographs. A, B. Redox boundary between red (above 64 cm) and gray clay-rich diatom ooze containing a large black sulfide nodule at 100-104 cm in Unit I. C. Color change from gray to green clay-rich diatom ooze in Unit I. Note the dark sulfide-rich layer present at the boundary (~35 cm). D. Trace fossils in orange clay sediments of Subunit IIA. E. Sharp boundary (at 73 cm) between white nannofossil ooze of Subunit IIIA and brown nannofossil ooze of Subunit IIIB. Note the large sulfide nodule present at ~77 cm, right below the boundary.

Figure F2. Close-up photographs. A, B. Redox boundary between red (above 64 cm) and gray clay-rich diatom ooze containing a large black sulfide nodule at 100-104 cm in Unit I. C. Color change from gray to green clay-rich diatom ooze in Unit I. Note the dark sulfide-rich layer present at the boundary (~35 cm). D. Trace fossils in orange clay sediments of Subunit IIA. E. Sharp boundary (at 73 cm) between white nannofossil ooze of Subunit IIIA and brown nannofossil ooze of Subunit IIIB. Note the large sulfide nodule present at ~77 cm, right below the boundary.