Figure F9. Biogeochemical profiles in sediments from the northern margin (Woodlark Rise) Sites, Leg 180 (Shipboard Scientific Party, 1999). A. Total bacterial populations at Sites 1109, 1115, and 1118. The solid curve represents a general regression line of bacterial numbers vs. depth in deep-sea sediments (Parkes et al., 1994), with 95% upper and lower prediction limits shown by dashed curves. B-D. Sulfate, ammonia, and methane depth profiles at Sites 1118, 1109, and 1115. The unconformity at each site is represented by the wavy line. E. C1/C2 ratios at Sites 1108, 1109, 1115, and 1118.

Figure F9. Biogeochemical profiles in sediments from the northern margin (Woodlark Rise) Sites, Leg 180 (Shipboard Scientific Party, 1999). A. Total bacterial populations at Sites 1109, 1115, and 1118. The solid curve represents a general regression line of bacterial numbers vs. depth in deep-sea sediments (Parkes et al., 1994), with 95% upper and lower prediction limits shown by dashed curves. B-D. Sulfate, ammonia, and methane depth profiles at Sites 1118, 1109, and 1115. The unconformity at each site is represented by the wavy line. E. C₁/C₂ ratios at Sites 1108, 1109, 1115, and 1118.