Figure F4. Age-depth plot for Hole 1146A based on distribution of datums (primary marker species) and their ages as given in Table T4. Sediment accumulation rates are based on foraminifer datums: 21 m/m.y. (5.5-6.4 Ma), 32 m/m.y. (6.4-8.6 Ma), 20 m/m.y. (8.6-10.5 Ma), 21 m/m.y. (10.5-15.1 Ma), 58 m/m.y. (15.1-16.4 Ma), and 8 m/m.y. (16.4-18.8 Ma). Vertical dashed lines depict the time intervals used to calculate sediment accumulation rates. Error bars for datums are omitted due to the resolution of the depth scale and symbol size. FO = first occurrence, LO = last occurrence. Nannofossil data provided by J. Shyu (pers. comm., 2002).

Figure F4. Age-depth plot for Hole 1146A based on distribution of datums (primary marker species) and their ages as given in Table T4. Sediment accumulation rates are based on foraminifer datums: 21 m/m.y. (5.5-6.4 Ma), 32 m/m.y. (6.4-8.6 Ma), 20 m/m.y. (8.6-10.5 Ma), 21 m/m.y. (10.5-15.1 Ma), 58 m/m.y. (15.1-16.4 Ma), and 8 m/m.y. (16.4-18.8 Ma). Vertical dashed lines depict the time intervals used to calculate sediment accumulation rates. Error bars for datums are omitted due to the resolution of the depth scale and symbol size. FO = first occurrence, LO = last occurrence. Nannofossil data provided by J. Shyu (pers. comm., 2002).