Figure F4. Age-depth chart for the Leg 180 sites, including a summary of inferred sedimentation rates and depths (below) complied by the Leg 180 shipboard biostratigraphers and magnetostratigraphers, after Takahashi et al., this volume. Solid line = sedimentation curve at Site 1115, dashed line = sedimentation curve at Site 1109, dotted line = sedimentation curve at Site 1118, solid line (upper right) = sedimentation curve at Site 1108, dashed line (upper right) = sedimentation curve at Site 1114, dotted line (upper right) = sedimentation curve at Site 1116. Square = based on nannofossil datum events, circle = planktonic foraminifer datum events, triangle = magnetic chron and subchron boundaries, star = lithostratigraphic correlation shaded to differentiate sites. Symbols with arrows = actual datum point can be above or below and older or younger than indicated by the symbols. Wavy lines = unconformities. Shown below are average sedimentation rates in m/m.y. (calculated for intervals separated by vertical lines and palaeobathymetry) based on benthic foraminifers at Sites 1115, 1109, and 1118. Broken lines = uncertainty in the placement of palaeodepth boundaries.