Figure 4. Relative abundances of upper Pliocene-Pleistocene and reworked Mesozoic dinoflagellate cysts in Hole 986C. N.D. = sample levels with low abundances of dinoflagellate cysts where no relative abundance data are calculated. LU = lithostratigraphic units, SU = seismic units. R1 through R5 are seismic reflectors.