Figure F23. Major Leg 181 stratigraphic and climatic events plotted against the summary global ocean benthic foraminifer oxygen isotope curve of Zachos et al. (2001). The temperature scale (right) is scaled to an ice-free ocean, and therefore only applies for the period 35-65 Ma. N.Z. = New Zealand. PETM = Paleocene/Eocene Thermal Maximum; DWBC = Deep Western Boundary Current; STF = Subtropical Front; AAIW = Antarctic Intermediate Water; VZ = volcanic zone. See caption to Figure F6 for key to New Zealand biostratigraphic stage abbreviations.