Figure F3 shows the depth-age models for Holes 1170A and 1172A employed in Ennyu and Arthur [N1] to convert sample depths into numerical ages. The depth-age models are constructed using selected magnetostratigraphic and biostratigraphic datums from Stickley et al. (this volume) that are calibrated to the geomagnetic polarity timescale of Cande and Kent (1995) and the magnetobiochronologic timescale of Berggren et al. (1995). The event datums employed to plot Figure F3 are presented in Table T2. Each sample depth was converted to numerical age by linearly interpolating between the two consecutive datum depths immediately below and above the sample depth. The calculated numerical age for each sample depth is reported in Table T1.