Figure F2 shows an age-depth curve of Hole 1082A. Magnetic properties of this hole were measured on board (Shipboard Scientific Party, 1998), and their "model 1" of the two interpretations for polarity-chron assignment is herein employed. Two calcareous nannofossil datums, FO of Emiliania huxleyi and LO of Pseudoemiliania lacunosa (Shipboard Scientific Party, 1998; Giraudeau et al., 1998), are employed to construct a part of the age-depth curve of the uppermost sequence that belongs to the polarity chron C1n. Cande and Kent (1995) and Berggren et al. (1995) are herein employed for the geomagnetic polarity time scale. Absolute ages between control points were estimated using linear interpolation.