Figure 2. Stratigraphic variations in the abundance and preservation of diatom valves in Hole 1018A. Oxygen isotope stages were derived by Andreasen et al. (Chap. 8, this volume). LO (last occurrence) of Proboscia curvirostris was from Table 1 (this chapter), and LO of Pseudoemiliania lacunosa (calcareous nannofossil) was from Shipboard Scientific Party (1997).

Figure 2. Stratigraphic variations in the abundance and preservation of diatom valves in Hole 1018A. Oxygen isotope stages were derived by Andreasen et al. (Chap. 8, this volume). LO (last occurrence) of Proboscia curvirostris was from Table 1 (this chapter), and LO of Pseudoemiliania lacunosa (calcareous nannofossil) was from Shipboard Scientific Party (1997).