Figure F7. Stratigraphic ranges of index siliceous microfossil species or species groups in Cape Roberts Project (CRP)-2/2A (from Olney et al., 2007). Bold = taxa used in the common occurrence zonation and diatom zonation of Scherer et al. (2000). H&B = Harwood and Bohaty (2001), SB&H = Scherer et al. (2000). Cross-hatched rectangles = intervals of low microfossil abundance that were not sampled for this study. Ages followed by Sr or Ar are strontium and argon isotope ages of Lavelle (2001) and McIntosh (2000). Remaining ages are Southern Ocean diatom datums (see Olney et al., 2007, for list of references).
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