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doi:10.2204/iodp.proc.308.202.2007

Summary

Planktonic foraminifer Zone Z and Subzones Y1–Y5 and several benthic foraminifer assemblages are recognized in samples from IODP Hole U1322B. Respectively, these faunal (sub)zones and assemblages characterize sediment intervals corresponding to MIS 1–4.

The bases of Zone Z and Subzone Y1–Y3 lie close to subbottom depths of 4, 25, 69, and 141 m, respectively. The separation of Subzones Y4 and Y5, however, is hampered by frequent slumping below 173 mbsf.

Benthic foraminifer assemblages are generally distributed in more than one interval: Bolivina assemblage at 35–85 and 150–162 mbsf, Bulimina assemblage at 4–90 and 141–183 mbsf, Uvigerina assemblage at 0–1, 10–15, and 127–132 mbsf, Globobulimina assemblage at 7–26, 68–70, and 165–172 mbsf, and the epifaunal Cibicides assemblage at 0–8 and ~20, ~130, and ~155 mbsf.