Extended Data Table 1 Age tie points for Site U1521 below 75 mbsf

From: A large West Antarctic Ice Sheet explains early Neogene sea-level amplitude

  1. FAD: First Appearance Datum, LAD: Last Appearance Datum. Depth errors for the biostratigraphic datums reflect the position of the first downhole sample in which the reported species was not observed. We cannot exclude the possibility that the true first observation occurs between this sample and that reported as the FAD. Opal-CT indicates that the lowermost occurrence is uncertain due to poor preservation below the Opal-CT transition (~286.1 mbsf). Age errors for the biostratigraphic events are given as the maximum and minimum reported ages based on hybrid range models89,90. Magnetic Polarity Reversals (MPR) depths are given as midpoints between samples with differing polarities, with the depth error indicating the distance to these samples.
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