The 7% carbon-13 depletion in cold water phytoplankton provides a striking signal that is traceable in deep-sea cores taken in high latitude regions of the Southern hemisphere. This signal may be weak
Sediment depth is given in mbsf. Sample 205-1255A-2R-2,43-48 contains drilling slurry. Samples 1255A-DF2R, 1254A-DF1R, and 1254A-DF15R, so named for their relationship to drilling fluid (DF) and core