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Depth of synthetic isochrones of ages (a) 11.7 ka (beginning of the Holocene epoch), (b) 29 ka (approximately the Last Glacial Maximum; end of Marine Isotope Stage (MIS) 3) [Lisiecki and Raymo, 2005], (c) 57 ka (beginning of MIS 3), and (d) 115 ka (end of the Eemian period) across the GrIS. (e–h) Uncertainty in the depth of the 11.7, 29, 57, and 115 ka isochrones, respectively.
