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Figure 26. Annual discharge rate of glacial meltwater emanating from rapidly melting ice sheets at the end of the Pleistocene Epoch and near the beginning of the Holocene Epoch, plotted against the annual rate of rise in eustatic sea level. The ²³⁰Th/²³⁴U-dated sea-level curve is shown with a solid line. The ¹⁴C-dated sea-level curve is shown by a dashed line; it is not corrected for changes in production of ¹⁴C. The meltwater pulse IB coincides with the 1,787 m δ¹⁸O anomaly in the ice core from the Dye 3 site in the Greenland ice sheet (10,720±150 years layer-counting calendar age) based on the ²³⁰Th/²³⁴U calendar chronology. The Younger Dryas chronozone is shown by a shaded pattern (see fig. 35). Modified from Fairbanks (1990, p. 943, fig. 3).