Northern-hemisphere ice sheets at their maximum extent during the last glaciation, as reconstructed by George H. Denton and Terence J. Hughes, eds., The Last Great Ice Sheets (Wiley, 1981). Ice-sheet elevation contours are shown at 500-meter intervals. (The orientation has been reversed to make comparison with Fig. 7-2 easier.)
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Last modified by pib on September 15, 2000.