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Fossiliferous localities investigated in these areas were KL, KB 1, and KT 12 (Fig. KT 12 (16°00′N, 18°53′E) is the site of locality, Toros-Menalla, Upper Miocene, Northern Chad).
These new data provide constraints on a reconstruction of the retreat history of the formerly-expanded Foundation Ice Stream, derived using a numerical flowband model.
Ages were determined at two hominid localities from the Chad Basin in the Djurab Desert (Northern Chad).
Potentially the largest and least quantifiable source of uncertainty of these surface exposure ages is the variable exposure histories of individual boulders.
We use the mean square of weighted deviates (MSWD) statistic and cumulative frequency plots to identify groups of boulders that have statistically similar ages based on the number of analyses and their uncertainties.
During the most recent glaciation ice thickened by at least 450 m in the Williams Hills and at least 380 m on Mt Bragg.