Audubon: New Name for Colorado Front Range Neoglacial Deposits Formerly Called “Arikaree”

Two glacial fluctuations, Temple Lake (4,500 to 2,700 BP) and Gannett Peak (300 to 100 BP), are recognized in the Colorado Front Range. Lichenometrical investigations led to the identification and dating of an intermediate period of ice and rock glacier advance, locally called the “Arikaree” (1,900 to 950 BP). Because the name “Arikaree” is preempted in the Colorado stratigraphic column, it is suggested that the intermediate age Neoglacial deposits be renamed Audubon.