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Regional Correlations Of Late Pleistocene Climatic Changes Based On Cosmogenic Nuclide Exposure Dating Of Moraines In Idaho, Cody Sherard

WWU Graduate School Collection

Multiple post-last glacial maximum (LGM) moraines occur in the Sawtooth Range of the Rocky Mountains in central Idaho. Although relative ages of the moraines have been studied, few numerical ages exist for these moraine sequences. In this study, the ages of LGM and late glacial (Younger Dryas) moraines in the Redfish Lake drainage of Idaho are constrained with 23 new, cosmogenic, ¹⁰Be dates. Results of this study include developing a new chronology for the Redfish Lake late Pleistocene moraines that are consistent with regional morainal ages.

New cosmogenic ¹⁰Be data from boulders on Bull Lake moraines at Redfish …