Exposure ages of glacial deposits and bedrock, Scott Glacier, Antarctica

Most samples are glacially transported clasts deposited during the last glacial period or exposed by subsequent retreat of the glacier, ca. 16,000 yr B.P. to present. These ages are based on concentrations of the cosmic-ray-produced nuclide Be-10.

There are also data from bedrock samples on Mt Rigby, which have longer and more complicated exposure histories. For these samples, concentrations of the cosmogenic nuclides Al-26 and Be-10, and associated "ages" are the result of repeated exposure punctuated with periods of ice cover and may have been affected by glacial erosion. Apparent ages for the bedrock samples should not be taken as indicative of prolonged single-stage exposure.