Cosmogenic nuclide data for glacial erratics - Marble Hills, Ellsworth Mountains, Antarctica

Approximately one-third of these samples have Holocene exposure ages, indicating that they have been exposed by thinning of the West Antarctic Ice Sheet since the last glacial maximum (LGM). The remainder of the samples contain high concentrations of cosmogenic Be-10 and Al-26, indicating more prolonged exposure, either at their present locations or at a source further inland.

The primary data are sample locations, correction factors relating to calculation of exposure ages, and concentrations of the cosmic-ray-produced nuclides Be-10 and Al-26, measured in quartz. We list conventional exposure ages for the samples, but have also provided sufficient information to allow the ages to be recomputed if nuclide production rates or correction factors are revised in future.