Exposure ages of glacial deposits and bedrock surface samples, Beardmore and Shackleton Glaciers, Antarctica

This data set contains cosmogenic nuclide exposure ages for glacial deposits and bedrock surface samples from the Transantarctic Mountains. The sites covered comprise The Cloudmaker, Mt Kyffin and Mt Hope on Beardmore Glacier, and Nilsen Peak, Mt Franke, Gemini Nunataks, Taylor Nunatak, Thanksgiving Point and Mt Heekin on Shackleton Glacier. The data are formatted for input into the CRONUS online calculator (hess.ess.washington.edu/math/).

The calculator provides a means of calculating exposure ages using the present best estimates for the nuclide production rates. For bedrock samples, apparent exposure ages can be calculated from Be-10, Al-26 and in some cases Cl-36 data, and represent minimum limits on the cumulative exposure time of the surfaces; combinations of the Cl-36, Al-26 and Be-10 data in these samples can also be used to place constraints on the long-term ice-cover history of the samples.