A complete and easily accessible means of calculating surface exposure ages or erosion rates from 10Be and 26Al measurements

We codify previously published means of calculating exposure ages and erosion rates from Be-10 and Al-26 concentrations in rock surfaces, and present a single complete and straightforward method that reflects currently accepted practices and is consistent with existing production rate calibration measurements. It is intended to enable geoscientists, who wish to use cosmogenic-nuclide exposure age or erosion rate measurements in their work to: (a) calculate exposure ages and erosion rates; (b) compare previously published exposure ages or erosion rate measurements on a common basis; (c) evaluate the sensitivity of their results to differences between published production rate scaling schemes. The method is available online at http://hess.ess.washington.edu. (c) 2008 Published by Elsevier Ltd.