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A complete and easily accessible means of calculating surface exposure ages or erosion rates from Be and Al measurements |
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| Authors: | Greg Balco John O Stone Nathaniel A Lifton Tibor J Dunai |
| Institution: | aQuaternary Research Center and Department of Earth and Space Sciences, University of Washington, Mail Stop 351310, Seattle, WA 98195-1310, USA bGeosciences Department, University of Arizona, Tucson, AZ 85721, USA cUniversity of Edinburgh, School of GeoSciences, Institute of Geography, Drummond Street, Edinburgh EH8 9XP, UK |
| Abstract: | We codify previously published means of calculating exposure ages and erosion rates from 10Be and 26Al 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. |
| Keywords: | Cosmogenic-nuclide geochronology Beryllium-10 Aluminum-26 Exposure dating Erosion rate measurements |
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