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Measurements of Cosmogenic 14C Produced by Spallation in High-Altitude Rocks

Published online by Cambridge University Press:  18 July 2016

A. J. T. Jull ,
Amy E. Wilson ,
George S. Burr ,
Laurence J. Toolin  and
Douglas J. Donahue
A. J. T. Jull
Affiliation:
NSF-Arizona Accelerator Facility for Radioisotope Analysis, The University of Arizona, Tucson Arizona 85721 USA
Amy E. Wilson
Affiliation:
NSF-Arizona Accelerator Facility for Radioisotope Analysis, The University of Arizona, Tucson Arizona 85721 USA
George S. Burr
Affiliation:
NSF-Arizona Accelerator Facility for Radioisotope Analysis, The University of Arizona, Tucson Arizona 85721 USA
Laurence J. Toolin
Affiliation:
NSF-Arizona Accelerator Facility for Radioisotope Analysis, The University of Arizona, Tucson Arizona 85721 USA
Douglas J. Donahue
Affiliation:
NSF-Arizona Accelerator Facility for Radioisotope Analysis, The University of Arizona, Tucson Arizona 85721 USA
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Abstract

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The production of radioisotopes at the Earth's surface by cosmic-ray effects has been discussed for many years. Only in the past few years, with the higher sensitivity provided by accelerator mass spectrometry (AMS) in detecting 10Be, 26A1 and 36Cl, have the radioisotopes produced in this way been measured. We report here our measurements of cosmogenic 14C in terrestrial rocks at high altitude, and comparisons to other exposure-dating methods.

Type
III. Global 14C Production and Variation
Information
Radiocarbon , Volume 34 , Issue 3: Proceedings of the 14th International Radiocarbon Conference , 1992 , pp. 737 - 744
Copyright
Copyright © The American Journal of Science 

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