Mathematics – Logic
Scientific paper
Mar 1995
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1995georl..22..703b&link_type=abstract
Geophysical Research Letters (ISSN 0094-8276), vol. 22, no. 6, p. 703-706
Mathematics
Logic
33
Beryllium Isotopes, Cosmic Rays, Muons, Quartz, Weathering, Zaire, Earth Crust, Erosion, Radioactive Decay
Scientific paper
Distributions of Be-10 in vein quartz from a lateritic weathering profile from the Congo provide evidence for significant in situ production of Be-10 by reactions other than neutron-induced spallation. After consideration of geomorphological and nuclear processes which might contribute to the observed depth variability, we conclude that cosmic ray muon-induced reactions are the most likely mechanism, and that such reactions lead to 1% to 3% of Be-10 production at the surface. This mall muon-induced component has only minor implications for the use of Be-10 for quantification of exposure histories of surficial rocks. Nevertheless, the muogenic component has the potential to expand the utility of cosmogenic nuclides in examination of surficial processes, overcoming some of the limitations associated with the use of the neutron-produced component.
Bourlès Didier Louis
Brown Erik Thorson
Colin Fabrice
Desgarceaux Sophie
Raisbeck Grant M.
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