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Al-26 and Be-10 production in iron meteoritesTo compare the Al-26/Ne-21 ages with K-40/K-41 ages, the contents of Al-26 were determined in seven iron meteorites using accelerator mass spectrometry and the light noble gas contents were determined using conventional mass spectrometry, for samples for which these values were not available. In addition, contents of Be-10 were measured. Due to the presence of boron in the samples, the values of Al-26 were found to be at least 30 percent lower than the literature values obtained by low-level counting techniques, while the Be-10 values were 10-15 percent lower. The production rates of these nuclides at different He-4/Ne-21 ratios were estimated, showing that the increase in He-4/Ne-21 ratios corresponded with decreases in Al-26 and Be-10. It was shown that the exposure ages calculated from the Ne-21/Al-26 ratio cannot be calibrated so as to agree with both the K-40/K-41 ages and ages based on the shorter-lived nuclides Ar-39 and Cl-36.
Document ID
19880050495
Acquisition Source
Legacy CDMS
Document Type
Reprint (Version printed in journal)
Authors
Aylmer, D.
(Rutgers - The State Univ. New Brunswick, NJ, United States)
Bonanno, V.
(Rutgers - The State Univ. New Brunswick, NJ, United States)
Herzog, G. F.
(Rutgers University New Brunswick, NJ, United States)
Weber, H.
(Max-Planck-Institut fuer Chemie Mainz, Federal Republic of Germany, United States)
Klein, J.
(Pennsylvania, University Philadelphia, United States)
Date Acquired
August 13, 2013
Publication Date
April 1, 1988
Publication Information
Publication: Earth and Planetary Science Letters
Volume: 88
Issue: 1-2
ISSN: 0012-821X
Subject Category
Lunar And Planetary Exploration
Accession Number
88A37722
Funding Number(s)
CONTRACT_GRANT: NAG9-26
Distribution Limits
Public
Copyright
Other

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