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Nb/Zr fractionation on the Moon and the search for extinct Nb-92

Abstract:

A comprehensive Zr isotopic study was conducted on eleven lunar basalts and highland rocks to search for evidence of the extinct nuclide 92Nb, which decays to 92Zr with a half-life of 36 Ma. Internal isochrons were determined for two early highland rocks, 77215 and 60025. No resolvable Zr isotopic variations were detected in this wide range of lunar samples and thus there is no evidence for the former existence of live 92Nb on the Moon. The Nb/Zr ratios of lunar ilmenites and bulk rock sample...

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Publication status:
Published

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Publisher copy:
10.1016/j.gca.2004.08.003

Authors


Schonbachler, M More by this author
Rehkamper, M More by this author
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Institution:
University of Oxford
Department:
Oxford, MPLS, Earth Sciences
Hattendorf, B More by this author
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Journal:
GEOCHIMICA ET COSMOCHIMICA ACTA
Volume:
69
Issue:
3
Pages:
775-785
Publication date:
2005-02-01
DOI:
ISSN:
0016-7037
URN:
uuid:b6064b58-ab72-4f43-8935-44cc4d51bd07
Source identifiers:
152086
Local pid:
pubs:152086
Language:
English

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