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Correlated helium-3 and tungsten isotopes in iron meteorites: Quantitative cosmogenic corrections and planetesimal formation times

Abstract:

Core formation in planetesimals can, in principle, be dated using the short-lived 182Hf-182W chronometer. However, it has been predicted that burnout and production of W isotopes by nuclear reactions can substantially modify the compositions in iron meteorites when exposed for several hundred million years (Myr) to galactic cosmic-rays. This may severely limit the use of the Hf-W system for determining chronologies of metal segregation as recorded in iron meteorites. Here we present the first...

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Publication status:
Published

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Publisher copy:
10.1016/j.epsl.2006.07.033

Authors


Markowski, A More by this author
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Institution:
University of Oxford
Department:
Oxford, MPLS, Earth Sciences
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Journal:
EARTH AND PLANETARY SCIENCE LETTERS
Volume:
250
Issue:
1-2
Pages:
104-115
Publication date:
2006-10-15
DOI:
ISSN:
0012-821X
URN:
uuid:9602981d-4811-43ec-a288-ea2e7d2f94c6
Source identifiers:
82697
Local pid:
pubs:82697

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