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Planetary science: Hf-W chronometry of lunar metals and the age and early differentiation of the moon

Abstract:

The use of hafnium-tungsten chronometry to date the Moon is hampered by cosmogenic tungsten-182 production mainly by neutron capture of tantalum-181 at the lunar surface. We report tungsten isotope data for lunar metals, which contain no 181Ta-derived cosmogenic 182W. The data reveal differences in indigenous 182W/184W of lunar mantle reservoirs, indicating crystallization of the lunar magma ocean 4.527 ± 0.010 billion years ago. This age is consistent with the giant impact hypothesis and def...

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Publisher copy:
10.1126/science.1118842

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Institution:
University of Oxford
Division:
MPLS
Department:
Earth Sciences
Role:
Author
Journal:
Science
Volume:
310
Issue:
5754
Pages:
1671-1674
Publication date:
2005-12-09
DOI:
EISSN:
1095-9203
ISSN:
0036-8075
Source identifiers:
83363
Language:
English
Pubs id:
pubs:83363
UUID:
uuid:09e1b529-2f5c-46e5-a4b7-ed6d8ee76ae4
Local pid:
pubs:83363
Deposit date:
2012-12-19

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