Hf-W Chronometry of Lunar Metals and the Age and Early Differentiation of the Moon-Reference-Cited by-同舟云学术

Hf-W Chronometry of Lunar Metals and the Age and Early Differentiation of the Moon

Published:2005-12-09 Issue:5754 Volume:310 Page:1671-1674
ISSN:0036-8075
Container-title:Science
language:en
Short-container-title:Science

Author:

Kleine Thorsten¹²³⁴,Palme Herbert¹²³⁴,Mezger Klaus¹²³⁴,Halliday Alex N.¹²³⁴

Affiliation:

1. Zentrallabor für Geochronologie, Institut für Mineralogie, Corrensstrasse 24, D-48149 Münster, Germany.

2. Departement für Erdwissenschaften, Institut für Isotopengeologie und Mineralische Rohstoffe, Sonneggstrasse 5, Eidgenössische Technische Hochschule (ETH) Zentrum NO, CH-8092 Zürich, Switzerland.

3. Institut für Geologie und Mineralogie, Universität zu Köln, Zülpicherstrasse 49b, D-50674 Köln, Germany.

4. Department of Earth Sciences, Oxford University, Parks Road, Oxford OX1 3PR, UK.

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 181 Ta-derived cosmogenic 182 W. The data reveal differences in indigenous 182 W/ 184 W 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 defines the completion of the major stage of Earth's accretion.

Publisher

American Association for the Advancement of Science (AAAS)

Subject

Multidisciplinary

Reference30 articles.

1. Origin of the Moon in a giant impact near the end of the Earth's formation

2. The age of ferroan anorthosite 60025: oldest crust on a young Moon?

3. An ancient Sm-Nd age for a ferroan noritic anorthosite clast from lunar breccia 67016

4. Isotopic studies of ferroan anorthosite 62236: a young lunar crustal rock from a light rare-earth-element-depleted source

5. Age and Origin of the Moon

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