No 182W evidence for early Moon formation
Abstract
The Moon-forming giant impact was probably the last major event in Earth’s accretion, so dating this event is critical to determine the timeline of terrestrial planet formation. Recently, Thiemens et al. used the short-lived 182Hf–182W system to argue that the Moon formed within the first 60 Myr of Solar System history. Here we demonstrate, however, that mixing processes during and after the giant impact modified the 182W compositions of the Earth and Moon, which hampers the use of the Hf–W system to date the Moon. Our results show that the lunar 182W record is fully consistent with a recently determined, younger age of the Moon of 142 ± 25 Myr after Solar System formation.
- Authors:
-
[1];
[2]
- Leibniz Institute for Evolution and Biodiversity Science, Berlin (Germany); Freie Univ., Berlin (Germany)
- University of Münster (Germany)
- Publication Date:
- Research Org.:
- Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
- Sponsoring Org.:
- USDOE National Nuclear Security Administration (NNSA)
- OSTI Identifier:
- 1863174
- Report Number(s):
- LLNL-JRNL-799370
Journal ID: ISSN 1752-0894; 1002147
- Grant/Contract Number:
- AC52-07NA27344
- Resource Type:
- Accepted Manuscript
- Journal Name:
- Nature Geoscience
- Additional Journal Information:
- Journal Volume: 14; Journal Issue: 10; Journal ID: ISSN 1752-0894
- Publisher:
- Nature Publishing Group
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 58 GEOSCIENCES
Citation Formats
Kruijer, Thomas S., Archer, Gregory J., and Kleine, Thorsten. No 182W evidence for early Moon formation. United States: N. p., 2021.
Web. doi:10.1038/s41561-021-00820-2.
Kruijer, Thomas S., Archer, Gregory J., & Kleine, Thorsten. No 182W evidence for early Moon formation. United States. https://doi.org/10.1038/s41561-021-00820-2
Kruijer, Thomas S., Archer, Gregory J., and Kleine, Thorsten. Mon .
"No 182W evidence for early Moon formation". United States. https://doi.org/10.1038/s41561-021-00820-2. https://www.osti.gov/servlets/purl/1863174.
@article{osti_1863174,
title = {No 182W evidence for early Moon formation},
author = {Kruijer, Thomas S. and Archer, Gregory J. and Kleine, Thorsten},
abstractNote = {The Moon-forming giant impact was probably the last major event in Earth’s accretion, so dating this event is critical to determine the timeline of terrestrial planet formation. Recently, Thiemens et al. used the short-lived 182Hf–182W system to argue that the Moon formed within the first 60 Myr of Solar System history. Here we demonstrate, however, that mixing processes during and after the giant impact modified the 182W compositions of the Earth and Moon, which hampers the use of the Hf–W system to date the Moon. Our results show that the lunar 182W record is fully consistent with a recently determined, younger age of the Moon of 142 ± 25 Myr after Solar System formation.},
doi = {10.1038/s41561-021-00820-2},
journal = {Nature Geoscience},
number = 10,
volume = 14,
place = {United States},
year = {Mon Sep 13 00:00:00 EDT 2021},
month = {Mon Sep 13 00:00:00 EDT 2021}
}
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