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A long-lived magma ocean on a young Moon

Maurice, Maxime and Tosi, Nicola and Schwinger, Sabrina and Breuer, Doris and Kleine, Thorsten (2020) A long-lived magma ocean on a young Moon. Science Advances, 6 (28), eaba8949. American Association for the Advancement of Science (AAAS). doi: 10.1126/sciadv.aba8949. ISSN 2375-2548.

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Official URL: https://advances.sciencemag.org/content/6/28/eaba8949


A giant impact onto Earth led to the formation of the Moon, resulted in a lunar magma ocean (LMO), and initiated the last event of core segregation on Earth. However, the timing and temporal link of these events remain uncertain. Here, we demonstrate that the low thermal conductivity of the lunar crust combined with heat extraction by partial melting of deep cumulates undergoing convection results in an LMO solidification time scale of 150 to 200 million years. Combining this result with a crystallization model of the LMO and with the ages and isotopic compositions of lunar samples indicates that the Moon formed 4.425 ± 0.025 billion years ago. This age is in remarkable agreement with the U-Pb age of Earth, demonstrating that the U-Pb age dates the final segregation of Earth’s core.

Item URL in elib:https://elib.dlr.de/136732/
Document Type:Article
Title:A long-lived magma ocean on a young Moon
AuthorsInstitution or Email of AuthorsAuthor's ORCID iD
Maurice, MaximeMaxime.Maurice (at) dlr.deUNSPECIFIED
Tosi, Nicolanicola.tosi (at) dlr.deUNSPECIFIED
Schwinger, Sabrinasabrina.schwinger (at) dlr.deUNSPECIFIED
Breuer, DorisDoris.Breuer (at) dlr.dehttps://orcid.org/0000-0001-9019-5304
Kleine, ThorstenUniversity of Münster, Institute of Planetology, GermanyUNSPECIFIED
Journal or Publication Title:Science Advances
Refereed publication:Yes
Open Access:Yes
Gold Open Access:Yes
In ISI Web of Science:Yes
DOI :10.1126/sciadv.aba8949
Page Range:eaba8949
Publisher:American Association for the Advancement of Science (AAAS)
Keywords:Moon; Magma ocean
HGF - Research field:Aeronautics, Space and Transport
HGF - Program:Space
HGF - Program Themes:Space Exploration
DLR - Research area:Raumfahrt
DLR - Program:R EW - Space Exploration
DLR - Research theme (Project):R - Exploration of the Solar System
Location: Berlin-Adlershof
Institutes and Institutions:Institute of Planetary Research > Planetary Physics
Deposited By: Tosi, Nicola
Deposited On:27 Oct 2020 07:53
Last Modified:27 Oct 2020 07:53

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