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Asymmetric thermal evolution of the Moon

Laneuville, Matthieu and Wieczorek, Mark and Breuer, Doris and Tosi, Nicola (2013) Asymmetric thermal evolution of the Moon. Journal of Geophysical Research, 118 (7), pp. 1435-1452. Wiley. doi: 10.1002/jgre.20103. ISSN 0148-0227.

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Official URL: http://onlinelibrary.wiley.com/doi/10.1002/jgre.20103/abstract


[1] The Moon possesses a clear dichotomy in geological processes between the nearside and farside hemispheres. The most pronounced expressions of this dichotomy are the strong concentration of radioactive heat sources on the nearside in a region known as the Procellarum KREEP Terrane (PKT) and the mare basaltic lava flows that erupted in or adjacent to this terrane. We model the thermochemical evolution of the Moon using a 3-D spherical thermochemical convection code in order to assess the consequences of a layer enriched in heat sources below the PKT on the Moon's global evolution. We find that in addition to localizing most of the melt production on the nearside, such an enriched concentration of heat sources in the PKT crust has an influence down to the core-mantle boundary and leaves a present-day temperature anomaly within the nearside mantle. Moderate gravitational and topographic anomalies that are predicted in the PKT, but not observed, may be masked either by crustal thinning or gravitational anomalies from dense material in the underlying mantle. Our models also predict crystallization of an inner core for sulfur concentrations less than 6 wt %.

Item URL in elib:https://elib.dlr.de/83533/
Document Type:Article
Title:Asymmetric thermal evolution of the Moon
AuthorsInstitution or Email of AuthorsAuthor's ORCID iDORCID Put Code
Wieczorek, MarkInstitut de Physique du Globe de Paris Université Paris Diderot Case 7071, Lamarck A 5, rue Thomas Mann 75205 Paris Cedex 13, FranceUNSPECIFIEDUNSPECIFIED
Breuer, DorisUNSPECIFIEDhttps://orcid.org/0000-0001-9019-5304UNSPECIFIED
Tosi, NicolaUNSPECIFIEDhttps://orcid.org/0000-0002-4912-2848UNSPECIFIED
Journal or Publication Title:Journal of Geophysical Research
Refereed publication:Yes
Open Access:No
Gold Open Access:No
In ISI Web of Science:Yes
Page Range:pp. 1435-1452
EditorsEmailEditor's ORCID iDORCID Put Code
Wieczorek, MarkInstitut de Physique du Globe de Paris Université Paris Diderot Case 7071, Lamarck A 5, rue Thomas Mann 75205 Paris Cedex 13, FranceUNSPECIFIEDUNSPECIFIED
Baratoux, Davidnstitut de Recherche en Astrophysique et Planétologie University of Toulouse 14, Avenue Edouard Belin 31 400 ToulouseUNSPECIFIEDUNSPECIFIED
Keywords:Moon, PKT, asymmetric thermal evolution
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
Institute of Planetary Research
Deposited By: Rückriemen, Tina
Deposited On:20 Aug 2013 11:00
Last Modified:28 Mar 2023 23:41

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