Journal
EARTH AND PLANETARY SCIENCE LETTERS
Volume 337, Issue -, Pages 10-16Publisher
ELSEVIER
DOI: 10.1016/j.epsl.2012.05.007
Keywords
Moon; lunar crust; lunar magma ocean; Imbrium ejecta; thorium; SELENE (Kaguya) gamma-ray spectrometer
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Funding
- Japan Society for the Promotion of Science for Young Scientists
- Japan Society for the Promotion of Science [2110122]
- CNES
- NASA
- Grants-in-Aid for Scientific Research [23840048] Funding Source: KAKEN
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Kaguya gamma-ray spectrometer measured thorium (Th) distribution on the lunar farside with the highest sensitivity among past gamma-ray remote sensing missions. The newly obtained Th map has revealed that two regions near the equator on the farside have the lowest Th abundances. We found that the variation of the Th abundance perfectly correlates with the crustal thickness in the farside and the southern nearside, and it could be a result of the crystallization of the lunar magma ocean. (C) 2012 Elsevier B.V. All rights reserved.
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