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Thorium distribution on the Moon: new insights from Chang'E-2 gamma-ray spectrometer
Zhu, Meng-Hua1,2,3; Chang, Jin2; Ma, Tao2
2019-06-01
Source PublicationRESEARCH IN ASTRONOMY AND ASTROPHYSICS
ISSN1674-4527
Volume19Issue:6Pages:14
Corresponding AuthorZhu, Meng-Hua(mhzhu@must.edu.mo)
AbstractWe present the thorium distribution on the lunar surface derived from observations by the Chang'E-2 gamma-ray spectrometer (CE-2 GRS). This new map shows a similar thorium distribution to previous observations. In combination with this new thorium map and impact cratering model, we investigate the origination of thorium on the Moon's highlands, which was previously thought to be contributed from Imbrium ejecta. We found that the Imbrium ejecta has a small contribution (similar to 20%-30%) to the thorium on the lunar highlands but most thorium is likely to be indigenous before the deposition of the Imbrium ejecta. This new thorium map also confirms that the eastern highlands have a relatively higher thorium concentration than the western highlands. We propose that the thin crust and large basins on the eastern highlands are responsible for this difference in thorium.
KeywordMoon Chang'E-2 Gamma-ray Spectrometer Thorium distribution
DOI10.1088/1674-4527/19/6/76
WOS KeywordPROCELLARUM KREEP TERRANE ; LUNAR FARSIDE ; RADIOACTIVE ELEMENTS ; EJECTA DISTRIBUTION ; BASIN EJECTA ; SURFACE ; ORIGIN ; IMPACT ; MANTLE ; ABUNDANCES
Indexed BySCI
Language英语
WOS Research AreaAstronomy & Astrophysics
WOS SubjectAstronomy & Astrophysics
WOS IDWOS:000470875400001
PublisherNATL ASTRONOMICAL OBSERVATORIES, CHIN ACAD SCIENCES
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Document Type期刊论文
Identifierhttp://libir.pmo.ac.cn/handle/332002/27512
Collection中国科学院紫金山天文台
Corresponding AuthorZhu, Meng-Hua
Affiliation1.Macau Univ Sci & Technol, State Key Lab Lunar & Planetary Sci, Taipa, Macao, Peoples R China
2.Chinese Acad Sci, Purple Mt Observ, Nanjing 210034, Jiangsu, Peoples R China
3.CAS Ctr Excellence Comparat Planetol, Hefei 230026, Anhui, Peoples R China
Recommended Citation
GB/T 7714
Zhu, Meng-Hua,Chang, Jin,Ma, Tao. Thorium distribution on the Moon: new insights from Chang'E-2 gamma-ray spectrometer[J]. RESEARCH IN ASTRONOMY AND ASTROPHYSICS,2019,19(6):14.
APA Zhu, Meng-Hua,Chang, Jin,&Ma, Tao.(2019).Thorium distribution on the Moon: new insights from Chang'E-2 gamma-ray spectrometer.RESEARCH IN ASTRONOMY AND ASTROPHYSICS,19(6),14.
MLA Zhu, Meng-Hua,et al."Thorium distribution on the Moon: new insights from Chang'E-2 gamma-ray spectrometer".RESEARCH IN ASTRONOMY AND ASTROPHYSICS 19.6(2019):14.
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