Thorium distribution on the Moon: new insights from Chang'E-2 gamma-ray spectrometer

doi:10.1088/1674-4527/19/6/76

	Thorium distribution on the Moon: new insights from Chang'E-2 gamma-ray spectrometer
	Zhu, Meng-Hua 1,2,3; Chang, Jin2 ; Ma, Tao2
刊名	RESEARCH IN ASTRONOMY AND ASTROPHYSICS
	2019-06-01
卷号	19 期号:6 页码:14
关键词	Moon Chang'E-2 Gamma-ray Spectrometer Thorium distribution
ISSN号	1674-4527
DOI	10.1088/1674-4527/19/6/76
通讯作者	Zhu, Meng-Hua(mhzhu@must.edu.mo)
英文摘要	We 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.
WOS关键词	PROCELLARUM KREEP TERRANE ; LUNAR FARSIDE ; RADIOACTIVE ELEMENTS ; EJECTA DISTRIBUTION ; BASIN EJECTA ; SURFACE ; ORIGIN ; IMPACT ; MANTLE ; ABUNDANCES
WOS研究方向	Astronomy & Astrophysics
语种	英语
出版者	NATL ASTRONOMICAL OBSERVATORIES, CHIN ACAD SCIENCES
WOS记录号	WOS:000470875400001
内容类型	期刊论文
源URL	[http://libir.pmo.ac.cn/handle/332002/27511]
专题	中国科学院紫金山天文台
通讯作者	Zhu, Meng-Hua
作者单位	1.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
推荐引用方式 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.