PMO OpenIR
Mineral chemistry and in situ U-Pb geochronology of the mare basalt Northwest Africa 10597: Implications for low-Ti mare volcanism around 3.0 Ga
Wu, Yunhua1,2; Hsu, Weibiao1,3
2020-03-01
Source PublicationICARUS
ISSN0019-1035
Volume338Pages:14
Corresponding AuthorHsu, Weibiao(wbxu@pmo.ac.cn)
AbstractUnbrecciated mare basalts are rare in the lunar meteorite collection. Found in 2015, Northwest Africa (NWA) 10597 is a medium-grained low-Ti mare basalt with a subophitic texture. The meteorite consists mostly of mm-sized pyroxene and plagioclase, with minor olivine, spinel, ilmenite, phosphates, silica, and trace Zr-rich minerals, such as baddeleyite, zirconolite and tranquillityite. A portion of plagioclase and silica has been transformed to their high-pressure polymorphs due to shock metamorphism. NWA 10597 has a low TiO2 content (2.9 wt%) but is relatively enriched in rare earth elements (REE) (La-average = 65 x CI) with an overall unfractionated pattern except for a negative Eu anomaly. Calculated REE concentrations of parent melts in equilibrium with Mg-rich pyroxene and Ca-rich plagioclase suggest no significant assimilation of REE-rich melts after the onset of pyroxene crystallization. In situ U-Pb analyses of baddeleyite and apatite reveal a mutually consistent age of similar to 3.0 Ga, which is also in excellent agreement with that of low-Ti mare basalts NWA 4734 and LaPaz Icefield (LAP) 02205 dated with other independent techniques. The concordance suggests no significant thermal disturbance in the U-Pb isotopic system of NWA 10597 although it was heavily shocked. NWA 10597 closely resembles NWA 4734 in terms of petrographic texture, mineral chemistry and geochronology, indicating a pairing relationship.
KeywordMoon Lunar meteorites Mare volcanism
DOI10.1016/j.icarus.2019.113531
WOS KeywordLUNAR METEORITE ; LAPAZ-ICEFIELD ; SHOCK METAMORPHISM ; ISOTOPIC SYSTEMATICS ; OCEANUS PROCELLARUM ; MASS-SPECTROMETRY ; TRACE-ELEMENTS ; ICP-MS ; TH-PB ; RB-SR
Indexed BySCI
Language英语
WOS Research AreaAstronomy & Astrophysics
WOS SubjectAstronomy & Astrophysics
WOS IDWOS:000516888000021
PublisherACADEMIC PRESS INC ELSEVIER SCIENCE
Citation statistics
Cited Times:2[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://libir.pmo.ac.cn/handle/332002/36054
Collection中国科学院紫金山天文台
Corresponding AuthorHsu, Weibiao
Affiliation1.Purple Mt Observ, CAS Ctr Excellence Comparat Planetol, Nanjing 210033, Peoples R China
2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
3.Macau Univ Sci & Technol, State Key Lab Lunar & Planetary Sci, Space Sci Inst, Taipa, Macao, Peoples R China
Recommended Citation
GB/T 7714
Wu, Yunhua,Hsu, Weibiao. Mineral chemistry and in situ U-Pb geochronology of the mare basalt Northwest Africa 10597: Implications for low-Ti mare volcanism around 3.0 Ga[J]. ICARUS,2020,338:14.
APA Wu, Yunhua,&Hsu, Weibiao.(2020).Mineral chemistry and in situ U-Pb geochronology of the mare basalt Northwest Africa 10597: Implications for low-Ti mare volcanism around 3.0 Ga.ICARUS,338,14.
MLA Wu, Yunhua,et al."Mineral chemistry and in situ U-Pb geochronology of the mare basalt Northwest Africa 10597: Implications for low-Ti mare volcanism around 3.0 Ga".ICARUS 338(2020):14.
Files in This Item:
There are no files associated with this item.
Related Services
Recommend this item
Bookmark
Usage statistics
Export to Endnote
Google Scholar
Similar articles in Google Scholar
[Wu, Yunhua]'s Articles
[Hsu, Weibiao]'s Articles
Baidu academic
Similar articles in Baidu academic
[Wu, Yunhua]'s Articles
[Hsu, Weibiao]'s Articles
Bing Scholar
Similar articles in Bing Scholar
[Wu, Yunhua]'s Articles
[Hsu, Weibiao]'s Articles
Terms of Use
No data!
Social Bookmark/Share
All comments (0)
No comment.
 

Items in the repository are protected by copyright, with all rights reserved, unless otherwise indicated.