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Multiple lithic clasts in lunar breccia Northwest Africa 7948 and implication for the lithologic components of lunar crust

文献类型：期刊论文

作者Zeng, Xiaojia2,3; Joy, Katherine H.4; Li, Shijie2,5; Pernet-Fisher, John F.4; Li, Xiongyao2; Martin, Dayl J. P.4; Li, Yang2; Wang, Shijie1
刊名METEORITICS & PLANETARY SCIENCE
出版日期2018-05-01
卷号53期号:5页码:1030-1050
ISSN号1086-9379
DOI10.1111/maps.13049
英文摘要This study presents the petrography, mineralogy, and bulk composition of lunar regolith breccia meteorite Northwest Africa (NWA) 7948. We identify a range of lunar lithologies including basaltic clasts (very low-titanium and low-titanium basalts), feldspathic lithologies (ferroan anorthosite, magnesian-suite rock, and alkali suite), granulites, impact melt breccias (including crystalline impact melt breccias, clast-bearing impact melt breccias, and glassy melt breccias), as well as regolith components (volcanic glass and impact glass). A compositionally unusual metal-rich clast was also identified, which may represent an impact melt lithology sourced from a unique Mg-suite parent rock. NWA 7948 has a mingled bulk rock composition (Al2O3 = 21.6 wt% and FeO = 9.4 wt%) and relatively low concentrations of incompatible trace elements (e.g., Th = 1.07 ppm and Sm = 2.99 ppm) compared with Apollo regolith breccias. Comparing the bulk composition of the meteorite with remotely sensed geochemical data sets suggests that the sample was derived from a region of the lunar surface distal from the nearside Th-rich Procellarum KREEP Terrane. Our investigations suggest that it may have been ejected from a nearside highlands-mare boundary (e.g., around Mare Crisium or Orientale) or a cryptomare region (e.g., Schickard-Schiller or Mare smythii) or a farside highlands-mare boundary (e.g., Mare Australe, Apollo basin in the South Pole-Aitken basin). The distinctive mineralogical and geochemical features of NWA 7948 suggest that the meteorite may represent lunar material that has not been reported before, and indicate that the lunar highlands exhibit wide geological diversity.
WOS关键词REGOLITH BRECCIA ; METEORITE ; GEOCHEMISTRY ; MOON ; PETROGENESIS ; PETROLOGY ; SURFACE ; MAGMATISM ; EVOLUTION ; MARE
资助项目NSFC[41473067] ; NSFC[41490630] ; Royal Society grant[RS/UF140190] ; STFC[ST/M001253/1] ; STFC studentship
WOS研究方向Geochemistry & Geophysics
语种英语
WOS记录号WOS:000431665400006
出版者WILEY
资助机构NSFC ; NSFC ; Royal Society grant ; Royal Society grant ; STFC ; STFC ; STFC studentship ; STFC studentship ; NSFC ; NSFC ; Royal Society grant ; Royal Society grant ; STFC ; STFC ; STFC studentship ; STFC studentship ; NSFC ; NSFC ; Royal Society grant ; Royal Society grant ; STFC ; STFC ; STFC studentship ; STFC studentship ; NSFC ; NSFC ; Royal Society grant ; Royal Society grant ; STFC ; STFC ; STFC studentship ; STFC studentship
源URL[http://ir.bao.ac.cn/handle/114a11/21678]  
专题中国科学院国家天文台
通讯作者Li, Shijie
作者单位1.Chinese Acad Sci, Inst Geochem, State Key Lab Environm Geochem, Guiyang 550081, Guizhou, Peoples R China
2.Chinese Acad Sci, Inst Geochem, Ctr Lunar & Planetary Sci, Guiyang 550081, Peoples R China
3.Univ Chinese Acad Sci, Beijing 10049, Peoples R China
4.Univ Manchester, Sch Earth & Environm Sci, Manchester M13 9PL, Lancs, England
5.Chinese Acad Sci, Natl Astron Observ, Key Lab Lunar & Deep Space Explorat, Beijing 100012, Peoples R China
推荐引用方式
GB/T 7714		 Zeng, Xiaojia,Joy, Katherine H.,Li, Shijie,et al. Multiple lithic clasts in lunar breccia Northwest Africa 7948 and implication for the lithologic components of lunar crust[J]. METEORITICS & PLANETARY SCIENCE,2018,53(5):1030-1050.
APA Zeng, Xiaojia.,Joy, Katherine H..,Li, Shijie.,Pernet-Fisher, John F..,Li, Xiongyao.,...&Wang, Shijie.(2018).Multiple lithic clasts in lunar breccia Northwest Africa 7948 and implication for the lithologic components of lunar crust.METEORITICS & PLANETARY SCIENCE,53(5),1030-1050.
MLA Zeng, Xiaojia,et al."Multiple lithic clasts in lunar breccia Northwest Africa 7948 and implication for the lithologic components of lunar crust".METEORITICS & PLANETARY SCIENCE 53.5(2018):1030-1050.

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