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Intricate Regolith Reworking Processes Revealed by Microstructures on Lunar Impact Glasses

文献类型：期刊论文

作者Yan, Pan6; Xiao, Zhiyong5,6; Wu, Yunhua6; Yang, Wei4; Li, Jin-Hua4; Gu, Li-Xin4; Liao, Shiyong3; Yin, Zongjun1,2; Wang, Hao10; Tian, Heng-Ci4
刊名JOURNAL OF GEOPHYSICAL RESEARCH-PLANETS
出版日期2022-12-01
卷号127期号:12页码:36
关键词lunar regolith Chang'E-5 impact glass space weathering impact spherule
ISSN号2169-9097
DOI10.1029/2022JE007260
英文摘要Glasses cooled from impact melt and vapor are a common component in lunar regolith, carrying important information about protolith composition, regolith formation, and impact flux on the Moon. Interpretations, however, are frequently challenged due to widespread ambiguity in determining their provenances. Regolith samples returned by China's Chang'E-5 mission provide a unique opportunity to study the microscopic mechanism of regolith reworking on the Moon, because as evidenced by the coherent radioisotope ages and petrographic characteristics of basaltic clasts in the regolith, the Chang'E-5 regolith was mainly evolved from local mare materials, containing minor exotic components. Here, we report 153 glass particles larger than 20 mu m in diameters that were screened from 500 mg of Chang'E-5 regolith. Most glass particles have rotational shapes and contain structural and/or compositional heterogeneities in interiors, and geochemical analyses reveal a dominant origin as impact melt of local mare materials. Surfaces of the impact glasses are observed to have abundant protruded and dented microstructures, which are classified as different groups based on their morphology and geochemistry. Similar microstructures were observed on impact spherules collected by the Apollo and Luna missions, but those on the Chang'E-5 impact glasses were formed without substantial involvement of exotic ejecta. Microstructures such as silicate melt pancakes that frequently exhibit flow spikes at margins, nano-phase iron-rich mounds that are arranged with semi-equidistant spaces in curves and patches, spatially clustered microcraters that are indicative of secondary impacts, and blunt linear scratches with terminal particles all suggest that regolith reworking mainly occurred among local materials at low speeds.
WOS关键词AUSTRALASIAN MICROTEKTITES ; 40AR/39AR AGES ; LANDING SITE ; SURFACE ; CRATERS ; ORIGIN ; MOON ; FRACTIONATION ; PROVENANCE ; CHEMISTRY
资助项目Strategic Priority Research Program of Chinese Academy of Science[XDB41000000] ; Key Research program of Chinese Academy of Sciences[ZDBS-SSW-JSC007-13] ; institute of Geology and Geophysics, Chinese Academy of Sciences[IGGCAS-202101]
WOS研究方向Geochemistry & Geophysics
语种英语
WOS记录号WOS:000908346300007
出版者AMER GEOPHYSICAL UNION
资助机构Strategic Priority Research Program of Chinese Academy of Science ; Strategic Priority Research Program of Chinese Academy of Science ; Key Research program of Chinese Academy of Sciences ; Key Research program of Chinese Academy of Sciences ; institute of Geology and Geophysics, Chinese Academy of Sciences ; institute of Geology and Geophysics, Chinese Academy of Sciences ; Strategic Priority Research Program of Chinese Academy of Science ; Strategic Priority Research Program of Chinese Academy of Science ; Key Research program of Chinese Academy of Sciences ; Key Research program of Chinese Academy of Sciences ; institute of Geology and Geophysics, Chinese Academy of Sciences ; institute of Geology and Geophysics, Chinese Academy of Sciences ; Strategic Priority Research Program of Chinese Academy of Science ; Strategic Priority Research Program of Chinese Academy of Science ; Key Research program of Chinese Academy of Sciences ; Key Research program of Chinese Academy of Sciences ; institute of Geology and Geophysics, Chinese Academy of Sciences ; institute of Geology and Geophysics, Chinese Academy of Sciences ; Strategic Priority Research Program of Chinese Academy of Science ; Strategic Priority Research Program of Chinese Academy of Science ; Key Research program of Chinese Academy of Sciences ; Key Research program of Chinese Academy of Sciences ; institute of Geology and Geophysics, Chinese Academy of Sciences ; institute of Geology and Geophysics, Chinese Academy of Sciences
源URL[http://ir.iggcas.ac.cn/handle/132A11/106889]  
专题地质与地球物理研究所_中国科学院地球与行星物理重点实验室
地质与地球物理研究所_岩石圈演化国家重点实验室
通讯作者Xiao, Zhiyong
作者单位1.Chinese Acad Sci, Ctr Excellence Life & Paleoenvironm, Nanjing, Peoples R China
2.Chinese Acad Sci, Nanjing Inst Geol & Paleontol, State Key Lab Palaeobiol & Stratig, Nanjing, Peoples R China
3.Chinese Acad Sci, Key Lab Planetary Sci, Purple Mt Observ, Nanjing, Peoples R China
4.Chinese Acad Sci, Inst Geol & Geophys, Key Lab Earth & Planetary Phys, Beijing, Peoples R China
5.Chinese Acad Sci, Ctr Excellence Comparat Planetol, Hefei, Peoples R China
6.Sun Yat Sen Univ, Sch Atmospher Sci, Planetary Environm & Astrobiol Res Lab, Zhuhai, Peoples R China
7.Chinese Acad Sci, Natl Space Sci Ctr, Beijing, Peoples R China
8.Nanjing Univ, Lunar & Planetary Sci Inst, Sch Earth Sci & Engn, Nanjing, Peoples R China
9.Nanjing Univ, State Key Lab Mineral Deposits Res, Nanjing, Peoples R China
10.Chinese Acad Sci, Inst Geol & Geophys, State Key Lab Lithospher Evolut, Beijing, Peoples R China
推荐引用方式
GB/T 7714		 Yan, Pan,Xiao, Zhiyong,Wu, Yunhua,et al. Intricate Regolith Reworking Processes Revealed by Microstructures on Lunar Impact Glasses[J]. JOURNAL OF GEOPHYSICAL RESEARCH-PLANETS,2022,127(12):36.
APA Yan, Pan.,Xiao, Zhiyong.,Wu, Yunhua.,Yang, Wei.,Li, Jin-Hua.,...&Li, Xian-Hua.(2022).Intricate Regolith Reworking Processes Revealed by Microstructures on Lunar Impact Glasses.JOURNAL OF GEOPHYSICAL RESEARCH-PLANETS,127(12),36.
MLA Yan, Pan,et al."Intricate Regolith Reworking Processes Revealed by Microstructures on Lunar Impact Glasses".JOURNAL OF GEOPHYSICAL RESEARCH-PLANETS 127.12(2022):36.

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来源：地质与地球物理研究所

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