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Solar wind-implanted water in Apollo 11 lunar soils and its implications

文献类型：期刊论文

作者Tian HengCi3; Hao JiaLong3; Xu YuChen2; Yang Wei3; Hu Sen3; Zhang Chi3; Lin YangTing3; Li XianHua1; Wu FuYuan1
刊名ACTA PETROLOGICA SINICA
出版日期2022-06-01
卷号38期号:6页码:1823-1831
ISSN号1000-0569
关键词Apollo 11 Lunar regolith Solar wind Water content and H isotopes Low latitude
DOI10.18654/1000-0569/2022.06.19
英文摘要To investigate the distribution of solar-wind implanted H in the low latitude regions of the lunar surface, we carried out NanoSIMS depth-profiling measurements of H isotope and water content on Apollo 11 soils that were stored in the Geological Museum, Institute of Geology and Geophysics, Chinese Academy of Sciences. The results show that the surface of all lunar grains (<200nm) has a high water content (the maximum water content varying from 0. 35% to 1. 59%), which is similar to the results of previous studies on Apollo 11 samples. Except for one plagioclase (A11-021-1) whose surface H isotope composition (delta D) is -262 parts per thousand, the other grains have very low delta D values ranging from -987 parts per thousand to - 642 parts per thousand. These characteristics indicate that the high water content in the surface layer of lunar grains is the result of solar-wind implantation rather than terrestrial contamination. The different water contents and delta D values may be caused by H diffusion after initial solar-wind implantation. In addition, we find that the water-content depth profiles of olivine, clinopyroxene and plagioclase are similar, and their water contents gradually decrease with increasing depth. By contrast, two glassy grains show simple bell-shaped water-content distributions as a function of depth that peak ca. 25 similar to 43nm below the grain surface. Such a phenomenon may be related to the difference of H diffusion rate in crystalline grain and glass and the difference of the damaged layers. As a specific study, this work also suggests that low temperature, dry and vacuum/inert gas environments are still favorable conditions for long-term preservation of extraterrestrial samples.
WOS关键词MELT INCLUSIONS ; HYDROGEN ; ORIGIN ; MOON ; REGOLITH ; SURFACE ; INTERIOR ; APATITE ; RATIOS ; RIMS
WOS研究方向Geology
语种英语
出版者SCIENCE PRESS
WOS记录号WOS:000826244200019
源URL[http://ir.iggcas.ac.cn/handle/132A11/108463]  
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Lin YangTing
作者单位1.Chinese Acad Sci, Inst Geol & Geophys, State Key Lab Lithospher Evolut, Beijing 100029, Peoples R China
2.Chinese Acad Sci, Natl Space Sci Ctr, State Key Lab Space Weather, Beijing 100190, Peoples R China
3.Chinese Acad Sci, Inst Geol & Geophys, Key Lab Earth & Planetary Phys, Beijing 100029, Peoples R China
推荐引用方式
GB/T 7714		 Tian HengCi,Hao JiaLong,Xu YuChen,et al. Solar wind-implanted water in Apollo 11 lunar soils and its implications[J]. ACTA PETROLOGICA SINICA,2022,38(6):1823-1831.
APA Tian HengCi.,Hao JiaLong.,Xu YuChen.,Yang Wei.,Hu Sen.,...&Wu FuYuan.(2022).Solar wind-implanted water in Apollo 11 lunar soils and its implications.ACTA PETROLOGICA SINICA,38(6),1823-1831.
MLA Tian HengCi,et al."Solar wind-implanted water in Apollo 11 lunar soils and its implications".ACTA PETROLOGICA SINICA 38.6(2022):1823-1831.

入库方式： OAI收割

来源：地质与地球物理研究所

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