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  2. 地质与地球物理研究所
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  4. 岩石圈演化国家重点实验室
Mineral Heterogeneity of Lunar Sub-milligram Basaltic Clasts and Its Effect on the Production Rates of Cosmogenic Nuclides

文献类型：期刊论文

作者Zhang, Xuhang1,2,4; Zhang, Chi1; Smith, Thomas1,2; Liu, Runchuan1,2,4; Su, Fei1; Zhang, Xiaojing3; Xiao, Yuan3; Guo, Wei1,2; Liu, Ziheng1; Li, Jiannan1
刊名ATOMIC SPECTROSCOPY
出版日期2022-07-01
卷号43期号:4页码:303-312
ISSN号0195-5373
DOI10.46770/AS.2022.013
英文摘要Precise determination of the chemical composition of lunar samples is crucial for obtaining cosmogenic noble gas production rates and reliable cosmic ray exposure (CRE) ages. In this study, we established a new non-destructive method for determining the chemical composition of small mineralogically heterogeneous lunar basaltic clasts (<1 mg) using high-resolution X-ray microcomputed tomography (mu CT). The volume of the individual mineral grains in each clast was obtained via mu CT and combined with the chemical composition and density of the minerals to estimate the bulk chemical composition of each sample. The calculated chemical compositions were ultimately used to determine cosmogenic nuclide production rates. We used the lunar mare simulant sample (LMS-1) to evaluate the uncertainty of our method on the calculation of production rates of cosmogenic Ne (Ne-20, Ne-21, and Ne-22) and Ar (Ar-38 and Ar-38) (4% and 5% were adopted as suggested values, respectively). By applying this method to five Chang'E-5 basaltic clasts, we demonstrated that the chemical compositions of lunar regolith elastic samples (basalts) were different and the maximum variations of P-21 (the production rate of cosmogenic Ne-21) and P-38 (the production rate of cosmogenic Ar-38) among the five basaltic clasts were in the range of 18-20%. Therefore, the average chemical composition cannot be used to represent a single grain. In our study, mineral heterogeneity influenced the theoretical production rate of cosmogenic noble gases. Furthermore, the maximum cosmogenic Ne-21 production rate deviation from the average value reached 18.4% (similar to 2 g/cm(2)). Our method significantly minimized the uncertainties in the production rate calculations caused by the mineral heterogeneity of the sub-milligram samples and when applied routinely would result in more reliable CRE ages.
WOS关键词RAY COMPUTED-TOMOGRAPHY ; ACQUISITION
资助项目Key Research Program of the Chinese Academy of Sciences[ZDBS-SSW-JSC007-15] ; Key Research Program of the Chinese Academy of Sciences[ZDRW-KT-2019-05] ; Key Research Program of the Institute of Geology and Geophysics, Chinese Academy of Sciences[IGGCAS-202101] ; Pre-research Project on Civil Aerospace Technologies by CNSA[D020302]
WOS研究方向Spectroscopy
语种英语
WOS记录号WOS:000855560800005
出版者ATOMIC SPECTROSCOPY PRESS LTD
资助机构Key Research Program of the Chinese Academy of Sciences ; Key Research Program of the Chinese Academy of Sciences ; Key Research Program of the Chinese Academy of Sciences ; Key Research Program of the Chinese Academy of Sciences ; Key Research Program of the Institute of Geology and Geophysics, Chinese Academy of Sciences ; Key Research Program of the Institute of Geology and Geophysics, Chinese Academy of Sciences ; Key Research Program of the Institute of Geology and Geophysics, Chinese Academy of Sciences ; Key Research Program of the Institute of Geology and Geophysics, Chinese Academy of Sciences ; Pre-research Project on Civil Aerospace Technologies by CNSA ; Pre-research Project on Civil Aerospace Technologies by CNSA ; Pre-research Project on Civil Aerospace Technologies by CNSA ; Pre-research Project on Civil Aerospace Technologies by CNSA ; Key Research Program of the Chinese Academy of Sciences ; Key Research Program of the Chinese Academy of Sciences ; Key Research Program of the Chinese Academy of Sciences ; Key Research Program of the Chinese Academy of Sciences ; Key Research Program of the Institute of Geology and Geophysics, Chinese Academy of Sciences ; Key Research Program of the Institute of Geology and Geophysics, Chinese Academy of Sciences ; Key Research Program of the Institute of Geology and Geophysics, Chinese Academy of Sciences ; Key Research Program of the Institute of Geology and Geophysics, Chinese Academy of Sciences ; Pre-research Project on Civil Aerospace Technologies by CNSA ; Pre-research Project on Civil Aerospace Technologies by CNSA ; Pre-research Project on Civil Aerospace Technologies by CNSA ; Pre-research Project on Civil Aerospace Technologies by CNSA ; Key Research Program of the Chinese Academy of Sciences ; Key Research Program of the Chinese Academy of Sciences ; Key Research Program of the Chinese Academy of Sciences ; Key Research Program of the Chinese Academy of Sciences ; Key Research Program of the Institute of Geology and Geophysics, Chinese Academy of Sciences ; Key Research Program of the Institute of Geology and Geophysics, Chinese Academy of Sciences ; Key Research Program of the Institute of Geology and Geophysics, Chinese Academy of Sciences ; Key Research Program of the Institute of Geology and Geophysics, Chinese Academy of Sciences ; Pre-research Project on Civil Aerospace Technologies by CNSA ; Pre-research Project on Civil Aerospace Technologies by CNSA ; Pre-research Project on Civil Aerospace Technologies by CNSA ; Pre-research Project on Civil Aerospace Technologies by CNSA ; Key Research Program of the Chinese Academy of Sciences ; Key Research Program of the Chinese Academy of Sciences ; Key Research Program of the Chinese Academy of Sciences ; Key Research Program of the Chinese Academy of Sciences ; Key Research Program of the Institute of Geology and Geophysics, Chinese Academy of Sciences ; Key Research Program of the Institute of Geology and Geophysics, Chinese Academy of Sciences ; Key Research Program of the Institute of Geology and Geophysics, Chinese Academy of Sciences ; Key Research Program of the Institute of Geology and Geophysics, Chinese Academy of Sciences ; Pre-research Project on Civil Aerospace Technologies by CNSA ; Pre-research Project on Civil Aerospace Technologies by CNSA ; Pre-research Project on Civil Aerospace Technologies by CNSA ; Pre-research Project on Civil Aerospace Technologies by CNSA
源URL[http://ir.iggcas.ac.cn/handle/132A11/108357]  
专题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He, Huaiyu
作者单位1.Chinses Acad Sci, Inst Geol & Geophys, Beijing 100029, Peoples R China
2.Chinese Acad Sci, Inst Geol & Geophys, State Key Lab Lithospher Evolut, Beijing 100029, Peoples R China
3.China Acad Space Technol, Qianxuesen Lab Space Technol, Beijing 100029, Peoples R China
4.Univ Chinese Acad Sci, Coll Earth & Planetary Sci, Beijing 100049, Peoples R China
推荐引用方式
GB/T 7714		 Zhang, Xuhang,Zhang, Chi,Smith, Thomas,et al. Mineral Heterogeneity of Lunar Sub-milligram Basaltic Clasts and Its Effect on the Production Rates of Cosmogenic Nuclides[J]. ATOMIC SPECTROSCOPY,2022,43(4):303-312.
APA Zhang, Xuhang.,Zhang, Chi.,Smith, Thomas.,Liu, Runchuan.,Su, Fei.,...&He, Huaiyu.(2022).Mineral Heterogeneity of Lunar Sub-milligram Basaltic Clasts and Its Effect on the Production Rates of Cosmogenic Nuclides.ATOMIC SPECTROSCOPY,43(4),303-312.
MLA Zhang, Xuhang,et al."Mineral Heterogeneity of Lunar Sub-milligram Basaltic Clasts and Its Effect on the Production Rates of Cosmogenic Nuclides".ATOMIC SPECTROSCOPY 43.4(2022):303-312.

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来源：地质与地球物理研究所

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