Atomic-Level Structural Responses of Chang'e-5 Ilmenite to Space Weathering
文献类型：期刊论文
| 作者 | Zhang, Chaoqun1,7,8; Niu, Xiaoguang5,6; Gu, Lixin6; Tang, Xu6; Chen, Yi4,5; Cai, Changrun3; Dai, Yanchao3; Li, Gen3; He, Hongping2; Pan, Yongxin5,6 |
| 刊名 | JOURNAL OF GEOPHYSICAL RESEARCH-PLANETS
 |
| 出版日期 | 2024-11-01 |
| 卷号 | 129期号:11页码:10 |
| 关键词 | CE-5 lunar soil ilmenite space weathering Cs-corrected STEM thermodynamic calculation |
| ISSN号 | 2169-9097 |
| DOI | 10.1029/2024JE008447 |
| 英文摘要 | Space weathering records provide insights to better understand the formation and evolution of the lunar regolith. Ilmenite has contrasting responses to different space weathering processes. However, the atomic-scale structural modification of ilmenite induced using different space weathering processes remains poorly understood. Here, we investigate the effects of spacing weathering on lunar ilmenite grains returned from Chang'e-5 (CE-5) mission using a combination of transmission electron microscopy and thermodynamic modeling approaches. Experimental results show that melt shock induces the formation of twining structures and vein-like Si-Ca-rich nanostructures in the outermost and sub-outermost layers of ilmenite, respectively. In contrast, solar wind causes the formation of multilayered nanostructures surrounding the ilmenite grains. These structures are characterized by an outermost amorphous Si-rich vapor deposited layer, a middle layer rich in titanium (Ti) oxides and zero-valent iron (Fe0) nanoparticles, and an innermost layer hosting crystallographic orientation defect. The Ti oxides were identified as poorly crystallized anatase. Thermodynamic calculations indicate that the disruptive sputtering of solar wind and the reduction of hydrogen under lunar surface pressure conditions can promote ilmenite transformation into Fe0 and Ti oxides; nevertheless, the pressure increase associated with melt shock can lead to a rise in the decomposition temperature of ilmenite. In other words, solar wind irradiation plays a more significant role in promoting nanoparticle (such as anatase and Fe0) formation as compared to melt shock. Thus, unlike the chemical alteration of ilmenite induced by the solar wind irradiation, melt shock mainly causes physical changes in ilmenite grains. |
| WOS研究方向 | Geochemistry & Geophysics |
| 语种 | 英语 |
| WOS记录号 | WOS:001369043100001 |
| 源URL | [http://ir.gig.ac.cn/handle/344008/81929]  |
| 专题 | 中国科学院矿物学与成矿学重点实验室 |
| 通讯作者 | Zhang, Zhigang; Li, Jinhua |
| 作者单位 | 1.Chinese Acad Sci, Inst Geol & Geophys, Key Lab Deep Petr Intelligent Explorat & Dev, Beijing, Peoples R China 2.Chinese Acad Sci, CAS Key Lab Mineral & Metallogeny, Guangzhou Inst Geochem, Guangzhou, Peoples R China 3.Thermo Fisher Sci, Shanghai Nanoport, Shanghai, Peoples R China 4.Chinese Acad Sci, Inst Geol & Geophys, State Key Lab Lithospher & Environm Coevolut, Beijing, Peoples R China 5.Univ Chinese Acad Sci, Coll Earth & Planetary Sci, Beijing, Peoples R China 6.Chinese Acad Sci, Inst Geol & Geophys, Key Lab Earth & Planetary Phys, Beijing, Peoples R China 7.Southern Marine Sci & Engn Guangdong Lab, Zhuhai, Peoples R China 8.Qingdao Marine Sci & Technol Ctr, Lab Marine Geol, Qingdao, Peoples R China |
| 推荐引用方式 GB/T 7714 | Zhang, Chaoqun,Niu, Xiaoguang,Gu, Lixin,et al. Atomic-Level Structural Responses of Chang'e-5 Ilmenite to Space Weathering[J]. JOURNAL OF GEOPHYSICAL RESEARCH-PLANETS,2024,129(11):10. |
| APA | Zhang, Chaoqun.,Niu, Xiaoguang.,Gu, Lixin.,Tang, Xu.,Chen, Yi.,...&Li, Jinhua.(2024).Atomic-Level Structural Responses of Chang'e-5 Ilmenite to Space Weathering.JOURNAL OF GEOPHYSICAL RESEARCH-PLANETS,129(11),10. |
| MLA | Zhang, Chaoqun,et al."Atomic-Level Structural Responses of Chang'e-5 Ilmenite to Space Weathering".JOURNAL OF GEOPHYSICAL RESEARCH-PLANETS 129.11(2024):10. |
入库方式： OAI收割
来源：广州地球化学研究所
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