| 嫦娥五号返回月壤微观形貌特征及其对太空风化的指示意义 |
| |
| 引用本文： | 顾铱,孙继尧,肖倩,李毅恒,王心怡,曹克楠,刘亦婷,何琦,杨浩,陈倩,杨金昆,宋文磊,宗克清,张文,巫翔,胡兆初,肖龙,佘振兵,汪在聪.嫦娥五号返回月壤微观形貌特征及其对太空风化的指示意义[J].地球科学,2022,47(11):4145-4160. |
| |
| 作者姓名： | 顾铱 孙继尧 肖倩 李毅恒 王心怡 曹克楠 刘亦婷 何琦 杨浩 陈倩 杨金昆 宋文磊 宗克清 张文 巫翔 胡兆初 肖龙 佘振兵 汪在聪 |
| |
| 作者单位： | 1.中国地质大学地球科学学院, 湖北武汉 430074 |
| |
| 基金项目： | 国家航天局民用航天技术预研究项目D020205中国地质大学生物地质与环境地质国家重点实验室GBL12101 |
| |
| 摘 要： | 研究识别嫦娥五号返回月壤样品颗粒的类型、含量、形貌、结构和成分特征，可为嫦娥五号着陆区月壤的成因与月球表面演化过程提供关键科学依据.利用扫描电镜-能谱仪、矿物自动定量分析系统和显微激光拉曼光谱仪对嫦娥五号表取月壤样品CE5C0400（YJFM00403）进行了系统研究，发现月壤颗粒组成多样，包括斜长石、单斜辉石和橄榄石等矿物、玄武岩碎屑、黏结物和玻璃球.颗粒表面和内部微观结构复杂，呈现各种破碎、表面附着堆积、微撞击坑、溅射物等形式的微米-纳米级的形貌特征.嫦娥五号月壤的微形貌特征记录了以微陨石撞击为主导的复杂太空风化过程:一方面反复的撞击作用使月壤颗粒破碎、粒度变细，另一方面撞击引发的局部熔融又使颗粒发生胶结，同时伴随含铁矿物分解形成微-纳米级单质铁颗粒.上述过程反复进行，导致月壤颗粒大小和物相组成复杂多变.
|
| 关 键 词： | 嫦娥五号 月海玄武岩 玻璃球 黏结物 微撞击坑 微陨石 |
| 收稿时间： | 2022-09-30 |
Morphology of Lunar Soil Returned by Chang'E-5 Mission and Implications for Space Weathering |
| |
| Abstract: | Morphologic, structural and compositional characteristics of the lunar soil returned by Chang'E-5 provide invaluable insights into the origin of the lunar soil and the evolution history of the Moon' s surface. Using scanning electron microscopy-energy dispersive spectrometer and micro-Raman spectrometer, the scooped lunar soil sample CE5C0400 (YJFM00403) was systematically investigated. The lunar soil consists of a variety of particles, including single minerals such as plagioclase, clinopyroxene and olivine, basaltic clasts, agglutinates and glass beads. The surface features and microstructures of the particles are characterized by diverse, micrometer to nanometer scale morphological features in the form of fragmentation, surface attachment and microcratered and sputtered structures. The morphological features of Chang'E-5 lunar soil have recorded a wealth of information about the complex processes of space weathering dominated by micrometeorite impacts. Repeated impacts led to the fragmentation and fining of lunar soil particles, whereas impact-induced local melting welded the particles, accompanied by the formation of micrometer to submicrometer metal spheres through decomposition of iron-bearing minerals. Repeated cycles of these complex processes thus have resulted in significant changes in the particle sizes and mineral components of the lunar soil. |
| |
| Keywords: | |
|
| 点击此处可从《地球科学》浏览原始摘要信息 |
|
点击此处可从《地球科学》下载全文 |
|
