摘要: |
“嫦娥4号”预计在月球背面的冯·卡门(Von Kármán)撞击坑着陆,为近距离研究月球最大和最古老的南极—艾肯(South Pole-Aitken)盆地的形成和演化提供了机会。综合利用多种光谱数据,本研究分析了冯·卡门撞击坑及其周边地区TiO2和FeO的含量变化,以及铁镁质矿物的分布情况,并推断了其主要的岩石类型。研究结果表明:冯·卡门撞击坑内部贫TiO2(约1.5~2.5 wt%)富FeO(约12~16 wt%),主要岩石类型为低钛玄武岩。撞击坑以外的地层则以苏长岩质物质(低钙辉石)为主,并含有约1 wt%的TiO2和10 wt%的FeO。此外,冯·卡门撞击坑外的南部局fFf), and infilled by low-Ti basalts. The materials outside the crater are dominated by noritic materials (Low-Ca pyroxene) with abundance of TiO2(~1 wt%)and FeO(~10 wt%). In addition, some plagioclase-rich layers are also exposed on the southern region outside the Von Kármán crater. |
关键词: 嫦娥4号 冯·卡门撞击坑 成分 |
DOI:10.15982/j.issn.2095-7777.2018.01.009 |
分类号: |
基金项目:澳门科学技术发展基金(119/2017/A3,103/2017/A和075/2014/A2) |
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Compositional Studies of the Von Kármán Crater |
ZHANG Xunyu1, XU Tianyi1, LI Cui2
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1.Institute of Space Science, Macao University of Science and Technology, Macau 00853, China;2.College of Geoexploration Science and Technology, Jilin University, Changchun 130026, China
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Abstract: |
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Key words: Chang'e-4 mission Von Kármán crater composition |