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一艾肯(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TiO_2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TiO_2(约1.5～2.5wt%)富FeO(约12～16wt%),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TiO_2和10wt%的FeO。此外,冯·卡门撞击坑外的南部局部区域还出露有富斜长石的地层。希望本研究可为"嫦娥4号"未来的探测任务提供更多的技术支持。
Chang＇e-4 mission is expected to land within the Von Kármán crater on the lunar far side and provides an opportunity to in situ study the South Pole-Aitken basin which is the largest and oldest recognized impact basin on the Moon.Chemical compounds（Ti02 and FeO） and mineralogical composition of the Von Kármán crater are analyzed based on several spectral data, which aims to provide more technical support for the future exploration in the Chang＇e-4 mission. The Von Kármán crater is TiO2-pool（about 1.5-2.5 wt%）, FeO-rich（about 12-16 wt%）, and infilled by low-Ti basalts. The materials outside the crater are dominated by noritic materials（Low-Ca pyroxene） with abundance of Ti02（-1 wt%）and FeO（-10 wt%）. In addition, some plagioclase-rich layers are also exposed on the southern region outside the Von Kármán crater.
作者
张迅与
徐天奕
李翠
ZHANG Xunyul;XU Tianyi;LI Cui(Institute of Space Science, Macao University of Science and Technology, Macao 00853, China;College of Geoexploration Science and Technology, Jilin University, Changchun 130026, China)
出处
《深空探测学报》
2018年第1期66-70,共5页
Journal Of Deep Space Exploration
基金
澳门科学技术发展基金(119/2017/A3
103/2017/A和075/2014/A2)
关键词
嫦娥4号
冯·卡门撞击坑
成分
Chang＇e-4 mission
Von Karman crater
composition
