摘要
月球玄武岩的矿物组成反映了源区的化学成分和岩浆的结晶环境.了解月海玄武岩的矿物组成对研究月球岩浆演化具有重要意义.选择澄海为研究区,综合利用光谱、地形、元素等多源遥感数据将澄海划分为55个地质单元.基于月球矿物制图仪(Moon Mineralogy Mapper, M^3)数据,提取84条新鲜撞击坑光谱曲线,计算吸收中心波长、波段面积比等光谱参数.通过分析光谱吸收特征,获得澄海玄武岩镁铁质矿物的空间变化特征.研究结果表明,澄海玄武岩镁铁质矿物主要为高钙单斜辉石.澄海中部和南部地质单元具有较低的橄榄石/辉石比,东部和西部地质单元具有较高的橄榄石/辉石比.从东、西部到中部区域,橄榄石/辉石比例逐渐降低.
The mineral composition of lunar basalts reflects the composition of the mantle sources and their crystallization. Understanding the mineral composition of lunar basalts is important for comprehending the lunar magmatic evolution. In this paper, Mare Serenitatis was mapped and characterized into 55 basaltic units using the multi-source remote sensing data such as spectrum, topography, and element abundance, etc. Based on the Moon Mineralogy Mapper(M^3) hyperspectral data, we extracted 84 spectra of fresh craters. Spectral parameters such as absorption centers and absorption band area ratios were obtained through data processing, to acquire the spatial variation of mafic minerals in Mare Serenitatis, which are dominated by the high-calcium clinopyroxene. The eastern and western parts of Mare Serenitatis have higher olivine/pyroxene ratios than the middle part. From the east and west to the middle region, the proportion of olivine/pyroxene gradually decreases.
作者
蔡伟
李少林
卢瑜
吴昀昭
CAI Wei;LI Shao-lin;LU Yu;WU Yun-zhao(School of Geographic and Oceanographic Sciences,Nanjing University,Nanjing 210023;Key Laboratory of Radiometric Calibration and Validation for Environmental Satellites,National Satellite Meteorological Center,China Meteorological Administration,Beijing 100081;Key Laboratory of Planetary Sciences,Purple Mountain Observatory,Chinese Academy of Sciences,Nanjing 210034)
出处
《天文学报》
CSCD
北大核心
2018年第6期51-62,共12页
Acta Astronomica Sinica
基金
国家重点研发计划资助(2018YFB0504704)
中国气象局中国遥感卫星辐射测量
定标重点开放实验室开放基金资助
关键词
澄海
玄武岩
光谱
矿物成分
M^3
mare serenitatis
basaltic unit
spectrum
mineralogy composition
M^3
