本文關(guān)鍵詞： “嫦娥三號(hào)” 著陸區(qū) 下伏玄武巖 單元?jiǎng)澐?充填過(guò)程　出處：《地學(xué)前緣》2014年06期 　論文類型：期刊論文

【摘要】：月球在演化過(guò)程中,幾乎沒(méi)有經(jīng)歷過(guò)大氣或流水等地質(zhì)作用,在全月范圍覆蓋有表層土壤,極少有下伏巖石裸露。經(jīng)過(guò)數(shù)十億年的空間風(fēng)化作用,月海月壤光譜特性與下伏玄武巖有很大差別。因此,通過(guò)常規(guī)遙感方法不能探知下伏玄武巖的特性。了解月球巖石的關(guān)鍵是透過(guò)干擾的月壤看到下伏巖石的信息。通過(guò)對(duì)"嫦娥三號(hào)"著陸區(qū)低成熟度撞擊坑坑底和坑壁位置的光譜分析,進(jìn)行月壤下伏玄武巖的組分識(shí)別、單元?jiǎng)澐植⒏鶕?jù)地形數(shù)據(jù)計(jì)算其厚度。具體內(nèi)容包括:(1)基于LISM多光譜遙感數(shù)據(jù)的撞擊坑篩選與光譜信息提取;(2)玄武巖單元類型劃分和厚度反演,建立離散撞擊坑與連續(xù)的地質(zhì)單元之間的關(guān)系。結(jié)果表明,研究區(qū)至少發(fā)生了6期玄武巖溢出充填活動(dòng),由新到老可以依次劃分出6種玄武巖單元。其中單元1、2和3的厚度從南向北逐漸減小最后消失;單元4、5和6可能分布于整個(gè)研究區(qū),在南部區(qū)域被前3期玄武巖單元覆蓋,沒(méi)有暴露在月表,在北部區(qū)域則位于下伏玄武巖的頂層。從元素含量上看,不同玄武巖單元Ti質(zhì)量分?jǐn)?shù)變化較大,從最低的1.26%到最高的6.65%,而Fe質(zhì)量分?jǐn)?shù)相對(duì)變化較小,在16.31%到17.57%。最后,玄武巖填充時(shí)間與其Fe、Ti元素含量之間有一定的聯(lián)系,玄武巖年代越年輕,其中的Fe和Ti元素更加富集。
[Abstract]:During the evolution of the moon, there were few geological processes such as the atmosphere or income, covering the surface soil throughout the moon, and very few underlying rocks exposed. After billions of years of spatial weathering. The spectral characteristics of lunar soil are very different from those of underlying basalt. The characteristics of underlying basalt can not be detected by conventional remote sensing. The key to understanding lunar rocks is to see the information of underlying rocks through disturbed lunar soil. Spectral analysis of low maturity crater bottom and crater wall location in landing area. The components of the basalt under lunar soil are identified, the units are divided and the thickness is calculated according to the topographic data. The specific contents include: 1) screening of impact craters and extraction of spectral information based on LISM multispectral remote sensing data; The relationship between discrete impact craters and continuous geological units is established. The results show that at least six periods of basalt spillage and filling occurred in the study area. From new to old, six basalt units can be divided in turn, in which the thickness of units 1 / 2 and 3 gradually decreases from south to north and then disappears. Units 4, 5 and 6 may be distributed throughout the study area, covered by the previous three basalt units in the southern region, not exposed to the monthly surface, and located at the top of the underlying basalt in the northern region. The Ti mass fraction of different basalt units varies greatly, from the lowest 1.26% to the highest 6.65, while the Fe mass fraction is relatively small, ranging from 16.31% to 17.577.Finally. There is a certain relationship between the filling time of basalt and the content of Fe and Ti in basalt. The younger the age of basalt is, the more Fe and Ti are enriched.
【作者單位】： 山東大學(xué)空間科學(xué)研究院;山東省光學(xué)天文與日地空間環(huán)境重點(diǎn)實(shí)驗(yàn)室;中國(guó)科學(xué)院月球與深空探測(cè)重點(diǎn)實(shí)驗(yàn)室;
【基金】：國(guó)家自然科學(xué)基金項(xiàng)目(11003012,U1231103,41373068,41473065) 山東省自然科學(xué)基金項(xiàng)目(ZR2011AQ001) 中國(guó)科學(xué)院重點(diǎn)部署項(xiàng)目(KGZD-EW-603) 中國(guó)科學(xué)院月球與深空探測(cè)重點(diǎn)實(shí)驗(yàn)室開放基金項(xiàng)目 山東大學(xué)威海校區(qū)校科研啟動(dòng)基金項(xiàng)目
【分類號(hào)】：P184.5
【正文快照】： LI Bo1,LING Zongcheng1,2,*,ZHANG Jiang1,WU Zhongchen1,NI Yuheng1,CHEN Jian11.Shandong Provincial Key Laboratory of Optical Astronomy and Solar-Terrestiral Environment;Insitute of Space Sciences,ShandongUniversity,Weihai 264209,China2.Key Laboratory of Lu

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4 何姝s，

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