本文關鍵詞： “嫦娥三號” 著陸區(qū) 下伏玄武巖 單元劃分 充填過程　出處：《地學前緣》2014年06期 　論文類型：期刊論文

【摘要】：月球在演化過程中,幾乎沒有經歷過大氣或流水等地質作用,在全月范圍覆蓋有表層土壤,極少有下伏巖石裸露。經過數十億年的空間風化作用,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。了解月球巖石的關鍵是透過干擾的月壤看到下伏巖石的信息。通過對"嫦娥三號"著陸區(qū)低成熟度撞擊坑坑底和坑壁位置的光譜分析,進行月壤下伏玄武巖的組分識別、單元劃分并根據地形數據計算其厚度。具體內容包括:(1)基于LISM多光譜遙感數據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)的地質單元之間的關系。結果表明,研究區(qū)至少發(fā)生了6期玄武巖溢出充填活動,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可能分布于整個研究區(qū),在南部區(qū)域被前3期玄武巖單元覆蓋,沒有暴露在月表,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質量分數變化較大,從最低的1.26%到最高的6.65%,而Fe質量分數相對變化較小,在16.31%到17.57%。最后,玄武巖填充時間與其Fe、Ti元素含量之間有一定的聯系,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】： 山東大學空間科學研究院;山東省光學天文與日地空間環(huán)境重點實驗室;中國科學院月球與深空探測重點實驗室;
【基金】：國家自然科學基金項目(11003012,U1231103,41373068,41473065) 山東省自然科學基金項目(ZR2011AQ001) 中國科學院重點部署項目(KGZD-EW-603) 中國科學院月球與深空探測重點實驗室開放基金項目 山東大學威海校區(qū)�？蒲袉踊痦椖�
【分類號】：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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