月球东海盆地的矿物光谱特征及遥感探测

发布时间：2018-09-07 12:03

【摘要】：东海盆地是月球上最年轻的大型撞击盆地之一,其地形地貌和矿物与岩石类型分布将有助于我们深入理解月球撞击盆地形成过程和地质演化历史。LOLA高程数据揭示东海盆地为保存完好的多环撞击盆地。基于月球矿物绘图仪(M3)反射率数据,在东海盆地发现了尖晶石、辉石、结晶斜长石、橄榄石等矿物,采用修正高斯模型(MGM)进行混合矿物光谱分解获取了矿物端员,利用光谱角分类方法(SAM)作出了Maunder撞击坑的主要矿物分布图。发现的纯结晶斜长石矿物与最近其他月球探测(如Kaguya)相吻合,为月球岩浆洋模型提供了新约束条件。在Lowell撞击坑中央峰发现尖晶石分布,并利用多光谱成像仪(MI)数据进行了验证;利用MGM方法,在Maunder建造上发现结晶斜长石与尖晶石的混合矿物,我们通过分析认为东海盆地的尖晶石在外卢克山脉上可能有更广泛的分布。
[Abstract]:The East China Sea Basin is one of the youngest large impact basins on the moon. The topographic, geomorphological and mineral and rock types distribution will help us to understand the formation process and geological evolution history of lunar impact basin. The Lola elevation data reveal that the East China Sea basin is a well-preserved multi-ring impact basin. Based on the reflectance data of lunar mineral plotter (M3), spinel, pyroxene, crystal plagioclase and olivine were found in the East China Sea basin. The mineral end members were obtained by spectral decomposition of mixed minerals by modified Gao Si model (MGM). The main mineral distribution map of Maunder impact crater was made by using spectral angle classification method (SAM). The discovered pure crystalline plagioclase minerals coincide with other recent lunar exploration (such as Kaguya) and provide a new constraint for the lunar magmatic ocean model. Spinel distribution was found in the central peak of Lowell impact crater and verified by (MI) data of multispectral imager, and mixed minerals of crystal plagioclase and spinel were found on Maunder formation by MGM method. We conclude that spinel in the East China Sea basin may be more widely distributed in the Lu Ke Mountains.
【作者单位】：山东大学空间科学研究院;山东省光学天文与日地空间环境重点实验室;中国科学院月球与深空探测重点实验室;中国科学院地球化学研究所;
【基金】：国家自然科学基金项目(11003012,U1231103,41373068,41473065) 山东省自然科学基金项目(ZR2011AQ001) 中国科学院月球与深空探测重点实验室开放基金项目山东大学自主创新基金项目(2013ZRQP004) 山东大学(威海)优秀研究生科研创新基金项目(yjs13026)
【分类号】：P184.5

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