月面岩石的地球化学分类研究

Rock types and their distribution on the surface of the moon is an important criterion of understanding on this shell chemical evolution, and the scientific nature and rationality of moon rock geochemical classification is the key to this study. As the moon is so far away from the earth, the classification of moon rock is not as same as earth, depending on using data of remote sensing and APLLO and LUNA the petrological and geochemical analysis, and the results of the quantitative inversion is directly affected by the data characteristics of remote sensing and processing method, therefore to determine the specific classification standard in the process of specific study of classification in the whole study is the most important factor to determine the study results. This project intends to use the data detected by China's lunar exploration project to study the classification of lunar rocks. Its main goal is according to the characteristics of the interference imaging spectrometer of chang 'e 1, of the data of chang 'e 1,chang 'e-2, gamma and X-ray spectrometer, to Inversion Fe, Ti and Mg, Al and Th elements and pyroxene mineral, to study the petro-geochemical classification of lunar rocks on the basis of the inversion and the petro-geochemical-data of the sample of lunar rock, to set up the judgment standard of rock type of lunar surface, to complete lithologic map of lunar surface, to set up dynamical evolution model of lunar magma.

月球表面岩石类型及其分布是理解月壳化学演化的重要判据，而月面岩石地球化学分类的科学性与合理性是这一方面研究的关键。月球因为距离遥远，因此与地球上岩石的分类研究不尽相同，其主要是利用遥感探测数据结合APLLO和LUNA样品的岩石学与地球化学分析数据来进行，而遥感探测数据的特点以及处理方法将直接影响定量反演的结果，因此在具体的分类研究过程中确定具体的分类标准在整个研究中是决定研究结果的最为重要的因素。本项目拟利用我国月球探测工程的探测数据，开展月面岩石分类的研究，其主要目标是针对嫦娥一号干涉成像光谱仪以及嫦娥一号、嫦娥二号伽马和X谱仪数据的特点，开展Fe、Ti、Mg、Al 和Th等元素以及辉石等矿物的反演，在元素与矿物反演的基础上，结合月球样品的岩石地球化学数据，进行月面岩石的岩石地球化学分类研究，建立月面岩石类型的判别标准，完成月面岩石类型分布图的填制，建立月球岩浆演化的动力学模型。

项目完成了月球高地月壤的模拟工作，并进行了光谱测试和分析。利用模拟样品的测试结果以及国际上现有的样品光谱分析结果，针对我国嫦娥一号干涉成像光谱仪以及嫦娥一号、嫦娥二号伽马和X射线谱仪数据的特点，完成了月表Fe、Ti、Mg、Al 和Th等元素以及月表主要矿物的反演，在元素与矿物反演的基础上，结合模拟样品和已有月球样品的岩石地球化学数据，完成了月面岩石的岩石地球化学分类，建立月面岩石类型的判别标准，完成了月面岩石类型分布图的填制，对深入认识月球表面岩石成岩和地质演化历史研究提供了重要的参考依据。