本项目将重点研究斜长质（Th-poor feldspathic breccias ）、铁镁质（Th-rich mafic breccias）和混合型（mingled breccias）月球陨石的基础矿物岩石学，利用高分辨率高精度的离子探针测定其中富锆矿物和磷酸盐的U-Pb年龄，确定月壳形成的年龄和持续时间，探索后期变质作用对结晶年龄的影响；在此基础上进一步分析高地斜长岩和铁镁质岩石中主要成岩矿物的微量元素组成，探讨其经历的岩浆分异过程和成因机制。本项目试图要解决的科学问题是：月壳是何时开始形成的？经历了多长时间完成？富镁岩套在月壳形成过程中所处的地位、物质来源、和成因机制？后期热变质和冲击变质作用如何改造原始月壳？

We will analyze and study lunar meteorites using optical petrography, electron microprobe analysis, and secondary ion mass spectrometry. We will perform in situ ion microprobe U-Pb dating on Zr-rich minerals and phosphates found in these lunar meteorites. We will integrate compositional, petrologic, and isotopic data obtained on lunar feldspathic and mafic meteorites. Using a variety of data, we will characterize the formation time and duration of the lunar crust and model geological processes that formed them. The ultimate goals of this project are seeking the solutions of timing and duration of the lunar crust formation, the petrogenesis of high-magnesium suites, and the modification of the primitive lunar crust due to subsequent thermal and impact processes.