岩石圈地幔演化和大陆深部动力学过程是当前国际地质学研究热点，金刚石及其包裹体是研究岩石圈地幔环境及变化最直接的探针之一。本项目将贵州及湖南砂矿金刚石矿物晶体生长过程及其包裹体和扬子克拉通岩石圈地幔演化联系起来，采用激光拉曼光谱、激光烧蚀等离子发射光谱（LA-ICPMS）和二次离子探针（SIMS）等原位测试技术对金刚石生长环带成分、温压条件、碳同位素（原位），石榴石和单斜辉石包裹体Sm-Nd，Lu-Hf同位素，硫化物Re-Os同位素年龄进行分析，并与金伯利岩、玄武岩捕获的地幔和地壳包体比较，试图认识扬子克拉通岩石圈地幔在钻石形成过程、减薄前后的性质及变化，从而探索扬子克拉通大陆深部动力学过程与岩石圈地幔演化的联系。项目对了解大陆、超大陆周期性聚散机制和岩石圈内部不同圈层之间相互作用、时空演化，揭示扬子克拉通在Rodinia超级大陆的位置以及扬子克拉通原生金刚石找矿等均有较重要的科学意义。

The subcontinental lithospheric mantle evolution and the complex dynamic processes inside are hot topics in the currently international geological study, while diamonds and their inclusions provide the most useful clues for understanding the deep lithospheric processes. This project will relate the internal crystal growth and the inclusions of alluvial diamonds from Guizhou and Hunan to the lithospheric mantle evolution beneath the Yangtze Craton, and apply in-situ analytical techniques including Laser Raman Spectroscopy (LRS), Laser Ablation Inductively Coupled Plasma Mass Spectrometry (LA-ICP-MS), and Secondary Ion Mass Spectroscopy (SIMS), etc. to analyze diamonds' compositions, temperature-pressure condition and carbon isotopes（in situ） at various growth zones, the Sm-Nd, Lu-Hf isotopes of garnet and clinopyroxene inclusions, as well as the Re-Os isotopes and their dating of sulfide inclusions. The results, together with those aquired from mantle and crustal xenoliths in kimberlites and basalts, will contribute to constraining the characteristics and evolution of subcontinental lithospheric mantle beneath the Yangtze Craton during diamonds' crystallization and before and after lithosphere thinning, and therefore contribute to discussing the relationship between deep dynamic processes and evolution of subcontinental lithospheric mantle. This project is scientifically significant for understanding the periodic conjunction-breakup mechanism of continent and supercontinent, and the role of the Yangtze Craton in Rodinia supercontinent, as well as for prospecting primary diamond deposits in the Yangtze Craton region.