本项目拟以陆内深部地幔演化与深部过程为核心科学问题，以青藏高原中北部碰撞后新生代幔源岩浆岩及地幔包体为重点研究对象，通过系统岩石学、矿物学、年代学、元素和Nd-Sr-Pb-Os-Mg-B-O-Hf同位素地球化学研究，结合最新的地质、岩石、古高度和地球物理资料，揭示岩石成因、地幔组成及富集时间与机制、“过渡性”上地幔的性质及形成机制和地幔转换带（MTZ）高速异常体性质及起源，阐明地幔熔融的动力学机制及其与高原陆内变形乃至高原隆升、扩展的关联，深入剖析陆内多层圈相互作用过程，建立青藏高原中北部新生代演化的动力学模型，揭示陆内变形的深部动力学机制，突破经典板块构造理论，推动大陆动力学理论的发展。通过4年项目实施，拟发表国际SCI论文15-20篇，取得重要原创性成果，促进青年人才成长，建立一支具有重要国际影响力的青藏高原地质研究团队。

The core scientific question to be addressed in this project is intracontinental mantle evolution and deep processes. In this project, post-collisional Cenozoic mantle-derived magmatic rocks and associated mantle xenoliths in central and northern Tibet will be subject to detailed investigations in the field. Subsequent laboratory studies on mineralogy, petrology, chronology, and major, trace and Nd-Sr-Pb-Os-Mg-B-O-Hf isotope geochemistry, combined with the newest geological, petrological, paleoelevation and geophysical data, are expected to: (1) unveil the genesis of these magmatic rocks; (2) determine mantle constituents, and time and mechanism of mantle enrichment; (3) reveal the properties of transition uppermost mantle and high-velocity anomalous body of mantle transition zone (MTZ), and related formation mechanism; (4) clarify the relationships between dynamic mechanism of mantle melting and intrcontimental deformation and surface uplift and growth of the Tibetan Plateau; (5) discuss the interaction between different layers, establish a geodynamic framework for future research on Cenozoic evolution, and clarify the deep geodynamic mechanism of intercontinental deformation, which provide data for the breakthrough on plate tectonic theory and the development of continental dynamic theory. The project will provide significant scientific outputs throughout its 4-year lifespan, including the publication of 15-20 international SCI papers, acquiring important original achievements, promoting the growth of talented young scientists, and establishing a Tibetan Plateau geological research group with significant international influence.