针对"华南陆缘晚中生代典型的俯冲岩浆弧型岩浆岩残留在哪里？"这一科学问题，本项目拟选择邻近俯冲带的东海陆架到南海北部这一海陆结合部，在前一个基金项目(No.41272218)等工作基础上，依托课题组现有约95口井钻遇岩石样品(前新生代)并辅以福建沿海部分样品，开展以岩浆岩为主的岩石学、锆石U-Pb年代学、全岩Sr-Nd和锆石O-Hf同位素及其它地球化学等对比研究分析，以取得这一岩浆岩薄弱研究区晚中生代岩浆弧形成演变的关键记录，形成古太平洋板块俯冲和东亚晚中生代大陆边缘汇聚体制的关键约束，为深化我国东南海域中生界盆地原型及油气资源潜力认识提供重要依据。

This project, aimed at "where are located the typical Late-Mesozoic arc-subduction-related igneous rocks along the continental margin of South China", is designed regionally mainly from the continental shelf areas more close to the subduction zone from SW East China Sea to N South China Sea combined with Fujian few coastal area to focus on studies of Pre-Cenozoic igneous rocks from 95 boreholes that already collected on the basis of former NSFC No.41272218 and others. This project comes to stress both integrated and comparative studies of igneous rocks from the different areas on petrology, Sr–Nd bulk-rock isotopes, zircon U–Pb geochronology, O-Hf isotopes, Ti-temperature, and other geochemical analyses in order to obtain key records of formation and evolution of Late-Mesozoic magmatic arc in these areas previously lack of studies on Mesozoic igneous rocks. The results from this project will no doubt add key constraints on evolution of Late Mesozoic convergent continental margin in East Asia driven by paleo-Pacific slab subduction, together provide unusual information for understanding of Mesozoic basin prototypes and resource potentials from East to South China Seas.