中国东南部晚中生代花岗质火山-侵入杂岩岩石成因中幔源岩浆作用贡献及其时空差异

幔源岩浆的物质和能量贡献对花岗质岩浆在岩浆房和岩浆通道中的复杂演化具有重要影响。本申请项目瞄准岩浆岩岩石学研究的这一前沿科学问题，以中国东南部晚中生代花岗质火山-侵入杂岩为主要研究对象，重点关注幔源物质贡献的形式、程度及时间性-空间性的差异变化，对4个典型火山-侵入杂岩体开展野外地质、岩石学、高精度年代学和岩石地球化学等研究，揭示火山-侵入杂岩内部不同岩石单元的形成时序和成因联系，阐明岩浆相互作用规模和频率、岩浆通量的演变制约下岩浆在岩浆房和岩浆通道的演化过程和机制，在火山-侵入杂岩成因的相关理论研究等方面取得重要成果。同时，通过对火山-侵入杂岩这一联系火山岩和侵入岩的特殊岩石组合的深入研究，进一步加深对中国东南部晚中生代区域构造-岩浆演化规律的认识，并为提升我国花岗岩研究的基础理论水平做出贡献。

Mantle-derived contribution of both material and energy play an important role in complex granitic magma processes in magma reservoirs and conduits. This project will focus on the key frontier in igneous petrological research, by detailed studies of Late Mesozoic granitic volcanic-intrusive complexes, paying attention to the pattern, degree and temporal-spatial differences of mantle-derived material contribution in petrogenesis. Four typical granitic volcanic-intrusive complexes will be conducted detailed studies of field observations, petrography, high-precision geochronology and petrogeochemistry. These new data will be used to determine formation timing sequence and petrogenesis connection of different rock types within individual complex, and reveal magma process and mechanism in magma reservoirs and conduits controlled by scale and frequency of magmatic interaction, intending to make important achievements in petrogenesis of volcanic-intrusive complexes. The results will improve the understanding of the tectono-magmatic evolution of SE China during Late Mesozoic, and provide critical insights into basic theory level of granite research.