关键词: 花岗岩, 火山岩, 构造环境, 壳—幔相互作用, 晶体—熔体分离

Abstract: The granitic volcanic-plutonic complexes in southeastern China constitute a natural laboratory for investigating the
genetic links between volcanic and plutonic rocks, crust-mantle interaction, tectonic geodynamic settings, and crystal-melt separation. Over the past half century, Academician Dezi Wang and Professor Xinmin Zhou led a research team in carrying out systematic studies, through which they proposed the concept of granitic volcanic-plutonic complexes. Using subvolcanic granites as the key link, they examined their genesis and distribution patterns in terms of temporal, space, and source affinities, and established a set of geological and geochemical discriminant criteria. On the basis of integrated studies of petrology, tectonics, sedimentary basins, and geophysics, they proposed a tectono-magmatic model attributing the origin of the granitic volcanicplutonic complexes in southeastern China to the combined effects of oceanic slab subduction, basaltic magma underplating, and partial melting of the middle to lower crust. In terms of detailed magmatic crystallization processes, they identified and revealed a series of key evidences for magma recharge, crystal accumulation, mush rejuvenation, and melt extraction, thereby further elucidating the magmatic evolution of granitic volcanic-plutonic complexes, as well as their relationship to the vertical compositional differentiation of the continental crust. 

Key words: granite, volcanic rocks, tectonic setting, crust-mantle interaction, crystal-melt separation