江西相山火山-侵入杂岩体的岩性主要为上侏罗统打鼓顶组、鹅湖岭组酸性、中酸性火山熔岩、陆相碎屑沉积岩,局部夹火山碎屑岩。火山活动具有两个明显的旋回:第一旋回呈裂隙式喷溢,形成中酸性流纹英安岩;第二旋回呈中心式喷溢—侵出,形成一套酸性火山熔岩碎斑熔岩。碎斑熔岩又可 The lithology of Xiangshan volcanic-intrusive complex in Jiangxi Province is mainly composed of the Upper Jurassic Taigu Formation, the Ehulhuling Formation, moderately acidic volcanic lava, terrestrial clastic sedimentary rocks, and local volcanic clastic rocks. Volcanic activity has two distinct cycles: the first cycle presents a fissure spurting, forming a medium-acidic stream of briquette; the second cycle presents a central spurt-out and invades a set of acid volcanic lava spot lava. Chopsticks lava can be