Fluid released during the high pressure and ultrahigh pressure metamorphism plays an important role in the evolution of subducted slab and may connect directly with igneousactivity in island arcs.
在高压超高压变质作用过程中所释放的流体对俯冲板块的演化起着重要作用，与岛弧岩浆活动有着直接联系。
2
The activity of igneous rocks mainly concentrates in Neogene and Quaternary.
火成岩活动主要集中在晚第三纪和第四纪。
3
Such changes can occur through the activity of fluids in the Earth and movement of igneous bodies or regional tectonic activity.