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与构造环境密切相关的氧逸度是控制地幔流体成分的最根本因素CO2和H2O为大多数地幔流体的主要成分。俯冲板块的脱水脱气作用、地幔原始残留挥发份及地幔部分熔融作用是地幔流体的主要来源。
The oxygen fugacity closely related to the tectonic setting is the most fundamental factor controlling the mantle fluid composition. CO2 and H2O are the main components of most mantle fluids. Dehydration and degassing of the subducted plate, the residual volatiles of the original mantle and the partial melting of the mantle are the main sources of mantle fluid.