H-O isotopes constitute reflects the characteristics of magma flow and metamorphic water interfusion.
石英的氢氧同位素组成反映出岩浆流体与变质水混入溶液特征。
The low velocity layer possibly is formed by metamorphic water.
壳内低速层可能是由变质水造成的。
The evolutionary feature of the water activity shows that the metamorphic fluids may have played a buffering role in the metamorphic reaction temperature during the metamorphic stages.
水活度的演化特征表明，变质流体在变质作用过程中，对变质反应温度起着一定的缓冲作用。
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