Concepts of metamorphism, metamorphicreaction, prograde and retro - metamorphisms.
变质岩的一般概念、变质反应、进变质和退变质。
2
The evolutionary feature of the water activity shows that the metamorphic fluids may have played a buffering role in the metamorphicreaction 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。
3
The study is about the characteristics of structure, assemblage of metamorphic rocks and relationship among distribution, assemblage and reaction of minerals.