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地壳中流体在变质作用过程中具有重要的地位。流体不仅是一种质量运输的介质,更是反应的催化剂或反应物。在一定程度上,变质反应中矿物组合的更替难易度和反应进程主要取决于流体的参与,特别是退变质过程中,流体通过溶解-迁移-沉淀机制使得变质矿物共生组合发生改造。流体与岩石相互作用的研究也进一步的表明反应本身促进了裂隙的发生,即反应促进了岩石渗透率,增加了流体与岩石的接触面积,使得流体与岩石反应界面的反应更加快速与完全。同时,对岩石的力学性质也有重要的影响,诸如岩石的流变学性质及其应变性质,对地壳变形、断裂、岩浆作用、变质作用及成矿作用等有重要的意义。
The fluid in the crust plays an important role in metamorphism. Fluid is not only a mass transport medium, but also the catalyst or reactant. To a certain extent, the ease of replacement of mineral assemblages in the metamorphic reaction and the progress of the reaction mainly depend on the fluid participation. In particular, during the process of retrogressive metamorphism, the fluids undergo transformation through the dissolution-migration-sedimentation mechanism to make the metamorphic mineral assemblages. The interaction between fluid and rock further indicates that the reaction itself promotes the occurrence of fissures, that is, the reaction promotes the permeability of rock and increases the contact area between fluid and rock, which makes the reaction between fluid and rock reaction interface more rapid and complete. At the same time, it also has an important influence on the mechanical properties of rocks, such as the rheological properties and the strain properties of rocks, which have important meanings on crustal deformation, fracture, magmatism, metamorphism and mineralization.