过渡带的矿物具有非常大的储水能力,俯冲过程可能会输运大量的水到过渡带中(Hirschmann,2006),包括超级含水相B在内的一系列的稠密的含水的硅酸镁相被认为是输运水的主要载体,超级含水相B可以在过渡带以及下地幔顶部稳定存在,它可以存贮高达5.8%的水,因此,大量的水可能会通过超级含水相B传输到过渡带和下地幔顶部中(Rosa,2015)。尽管高压实验与第一性原理计算都对超 Transition zone minerals have a very large capacity for water storage and subduction can transport large amounts of water into the transition zone (Hirschmann, 2006). A series of dense aqueous magnesium silicate phases, including superb A phase B, Is considered to be the main carrier for transporting water. Superhydrous phase B is stable at the transitional zone and at the top of the lower mantle. It can store up to 5.8% of the water, so large amounts of water may be transported to the transition through the super-aqueous phase B Belt and the lower mantle (Rosa, 2015). Despite the high-pressure experiments and first-principles calculations are super