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中国中部超高压变质带中的榴辉岩一般发育４～５个变质演化阶段：前榴辉岩阶段、榴辉岩峰期阶段、早期高压退变阶段、晚期退变阶段和后期叠加变质阶段。本文依据这一变质演化的研究，得出了一条与以往不同的Ｐ－Ｔ轨迹。它表明榴辉岩回返时首先沿俯冲带缓慢上升到较浅部位，出现与进变质过程相似的Ｐ－Ｔ轨迹；然后主要涉及地壳范围的，与碰撞造山有关的推覆作用使其进一步迅速回返，出现绝热抬升轨迹。这种双阶段双机制的回返模式不仅与榴辉岩中发育的变质作用过程相符，而且可以解释榴辉岩研究中一系列难以理解的问题。
The eclogite in the UHP metamorphic belt in central China generally develops from 4 to 5 metamorphic evolution stages: the former eclogite stage, the eclogite peak stage, the early high-pressure degenerate stage, the late degenerate stage and the later metamorphic stage. Based on the study of metamorphic evolution, this paper draws a P-T trajectory different from the past. It indicates that the eclogite first slowly rose along the subduction zone to a shallower zone with a P-T trajectory similar to that of the metamorphic process; then the crustal extent, mainly related to the crustal extent, resulted in a further rapid return , There adiabatic rise trajectory. This double-phase, dual-mechanism return pattern not only conforms to the metamorphic processes developed in eclogites but also explains a series of difficult-to-understand problems in eclogite studies.