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对大别地区角闪岩相-麻粒岩相和榴辉岩相岩石进行了较系统的地球化学研究，探讨了超高压俯冲变质及折返过程中元素的再分配行为，并就其对变质过程中的部分熔融作用和流体交代作用的指示进行了分析。研究表明，大别榴辉岩原岩在其俯冲过程中发生了部分熔融作用，并在其早期脱水和后期退变质作用过程中与变质流体相之间产生了交换。脱水作用使榴辉岩 Nb/Ta比值升高，但后期的退变质作用使榴辉岩与其寄主围岩间的 Nb/Ta比值相对均一化。角闪岩相-麻粒岩相岩石以相对富集 LREE和 LILE为特征，并具有较大的 Nb/Ta比值变化范围，但其 Nb/Ta比值的变化规律与榴辉岩相岩石区别明显，反映了大别地区超高压变质岩类与其他变质相岩石具不同的变质流体交代过程和变质机制。
The geochemistry of amphibolite facies-granulite facies and eclogite facies in the Dabie area was systematically studied, and the redistribution of elements during metamorphism and reentry of the UHP subduction was discussed. In the part of the melting effect and fluid metasomatism instructions were analyzed. The study shows that the original rocks of the Dabie eclogite partially melted in the subduction process and exchanged with the metamorphic fluid during its early dehydration and retrograde metamorphism. Dehydration increases the Nb / Ta ratio of the eclogite, but the retrograde metamorphism at the later stage results in a relatively uniform Nb / Ta ratio between the eclogite and its host rock. Amphibolite facies-granulite facies are characterized by relatively enriched LREE and LILE, and have a large range of Nb / Ta ratio. However, the variation of Nb / Ta ratio is obviously different from that of eclogite facies, It shows that the metamorphic fluids metamorphic mechanisms and metamorphic mechanisms are different between the UHP metamorphic rocks and other metamorphic rocks in the Dabie area.