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对大别山东部超高压榴辉岩氧同位素研究表明，这些榴辉岩的δ１８Ｏ值分布表现出显著不均一性，从低达－２．６‰变化至＋０．７‰。榴辉岩中各矿物之间的氧同位素分馏达到并保持了平衡，表明岩石在遭受超高压变质作用之前与亏损１８Ｏ的流体进行过相互作用。含羟基矿物的δＤ值为－５１‰～－８３‰，指示参与的流体是古大气降水，它与榴辉岩原岩（某种玄武质岩石）发生过显著的氧同位素交换。超高压变质榴辉岩中大气降水同位素信息的保存表明，这种榴辉岩的原岩曾经出露于大陆地壳表面，并且当包含榴辉岩原岩的板块俯冲至地幔深度时，地壳与地幔之间的物质交换非常有限，因此滞留时间非常短暂（＜２０Ｍａ）。不同矿物对的氧同位素平衡温度基本一致，反映出这种超高压变质榴辉岩在地幔深度下形成之后，经历了一个快速的冷却和上升过程。长英
Oxygen isotope studies on ultrahigh-pressure eclogites in the eastern part of the Dabie Mountains show that the δ18O values of these eclogites show a significant heterogeneity ranging from -2.6 ‰ to + 0.7 ‰. Oxygen isotopic fractionation between minerals in the eclogite attained and maintained equilibrium, indicating that the rock had interacted with a loss of 18O fluids prior to being subjected to UHP metamorphism. The δD values for hydroxyl-bearing minerals range from -51 ‰ to -83 ‰, indicating that the fluid in question is Paleo-Atmospheric Precipitation that has undergone significant oxygen isotope exchange with the eclogite protolith (some basaltic rock). Preservation of isotopic information of atmospheric precipitation in the UHP metamorphic eclogites shows that the protolith of this eclogite had been exposed on the surface of the continental crust and that when the plate containing the eclogite protolith subducted to the depth of the mantle, the crust and mantle The material exchange is very limited, so residence time is very short (<20Ma). The equilibrium temperatures of oxygen isotopes of different mineral pairs are basically the same, which shows that the ultrahigh-pressure metamorphic eclogites undergo a rapid cooling and ascending process after their formation in the mantle depth. Chang Ying