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在750～1200C、1.0～4.5GPa条件下对取自于大别山朱家冲的斜长角闪岩进行了重结晶实验,并对其在高压-超高压区域的相关系进行了简要讨论。结果表明,在750 C时,斜长角闪岩随压力的前进演化经历了斜长角闪岩(Ga+Amp+Ep+Bi+Pl+Qz,1.0～1.5 GPa)、角闪榴辉岩(Ga+Cpx+Amp+Ep+Ph+Qz,1.75～2.25 GPa)、石英榴辉岩(Ga+Cpx+Zo+Ph+Qz,2.5 GPa)、柯石英榴辉岩(Ga+Cpx+Zo+Ph+Cs,3.0～3.5 GPa)和硬柱石榴辉岩(Ga+Cpx+Law+Ph+Cs,4.0～4.5 GPa)5个阶段,每个阶段之间的相关系可由一些特定的变质反应来限定。角闪石是榴辉岩演化早期和晚期阶段的主要共生矿物,它可以被看做是一种指示性矿物,其稳定上限低于2.5 GPa。黝帘石-蓝晶石-柯石英组合的出现指示大别山榴辉岩的压力上限未达到硬柱石的稳定区域,其形成压力不会超过4.0～4.5 GPa。榴辉岩中含水矿物的前进替代证明在俯冲带中有部分地表水被携带至地幔,而连续的脱水作用也为俯冲板片的部分熔融提供了水源。
The recrystallization experiments of amphibolite from Zhujiachong in the Dabie Mountains were carried out at 750 ~ 1200C and 1.0 ~ 4.5GPa, and their correlations in the high pressure-high pressure region were briefly discussed. The results show that the evolution of the plagioclase amphibolites with pressure at 750 C has experienced the evolution of amphibolite (Ga + Amp + Ep + Bi + Pl + Qz, 1.0-1.5 GPa), hornblende eclogite Ga + Cpx + Amp + Ep + Ph + Qz, 1.75 ~ 2.25 GPa), Ga + Cpx + Zo + Ph + Qz 2.5 GPa, Ga + Cpx + Zo + Ph + Cs, 3.0 ~ 3.5 GPa) and hard phengite eclogites (Ga + Cpx + Law + Ph + Cs, 4.0 ~ 4.5 GPa). The correlation between each phase can be defined by some specific metamorphic reactions . Amphibole, the major symbiotic mineral in the early and late eclogites, can be considered an indicative mineral with a stable upper limit of less than 2.5 GPa. The appearance of the zoisite-kyanite-coesite combination indicates that the upper pressure limit of the Dabieshan eclogite does not reach the stable area of the columnar, and the formation pressure will not exceed 4.0-4.5 GPa. The replacement of the water-bearing minerals in the eclogites demonstrates that some of the surface water in the subduction zone is carried to the mantle, while the continuous dehydration also provides a source of water for partial melting of the subducting slab.