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在７５０～１２００℃、１．０～４．５ＧＰａ条件下对取自于大别山双河的长英质片麻岩进行了重结晶实验。在７５０℃时，随压力增加矿物生成顺序为：角闪石在１．７５ＧＰａ时出现，２．５ＧＰａ时消失；黑云母在１．７５ＧＰａ时通过水化反应生成多硅白云母；绿帘石可以稳定到＞３．５ＧＰａ，在４ＧＰａ时转变成硬柱石；石榴石和绿辉石在１．５ＧＰａ时开始出现，而斜长石在１．７５ＧＰａ时消失；石英在３ＧＰａ时转变为柯石英。这表明角闪岩相与榴辉岩相的转变发生在１．５～１．７５ＧＰａ，并且，榴辉岩相可进一步划分出角闪榴辉岩相、柯石英榴辉岩相和硬柱石榴辉岩相等，它们分别指示不同的压力区间。多硅白云母是长英质岩石在高压－超高压条件下的主要共生矿物，其水化反应特性及结构水的保存致使陆壳在深俯冲过程中未发生明显的脱水作用，这是大别山碰撞带未能形成钙碱性岩浆弧的主要原因
The recrystallization experiments of feldspathic gneiss from Shuanghe, Dabie Mountains, were carried out at 750-1200 ℃ and 1.0-4.5GPa. At 750 ℃, the order of mineral formation with increasing pressure is as follows: amphibole appears at 1.75GPa and disappears at 2.5GPa; biotite generates polysilicone at 1.75GPa by hydration reaction; Stabilized to> 3.5 GPa, converted to durian at 4 GPa; garnet and omphacite began to appear at 1.5 GPa, whereas plagioclase disappeared at 1.75 GPa; quartz changed to coesite at 3 GPa. This indicates that the transformation of amphibolite facies and eclogite occurs at 1.5 ~ 1.75GPa, and the eclogite facies can be further divided into hornblend eclogite facies, coesite eclogite facies and hard column pomegranate Hyphenates are equal, indicating different pressure intervals. Silicalite is the main symbiotic mineral of the feldspathic rocks under high pressure-high pressure. The hydration characteristics and the preservation of structural water cause no significant dehydration of the continental crust during the deep subduction. This is due to the collision of the Dabie Mountains With the failure to form the main reason of magmatic alkaline magma arc