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安徽省大别山东段江岭地区的南大别碰撞杂岩主要由榴辉岩、云母片岩-变粒岩及片麻岩系组成,这三套岩石具有不同的变质演化阶段和P-T轨迹:榴辉岩有5个变质阶段,早期出现超高压型、高压型,晚期为中压型;云母片岩-变粒岩有4个变质阶段,早期出现高压型,晚期为中压型;片麻岩系仅有一期中压绿帘角闪岩相变质。三套岩石变质历史的差异,反映其所经历的构造过程不同。三者在构造作用下混杂到一起,构成碰撞混杂岩。
The southern Dabie collision complex in the Jiangling area of the eastern Dabie Mountains in Anhui Province consists mainly of eclogites, micritoliths-granulites and gneiss, and these three rocks have different metamorphic evolution stages and P-T trajectories: There are five metamorphic stages of Hui rock, which are ultrahigh pressure type and high pressure type in the early stage and medium pressure type in the late stage. There are four metamorphic stages of mica schist-granulite with high pressure type in early stage and medium pressure type in late stage. Only one phase of greenstone amphibolite facies metamorphism. The differences between the three sets of rock metamorphism reflect the different tectonic processes they experienced. The three are mixed together under the action of tectonics to form a collision melange.