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变质核杂岩是伸展构造的主要类型之一.本文从宏、微观结合研究入手,将大别造山带的大磊山变质核杂岩自下而上划分出深变质核体、韧性剪切带、脆-韧性剪切带和流变滑脱盖层4个基本构造部分,并分别论述了各构造部分的变形、变质特征.结合区域构造背景,认为该变质核杂岩是大别造山带在晋宁期造山过程中,南、北淮阳地区早期裂解、晚期碰撞拼合形成的古变质核杂岩构造.
Metamorphic core complex is one of the main types of extensional structure.In this paper, starting from the macro and micro combination research, the Daleisha metamorphic core complex in the Dabie orogenic belt is divided into deep metamorphic nuclei and ductile shear zones , Brittle-ductile shear zone and rheologic caprock, and discussed the deformation and metamorphism of each structural part separately.According to the regional tectonic setting, it is considered that the metamorphic core complex is the most important part of the Dabie orogenic belt in Jin In the process of orogenic orogeny in the Ningxia period, the Paleogene metamorphic core complex formed by early cracking and late collision collisions in South and North Huaiyang area.