秦岭东部二叠纪地层分布在陕西镇安东南部和湖北郧西一带。这里的二叠系与石炭系、三叠系一起形成向斜构造。向斜轴近东西向,西端封闭,东部下倾并被米粮川大断层破坏,北部被张家川大断层截切。地层在西口一带发育最好且剖面完整。向斜两翼为石炭系和二叠 The Permian strata in the eastern part of the Qinling Mountains are distributed in southeastern Zhen’an and Yunxi in Hubei Province. The Permian and the Carboniferous and Triassic here together form a syncline structure. The axis of syncline is nearly east-west, closed at the west end, dipped eastwards and destroyed by Miwo-Da-Da fault, and cut by the Zhangjiachuan fault in the north. The strata are best developed and profiled in the west exit. The syncline wings are Carboniferous and Permian