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本文依据红安群(宿松群)和大别山杂岩在岩石建造和变形、变质改造等方面的重大差异以及其间残存的角度不整合面,进一步肯定了大别运动的存在。大别运动主要发生时间为2500Ma左右,区域上大致可与华北地台阜平运动对比,是大别山地区原始硅铝质陆壳形成和韧性再造的变革运动。初步将大别旋回划分出早期伸展、中期挤压和晚期走滑剪切3个变形幕。指出了大别运动界面是大别山上部地壳极其重要的滑脱界面和层圈构造,沿袭这一古老构造薄弱面曾先后发生了韧性滑覆、脆-韧性逆冲推覆和脆性剥离等变形事件。
This article further affirms the existence of the Dabie movement, based on the significant differences between the Honganqun (Susong Group) and the Dabieshan complex in rock formation, deformation, metamorphism and transformation, as well as the residual unconformity. The main occurrence time of the Dabie movement is about 2500 Ma, which can be roughly compared with the Fuping movement in the North China platform in the region. It is a change movement of the formation and resilience reconstruction of the primitive Si-Al-continent continental crust in the Dabie Mountains. The Dabie cycle was initially divided into three deformation curtains: early extension, medium-term extrusion and late strike-slip shear. It is pointed out that the Dabie motion interface is an extremely important detachment interface and layer ring structure in the upper crust of the Dabie Mountains. Deformation events such as ductile slip, brittle-ductile thrust nappe and brittle delamination have been successively followed.