华北聚煤区南缘(豫皖)逆冲推覆构造带

The Thrust and Nappe Tectonics Zone along the Boundary of Coal Accumulation of North China

华北聚煤区南缘发育一条由叠瓦扇分支断层和逆冲岩席组成的逆冲推覆构造带,其成因与秦岭——大别山碰撞型造山带紧密相关,属造山带北麓燕山期逆冲断裂系的前锋部分。逆冲推覆作用破坏改造了聚煤区的原始沉积边界,在逆冲推覆构造带的前缘逆冲岩席中和缓波状起伏的主滑脱面下,可望找到新的含煤块段。

There is a thrust and nappe tectonic zone with branch thrusts of imbricate fan along the boundary of coal accumulation of North China. This tectonic zone is tightly related to Qinling-Dabie orogenic belt in genesis, and belongs to the frontal zone of a large scale thrust system developed during Yanshenian on the north margin of the orogenic belt. It is pointed out that the thrust distorted the original sedimental boundary of coal accumulation, and some new coal-bearing blocks will be found in the frontal horses and under the undulant sole thrust.