我国东部冀、鲁、苏、皖毗邻区有一系列近南北走向的构造形迹,它们大体展现于东经117°—119°左右,以往多被视为其它构造体系的伴生产物,或勉强划归新华夏系。通过实际工作,我们发现这些近南北向的构造形迹挤压性或扭压性特征最为明显,有些断裂带的力学性质有过转化,成为复性结构面,其走向一般偏东或偏西5°—10°;从区 In the eastern part of China, there are a series of tectonic traces near the north-south direction in the adjacent areas of Hebei, Shandong, Jiangsu and Anhui provinces. They generally show in the east longitude of about 117 ° -119 °. In the past, most of them were regarded as concomitant products of other tectonic systems or reluctantly assigned to new Chinese Department. Through the actual work, we find that these near-north-south structural features are the most obvious features of squeezing or twisting pressure. Some of the mechanical properties of the fault zones have been transformed and become the refolding structural planes, which are generally eastward or westward 5 ° -10 °; from the area