Abstract: The authors illustrate the characteristics of neotectonic movement of the Tangyin graben (Henan Province) situated in the southern section of the Taihanshan Piedmont fault zone with a NNE trend and point out that the northern part of thi graben is only a semigraben, while its western side is a hinge fault with progressively decreasing in vertical displacement and finally dying out in the northern direction. According to the field seismotectonic investigations the authors made a prediction that the western part of Tangyin County near the hinge point is prone to the earthquakes due to the hinge point's further northward migration. Later, this prediction was verified by an earthquake with 3.9M. just occurring in this part in Oct. 1978.Moreover, the Anyang city, located on the intersection of the Taihanshan fault zone with a NWW pivotal fault, is an another earthquake-prone area due to the fea-ssible location to concentrate tectonic stress, and then it must be put under monitoring.

摘要： 本文论述太行山前地震构造带南段、汤阴地堑的新活动特点,发现只有其南部是地堑,北部是由一条东侧断裂构成的半地堑。而汤阴地堑西侧断裂为断距往北迅速减小以至消失的断层。作者在野外工作结束时曾预测汤阴县西部是由于捩点继续北移而可能发震的一个危险区,并为后来在该处发生的一个3.9级地震所证实。此外,安阳市一带因有一条活动强烈、断面分别倾向南、北的北西西向枢纽断层——安阳断裂横截于南部的汤阴地堑和北部的磁县、临漳诸断裂之间,是应力容易集中、有发震可能的另一危险区,应注意监测。