【摘要】 本文根据本区地震地质及重磁区域场特征确定滤波程度,并考虑震中深度分布,在试验计算的基础上确定公式及参数,计算编绘了适合本区的重力平均异常图,及南北向、东西向的重力水平梯度图、重力水平二次微分图,其结果较为明显地突出地壳内不同方向的构造分布,结合航磁资料综合分析指出: 本区有五条纬向构造带存在,除大名—磁县断裂外,其余四条均穿越太行山断裂带,其形成时期是不一致的。对有争议的大名—磁县断裂西端的延伸问题提出了看法。对本区主要构造—内黄隆起区的边界及基底特征作了分析研究。最后讨论了重磁场背景、构造与地震的关系。结合近年来华北地区中强震分布状况,提出今后应注意加强监视的地区。更多还原

【Abstract】 In this paper, the maps of the gravity average value, the gravity horizontal gradient value and the gravity horizontal second order differential have been computed and drawn up by the formula and parameters, which had been defined basing on the regional characteristics of the seismogeology and gravitational-magnetic field that are used to make filter analysis and the depth of the earthquakes, in this jucture of Shanxi, Hebei, Shandong and Henan provinces. The results have clearly shown the strikes of the different structures in the crust. Combining with the airborne magnetic analysis information, we have pointed out: There are five latitudinal structural zone. Four of the those faults, except Damin fault, are crossed over Taihang fault zone but formed in different age. Some disputable geological problems of this area, such as the extension of the west termination of the Damin, have been discussed. The boundary and the basement character of the Neihuang uplifted block have been analyzed, Finally. we have discribed the relation between the G-M regional ambient field, faults and the earthquakes distribution, and presented the area where should be paid attention in the future,更多还原