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本区在地理上位于华北平原北部,构造上属于冀中断陷区(图1),和华北平原新生代构造一样,主要是早第三纪构造,而上第三系—第四系平铺其上,没有明显的构造形变,只在上第三系底部有断裂伸入。
This area is geographically located in the northern part of the North China Plain and structurally belongs to the Jizhong fault depression area (Fig. 1). Like the Cenozoic tectonics in the North China Plain, the area is dominated by the Early Tertiary tectonics and the Upper Tertiary-Quaternary system tiled There is no obvious tectonic deformation, only the bottom of the Tertiary fault extension.