Cenozoic graben structure is the most general and characteristic tectonic in North China.
新生代地堑构造是华北地区最普遍和最有特征的构造。
The fourth phase is that the NS graben structure was produced by EW expanding mechanism in late Cenozoic.
第四期变形为新生代晚期东西向伸展机制下产生的南北向地堑构造。
The structural style found in the basin includes imbricated thrust zone, trapdoor structure, drag fold, listric fault, rollover anticline, horst-graben structure and the like.
盆地中发育多种构造样式，主要有：叠瓦状冲断层、滚板构造、牵引褶皱、铲形正断层、滚动背斜、“垒一堑”构造等。
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