Cenozoic East Sag of Liaohe basin consists of double structure and is a fault depression basin with extending and strike slipping.
辽河盆地东部凹陷北段新生代盆地具下断上拗的双层结构，是伸展和走滑联合作用的断陷盆地。
2
Qingdong sag is a secondary structure unit of Jiyang depression and lies in Bohai shallow sea waters.
青东凹陷是济阳坳陷的一个次级构造单元，位于渤海浅水海域。
3
On according the newest three earthquake preserve explaining fruit and drilling data of South Songliao basin in Yaoyingtai Changling sag area, analysis the rupture structure character.