根据1∶50万渤海湾新生代盆地区基岩地质图揭示的残留中生代地层的分布及构造变形特征，渤海湾地区的中生代盆地可以分为5期。
According to the remaining of Mesozoic strata and structural deformation on the basement rocks exposed beneath the Cenozoic basin in Bohai bay province , the Mesozoic basins can be divided into 5 periods of development .
基岩地质图