The Northern Jiangsu basin is an oil-gas bearing half graben-like basin of Middle Caenozoic era in Eastern China, and is mainly made up of three structural units: the Dongtai sag, the Yancheng - Funing sag and the Jianhu upheaval.

• 苏北盆地是我国东部中新生代箕状含油气盆地群,主要由东台坳陷、盐-阜坳陷和建湖隆起三大构造单元组成;