Eocene Nadu group,in baise basin,Guangxi autonormous region can be divided areally into central oil generation sag area,ring-like belt for oil and gas accumulation,and marginal fault controlling belt respectively.

• 广西百色盆地第三系始新统那读组,从平面上可以划分为生油凹陷中心区、油气环形聚集带和边界断层控制带。