The huge oil_bearing nodules,oil shale and marl interbeded in thick dark mudstone were firstly found in Middle Permian in the northern Turpan_Hami Basin.

• 地震、探井资料及盆地分析结果表明,台北凹陷北缘与准噶尔盆地南缘为中二叠世沉降沉积中心,该地区中二叠统深湖相泥岩是这两个盆地油气藏的主要烃源岩。