In centraI and southern Arabia the first sediments overlying crystalline basement were the Late Precambrian to Earlp Cambrian carbonates,clastic and evaporites,which followed by the latest Early Cambrian through Early Permian sandstones and shales.

• 阿拉伯半岛中部和南部结晶基底之上最早的稳定沉积是前寒武纪晚期至早寒武世的断陷盆地沉积,以碳酸岩、碎屑岩和蒸发岩为特征。 寒武系至下二叠统地层由陆源碎屑岩及少量碳酸岩组成。