对珠江口盆地番禺低隆起东部L16井中新统珠江组的岩心观察分析,岩性包括碎屑岩、碳酸盐岩以及碎屑-碳酸盐的混积岩.珠江组可划分为11种沉积微相类型;建立了三角洲—滨岸—碎屑与碳酸盐混积滨岸—碳酸盐台地—浅海陆棚(23.8 Ma～18.5 Ma)沉积演化序列.地震地质解释证实了珠江组早期东沙三角洲的存在;古珠江三角洲与东沙三角洲构成了研究区珠江组下段的沉积主体.恢复了研究区珠江组沉积相及其演化,重点刻画了SQ2-TST时期由陆到海的变迁,而海平面变化是这一变迁的主要控制因素.

Based on the data of drilled cores from Well L16 in eastern Panyu Uplift, Zhujiangkou Basin, it is shown that the Miocene Zhujiang Formation consists of clastic rock, carbonate rock and mixed clastic/carbonate rock in lithology. 11 depositional microfacies can be divided in Zhujiang Formation. A depositional evolution sequence which includes delta, shoreland, carbonate platform and then shelf is setup from Early to Late Miocene stara. The interpretation of seismic and geological data proves the existence of early Dongsha delta sediments, so it is suggested that the Lower Member of Zhujiang Formation, which means the principal depositional part of it, should consist of the ancient Zhujiang delta and the Dongsha delta. Restoration of depositional environment and evolution has described a continuous change from continental to marine deposition in Subsequence SQ2 (TST) during Miocene Zhujiang, that is a process from retrograding clastic to prograding carbonate deposition..