in the southern part and the north edge of Liyue Bank(Liyue Reef Shoal), sediments are calcareous ooze due to be affected by large quantities of detrital corals.

• 南部海区、礼乐滩北缘沉积物受礼乐滩珊瑚碎屑影响大，沉积物类型为钙质软泥。