The surface soil property on the seabed northwest area of Wunansha uplift in the South Yellow Sea Basin is medium compact silt fine sand and sandy silt, which are usually called ferro plate sand.

• 南黄海盆地勿南沙隆起西北部海区的海床表层土质为中密实的粉砂质细砂和砂质粉砂,俗称铁板砂。