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珠江口伶仃洋表层沉积物中业经鉴定的重矿物共有近３０种（类）．根据重矿物种类和含量的分布特点，可将海区划分为４个重矿物组合类型及相应的４个矿物区，浅海残留砂矿物区主要受陆架水入侵控制；河口湾矿物区主要受陆架水入侵的顶托影响；混合矿物区处于陆架水入侵控制一顶托影响的过渡地段。伶仃洋由于受下泄径流和陆架水入侵的夹击作用，致使其底质沉积物的粒度及重矿物的含量，由陆向海分别呈现“粗－细－粗”和“高－低－高”的变化趋势。
There are nearly 30 species of heavy minerals identified in the surface sediments of the Lingdingyang Sea in the Pearl River Estuary. According to the distribution characteristics of heavy minerals and their contents, the sea area can be divided into four types of heavy mineral assemblages and the corresponding four mineral areas. The residual sand mineral area in shallow sea is mainly controlled by shelf water intrusion. The estuarine mineral area is mainly affected by shelf water intrusion Of the top support; mixed mineral area in the shelf water intrusion control a top-care transitional section. Lingdingyang, due to the pincer attack caused by the run-off of runoff and the invasion of shelf water, resulted in the variation of coarse-thin-coarse and high-low-high sediment grain size and heavy mineral content from the seaward to the sea .