对其相变模式研究表明，河口湾沉积特征及岩相分布受波浪、潮汐和河流三种水动力所控制。
Study on the facies models indicates that sedimentary features and the distribution of lithofacies are controlled by the interplay between Marine processes (waves and tides) and fluvial processes.
K18煤层是河口湾沉积格架上形成于浅覆水高位森林沼泽之中，最终又被河口湾沉积所覆盖。
The K18 coalbed was formed in a high position forest swamp covered by shallow water on the structure of estuary sediments and it was finally covered by estuary sediments.
中部块状砂岩和上部含砾砂岩形成于河口湾和前滨、临滨沉积环境。
The middle massive sandstone and upper pebbly sandstone formed in an estuary, foreshore and nearshore environments.
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