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江口洲是长江枝江段一心滩型江心洲，它由心滩主体和侧伏边滩组成．在对垂向沉积剖面及沙体平面展布规律进行分析的基础上，认为江口洲是由河床底部滞留沉积、心滩、边滩及河漫滩沉积４个微相单元组成，其中心滩沉积和边滩沉积是两个最重要的微相单元，江口洲的非均质性实际上是由边滩和心滩的非均质性两部分构成的。通过野外观察和室内分析，对边滩和心滩沙体的几何形态、规模、夹层的分布形式、沙泥岩的配置关系和层问连通性以及沉积剖面的韵律结构等进行了研究，在此基础上，阐述了边滩和心滩的层间及层内非均质特征。
Jiangkou Island is a heart-shaped heart-shaped river in the section of the Zhijiang River in the Yangtze River. It consists of the main body of the heart-shaped beach and the side-volts. Based on the analysis of vertical sedimentary profiles and distribution of sand bodies, Jiangkou Island is believed to be composed of four microfacies units at the bottom of the riverbed, sediment deposits at the bottom of the riverbed, Beach deposits are the two most important microfacies units. The heterogeneity of Jiangkou Island is actually composed of two parts, the side beach and the heart beach. Based on field observations and laboratory analyzes, the geometry, size, distribution patterns of sand and mudstone, the relationship between sandstone and mudstone, connectivity of layers and layers, and the prosodic structure of sedimentary sections were studied. Based on this, On the edge of beach and heart of the strata and in-layer heterogeneity characteristics.