Field studies and grain size analyses of the River Ero sediments illustrate the transportation, depositional processes, and depositional environment. The river channel sediments are sandy (devoid of fines), while the riverbank deposits are sandstones (thickly–thinly laminated) and mudrocks. Graphic litho-logs of the exposed riverbanks display sequences of sedimentary rocks deposited in two rhythmic cycles (I and II) of upward fining characteristics. The river channel sediments graphic mean size (M_z) ranges from coarse to medium-grained, inclusive graphic standard deviation (σ_i) of moderately well sorted to poorly sorted, inclusive graphic skewness (Sk_i) of strongly coarse skewed to strongly fine skewed, and graphic kurtosis (K_G) that ranges from very platykurtic to very leptokurtic. The Laser granulometry results of the riverbank deposits showed M_z range from very fine sand to coarse silt), σ_i range of moderately sorted to poorly sorted, Sk_i is symmetrical to fine-skewed; and K_G is platykurtic to leptokurtic. The bivariate plots of grain size statistics suggest river processes and deposition under fluvial conditions. The bivariate plots also indicated tractive mode transportation/deposition processes: rolling, graded suspension, and a blend of these for the river channel sediments; and uniform suspension for the riverbank deposits. The sandy and muddy lithofacies analysed are mainly products of suspension tractive mode, in a fluvial environment as flood-basin or riverbank deposits.

对Ero河沉积物的现场研究和粒度分析表明了其运输，沉积过程和沉积环境。河道的沉积物是沙质的（没有细粉），而河岸的沉积物是砂岩（厚薄地层压）和泥岩。裸露的河岸的岩性岩石测井曲线显示了在两个向上上升特征的有节奏的旋回（I和II）中沉积的沉积岩层序。河道沉积物图形平均尺寸（中号_Ž）从粗范围到中粒，包容图形标准偏差（σ_我）的适度以及分类到分选差，包容图形偏度（SK_我）的强烈粗偏斜强烈细偏斜和图形峰度（K _G）的范围从非常扁平的到非常瘦的。河岸沉积物的激光粒度结果显示中号_ž范围从非常细的砂粗粉粒），σ_我范围中等分选到分选差的，SK_我 是对称的微细偏斜; 和K _G扁柏性至瘦性。粒度统计数据的二元图显示了河流条件下的河流过程和沉积。双变量图还指示了牵引模式的运输/沉积过程：滚动，分级悬浮以及这些混合形成的河道沉积物。并统一暂停河岸沉积物。在河流环境中，如河流域或河岸沉积物，分析的沙质和泥质岩相主要是悬浮牵引模式的产物。