The basin was filled with thick sediments of Quaternary lake and alluvial facies and accumulated with tin placer which is locally enriched to be commercial deposit.
盆地中充填有第四纪湖相-冲积相厚层沉积，有砂锡聚集，局部富集成矿床。
The Honghu lake had a open, stable environment enriched in plankton diatoms, with less sediment from the river during this period.
此期间，河流带入湖泊的泥沙少，洪湖拥有一个开阔、稳定、浮游生物较多的淡水湖泊环境。
The potassium compounds are enriched at the lowest water level in the brine lake by the processes of selective solution.
由于选择性溶解作用使钾富集在水位最低的卤水湖内，并在干盐滩与卤水湖之间的平坦湖滨地带形成钾盐层。
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