There are some softer accumulation horizon in the ox-bow lake and season river on the huge mucky soil of alluvial and lacustrinedeposits in accumulation terrace around Dongting lake.
在洞庭湖漫滩阶地的冲湖积淤泥质软土上，分布着一些次级牛轭湖和季节性洪道成因的极软淤积物。
2
The general sedimentary characteristics indicate that shore-shallow lacustrinedeposits are the main types, while flood plain, delta and fan delta occurred mainly along the basin margin.
沉积相总体特征以滨浅湖沉积为主，而在研究区周缘则多发育河流泛滥平原、三角洲和扇三角洲沉积。
3
The Palaeogene system in the southern west sag of the Dongpu depression consists of rift lacustrinedeposits, and is developed with fluvial, delta, alluvial, fan delta and lacustrine facies.