Fan deltas distributed in gently slopes and braided river deltas develop alternately in all stages.在整个湖泊阶段，缓坡的扇三角洲和辫状河三角洲砂体交替出现。
The fluvial sediments of the Neogene in the Nanpu 35-2 area of Central Bohai Gulf are well-developed and can be divided 摘要渤海湾中部南堡35-2地区新三系河流沈积十分发育，可分爲曲流可沈积和辫状河沈积两种类型。