The subaqueous distributary channel is the main type of the fan delta front while the channel mouth bar is developed locally.
扇三角洲前缘砂体类型以水下分流河道为主，局部发育河口坝。
2
Clastic rock compounds as a main sedimentation body deposited by means of distributary channel sediments are well developed in the sedimentation of the fan delta and braided channel delta.
分流河道沉积的碎屑岩复合体在扇三角洲和辫状河三角洲沉积中非常发育，是其沉积主体。
3
The subaqueous distributary channel clastic rock bodies in the fan delta front formed the main part of the fan delta and the most important oil and gas reservoirs.