delta plain

基本解释

It was suggested that the coal-bearing strata deposited in the coal-forming environment in delta plain-littoral swamps.
提出了含煤地层属于三角洲平原相滨海沼泽成煤环境的认识；
The results show that the mineral comparative maturity of sandstones increases with the distance from the fan-delta plain to the fan-delta front;
分析表明：从扇三角洲平原到扇三角洲前缘，矿物成分成熟度呈现递增的趋势，河口坝微相的长石砂岩最为发育；
In this area besides good coal-forming conditions in transitional zone, there also exist good coal-forming conditions in upper delta-plain and lagoon-tidal flat too.
除存在公认的上下三角洲平原的过渡带具有良好的成煤条件外，还存在上三角洲平原及泻湖—潮坪这类良好的成煤环境。