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.
提出了含煤地層屬於三角洲平原相濱海沼澤成煤環境的認識；
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：從扇三角洲平原到扇三角洲前緣，鑛物成分成熟度呈現遞增的趨勢，河口垻微相的長石砂巖最爲發育；
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.
除存在公認的上下三角洲平原的過渡帶具有良好的成煤條件外，還存在上三角洲平原及瀉湖—潮坪這類良好的成煤環境。