fan delta plain 扇三角洲平原
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；
There are three deltaic types developed in lacustrine strata, i. e. , normal, braid and fan deltas, which consist of delta plain, delta front and front delta.
在湖泊中存在三种三角洲类型，即正常三角洲，辫状三角洲和扇三角洲。
The general sedimentary characteristics indicate that shore-shallow lacustrine deposits 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。
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