delta plain

The delta system may be classified into six types of geomorphic units: upper deltaic plain, lower deltaic plain, subaqueous deltaic plain, marginal deltaic basin; marginal deltaic tidal plain and marginal deltaic swamp plain.

将三角洲体系划分为六种地貌单元：上三角洲平原、下三角洲平原、水下三角洲平原、边缘三角洲盆地、边缘三角洲潮汐平原及边缘三角洲沼泽平原。

During the initial stage of coal measures deposition, was mainly alluvial fan deposit, middle stage lake delta deposit and later stage lacustrine deposit. Most coal seams in Yanan Formation were formed in peaty moors on lake delta plain.

煤系沉积初期，以河流及冲积扇沉积为主，沉积中期则以湖泊三角洲沉积为主，晚期以湖泊环境为主，延安组各煤层大多是在湖泊三角洲平原上泥沼化形成的。

Paddy rice distributings in red river delta, mekong delta reaches coastal plain.

稻米分布在红河三角洲, 湄公河三角洲及沿海平原.

These facies are open platform, restricted platform, barrier island, lagoon, tidal flat, peat swamp, former delta, delta front and delta plain.

沉积相包括：开阔台地相、局限台地相、障壁岛相、泻湖相、潮坪相、泥炭沼泽相、前三角洲相、三角洲前缘相和三角洲平原相。

The third member of Shawan Formation was braided-delta plain subfacies, which was divided into braided channel and flood plain.

沙湾组三段为辫状河三角洲平原亚相，细分为辫状河道和河道间湾。

And the delta genetic unit includes distributary channel, distributary bay, small lake of delta plain, swamp, distributary estuary bar, frontal delta mud and sandy density flow and so on.

其成因相包括分流河道、决口扇及决口河道、分流间湾、三角洲平原小型湖、沼泽、分流河口坝、前三角洲泥及砂质重力流等；