There are three main types of sedimentary facies: braided-river delta, slip turbidite fan, near-bank submerged alluvial fan.
确定研究区沙三段主要发育有辫状三角洲、近岸水下扇、滑塌浊积扇等几种沉积相类型；
The sedimentary facies mainly consists of 5 types, such as meandering river, braided river, braided river delta, lake and swamp lake.
沉积相类型主要为曲流河、辫状河、辫状三角洲、湖泊、沼泽化湖泊等5种。
In vertical, from E31 to E32, it changes from braided river delta to a shallow lake facies, thus, formed a cycle which lithologic character is rough at bottom.
在纵向上，从E31 - E32，从下向上由辫状河三角洲相变为浅湖相，构成了一正旋回沉积。
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