沿盆地长轴方向，在坡降缓、斜坡长的古地形等条件下，源远流长地巨大的定向曲流河携带大量的泥沙进入湖盆，在河湖作用过渡带形成曲流河三角洲沉积体。
The immense oriented meandering river, along the long axis of the depression and with the gentle declivity and long slope, carried a large amount of mud and sand into the lake basin.
在东北部缓坡带发育辫状河三角洲，而在西北部缓坡带则发育曲流河三角洲。
There is braided river delta sedimentary system in the northeast of the gentle slope, while delta in the northwest.
在东北部缓坡带发育辫状河三角洲，而在西北部缓坡带则发育曲流河三角洲。
There is braided river delta sedimentary system in the northeast of the gentle slope, while delta in the northwest.
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