罔4．湖滩沉积的宴测剖面，具前积结构，（榆林安崖）
Fig. 4 Lake beach deposits with progradational configuration, Anya, Yulin.
前三角洲斜坡发育重力流的主要控制因素是三角洲的快速进积作用和前三角洲斜坡自身存在的二元结构。
The controlling factors for the development of gravity-flow deposits on prodelta slope are deltaic progradation and the double-layer structure of the slope.
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