在坳陷湖盆，河道、湖岸线和缓坡对有利于岩性圈闭发育的三角洲前缘砂体具有明显的控制作用。
The rival channel, lake shoreline and gentle slope are quite important for controlling the delta-front sand-body of lithologic trap in a depression basin.
结果在凹陷内圈定了与主河口有关的扇三角洲前缘、水下扇等骨架砂体的展布，识别出了构造、岩性及复合等多种可能的有利圈闭。
ResultsSand architecture of fan delta, subaqueous fan associated with main mass sources are outlined, helping to identify potential structural, lithologic and composite traps.
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