It is considered that F4 layer is a submarine fan generated by gravity flow in marine environment, with a regressive-transgressive sequence from the lower to the upper parts.
认为扎尔则油田泥盆系F4层的沉积相是海洋环境下重力流沉积形成的水下扇，从下到上为一海退—海进沉积序列。
The maximum flooding surface lying in estuarine - shallow Marine muddy unit demarcates the underlying transgressive sequence and overlying regressive sequence.
位于河口湾—浅海相中的最大海侵面将冰后期海侵沉积旋回分为其下的海侵层序和其上的海退层序。
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