On the seismic section it appears as erosion, toplap, onlap, downlap;
在地震剖面上表现为剥蚀、顶超、上超、下超；
Stratigraphy traps can be classified into stratigraphic onlap trap and stratigraphic erosion unconformity trap.
地层圈闭可分为地层超覆不整合圈闭和地层削蚀不整合圈闭。
There exists a large-scale transgressive onlap boundary between the Langshan Formation and its underlying strata.
证实郎山组与下伏地层之间存在一大型海侵超覆界面；
There are four types of subtle traps in Gaoyou sag, Which is fault-lithologic trap, sandstone up pinchout trap, lens trap and stratigraphic onlap trap.
高邮凹陷的隐蔽圈闭主要有四种类型，即断层岩性圈闭、透镜体圈闭、砂岩上倾尖灭圈闭和地层超覆圈闭。
Onlap is a particular pattern of reflections in seismic data that, according to principles of sequence stratigraphy, occurs during periods of transgression.
在地震资料中，上超是一种特殊式样的反射，依照层序地层学的原理，它出现在海侵作用期间。
Onlap is a particular pattern of reflections in seismic data that, according to principles of sequence stratigraphy, occurs during periods of transgression.
在地震资料中，上超是一种特殊式样的反射，依照层序地层学的原理，它出现在海侵作用期间。
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