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高分辨率层序地层学研究的关键是确定等时界面。在前人提出的高频基准面转换旋回分析和关键界面（洪泛面）对比分析来确定等时性的基础上，以板中东油田板２油组水下冲积扇沉积为例，就湖盆内事件沉积的特点，提出可以结合洪泛面和事件沉积界面以及异旋回和自旋回来进行高分辨率层序地层的对比研究。实例研究结果表明，事件沉积虽然破坏了正常沉积的规律性，但它本身却是良好的等时界面。
The key to high-resolution sequence stratigraphy research is to determine the isochronous interface. On the basis of the previous analysis of the high frequency datum conversion cycle analysis and the key interface (flood surface) contrast analysis to determine the isochronism, taking the sedimentation of the subaerial alluvial fan in Ban 2 oil formation of Middle East Oilfield as an example, It is proposed that the high-resolution sequence stratigraphy can be combined with flood-surface and event depositional interfaces and meta-cyclotrogram and spin-back stratigraphy. The results of the case study show that event deposition, although disrupting the regularity of normal deposition, is a good isochronous interface in itself.