Compared to supersequence boundaries, the depositional hiatus at sequence boundaries is shorter and sequence boundaries are not compatible with lithostratigraphic unit boundaries.

层序界面处断的时相对超层序界面要短，岩石地层单位界面往往不一致。

It is emphasized that the first flooding surface (FFS) is used as a standard or useful marker in optimizing chronostratigraphic and lithostratigraphic boundaries.

地层方面，进一步强调以初始海泛面(FFS)作为优化地层“阶”的标准。