What do you mean by "global to some extent?" Are you claiming it was a global shallow flood that only hurt coasts? Are you saying it was only certain continents?
Meaning that the coasts were probably the most affected and what would have standed behind mountains would have suffered less damages.
The sediment movement something that ridiculous would have caused would have been very noticable. It would be impossible to cover up. There is no evidence to support such a wild idea.
