Thickness varies from a feather edge against the Uncompahgre highlands to the east to over  in southwestern Utah. The thickness varies greatly in the Paradox Basin, where the Moenkopi is thin to nonexistent on the crests of salt anticlines and over  thick in the corresponding synclines.
The thickness of this formation exhibits considerable variation, from a very fine edge against the Uncompahgre highlands to over  in southwestern Utah. In the Paradox Basin, it is notably thin on the crest of salt anticlines but thick in the adjacent synclines.