Wasatch Fm (including Fort Union equivalent at base) and Ohio Creek Fm
Paleogene, about 66 to 54 million years old. 5 crags on this site have their map point on it.
The map groups these named formations into this unit: Wasatch Formation, Ohio Creek Formation.
What the map says
Claystone, mudstone, sandstone, and conglomerate Lithology: claystone, minor mudstone, shale, sandstone, conglomerate.
1:500,000 sheet: Horton and others, 2017, U.S. Geological Survey Data Series 1052 (5 crags). A contact line at that scale is about 500 m wide on the ground.
Served by Macrostrat (CC BY 4.0). The wording is the map's own, quoted as a fact about the mapped unit, not about any one wall.