Morrison Fm and Entrada Sandstone
Sandstone. Jurassic, about 164 to 145 million years old. 9 crags on this site have their map point on it.
The map groups these named formations into this unit: Morrison Formation, Entrada Sandstone.
What the map says
The sheet gives no description for this unit. Lithology: claystone, mudstone, sandstone.
1:500,000 sheet: Horton and others, 2017, U.S. Geological Survey Data Series 1052 (9 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.
Eagle/Vail/Minturn/Red Cliff
- Upper Tier (Bocco Area)25 routes · Wolcott Crags and Boulders · 7,286 ft
- Big Ass Boulder16 boulder problems · Wolcott Crags and Boulders · 6,897 ft
- Cave Boulder7 boulder problems · Wolcott Crags and Boulders · 6,897 ft
- Waterside Boulder6 boulder problems · Wolcott Crags and Boulders · 6,897 ft
- Eagle Wall4 routes · Wolcott Crags and Boulders · 6,897 ft
- Lotus Boulder4 boulder problems · Wolcott Crags and Boulders · 6,897 ft
- Campsite Boulder2 boulder problems · Wolcott Crags and Boulders · 6,897 ft
- The Wash2 boulder problems · Wolcott Crags and Boulders · 7,125 ft
- The First Tier1 route · Wolcott Crags and Boulders · 6,897 ft