Morrison, Wanakah, and Entrada Fms
Jurassic, about 164 to 145 million years old. 32 crags on this site have their map point on it.
The map groups these named formations into this unit: Morrison Formation, Wanakah Formation, Entrada Sandstone.
What the map says
The sheet gives no description for this unit. Lithology: sandstone, mudstone, claystone, minor limestone.
1:500,000 sheet: Horton and others, 2017, U.S. Geological Survey Data Series 1052 (32 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.
Durango
- Turtle Lake Bouldering55 boulder problems · Turtle Lake · 6,946 ft
- I. Watch Crystal31 routes · East Animas · 7,176 ft
- G. Apple Cider26 routes · East Animas · 7,175 ft
- Loiterland23 routes · Sailing Hawks · 7,144 ft · Dakota Sandstone blocks resting on Morrison Formation slopes (not proven in-place) (another source)
- J. Jabba Buttress20 routes · East Animas · 7,174 ft
- Turtle Lake Cliffs16 routes · Turtle Lake · 7,462 ft
- D. Bedrock12 routes · East Animas · 7,202 ft
- Pocket Change Area12 boulder problems · Sailing Hawks · 7,111 ft · Dakota Sandstone blocks resting on Morrison Formation slopes (not proven in-place) (another source)
- Moria11 boulder problems · Sailing Hawks · 7,268 ft · Dakota Sandstone blocks resting on Morrison Formation slopes (not proven in-place) (another source)
- Boulderfield8 boulder problems · Sailing Hawks · 7,151 ft · Dakota Sandstone blocks resting on Morrison Formation slopes (not proven in-place) (another source)
- C. Stargazer7 routes · East Animas · 7,139 ft
- E. Byrd's6 routes · East Animas · 7,136 ft
- Heaven On Earth Boulder5 boulder problems · Area 071 · 8,975 ft
- Ship Rock Boulder5 boulder problems · Area 071 · 8,809 ft
- Graysill Boulder4 boulder problems · Area 071 · 8,970 ft
- Lego Tower4 boulder problems · Sailing Hawks · 7,252 ft · Dakota Sandstone blocks resting on Morrison Formation slopes (not proven in-place) (another source)
- F. Maxx3 routes · East Animas · 7,161 ft
- Falls Creek Cliffs3 routes · 7,115 ft
- Little John3 boulder problems · Sailing Hawks · 7,094 ft · Dakota Sandstone blocks resting on Morrison Formation slopes (not proven in-place) (another source)
- Jude's Spot2 boulder problems · Sailing Hawks · 7,087 ft · Dakota Sandstone blocks resting on Morrison Formation slopes (not proven in-place) (another source)
- Lorax Area2 boulder problems · Sailing Hawks · 7,162 ft · Dakota Sandstone blocks resting on Morrison Formation slopes (not proven in-place) (another source)
- Seek and Find Boulder1 boulder problem · Area 071 · 8,809 ft
- [Redacted]1 boulder problem · Area 071 · 8,983 ft
- Unnamed Slab1 route · West Animas · 7,049 ft