Mancos Shale
Late Cretaceous, about 91 to 84 million years old. 35 crags on this site have their map point on it.
What the map says
In northwest and west-central: Intertongues complexly with units of overlying Mesaverde Group or Fm; lower part consists of a calcareous Niobrara equivalent and Frontier Sandstone and Mowry Shale Members; in areas where the Frontier and Mowry Members (Kmfm), or these and the Dakota Sandstone (Kfd) are distinguished, map unit (Km) consists of shale above Frontier Member. In Southwest: Lower part contains Juana Lopez Member (Kmj) Lithology: shale, sandstone.
1:500,000 sheet: Horton and others, 2017, U.S. Geological Survey Data Series 1052 (33 crags). A contact line at that scale is about 500 m wide on the ground.
Dark-gray to black soft shale; thin sandstone beds at various horizons. Upper beds intertongue with, and grade vertically into Castlegate Sandstone and Blackhawk Formation. Lithology: clastic; shale; sandstone (minor).
1:100,000 sheet: Day and others, 1999, U.S. Geological Survey Open-File Report 99-0427 (2 crags). A contact line at that scale is about 100 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.
Four Corners Area
- G. Pumphouse Right14 routes · Dolores River Canyon (Dove Creek) · 4,953 ft
- F. Pumphouse Left10 routes · Dolores River Canyon (Dove Creek) · 4,958 ft
- H. Ten Mile Crag8 routes · Dolores River Canyon (Dove Creek) · 4,950 ft
- D. Hillbilly Wall7 routes · Dolores River Canyon (Dove Creek) · 4,965 ft
- B. Box Elder Crag6 routes · Dolores River Canyon (Dove Creek) · 4,970 ft
- C. Whiskey Wall5 routes · Dolores River Canyon (Dove Creek) · 4,968 ft
- A. Welcome to D Town1 route · Dolores River Canyon (Dove Creek) · 4,969 ft
- E. Beehive Buttress1 route · Dolores River Canyon (Dove Creek) · 4,963 ft
- I. Wind Tower1 route · Dolores River Canyon (Dove Creek) · 4,959 ft
Pagosa Springs
- West Fork11 boulder problems · 7,084 ft
- Cast Iron Crag7 routes · 7,083 ft
- Piedra River - Upper West aka Never Mind3 routes and 4 boulder problems · Piedra River · 7,693 ft
- Sweet Willie Boulder6 boulder problems · Piedra River · 8,296 ft
- Fire and Blood Crag4 routes · 7,083 ft
- Middle Fork Needles4 routes · 7,083 ft
- The Runaways2 boulder problems · Runaways, The · 7,084 ft
- 36+2 Boulder1 boulder problem · Piedra River · 7,693 ft
Crested Butte
- Mt. Crested Butte2 routes · 9,409 ft
- Offwidth Boulder1 boulder problem · Skyland Boulders · 9,409 ft
- Slab Happy Boulder aka Wedge 21 boulder problem · Skyland Boulders · 9,409 ft
- The Spice Rack1 boulder problem · Skyland Boulders · 9,409 ft
- Zach's Campground1 boulder problem · Skyland Boulders · 9,409 ft