Biotitic gneiss, schist, and migmatite
Gneiss, schist & quartzite. Paleoproterozoic, about 2,500 to 1,600 million years old. 85 crags on this site have their map point on it.
What the map says
Locally contains minor hornblende gneiss, calc-silicate rock, quartzite, and marble. Derived principally from sedimentary rocks Lithology: biotite gneiss, schist, migmatite, minor gneiss, calc silicate schist, marble.
1:500,000 sheet: Horton and others, 2017, U.S. Geological Survey Data Series 1052 (85 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
- The Aircraft Carrier5 routes and 18 boulder problems · Aircraft Carrier, The · 8,793 ft
- The Anti-Gravity Wall15 boulder problems · Gravity Garden aka The Mushroom Garden, The · 8,720 ft
- Homestake Road Crag12 routes · 8,887 ft
- Napoleon Wall11 routes · Gilman Canyon · 8,622 ft
- The Whatchamacallit Boulder9 boulder problems · Gravity Garden aka The Mushroom Garden, The · 8,781 ft
- The Minturn Mile Boulder9 boulder problems · Klettergarden, The · 8,818 ft
- Roof Rock7 routes · 8,847 ft
- Upper Tier Right6 routes · Hornsilver · 9,067 ft
- Boulder D aka Prominent Block6 boulder problems · Klettergarden, The · 8,805 ft
- The Mint Boulder5 boulder problems · Gravity Garden aka The Mushroom Garden, The · 8,720 ft
- Upper Tier Left5 routes · Hornsilver · 9,169 ft
- Boulder I aka Marshall's Boulder5 boulder problems · Klettergarden, The · 8,818 ft
- Gilman Canyon Crags4 routes · Gilman Canyon · 8,576 ft
- Lower Tier4 routes · Hornsilver · 9,067 ft
- Boulder B aka Two Cylinder Boulder3 boulder problems · Klettergarden, The · 8,818 ft
- Giant Boulder Uphill From Minturn Mile Boulder3 boulder problems · Klettergarden, The · 8,818 ft
- Fraggle Rock2 routes · 8,899 ft
- Boulder C aka The Slab2 boulder problems · Klettergarden, The · 8,818 ft
- Boulder E aka The Machine Boulder aka Mile Boulder2 boulder problems · Klettergarden, The · 8,818 ft
- Trango Tower1 route · Gilman Canyon · 8,651 ft
- Boulder A1 boulder problem · Klettergarden, The · 8,818 ft
- Boulder G1 boulder problem · Klettergarden, The · 8,818 ft
- Tooth Fairy Boulder1 boulder problem · Klettergarden, The · 8,786 ft
Alpine Rock
- Quandary Peak7 routes · 14,234 ft
- Mount Neva3 routes · Indian Peaks · 12,789 ft
- Navajo Peak3 routes · Indian Peaks · 13,287 ft
- Chimneys of Treasure2 routes · 12,478 ft
- Peak C2 routes · Gore Mountain Range · 13,202 ft
- Arapahoe Peaks2 routes · Indian Peaks · 13,055 ft
- Buffalo Mountain1 route · Gore Mountain Range · 12,700 ft
- Eagle's Nest1 route · Gore Mountain Range · 13,158 ft
- East Partner Peak (aka Peak V)1 route · Gore Mountain Range · 11,353 ft
- Peaks X, Y, and Z1 route · Gore Mountain Range · 13,094 ft
- Valhalla Peak, Thor Tower1 route · Gore Mountain Range · 11,353 ft
- West Partner Peak1 route · Gore Mountain Range · 11,353 ft
- Fool's Peak1 route · Holy Cross Wilderness · 12,876 ft
- Gold Dust Peak1 route · Holy Cross Wilderness · 13,382 ft
- Mount of the Holy Cross1 route · 13,154 ft
Independence Pass
- Wild Rock10 routes · Wild Rock Area · 10,359 ft
- The Wave7 routes · Wild Ridge Area · 10,704 ft
- Storm Jumper Wall5 routes · Ptarmigan Creek Area · 10,295 ft
- The Coral4 routes · Wild Ridge Area · 10,704 ft
- Rip Rap4 routes · Wild Ridge Area · 10,704 ft
- Bart Boulder3 boulder problems · Wild Rock Area · 10,359 ft
- Yardstick Boulder3 boulder problems · Wild Rock Area · 10,359 ft
- Headlands2 routes · Wild Ridge Area · 10,704 ft
- Outer Banks2 routes · Wild Ridge Area · 10,704 ft
- Guide Route1 route · Wild Ridge Area · 10,674 ft
- Wild Ridge1 route · Wild Ridge Area · 10,653 ft
- Wild Tower1 route · Wild Ridge Area · 10,704 ft
Canon City
10 Mile Canyon
Grand County / Fraser Valley
Estes Park Valley
- Mary's Bust Area50 routes and 1 boulder problem · Big Thompson Canyon · 6,975 ft · gneiss and schist (another source)
- Jug Dome aka Anne's Rock13 routes · Big Thompson Canyon · 7,383 ft · gneiss and schist (another source)
- Stone Point6 routes · Big Thompson Canyon · 6,834 ft · gneiss and schist (another source)
- Castle Slab1 route · Fall River Road (US 34 West) · 6,853 ft