Donoho Peak

Donoho Peak is a 6,696-foot (2,041 meter) mountain summit located in the Wrangell Mountains, in the U.S. state of Alaska. The peak is situated in Wrangell-St. Elias National Park and Preserve, 6 mi (10 km) north-northwest of Kennecott, and 9 mi (14 km) north of McCarthy, at the confluence of the Kennicott Glacier and Root Glacier. The peak's name was reported in 1931 by the United States Geological Survey.[3] The mountain lies within the Copper River drainage basin. Bears frequent the Donoho Peak and Donoho Lakes area. An ascent of the mountain involves 14 miles round-trip from Kennecott to the summit, including crossing the Root Glacier and gully scramble via the south aspect of the mountain. Ruins of the Regal Mine remain at an elevation of 5,440 feet on the south slope of the mountain. Only small amounts of copper ore were ever produced, however. On a clear day the summit of Donoho Peak offers views of Mount Blackburn to the northwest and the Stairway Icefall on Regal Mountain to the north-northeast.

Donoho Peak
Donoho Peak, south aspect
Highest point
Elevation6,696 ft (2,041 m) [1]
Prominence1,496 ft (456 m) [1]
Parent peakBonanza Peak
Isolation3.68 mi (5.92 km) [2]
Coordinates61°33′25″N 142°58′20″W [3]
Geography
Donoho Peak
Location of Donoho Peak in Alaska
LocationWrangell-St. Elias National Park
Valdez-Cordova Borough
Alaska, United States
Parent rangeWrangell Mountains
Topo mapUSGS McCarthy C-6
Geology
Age of rockCretaceous
Type of rockGreenstone, Limestone
Climbing
Easiest routeScrambling, Glacier crossing

Climate

Based on the Köppen climate classification, Donoho Peak is located in a subarctic climate zone with long, cold, snowy winters, and cool summers.[4] Weather systems coming off the Gulf of Alaska are forced upwards by the Wrangell Mountains (orographic lift), causing heavy precipitation in the form of rainfall and snowfall. Temperatures can drop below −20 °C with wind chill factors below −30 °C. The months May through June offer the most favorable weather for viewing and climbing.

Geology

Donoho Peak and the ridge extending to the north separate Gates and Root Glaciers. The north-dipping section exposes most of the definitive Triassic and Jurassic units of the Wrangellia Terrane, overlain unconformably at the north end of the ridge by the Miocene Frederika Formation and the Miocene to Holocene Wrangell Lava. The peak is underlain by a conspicuous overturned syncline, which is cored by Nizina limestone, and forms a gray-colored zigzag on the east face of the peak.[5]

See also

References
  1. "Donoho Peak, Alaska". Peakbagger.com. Retrieved 2020-02-12.
  2. Donoho Peak, listsofjohn.com
  3. "Donoho Peak". Geographic Names Information System. United States Geological Survey. Retrieved 2020-02-12.
  4. Peel, M. C.; Finlayson, B. L.; McMahon, T. A. (2007). "Updated world map of the Köppen−Geiger climate classification". Hydrol. Earth Syst. Sci. 11. ISSN 1027-5606.
  5. https://www.nps.gov/wrst/learn/nature/upload/A-Geologic-Guide-color-version-for-web.pdf
  • West side of Donoho Peak shows limestone overlying darker greenstone.
  • Donoho Peak (left) with historic Kennecott Mill site
  • Mt. Blackburn, Donoho Peak, and Kennecott Mill town.
  • Donoho Peak's east aspect above Root Glacier
  • Aerial view of north aspect
  • Donoho Peak centered
  • Donoho Lakes in Donoho Basin
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