Angel Wing (Glacier National Park)

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Angel Wing
Angel Wing from Grinnell Glacier Trail.jpg
North aspect (centered), from Grinnell Glacier Trail
Highest point
Elevation 7,430 ft (2,265 m) [1]
Prominence 470 ft (140 m) [1]
Parent peak Mount Gould (9,557 ft)
Isolation 0.61 mi (0.98 km) [2]
Coordinates 48°45′26″N113°42′42″W / 48.7573144°N 113.7117691°W / 48.7573144; -113.7117691 [3]
Geography
USA Montana relief location map.jpg
Red triangle with thick white border.svg
Angel Wing
Location in Montana
Usa edcp relief location map.png
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Angel Wing
Location in the United States
Location Glacier National Park
Glacier County, Montana, U.S.
Parent range Lewis Range
Topo map USGS Many Glacier
Geology
Age of rock Middle Proterozoic
Type of rock Sedimentary rock

Angel Wing is a 7,430-foot (2,260-meter) elevation mountain summit located in the Lewis Range, of Glacier National Park in the U.S. state of Montana. It is situated one mile east of the Continental Divide, in Glacier County. It can be seen from the Many Glacier area, and up close from the Grinnell Glacier Trail. Topographic relief is significant as the north aspect rises nearly 2,500 feet (760 meters) above Grinnell Lake in one-half mile.

Contents

Climate

Based on the Köppen climate classification, Angel Wing is located in an alpine subarctic climate zone with long, cold, snowy winters, and cool to warm summers. [4] Temperatures can drop below −10 °F with wind chill factors below −30 °F. Precipitation runoff from the peak drains into Grinnell and Cataract Creeks, which are part of the St. Mary River drainage basin.

Geology

Like other mountains in Glacier National Park, Angel Wing is composed of sedimentary rock laid down during the Precambrian to Jurassic periods. Formed in shallow seas, this sedimentary rock was initially uplifted beginning 170 million years ago when the Lewis Overthrust fault pushed an enormous slab of precambrian rocks 3 mi (4.8 km) thick, 50 miles (80 km) wide and 160 miles (260 km) long over younger rock of the cretaceous period. [5] The summit is composed of Empire Formation of the Neogene period, and it overlays the Grinnell Formation which is a layer of sandstone and argillite. [6]

See also

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References

  1. 1 2 "Angel Wing, Montana". Peakbagger.com. Retrieved 2021-08-08.
  2. "Angel Wing - 7,430' MT". listsofjohn.com. Retrieved 2021-08-08.
  3. "Angel Wing". Geographic Names Information System . United States Geological Survey, United States Department of the Interior . Retrieved 2021-08-08.
  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: 1633–1644. ISSN   1027-5606.
  5. Gadd, Ben (2008). "Geology of the Rocky Mountains and Columbias".{{cite journal}}: Cite journal requires |journal= (help)
  6. Rockwell, David B, Exploring Glacier National Park, 2002, Falcon, ISBN   9780762723546, pages 10, 19.