Angel Wing (Glacier National Park)
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. 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. 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.
Gallery
See also
- Geology of the Rocky Mountains
- List of mountains and mountain ranges of Glacier National Park (U.S.)
References
- ^ "Angel Wing, Montana". Peakbagger.com. Retrieved 2021-08-08.
- ^ "Angel Wing - 7,430' MT". listsofjohn.com. Retrieved 2021-08-08.
- ^ "Angel Wing". Geographic Names Information System. United States Geological Survey, United States Department of the Interior. Retrieved 2021-08-08.
- ^ 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.
- ^ Gadd, Ben (2008). "Geology of the Rocky Mountains and Columbias".
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(help) - ^ Rockwell, David B, Exploring Glacier National Park, 2002, Falcon, ISBN 9780762723546, pages 10, 19.
External links
- Weather forecast: Angel Wing
- Summit view: YouTube