Piegan Mountain (9,225 feet (2,812 m)) is located in the Lewis Range, Glacier National Park in the U.S. state of Montana.[3] Piegan Glacier is located in a cirque immediately southeast of the summit.
Geology
Like other mountains in Glacier National Park, Piegan Mountain 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.[4]
Climate
Based on the Köppen climate classification, it is located in an alpine subarctic climate zone with long, cold, snowy winters, and cool to warm summers.[5] Temperatures can drop below −10 °F with wind chill factors below −30 °F.
See also
References
- ^ a b "Piegan Mountain, Montana". Peakbagger.com. Retrieved December 27, 2018.
- ^ "Piegan Mountain". Geographic Names Information System. United States Geological Survey, United States Department of the Interior. Retrieved December 27, 2018.
- ^ Logan Pass, MT (Map). TopoQwest (United States Geological Survey Maps). Retrieved December 27, 2018.
- ^ Gadd, Ben (2008). "Geology of the Rocky Mountains and Columbias".
{{cite journal}}: Cite journal requires|journal=(help) - ^ Peel, M. C.; Finlayson, B. L.; McMahon, T. A. (2007). "Updated world map of the Köppen−Geiger climate classification". Hydrol. Earth Syst. Sci. 11 (5): 1633–1644. Bibcode:2007HESS...11.1633P. doi:10.5194/hess-11-1633-2007. ISSN 1027-5606. S2CID 9654551.
External links
- National Park Service web site: Glacier National Park
- Piegan Mountain weather: Mountain Forecast