Haystack Butte
Climate
Based on the Köppen climate classification, Haystack Butte 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 McDonald Creek, thence Lake McDonald.
Geology
Like other mountains in Glacier National Park, Haystack Butte Tail 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 bulk of the peak is composed of limestone of the Siyeh Formation, with a diorite cap.
Gallery
See also
- Geology of the Rocky Mountains
- List of mountains and mountain ranges of Glacier National Park (U.S.)
References
- ^ "Haystack Butte, Montana". Peakbagger.com. Retrieved 2021-08-19.
- ^ "Haystack Butte - 7,486' MT". listsofjohn.com. Retrieved 2021-08-19.
- ^ "Haystack Butte". Geographic Names Information System. United States Geological Survey, United States Department of the Interior. Retrieved 2021-08-19.
- ^ 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) - ^ James L. Dyson, The Geologic Story of Glacier National Park