Crowsnest Mountain

From Wikipedia, the free encyclopedia
Jump to: navigation, search
Crowsnest Mountain
Crowsnest Mountain 2010.jpg
Crowsnest Mountain, March 2010
Highest point
Elevation 2,785 m (9,137 ft) [2]
Prominence 925 m (3,035 ft) [1]
Parent peak Mount Erris[1]
Listing Mountains of Alberta
Coordinates 49°42′13″N 114°34′26″W / 49.70361°N 114.57389°W / 49.70361; -114.57389Coordinates: 49°42′13″N 114°34′26″W / 49.70361°N 114.57389°W / 49.70361; -114.57389
Geography
Crowsnest Mountain is located in Alberta
Crowsnest Mountain
Crowsnest Mountain
Parent range Crowsnest Range
Topo map NTS 82G/10
Geology
Age of rock Paleozoic (upper), Mesozoic (lower)
Mountain type Limestone[2]
Climbing
First ascent July 28, 1904 by Tom Wilson, Christian Hasler sr., Friedrich Michel[2]
Easiest route moderate scramble

Crowsnest Mountain is a scenic mountain in the southern Canadian Rockies of southwestern Alberta, Canada. It can be seen from Alberta Highway 3 west of the town of Coleman in the Crowsnest Pass. The mountain was originally named by the local Cree Indians due to the ravens that nested in the area.[2] The scrambling route on the north side was first ascended in 1915.[2]

Geology[edit]

The grey rocks exposed in the cliffs on the upper part of Crowsnest Mountain are limestones and shales of Late Devonian to Early Mississippian age (the Palliser at the base, overlain by the Exshaw and Banff, with the Livingstone Formation at the summit). They were moved up from the west along the Lewis thrust fault and emplaced over younger rocks (the Late Cretaceous Belly River Formation) that underlie the wooded lower slopes of the mountain. During that movement they were formed into a broad syncline by fault-bend folding.[4][5]

The Devonian to Mississippian rocks are part of the Lewis thrust sheet which was originally continuous from the High Rock Range immediately to the west. The thrust sheet has since been cut through by erosion along Allison Creek, however, leaving Crowsnest Mountain and its northerly neighbour, Seven Sisters Mountain, standing together as an isolated klippe.[4][5]

References[edit]

  1. ^ a b "Crowsnest Mountain". Bivouac.com. Retrieved 2008-12-31. 
  2. ^ a b c d e "Crowsnest Mountain". PeakFinder.com. Retrieved 2005-07-22. 
  3. ^ "Crowsnest Mountain". Geographical Names Data Base. Natural Resources Canada. Retrieved 2010-07-31. 
  4. ^ a b R.A.Price, 1961. Geological Survey of Canada, Paper 61-24 and Map 35-1961.
  5. ^ a b R.A. Price, 1962. Geologic structure of the central part of the Rocky Mountains in the vicinity of Crowsnest Pass. Journal of the Alberta Society of Petroleum Geologists, vol. 10, no. 7, p. 341-351.