Rearguard Mountain

Rearguard Mountain is a 2,744-metre (9,003-foot) summit located within Mount Robson Provincial Park in British Columbia, Canada. It is part of the Rainbow Range which is a sub-range of the Canadian Rockies. Its nearest higher peak is Mount Robson, 4.0 km (2.5 mi) to the southwest.[1] Rearguard is situated between Berg Lake and the Robson Glacier.

Rearguard Mountain
Rearguard Mountain
Highest point
Elevation2,744 m (9,003 ft) [1]
Prominence454 m (1,490 ft) [1]
Parent peakMount Robson (3959 m)[1]
Coordinates53°08′38″N 119°07′35″W [2]
Geography
Rearguard Mountain
Rearguard Mountain
Rearguard Mountain (Canada)
Parent rangeRainbow Range
Canadian Rockies
Topo mapNTS 83E/03
Geology
Age of rockCambrian
Type of rocksedimentary rock
Climbing
First ascent1913 Alpine Club of Canada party[1]
Easiest routeGlacier travel and scrambling scree[3]
Rearguard Mountain with Mount Robson

History

It was named in 1922 by the Interprovincial Boundary Survey to describe the point of view of those approaching Mount Robson since the mountain is located at the rear of Robson.[4]

The mountain's name was made official on February 1, 1923, by the Geographical Names Board of Canada.[2] It was labelled on Arthur O. Wheeler's 1911 topographic map of Mount Robson.[5]

The first ascent was made in 1913 by an Alpine Club of Canada party.[1]

Climate

Based on the Köppen climate classification, Rearguard Mountain is located in a subarctic climate zone with cold, snowy winters, and mild summers.[6] Temperatures can drop below −20 °C with wind chill factors below −30 °C. In terms of favorable weather, June through September are the best months to climb. Precipitation runoff from the mountain drains into the Robson River.

Geology

The mountain is composed of sedimentary rock laid down during the Precambrian to Jurassic periods and pushed east and over the top of younger rock during the Laramide orogeny.[7]

See also

References
  1. "Rearguard Mountain". Bivouac.com. Retrieved 2018-12-14.
  2. "Rearguard Mountain". Geographical Names Data Base. Natural Resources Canada. Retrieved 2018-12-14.
  3. http://www.explor8ion.com/ski/rearguard.html Explor8ion, Rearguard Mountain
  4. Rearguard Mountain PeakFinder
  5. https://apps.gov.bc.ca/pub/bcgnws/names/23375.html BC Geographical Names
  6. 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.
  7. Gadd, Ben (2008). "Geology of the Rocky Mountains and Columbias". Cite journal requires |journal= (help)

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