Arras Mountain is a mountain summit located in the

Canadian Rockies The Canadian Rockies (french: Rocheuses canadiennes) or Canadian Rocky Mountains, comprising both the Alberta Rockies and the British Columbian Rockies, is the Canadian segment of the North American Rocky Mountains. It is the easternmost part ...

of British Columbia, Canada. Arras Mountain is situated immediately northeast of the confluence of Icefall Brook with

Valenciennes River The Valenciennes River is a tributary of the Bush River, entering that river just above its mouth into Kinbasket Lake, the reservoir on the Columbia River created by the Mica Dam in southeastern British Columbia, Canada. The Valenciennes was origi ...

, east-southeast of Rostrum Peak, and west of

Valenciennes Mountain Valenciennes Mountain is a mountain summit located in the Canadian Rockies of British Columbia, Canada. Valenciennes Mountain is situated at the head of Valenciennes River, one kilometre west of the British Columbia-Alberta border, and the same d ...

, and all are in the Kootenay Land District. The peak was named in 1921 to commemorate the World War I battlefield at

Arras, France Arras ( , ; pcd, Aro; historical nl, Atrecht ) is the prefecture of the Pas-de-Calais department, which forms part of the region of Hauts-de-France; before the reorganization of 2014 it was in Nord-Pas-de-Calais. The historic centre of the A ...

, where Canadian troops fought in the first battle April 1917, and in the second battle August 1918. The name was officially adopted in 1924 when approved by the

Geographical Names Board of Canada The Geographical Names Board of Canada (GNBC) is a national committee with a secretariat in Natural Resources Canada, part of the Government of Canada, which authorizes the names used and name changes on official federal government maps of Canada ...

Geology

Arras Mountain is composed of sedimentary rock laid down during the

Precambrian The Precambrian (or Pre-Cambrian, sometimes abbreviated pꞒ, or Cryptozoic) is the earliest part of Earth's history, set before the current Phanerozoic Eon. The Precambrian is so named because it preceded the Cambrian, the first period of the ...

to Jurassic periods. Formed in shallow seas, this sedimentary rock was pushed east and over the top of younger rock during the Laramide orogeny. The northwest aspect of the mountain conspicuously displays vertically-tilted

anticlinal Anticlinal may refer to: *Anticline, in structural geology, an anticline is a fold that is convex up and has its oldest beds at its core. *Anticlinal, in stereochemistry, a torsion angle between 90° to 150°, and –90° to –150°; see Alkane_st ...

strata. Topographic relief is significant as the west aspect of the peak rises over above Icefall Brook in less than two kilometres.

Climate

Based on the Köppen climate classification, Arras Mountain is located in a

subarctic climate The subarctic climate (also called subpolar climate, or boreal climate) is a climate with long, cold (often very cold) winters, and short, warm to cool summers. It is found on large landmasses, often away from the moderating effects of an ocean, ge ...

zone with cold, snowy winters, and mild summers. Winter temperatures can drop below −20 °C with wind chill factors below −30 °C. Precipitation runoff drains to the Icefall Brook and Valenciennes River.

References

External links

* Weather
Arras Mountain
{{Canadian Rockies, state=collapsed Three-thousanders of British Columbia Canadian Rockies Kootenay Land District

Geology

Climate

See also

References

External links