{{short description|Mountain in Glacier National Park, US}} {{About|a mountain in Montana|the shield volcano in Oregon|Olson Mountain (Jackson County, Oregon)}} {{Use mdy dates|date=January 2025}} {{Infobox mountain | name = Olson Mountain | image = Olson Mountain reflected in Waterton Lake.jpg | image_caption = Olson Mountain reflected in Waterton Lake | elevation_ft = 7913 | elevation_ref = <ref name=pb>{{cite peakbagger|pid=50290|title=Olson Mountain, Montana|accessdate=2019-01-17}}</ref> | prominence_ft = 793 | prominence_ref = <ref name=pb/> | isolation_mi = 1.43 | isolation_ref = <ref name="listsofjohn">{{cite web|url=https://listsofjohn.com/peak/26696|title=Olson Mountain - 7,913' MT|website=listsofjohn.com|accessdate=2021-10-08}}</ref> | parent_peak = Campbell Mountain<ref name="listsofjohn"/> | location = Glacier National Park<br/>Glacier County, Montana, U.S. | map = USA Montana#USA | map_relief = 1 | map_caption = Location in Montana##Location in the United States | label_position = bottom | range = Livingston Range | coordinates = {{coord|48.9572|N|113.9375|W|type:mountain_region:US-WA_scale:100000_source:gnis|format=dms|display=inline,title}} | coordinates_ref = <ref>{{Cite web|url=https://listsofjohn.com/peak/26696|title = Olson Mountain - 7,913' Montana}}</ref> | topo = USGS ''Porcupine Ridge'' | first_ascent = | easiest_route = }}
'''Olson Mountain''',<ref name="gnis">{{cite gnis | id = 774966 | name = Olson Mountain | accessdate = 2019-01-17}}</ref> also known as '''Mount Olson''', is a 7,913-foot-elevation (2,412 m) mountain summit located in the Livingston Range, of Glacier National Park in the U.S. state of Montana. Olson Mountain rises more than {{convert|3700|ft|m}} above the western shore of Waterton Lake. The mountain was named for a surveyor on the International Boundary Survey, with the name officially adopted in 1929.<ref name="gnis"/> The nearest higher peak is Campbell Mountain, {{convert|1.13|mi|km}} to the north, and Citadel Peaks is two miles (3.2 km) to the south.<ref name=pb/> Precipitation runoff from the mountain drains into Olson Creek before it empties to Waterton Lake.
==Climate== Based on the Köppen climate classification, Olson Mountain is located in a subarctic climate zone characterized by long, usually very cold winters, and short, cool to mild summers.<ref name=KGcc2007>{{Cite Köppen-Geiger cc 2007}}</ref> Temperatures can drop below −10 °F with wind chill factors below −30 °F.
==Geology== Like other mountains in Glacier National Park, Olson 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 {{convert|3|mi|km|1|abbr=on}} thick, {{convert|50|mi|km}} wide and {{convert|160|mi|km}} long over younger rock of the cretaceous period.<ref name=gadd>{{cite journal|title=Geology of the Rocky Mountains and Columbias |author=Gadd, Ben |year=2008}}</ref>
== Gallery == <div style="max-width: 500px;"> <gallery mode=slideshow> File:Waterton Lake and reflections (crop).jpg|Left to right: Kootenai Peak, Citadel Peaks, Porcupine Ridge, Olson Mountain, Campbell Mountain. File:Goat Haunt Ranger Station view of Olsen and Campbell.jpg|Olson Mountain (left) and Campbell Mountain (right) reflected in Waterton Lake </gallery> </div>
==See also== * List of mountains and mountain ranges of Glacier National Park (U.S.) * Geology of the Rocky Mountains
==References== {{reflist}}
==External links== * Weather forecast: [https://www.yr.no/place/United_States/Montana/Olson_Mountain~5670034/ Olson Mountain] * National Park Service web site: [https://www.nps.gov/glac/index.htm Glacier National Park]
Category:Livingston Range Category:Mountains of Glacier County, Montana Category:Mountains of Glacier National Park (U.S.) Category:Mountains of Montana Category:Two-thousanders of the United States