View source for Lewis Range

{{short description|Mountain range in Montana, United States and Alberta, Canada}}
{{Distinguish|Lewis Range (Coast Mountains)}}
{{Use mdy dates|date=January 2025}}
{{More citations needed|date=January 2016}}
{{Infobox mountain
 | name          = Lewis Range
 | photo         = Mount Cleveland.jpg
 | photo_caption = [[Mount Cleveland (Montana)|Mt. Cleveland]] is the highest peak in the Lewis Range
 | country       = {{enum|United States|Canada}}
 | subdivision1_type = Province/State 
 | subdivision1  = {{enum|[[Montana]]|[[Alberta]]}}
 | parent        = [[Border Ranges (Rocky Mountains)|Border Ranges]]<ref>{{cite report|last=Holland|first=Stuart S.|url=http://cmscontent.nrs.gov.bc.ca/geoscience/PublicationCatalogue/Bulletin/BCGS_B048.pdf|archive-url=https://web.archive.org/web/20181114024907/http://cmscontent.nrs.gov.bc.ca/geoscience/PublicationCatalogue/Bulletin/BCGS_B048.pdf|archive-date=2018-11-14|title=Landforms of British Columbia: A Physiographic Outline|publisher=[[Government of British Columbia]]|year=1976|pages=84, 85|asin=B0006EB676|oclc=601782234}}</ref>
 | map           = USA Montana#USA#Canada Alberta#Canada
 | map_relief    = 1
 | label_position    = 
 | map_caption   = Location in Montana##Location in the United States##Location in Alberta##Location in Canada
 | range_coordinates = 
 | range_coordinates_ref= 
 | geology       = 
 | orogeny       = Lewis Overthrust 
 | length_mi     = 
 | length_orientation= 
 | width_mi      = 
 | width_orientation = 
 | highest       = [[Mount Cleveland (Montana)|Mount Cleveland]]
 | highest_location  = Montana
 | elevation_ft  = 10479
 | elevation_ref = <ref name=ngs>{{cite ngs |id=TM1009 |name=Cleveland |accessdate=2023-06-07}}</ref>
 | coordinates   = {{coord|48|55|29|N|113|50|53|W|type:mountain_scale:100000|format=dms|display=inline,title}}
 | coordinates_ref   = <ref name=ngs/>
 | listing       = {{unbulleted list|[[List of mountain ranges in Montana|Mountain ranges of Montana]]|[[List of mountain ranges of Alberta|Mountain ranges of Alberta]]}}
}}

The '''Lewis Range''' is a [[mountain range]] located in the [[Rocky Mountains]] of northern [[Montana]], United States and extreme southern [[Alberta]], Canada. It was formed as a result of the [[Lewis Overthrust]], a geologic thrust fault involving the overlying of younger [[Cretaceous]] rocks by older [[Proterozoic]] rocks. The range is located within [[Waterton Lakes National Park]] in [[Alberta]], Canada and [[Glacier National Park (U.S.)|Glacier National Park]] and the [[Bob Marshall Wilderness Complex]] in [[Montana]], United States. The highest peak is [[Mount Cleveland (Montana)|Mount Cleveland]] at {{convert|10479|ft|m|0|abbr=on}}.

==Geography==
The Lewis Range is within [[Waterton Lakes National Park]] in Canada, and in [[Glacier National Park (U.S.)|Glacier National Park]] in Montana. The [[Continental Divide of the Americas|Continental Divide]] spans much of the uppermost sections of the range. Major peaks in the range include [[Mount Cleveland (Montana)|Mount Cleveland]] ({{convert|10,479|ft|m|abbr=on|disp=semicolon}}), which is the highest peak in the range and in Glacier National Park.<ref>{{cite gnis |id=767937 |name=Lewis Range }}</ref> Other prominent peaks include [[Mount Stimson]] ({{convert|10,142|ft|m|abbr=on|disp=semicolon}}), [[Mount Jackson (Montana)|Mount Jackson]] ({{convert|10,052|ft|m|abbr=on|disp=semicolon}}), [[Mount Siyeh]] ({{convert|10,014|ft|m|abbr=on|disp=semicolon}}), [[Going to the Sun Mountain]], ({{convert|9,642|ft|m|abbr=on|disp=semicolon}}) and the isolated [[Chief Mountain]] ({{convert|9,080|ft|m|abbr=on|disp=semicolon}}). This sharp range begins north of [[Marias Pass]] and includes [[Logan Pass]] which bisects Glacier National Park east to west.

==Geology==
Formed by the [[Lewis Overthrust]] beginning 170 million years ago, an enormous slab of [[Precambrian]] rocks {{convert|3|mi|km}} thick, {{convert|50|mi|km}} wide and {{convert|160|mi|km}} long faulted and slid over newer rocks of the [[Cretaceous]] period. In this relatively rare occurrence, older rocks are now positioned above newer ones.{{citation needed|date=January 2016}}

==See also==
* [[List of mountains and mountain ranges of Glacier National Park (U.S.)]]

==References==
{{reflist}}

==External links==
* {{cite web | last = Glacier National Park | url = https://www.nps.gov/glac/learn/education/geology.htm#Lewis | title = Lewis Overthrust Fault | work = Geology | access-date = 2023-06-07 }}
*{{Commons category-inline}}

{{Montana}}
{{Authority control}}

[[Category:Lewis Range| ]]
[[Category:Mountain ranges of Alberta]]
[[Category:Mountain ranges of Montana]]
[[Category:Landforms of Flathead County, Montana]]
[[Category:Landforms of Glacier County, Montana]]
[[Category:Glacier National Park (U.S.)]]<!--mountain range-->
[[Category:Mountains of Glacier National Park (U.S.)]]