{{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 | image = Mount Cleveland.jpg | image_caption = 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<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 | 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|Mountain ranges of Montana|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 and the Bob Marshall Wilderness Complex in Montana, United States. The highest peak is 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 in Montana. The Continental Divide spans much of the uppermost sections of the range. Major peaks in the range include 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 ({{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.)