Lewis Range

Geobox | Range
name=Lewis Range


image_caption=Mount Cleveland is the highest peak in the Lewis Range
country=United States| country1=Canada
region=Montana| region1=Alberta
parent=Rocky Mountains
geology= | orogeny=Lewis Overthrust | border=
length_imperial=| length_orientation=
width_imperial= | width_orientation=
highest=Mount Cleveland
highest_elevation_imperial=10466
highest_lat_d=48|highest_lat_m=55|highest_lat_s=29|highest_lat_NS=N
highest_long_d=113|highest_long_m=50|highest_long_s=53|highest_long_EW=W


map_caption=The Lewis Range is a mountain range located in the Rocky Mountains of northern Montana, U.S. and extreme southern Alberta, Canada. Formed by the Lewis Overthrust beginning 170 million years ago, an enormous slab of Precambrian rocks 3 miles (4.8 km) thick, mi to km|50 wide and mi to km|160 long faulted and slid over newer rocks of the Cretaceous period. In this relatively rare occurrence, older rocks are now positioned above newer ones.

The Lewis Range is within Waterton Lakes National Park in Canada, and in Glacier National Park and the Bob Marshall Wilderness Complex located in Flathead and Lewis and Clark National Forests in Montana. The Continental Divide spans much of the uppermost sections of the range. Major peaks in the range include Mount Cleveland (10,466 ft/3,185 m), which is the highest peak in the range and in Glacier National Park. Other prominent peaks include Mount Stimson (10,142 ft/3,091 m), Mount Jackson (10,052 ft/3,064 m), Mount Siyeh (10,014 ft/3,052 m), Going to the Sun Mountain, (9,642 ft/2,939 m) and the isolated Chief Mountain (9,080 ft/2,768 m). The Chinese wall in the Bob Marshall Wilderness is a 1,000 foot (304 m) high feature that runs for mi to km|40. Major passes include Marias Pass and Logan Pass which bisects Glacier National Park east to west.

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