Sawtooth Ridge is an mountain ridge located in Lewis and Clark County,

Montana Montana ( ) is a landlocked U.S. state, state in the Mountain states, Mountain West subregion of the Western United States. It is bordered by Idaho to the west, North Dakota to the east, South Dakota to the southeast, Wyoming to the south, an ...

Description

Sawtooth Ridge is located along the

Rocky Mountain Front The Rocky Mountain Front is a somewhat unified geologic and ecosystem area in North America where the eastern slopes of the Rocky Mountains meet the plains. In 1983, the Bureau of Land Management called the Rocky Mountain Front "a nationally signi ...

, which is a subset of the

Rocky Mountains The Rocky Mountains, also known as the Rockies, are a major mountain range and the largest mountain system in North America. The Rocky Mountains stretch in great-circle distance, straight-line distance from the northernmost part of Western Can ...

. It is situated 45 miles west of Great Falls, in the Sun River Wildlife Management Area. Precipitation runoff from this landform drains into tributaries of the

Sun River The Sun River (also called the Medicine River) is a tributary of the Missouri River in the Great Plains, approximately 130 mi (209 km) long, in Montana in the United States. Geography It rises in the Rocky Mountains in two forks, the ...

Topographic relief Terrain (), alternatively relief or topographical relief, is the dimension and shape of a given surface of land. In physical geography, terrain is the lay of the land. This is usually expressed in terms of the elevation, slope, and orientati ...

is significant as the east aspect rises approximately above the prairie. Castle Reef is 6.94 miles to the north, but Fairview Mountain is considered to be the nearest higher neighbor, 6.57 miles to the south-southwest.

Geology

Sawtooth Ridge is composed of

sedimentary rock Sedimentary rocks are types of rock (geology), rock formed by the cementation (geology), cementation of sediments—i.e. particles made of minerals (geological detritus) or organic matter (biological detritus)—that have been accumulated or de ...

laid down during the

Precambrian The Precambrian ( ; or pre-Cambrian, sometimes abbreviated pC, 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 t ...

Jurassic The Jurassic ( ) is a Geological period, geologic period and System (stratigraphy), stratigraphic system that spanned from the end of the Triassic Period million years ago (Mya) to the beginning of the Cretaceous Period, approximately 143.1 Mya. ...

periods. Formed in shallow seas, this sedimentary rock was pushed east and over the top of younger rock during the

Laramide orogeny The Laramide orogeny was a time period of mountain building in western North America, which started in the Late Cretaceous, 80 to 70 million years ago, and ended 55 to 35 million years ago. The exact duration and ages of beginning and end of the o ...

. The

Lewis Overthrust The Lewis Overthrust is a geologic thrust fault structure of the Rocky Mountains found within the bordering national parks of Glacier in Montana, United States and Waterton Lakes in Alberta, Canada. The structure was created due to the collision o ...

extends over from

Mount Kidd Mount Kidd is a double-summit massif centrally located in Kananaskis Country in the Canadian Rockies of Alberta, Canada. Mount Kidd is situated within Spray Valley Provincial Park, and its nearest higher neighbor is Mount Sparrowhawk, to the ...

in Alberta, south to Steamboat Mountain which is located 18 miles south of Sawtooth Ridge, which places Sawtooth Ridge within the southern extent of the Lewis Overthrust.

Climate

Based on the

Köppen climate classification The Köppen climate classification divides Earth climates into five main climate groups, with each group being divided based on patterns of seasonal precipitation and temperature. The five main groups are ''A'' (tropical), ''B'' (arid), ''C'' (te ...

, Sawtooth Ridge has an alpine

subarctic climate The subarctic climate (also called subpolar climate, or boreal climate) is a continental 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 ...

characterized by long, usually very cold winters, and mild to warm summers. Winter temperatures can drop below −10 °F with wind chill factors below −30 °F.

References

{{reflist

External links

* Weather
Sawtooth Ridge
Mountains of Montana Two-thousanders of the United States Landforms of Lewis and Clark County, Montana

Description

Geology

Climate

See also

References

External links