Mount Lebanon (Montana)
Mount Lebanon is a 5,807-foot (1,770-metre) mountain summit in Liberty County, Montana, United States.[3]
| Mount Lebanon | |
|---|---|
 South aspect | |
| Highest point | |
| Elevation | 5,807 ft (1,770 m)[1][2] |
| Prominence | 957 ft (292 m)[2] |
| Parent peak | East Butte (5,885 ft)[2] |
| Isolation | 1.82 mi (2.93 km)[2] |
| Coordinates | 48°52′05″N 111°03′43″W[3] |
| Geography | |
  Mount Lebanon Location in Montana  Mount Lebanon Location in the United States | |
| Country | United States |
| State | Montana |
| County | Liberty |
| Parent range | Sweet Grass Hills[1] |
| Topo map | USGS Mount Lebanon |
| Geology | |
| Age of rock | Eocene |
| Mountain type | Laccolith |
| Type of rock | Igneous rock, Syenite |
Description
Mount Lebanon is part of the Sweet Grass Hills and ranks as the fifth-highest peak in the range,[1] and fifth-highest in the county.[2] It is situated 26 miles (42 km) north of Chester, Montana, and eight miles (13 km) south of the Canada–United States border. Precipitation runoff from the mountain drains into tributaries of the Milk River.[1] Topographic relief is modest as the summit rises over 1,500 feet (460 meters) above the surrounding plains in one mile. The landform's toponym has been officially adopted by the United States Board on Geographic Names.[3]
Geology
Mount Lebanon is an exposed laccolith composed of diorite porphyry which was created by an igneous intrusion through older Cretaceous sedimentary rocks during the Eocene, about 50 million years ago.[4][5] Over time, erosion of the sedimentary rock has exposed the solidified laccolith which is more resistant to weathering.
Climate
Based on the Köppen climate classification, Mount Lebanon is located in a semi-arid climate zone with long, cold, dry winters and hot summers with cool nights.[5][6] Winter temperatures can drop below −10 °F with wind chill factors below −30 °F.
References
- "Mount Lebanon, Montana". Peakbagger.com. Retrieved 2023-07-23.
- "Lebanon, Mount - 5,807' MT". listsofjohn.com. Retrieved 2023-07-23.
- "Mount Lebanon". Geographic Names Information System. United States Geological Survey, United States Department of the Interior. Retrieved 2023-07-23.
- Sweet Grass Hills, blm.gov, Retrieved 2023-07-23.
- Sweet Grass Hills Resource(s) Management Plan (RMP) Amendment and West HiLine Resource(s) Management Plan (RMP), Toole County, Liberty County: Environmental Impact Statement, 1996, p. 19, 20.
- Peel, M. C.; Finlayson, B. L.; McMahon, T. A. (2007). "Updated world map of the Köppen−Geiger climate classification". Hydrol. Earth Syst. Sci. 11. ISSN 1027-5606.