Big Southern Butte

Big Southern Butte

Highest point
Elevation| 7,550 ft (2,300 m) [1]
Prominence| 2,380 ft (730 m) [2]
Coordinates|  [ ⚑ ] : 43°24′05″N 113°01′26″W﻿ / ﻿43.40139°N 113.02389°W﻿ / 43.40139; -113.02389[3]
Geography
Location| Butte County, Idaho,
United States
Topo map| USGS Big Southern Butte
Geology
Age of rock| 300,000 years[4]
Mountain type| Lava dome

U.S. National Natural Landmark

Designated| 1976

Big Southern Butte is the largest and youngest (300,000 years old) of three rhyolitic domes formed over a million years near the center of the Eastern Snake River Plain in the U.S. state of Idaho.[5] It is one of the largest volcanic domes on earth.[4] It rises approximately 2500 vertical feet (762 m) above the lava plain in southern Butte County, east of Craters of the Moon National Monument.

Big Southern Butte consists of two coalesced lava domes with a base diameter of 6.5 kilometres (4.0 mi) and a combined volume of approximately 8 cubic kilometres (1.9 cu mi).[6]

## References

1. ↑ "Big Southern Butte : visitidaho.org". Idaho Department of Commerce. http://www.visitidaho.org/thingstodo/outdoor-recreation/big-southern-butte.aspx.
2. ↑ "Big Southern Butte, Idaho". http://www.peakbagger.com/peak.aspx?pid=17107.
3. ↑ U.S. Geological Survey Geographic Names Information System: Big Southern Butte
4. ↑ 4.0 4.1 "Big Southern Butte". Bureau of Land Management. 2007-10-09. http://www.blm.gov/id/st/en/fo/upper_snake/recreation_sites_/Big_Butte.html.
5. ↑ "Formation of Big Southern Butte, eastern Snake River Plain, Idaho". The Educational Multimedia Visualization Center of the Dept. Geological Sciences, U.C.S.B. http://emvc.geol.ucsb.edu/download/bsb.php.
6. ↑ Haller, Kathleen; Spencer Wood (January 2004). Geological Field Trips in Southern Idaho, Eastern Oregon, and Northern Nevada. Department of Geosciences, Boise State University. p. 138. ISBN 978-0-9753738-0-4. https://books.google.com/books?id=cgE6XG-uL-0C&q=Big+Southern+Butte&pg=PA138.

## External links

* History of the Big Southern Butte area
* Tourofidaho.com: Big Southern Butte − on the Tour of Idaho

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