Big Southern Butte
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| Big Southern Butte | |
|---|---|
 Big Southern Butte |
|
| Elevation | 7,550 ft (2,301 m) [1] |
| Location | |
| Location | Butte County, Idaho, USA |
| Coordinates | 43°24′05″N 113°01′26″W / 43.40139°N 113.02389°W[citation needed] |
| Topo map | USGS Big Southern Butte |
| Geology | |
| Type | Lava dome |
| Age of rock | 300,000 years[2] |
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.[3] In fact, it is one of the largest volcanic domes on earth.[2] 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).[4]
[edit] References
- ^ "Big Southern Butte : visitidaho.org". Idaho Department of Commerce. http://www.visitidaho.org/thingstodo/outdoor-recreation/big-southern-butte.aspx. Retrieved 2008-08-13.
- ^ a b "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. Retrieved 2008-08-13.
- ^ "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. Retrieved 2007-06-17.
- ^ 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 9780975373804. http://books.google.com/books?id=cgE6XG-uL-0C&pg=PA138&lpg=PA138&dq=Big+Southern+Butte&source=web&ots=WxL2fS6M_9&sig=8VtBj2t5tglN3qvY4I2OxJGW4pc&hl=en&sa=X&oi=book_result&resnum=10&ct=result.
[edit] External links
- Flash animation of Big Southern Butte's geological history[dead link].
- History of the Big Southern Butte area
- Big Southern Butte is on the Tour of Idaho
- MSRmaps.com - USGS topo map & aerial photo
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