Big Southern Butte

Infobox Mountain
Name=Big Southern Butte
Photo=Big Southern Butte at Craters of the Moon NM-750px.jpg
Caption=
Elevation= convert|7550|ft|m|0 [cite web | title = Big Southern Butte : visitidaho.org | work = | publisher = Idaho Department of Commerce | date = | url = http://www.visitidaho.org/thingstodo/outdoor-recreation/big-southern-butte.aspx | accessdate = 2008-08-13]
Location= Idaho
Range=
Prominence =
Coordinates = coord|43|24|3.60|N|113|1|22.8|W|type:mountain_region:USFact|date=August 2008
Topographic
USGS Big Southern Butte
Type=Lava dome
Volcanic_Arc/Belt=
Age= 300,000 years
Last eruption=
First ascent=
Easiest route=

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. [cite web | title = Formation of Big Southern Butte, eastern Snake River Plain, Idaho | work = The Educational Multimedia Visualization Center of the Dept. Geological Sciences, U.C.S.B | url = http://emvc.geol.ucsb.edu/download/bsb.php | accessdate = 2007-06-17] In fact, it is one of the largest volcanic domes on earth.cite web | title = Big Southern Butte | publisher = Bureau of Land Management | date = 2007-10-09 | url = http://www.blm.gov/id/st/en/fo/upper_snake/recreation_sites_/Big_Butte.html | accessdate = 2008-08-13]

Big Southern Butte consists of two coalesced lava domes with a base diameter of convert|6.5|km|mi|1 and a combined volume of approximately convert|8|km3|cumi|1. [cite book | last = Haller | first = Kathleen | coauthors = Spencer Wood | title = Geological Field Trips in Southern Idaho, Eastern Oregon, and Northern Nevada | publisher = Department of Geosciences, Boise State University | date = January 2004 | location = | pages = p. 138 | url = 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
isbn = 9780975373804]

References

External links

*Flash animation of Big Southern Butte's [http://emvc.geol.ucsb.edu/animations/flash/bsb.swf geological history] .
* [http://www.inl.gov/visitorinformation/area_history.shtml History of the Big Southern Butte area]
* [http://www.tourofidaho.com Big Southern Butte is on the Tour of Idaho]