geo.wikisort.org - Mountains

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
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[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 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]

See also

• East Butte
• Middle Butte

Gallery

References

External links

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

На других языках

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- [en] Big Southern Butte

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[it] Big Southern Butte

Il Big Southern Butte è il più grande e il più giovane (con un'età di 300.000 anni) di tre domi riolitici formatisi in oltre un milione di anni presso la parte centrale della pianura del fiume Snake orientale nello stato USA dell'Idaho.[2] Infatti, è uno dei più grandi domi vulcanici sulla Terra.[3] Rispetto alla pianura di roccia lavica nella Contea di Butte meridionale, a est del Monumento e Riserva Nazionale Craters of the Moon, si eleva verticalmente di circa 750 m (2500 ft).

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