Earth:Big Southern Butte

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Big Southern Butte
Big southern butte.Par.84344.Image.-1.-1.1.jpg
Big Southern Butte
Highest point
Elevation7,550 ft (2,300 m) [1]
Prominence2,380 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
LocationButte County, Idaho,
United States
Topo mapUSGS Big Southern Butte
Geology
Age of rock300,000 years[4]
Mountain typeLava dome
Designated1976

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

External links