Copahue
| Copahue | |
|---|---|
Copahue's Astronaut Photography of Earth.
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| Highest point | |
| Elevation | Lua error in Module:Convert at line 1851: attempt to index local 'en_value' (a nil value). [1] |
| Coordinates | Lua error in package.lua at line 80: module 'strict' not found. [1] |
| Geography | |
 Copahue
Chile
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| Location | Bío Bío Region, Chile |
| Parent range | Andes |
| Geology | |
| Mountain type | Stratovolcano |
| Last eruption | July to December 2014[1] |
Copahue (Spanish pronunciation: [koˈpawe]) is a stratovolcano in the Andes on the border of Bío Bío Region, Chile and Neuquén Province, Argentina. There are nine volcanic craters along a 2 km (1.2 mi) line, the easternmost of which is historically the most active, and contains a 300 m (1000 ft) wide crater lake with a pH ranging between 0.18 and 0.30.[2] Eruptions from this crater lake have ejected pyroclastic rocks and chilled liquid sulfur fragments.[1] Although the lake emptied during the 2000 eruption, it later returned to its previous levels. Copahue means "sulphur waters" in Mapuche.[3]
Copahue sits on a basement of sedimentary and volcanic rocks ranging in age from Eocene to Pliocene.[2] The modern volcano sits in a volcanically active area, with a caldera from the Pliocene, measuring 20 km by 15 km, lying to the east of Copahue. The modern volcano became active roughly 1.2 million years ago (Ma).[2] The modern caldera formed 0.6 to 0.4 Ma, and produced large pyroclastic flows, extending up to 37 km from the volcano.[2]
The modern structure is an elongated shield volcano, with a maximum thickness of 22 km and a minimum of 8 km.[2] It has erupted ten times since 1900, most recently between December 2012 and July 2014.[1][3] On 27 May 2013, it was reported that a red alert had been issued and the evacuation of around 2,000 people was to begin.[4]
See also
References
- ↑ 1.0 1.1 1.2 1.3 1.4 Lua error in package.lua at line 80: module 'strict' not found.
- ↑ 2.0 2.1 2.2 2.3 2.4 Lua error in package.lua at line 80: module 'strict' not found.
- ↑ 3.0 3.1 Lua error in package.lua at line 80: module 'strict' not found.
- ↑ Lua error in package.lua at line 80: module 'strict' not found.
Bibliography
- Lua error in package.lua at line 80: module 'strict' not found. (in Spanish; also includes volcanoes of Argentina, Bolivia, and Peru)
- Lua error in package.lua at line 80: module 'strict' not found.
