| Copahue | |
|---|---|
 Copahue Volcano photographed from space | |
| Highest point | |
| Elevation | 2,997 m (9,833 ft)[1] |
| Coordinates | 37°51′S71°10′W / 37.850°S 71.167°W /-37.850; -71.167[1] |
| Geography | |
  Copahue Argentina-Chile | |
| Location | Neuquén Province, ArgentinaBío Bío Region, Chile |
| Parent range | Andes |
| Geology | |
| Mountain type | Stratovolcano |
| Last eruption | January 6, 2016[1] |
Copahue (Spanish pronunciation:[koˈpawe]) is astratovolcano in theAndes on the border ofBío Bío Region,Chile andNeuquén Province,Argentina. There are ninevolcanic 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) widecrater lake with apH ranging between 0.18 and 0.30.[2] Eruptions from this crater lake have ejectedpyroclastic rocks and chilled liquidsulfur fragments.[1] Although the lake emptied during the 2000 eruption, it later returned to its previous levels.Copahue means "sulphur waters" inMapuche.[3]
Copahue sits on abasement ofsedimentary and volcanic rocks ranging in age fromEocene toPliocene.[2] The modern volcano sits in a volcanically active area, with acaldera 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 largepyroclastic flows, extending up to 37 km from the volcano.[2]
The modern structure is an elongatedshield volcano, with a maximum thickness of 22 km and a minimum of 8 km.[2] It has erupted ten times since 1900, most recently in March 2016.[1][3][4] 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.[5]
| International | |
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| Geographic | |
