Nevado de Longaví
| Nevado de Longaví | |
|---|---|
Photo of Nevado de Longaví from the cordillera of Linares
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| Highest point | |
| Elevation | 3,242 m (10,636 ft) |
| Listing | List of volcanoes in Chile |
| Coordinates | 36°11′35″S 71°09′40″W / 36.193°S 71.161°W |
| Geography | |
 Nevado de Longaví
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| Parent range | Andes |
| Geology | |
| Mountain type | Stratovolcano |
| Last eruption | 4890 BCE ± 75 years |
Nevado de Longaví is a volcano in the Andes of central Chile. The 3,242 metres (10,636 ft) high volcano lies in the Linares Province and the Maule Region. It features a summit crater and several parasitic craters. The volcano is constructed principally from lava flows. Two collapses of the edifice have carved collapse scars into the volcano, one on the eastern slope known as Lomas Limpias and another on the southwestern slope known as Los Bueye. The volcano featured a glacier in 1976 and is the headwater of the Achibueno and Blanco rivers.
The oldest volcanic activity occurred one million years ago. After a first phase characterized by basaltic andesite effusion, the bulk of the edifice was constructed by andesitic lava flows. Nevado de Longaví features an unusual magma chemistry that resembles adakite. It may be the consequence of the magma being unusually water-rich; such may occur because the Mocha fracture zone subducts beneath the volcano.
Nevado de Longaví was active during the Holocene. 6,835 ± 65 or 7,500 years before present an explosive eruption deposited pumice over 20 kilometres (12 mi) away from the volcano. A lava flow was then erupted over the pumice. The last eruption occurred about 5,700 years ago and formed a lava dome. The volcano has no historic eruptions but features fumarolic activity and is watched by SERNAGEOMIN.
Nevado de Longaví lies in the Longaví commune of Linares Province, Maule Region.
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Wikipedia