Lonquimay (volcano)
| Lonquimay | |
|---|---|
 Lonquimay's northwest face | |
| Highest point | |
| Elevation | 2,865 m (9,400 ft) |
| Coordinates | 38°22′36″S 71°35′00″W / 38.37667°S 71.58333°W |
| Geography | |
| Location | Chile |
| Parent range | Andes |
| Geology | |
| Mountain type | Stratovolcano |
| Last eruption | 1988 to 1990 |
Lonquimay Volcano is a stratovolcano of late-Pleistocene to dominantly Holocene age, with the shape of a truncated cone. The cone is largely andesitic, though basaltic and dacitic rocks are present.[1] It is located in the La Araucanía Region of Chile, immediately SE of Tolhuaca volcano. Sierra Nevada and Llaima are their neighbors to the south. The snow-capped volcano lies within the protected area Malalcahuello-Nalcas.
The volcano's last eruption began on December 25, 1988, earning it the nickname "Navidad".[2] The eruption lasted for 13 months before ending in 1990. The Volcanic Explositivy Index was 3, indicating tropospheric injections and catastrophic damage. The eruption was from a flank vent and involved mostly andesite lava, and had been preceded by increased seismicity for three weeks.[3] The volume of the lava flow decreased as time went on and the vent dimensions decreased, though by the end of the eruption the andesite had still built up to a length of 10.2 km.[3]
There was only a single fatality for the duration of the eruption, but it caused the evacuation of over 2000 people and caused extensive damage to farming and livestock in the surrounding region.[2][4]
See also
References
- ↑ "Lonquimay." Global Volcanism Program. Smithsonian Institution
- 1 2 "Lonquimay Volcano Eruptions". Volcano Discovery.
- 1 2 Sparks (1992). "Morphological, structural, and textural variations in the 1988-1990 andesite lava of Lonquimay volcano, Chile". Cambridge University Geological Magazine.
- ↑ Naranjo, Jose. "Lonquimay." Global Volcanism Program. Smithsonian Institution National Museum of Natural History