Ollague volcano
Updated: Jul 6, 2022 09:37 GMT - Refresh
stratovolcano 5868 m / 19,252 ft
Northern Chile, Bolivia and Argentina (South America), -21.3°S / -68.18°W
Current status: normal or dormant (1 out of 5)
Northern Chile, Bolivia and Argentina (South America), -21.3°S / -68.18°W
Current status: normal or dormant (1 out of 5)
Volcán Ollagüe (also known as Oyahué) is a massive andesitic stratovolcano in northern Chile on the border with Bolivia. It contains a dacitic summit lava dome. No historical eruptions have been confirmed from Ollagüe, but there is intense fumarolic activity and a persistent steam plume emanates from a fumarole on the south side of the summit dome.
There are active sulphur mines on the upper western and southern flanks of the volcano which are serviced by a now disused switchback road which reaches 5650 m elevation and rank as one of the highest in the world.
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Ollague volcano eruptions: possible eruption in 1903
Lastest nearby earthquakes:
| Time | Mag. / Depth | Distance/Location | ||
| Monday, July 4, 2022 GMT (1 quake) | ||||
| Jul 4, 2022 11:59 am (GMT -4) (Jul 4, 2022 15:59 GMT) | 4.5 143 km | 23 km (14 mi) Bolivia: 142 Km NE of Calama, Chile | ||
| Sunday, July 3, 2022 GMT (1 quake) | ||||
| Jul 3, 2022 3:21 pm (GMT -4) (Jul 3, 2022 19:21 GMT) | 4.6 141 km | 43 km (27 mi) 106 km northeast of Calama, Provincia de El Loa, Antofagasta, Chile | ||
| Thursday, June 30, 2022 GMT (1 quake) | ||||
| Jun 30, 2022 8:20 am (GMT -4) (Jun 30, 2022 12:20 GMT) | 3.6 129 km | 40 km (25 mi) 112 km northeast of Calama, Provincia de El Loa, Antofagasta, Chile | ||
| Thursday, June 23, 2022 GMT (1 quake) | ||||
| Jun 23, 2022 6:36 pm (GMT -4) (Jun 23, 2022 22:36 GMT) | 4.2 122 km | 21 km (13 mi) Chile-Bolivia Border Region | ||
| Wednesday, June 22, 2022 GMT (1 quake) | ||||
| Jun 22, 2022 10:16 am (GMT -4) (Jun 22, 2022 14:16 GMT) | 3.5 16 km | 22 km (14 mi) Departamento de Potosi, 129 km northeast of Calama, Provincia de El Loa, Antofagasta, Chile | ||
Background
Ollague Volcano suffered flank collapse during the Pleistocene and produced a large debris-avalanche deposit which extends westward and separates the Salar de San Martín from the Salar de Ollagüe salt flats.3 youthful-looking silicic lava flows were emplyed after the collapse, but are probably still older than the last glaciation about 11,000 years ago.
A youthful-looking scoria cone on the lower WSW flank, La Poruñita, was long believed to be relatively young, but has been dated to an age of 420,000 to 680,000 years.
(Source: Smithsonian Global Volcanism Program)
See also: Sentinel hub | Landsat 8 | NASA FIRMS
