Ollague Volcano
Updated: Apr 24, 2024 16:31 GMT -
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)
Last update: 7 Jan 2023 (Volcanic Ash Advisory)
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
Latest nearby earthquakes
| Time | Mag. / Depth | Distance / Location | |||
| Apr 23, 09:34 am (Santiago) | 2.8 121 km | 22 km (14 mi) to the W |  Chile: 21 km al SO de Ollagüe | Info | |
| Monday, April 22, 2024 GMT (2 quakes) | |||||
| Apr 22, 08:57 am (Santiago) | 2.7 137 km | 26 km (16 mi) to the W | Chile: 24 km al SO de Ollagüe | Info | |
| Apr 21, 09:49 pm (La Paz) | 2.9 166 km | 24 km (15 mi) to the NE |  Potosi, Bolivia | Info | |
| Saturday, April 20, 2024 GMT (1 quake) | |||||
| Apr 19, 08:48 pm (Santiago) | 3.1 140 km | 25 km (15 mi) to the SW | Chile: 31 km al S de Ollagüe I FELT IT | Info | |
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)
Latest satellite images
