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Ollague Volcano

Updated: 28 Μαρτίου 2024 22:55 GMT -
stratovolcano 5868 m / 19,252 ft
Βόρεια Χιλή, Βολιβία και Αργεντινή (Νότια Αμερική), -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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Typical eruption style: effusive & explosive
Ollague volcano eruptions: possible eruption in 1903

Latest nearby earthquakes

ΏραMag. / ΒάθοςΑπόσταση / Τοποθεσία
27 Μαρ 11:05 (Santiago)
27 Μαρ 14:05 GMT
2.8

113 km
28 km νοτιοδυτικά Χιλή, 124 km βορειοανατολικά από Calama, El Loa, Antofagasta Περ.
Παρασκευή, 22 Μαρτίου 2024 GMT (2 σεισμοί)
22 Μαρ 18:16 (La Paz)
22 Μαρ 22:16 GMT
2.9

164 km
15 km βόρεια Potosi, Bolivia Περ.
22 Μαρ 00:43 (Santiago)
22 Μαρ 03:43 GMT
2.9

125 km
29 km δυτικά Chile: 20 km al O de Ollagüe Περ.
Παρασκευή, 15 Μαρτίου 2024 GMT (1 σεισμός)
15 Μαρ 01:43 (Santiago)
15 Μαρ 04:43 GMT
3.5

135 km
28 km νοτιοδυτικά Chile: 31 Km Al So De Ollagüe Περ.

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

Ollague satellite image sat1Ollague satellite image sat2

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