Ollague Volcano

Updated: 15 mai 2024 02:31 GMT - refresh

stratovolcano 5868 m / 19,252 ft
Chile / Argentine (nord) + Bolivie (Amérique du Sud), -21.3°S / -68.18°W
Condition actuelle: normal / en sommeil (1 sur 5)

Last update: 7 janv. 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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News/Updates | Earthquakes

Style éruptif tipique: effusive & explosive
Eruptions du volcan Ollague: possible eruption in 1903

Derniers séismes proches

Heure	Mag. / Profondeur	Distance / Lieu
14 mai 04:21 (Santiago)	2.8 139 km	26 km au nord-ouest	Chile: 15 km al NO de Ollagüe	Info
dimanche, 12 mai 2024 GMT (1 séisme)
12 mai 05:02 (Santiago)	3.0 128 km	27 km à l'ouest	Chile: 20 km al O de Ollagüe I FELT IT	Info
mercredi, 8 mai 2024 GMT (1 séisme)
8 mai 06:00 (Santiago)	5.2 104 km	17 km au sud-ouest	20 km SSW of Ollagüe, Chile I FELT IT	Info
mercredi, 1 mai 2024 GMT (1 séisme)
1 mai 03:10 (Santiago)	3.2 145 km	29 km à l'ouest	Chile: 25 km al SO de Ollagüe	Info

Voir tous

Introduction

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)