Ollague volcano

stratovolcano 5868 m / 19,252 ft
Chile / Argentinien (Norden) + Bolivien, Südamerika, -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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Typical eruption style: effusive & explosive
Ollague volcano eruptions: possible eruption in 1903

Latest nearby earthquakes

TimeMag. / DepthDistance/Location
Wed, 16 Jun 2021 (GMT) (2 earthquakes)
16 Jun 2021 14:31:45 GMT
3.4

129 km
38 km (24 mi)
118 km north of Calama, Provincia de El Loa, Antofagasta, Chile
16 Jun 2021 07:56:11 GMT
3.0

112 km
43 km (27 mi)
Provincia de El Loa, Antofagasta, 197 km southeast of Iquique, Tarapaca, Chile
Wed, 9 Jun 2021 (GMT) (2 earthquakes)
9 Jun 2021 14:08:31 GMT
3.6

131 km
39 km (24 mi)
147 km north of Calama, Provincia de El Loa, Antofagasta, Chile
9 Jun 2021 10:31:43 GMT
3.6

133 km
33 km (21 mi)
122 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
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