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Ulla on the top of Ojos del Salado volcano (6893 m)
Monday, Mar 05, 2012
On top of the world... Our team member Ulla Lohmann is happy to have reached the world's highest volcano with almost 7000 m. ... [more]

Ojos del Salado volcano

stratovolcano 6887 m / 22,595 ft
Northern Chile / Argentina, -27.12°S / -68.55°W
Current status: dormant (1 out of 5)
Last update: 5 Mar 2012
Typical eruption style: explosive
Ojos del Salado volcano eruptions: 1993 (?), 700 AD ± 300 Ojos del Salado volcano in February 2012 (Photo: Ulla Lohmann)
Last earthquakes nearby:
TimeMag. / DepthDistanceLocation
Sun, 15 Jun
Sun, 15 Jun 07:08 UTCM 4.3 / 143 km13 kmCATAMARCA, ARGENTINA
Nevados Ojos del Salado is the world's highest active volcano. It is located on the Chile/Argentina border, about 20 km south of the road that crosses Argentina-CHile border at Paso de San Francisco.
The mountain has very dry conditions with snow only remaining on the peak during winter. The volcano contains two summit peaks of the same height.
A large explosive eruption took pleace about 1000-1500 years ago and produced pyroclastic flows.
Ojos del Salado is still active and has fumarolic activity at present, but there are no confirmed historical eruptions of Ojos del Salado. A report of minor gas-and-ash emission in 1993 could not be confirmed. The volcano currently shows fumarolic activity.

Background:

from Smithsonian / GVP volcano information:
The summit complex, which is elongated in a NE-SW direction and overlies a largely buried caldera, contains numerous craters, pyroclastic cones and andesitic-to-rhyolitic lava domes and has been the source of Holocene lava flows. A major rhyodacitic explosive eruption took place about 1000-1500 years ago, producing pumiceous pyroclastic flows. The most recent eruptive activity of Ojos del Salado appears to have originated along a NNE-trending rift along the summit complex. It involved formation of a thick, viscous lava flow and at least a dozen small cones, lava domes, and explosion craters. No confirmed historical eruptions of Ojos del Salado have been recorded, but the volcano has displayed persistent fumarolic activity, and there was an unconfirmed report of minor gas-and-ash emission in 1993.

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