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Lonquimay Volcano

Updated: 28 mar. 2024 11:08 GMT -
stratovolcano 2865 m / 9,399 ft
Cile centrale e Argentina (Sud America), -38.38°S / -71.58°W
Current status: normal or dormant (1 out of 5)
Last update: 16 mag 2022 (Smithsonian / USGS Weekly Volcanic Activity Report)

Lonquimay is a small symmetrical stratovolcano with a flat top in central Chile immediately SE of Tolguaca volcano. It contains a glacier in the summit crater and down on the south flank.
Lonquimay often erupts from flank vents and produces large lava flows.

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Typical eruption style: explosive
Eruzioni del vulcano Lonquimay: 1988-90, 1940(?), 1933, 1887-90, 1853

Latest nearby earthquakes

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Background

Lonquimay volcano is dominantly andesitic, but contains also basaltic and dacitic rocks. Eruptions have occurred from both the summit crater and flank vents. A weakly defined fissure zone is aligned E-W.
A prominent NE-SW fissure cuts across the entire volcano and is known as the Cordón Fissural Oriental fissure zone. It extends 10 km to the NE has erupted from several flank vents and formed cinder cones. Some of these have erupted large lava flows in historical time, such as during 1887-90 and 1988-90. These flows traveled up to 10 km from their flank vents.
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Source: USGS/GVP

Eruzioni del vulcano Lonquimay



1988-90 flank eruption
After a repose interval of 100 years, Lonquimay volcano erupted again from a fissure vent on the NE flank on 25 December 1988.
The eruption lasted 13 months and built up a large new flank cone, dubbed Navidad ("Christmas"). It produced lava flows and large amounts of fluorine-bearing ash. The eruption caused one fatality, forced over 2000 people to be evacuated, killed hundreds of livestock and damaged farming in a wide area around the volcano. ...Ulteriori info

Latest satellite images

Lonquimay satellite image sat1Lonquimay satellite image sat2
Wed, 23 Mar 2022, 19:34

Lonquimay volcano (Central Chile) - Smithsonian / USGS Weekly Volcanic Activity Report for 16 March-22 March 2022 (New Activity / Unrest)

SERNAGEOMIN reported increased seismicity at Lonquimay during the first half of March, characterized by hybrid (HB) signals accompanied by long-period (LP) events, and fewer volcano-tectonic (VT) events. Only some of the HB and VT events could be located where the epicenters were within 2-7 km of the volcano with hypocenters at depths of 4-11 km. The number of HB and VT events increased on 9 March. ... Read all
Wed, 23 Mar 2022, 03:38

Lonquimay volcano (Central Chile and Argentina): Volcanic Alert Level raised to Yellow, elevated seismicity

Occurrence of VT, LP and hybrid earthquakes at the volcano since May 21 (image: SERNAGEOMIN)
The local observatory Servicio Nacional de Geología y Minería de Chile raised the alert level for the volcano to "yellow", as an increase of seismic activity has been recorded during the past two weeks. ... Read all

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