| Country | Chile |
| Volcanic Region | Southern Andean Volcanic Arc |
| Landform | Volc Type | Composite | Stratovolcano |
| Last Known Eruption | 1869 CE |
| Coordinates | 37.406°S, 71.349°W |
| Elevation | 2,979 m (9,774 ft) |
| Volcano Number | 357080 |
 Google Earth Placemark with Features
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 Cite Volcano Profile
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Cite this Report
The Buenos Aires VAAC reported that only gas and steam rose from Antuco on 20 April; although a pilot reported ash emissions, ash was not identified in satellite imagery or by web camera during clear skies.
Cite this Report
Fumarolic activity in summit crater's small scoria cone
During a February overflight, fumarolic activity was visible in the small scoria cone nested within the main crater. Weak summit fumaroles had previously been observed during visits in 1969, 1982, and March 1984. Fumarolic activity has apparently been continuous, but of variable intensity, from the cone since the volcano's last eruption in 1869. Lava flows from Antuco dammed Laja Lake's outlet in 1853, causing the water level to rise around 20 m.
Information Contacts: H. Moreno, SAVO, Temuco.
2013: April
Cite this Report
The Buenos Aires VAAC reported that only gas and steam rose from Antuco on 20 April; although a pilot reported ash emissions, ash was not identified in satellite imagery or by web camera during clear skies.
Reports are organized chronologically and indexed below by Month/Year (Publication Volume:Number), and include a one-line summary. Click on the index link or scroll down to read the reports.
05/1992 (BGVN 17:05) Fumarolic activity in summit crater's small scoria cone
Information is preliminary and subject to change. All times are local (unless otherwise noted)
Cite this Report
Fumarolic activity in summit crater's small scoria cone
During a February overflight, fumarolic activity was visible in the small scoria cone nested within the main crater. Weak summit fumaroles had previously been observed during visits in 1969, 1982, and March 1984. Fumarolic activity has apparently been continuous, but of variable intensity, from the cone since the volcano's last eruption in 1869. Lava flows from Antuco dammed Laja Lake's outlet in 1853, causing the water level to rise around 20 m.
Information Contacts: H. Moreno, SAVO, Temuco.
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There is data available for 11 confirmed eruptive periods.
[ 1972 Jul 2 ± 182 days ] Discredited Eruption
[ 1929 Jul 2 ± 182 days ] Discredited Eruption
1869 Jul 2 ± 182 days Confirmed Eruption (Explosive / Effusive) VEI: 2
| Episode 1 | Eruption (Explosive / Effusive) | |||||||||||||||||||
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| 1869 Jul 2 ± 182 days - Unknown | Evidence from Observations: Reported | ||||||||||||||||||
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List of 2 Events for Episode 1
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1863 Dec 16 ± 15 days Confirmed Eruption (Explosive / Effusive) VEI: 2
| Episode 1 | Eruption (Explosive / Effusive) | |||||||||||||||||||
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| 1863 Dec 16 ± 15 days - Unknown | Evidence from Observations: Reported | ||||||||||||||||||
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List of 2 Events for Episode 1
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[ 1862 Jan 16 ± 15 days - 1862 Mar 3 ] Uncertain Eruption
| Episode 1 | Eruption (Explosive / Effusive) | ||||||||||||||
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| 1862 Jan 16 ± 15 days - 1862 Mar 3 | Evidence from Unknown | |||||||||||||
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List of 1 Events for Episode 1
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1861 Feb 16 (?) ± 15 days - 1861 Aug 16 (?) ± 15 days Confirmed Eruption (Explosive / Effusive) VEI: 0
| Episode 1 | Eruption (Explosive / Effusive) | |||||||||||||||||||
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| 1861 Feb 16 (?) ± 15 days - 1861 Aug 16 (?) ± 15 days | Evidence from Observations: Reported | ||||||||||||||||||
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List of 2 Events for Episode 1
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1852 Nov 16 ± 15 days - 1853 Jan 16 ± 15 days Confirmed Eruption (Explosive / Effusive) VEI: 3
| Episode 1 | Eruption (Explosive / Effusive) | NE flank fissure and summit | ||||||||||||||||||||||||||||||||||||||
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| 1852 Nov 16 ± 15 days - 1853 Jan 16 ± 15 days | Evidence from Observations: Reported | ||||||||||||||||||||||||||||||||||||||
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List of 6 Events for Episode 1 at NE flank fissure and summit
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[ 1848 Jul 2 ± 182 days ] Uncertain Eruption
| Episode 1 | Eruption (Explosive / Effusive) | ||||||||||||||||||||||||
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| 1848 Jul 2 ± 182 days - Unknown | Evidence from Unknown | |||||||||||||||||||||||
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List of 3 Events for Episode 1
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1845 Feb 26 - 1845 Mar 1 (on or after) Confirmed Eruption (Explosive / Effusive) VEI: 2
| Episode 1 | Eruption (Explosive / Effusive) | ||||||||||||||||||||||||||||||||||||||||||||
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| 1845 Feb 26 - 1845 Mar 1 (on or after) | Evidence from Observations: Reported | |||||||||||||||||||||||||||||||||||||||||||
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List of 7 Events for Episode 1
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[ 1839 Jul 2 ± 182 days ] Uncertain Eruption
| Episode 1 | Eruption (Explosive / Effusive) | ||||||||||||||
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| 1839 Jul 2 ± 182 days - Unknown | Evidence from Unknown | |||||||||||||
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List of 1 Events for Episode 1
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1828 Dec 18 Confirmed Eruption (Explosive / Effusive) VEI: 2
| Episode 1 | Eruption (Explosive / Effusive) | |||||||||||||||||||||||||||||||||||||||
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| 1828 Dec 18 - Unknown | Evidence from Observations: Reported | ||||||||||||||||||||||||||||||||||||||
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List of 6 Events for Episode 1
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1820 Jul 2 ± 182 days - 1821 Jul 2 (?) ± 182 days Confirmed Eruption (Explosive / Effusive) VEI: 1
| Episode 1 | Eruption (Explosive / Effusive) | ||||||||||||||||||||||||
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| 1820 Jul 2 ± 182 days - 1821 Jul 2 (?) ± 182 days | Evidence from Observations: Reported | |||||||||||||||||||||||
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List of 3 Events for Episode 1
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1806 May 16 (?) ± 15 days Confirmed Eruption (Explosive / Effusive) VEI: 2
| Episode 1 | Eruption (Explosive / Effusive) | ||||||||||||||||||||||||
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| 1806 May 16 (?) ± 15 days - Unknown | Evidence from Observations: Reported | |||||||||||||||||||||||
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List of 3 Events for Episode 1
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1752 Jan 31 - 1752 Feb 1 Confirmed Eruption (Explosive / Effusive) VEI: 3 (?)
| Episode 1 | Eruption (Explosive / Effusive) | ||||||||||||||||||||||||||||||||||||||||||||
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| 1752 Jan 31 - 1752 Feb 1 | Evidence from Observations: Reported | |||||||||||||||||||||||||||||||||||||||||||
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List of 7 Events for Episode 1
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1750 ± 10 years Confirmed Eruption (Explosive / Effusive) VEI: 2
| Episode 1 | Eruption (Explosive / Effusive) | |||||||||||||||||||
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| 1750 ± 10 years - Unknown | Evidence from Observations: Reported | ||||||||||||||||||
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List of 2 Events for Episode 1
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7750 BCE (?) Confirmed Eruption (Explosive / Effusive)
| Episode 1 | Eruption (Explosive / Effusive) | ||||||||||||||||||||||||
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| 7750 BCE (?) - Unknown | Evidence from Isotopic: 14C (uncalibrated) | |||||||||||||||||||||||
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List of 3 Events for Episode 1
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This compilation of synonyms and subsidiary features may not be comprehensive. Features are organized into four major categories: Cones, Craters, Domes, and Thermal Features. Synonyms of features appear indented below the primary name. In some cases additional feature type, elevation, or location details are provided.
Synonyms |
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| Antojo | Antoco | Laxa | Laja | ||||
Cones |
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| Feature Name | Feature Type | Elevation | Latitude | Longitude |
| Condor, Cerro | Stratovolcano | |||
| Pangues, Los | Cone | |||
| Velluda, Sierra | Stratovolcano | 3585 m | 37° 28' 0.00" S | 71° 24' 47.00" W |
Craters |
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| Feature Name | Feature Type | Elevation | Latitude | Longitude |
| Henedura, La | Crater | |||
Antuco volcano rises dramatically above the shores of Laguna de la Laja. Edifice failure at the beginning of the Holocene created a large horseshoe-shaped caldera whose NW rim forms the ridge descending diagonally across the photo to the right. The steep-sided modern basaltic cone has grown 1000 m since then, producing fresh-looking lava flows with prominent levees that have overtopped the caldera rim and reached the lake shore in the foreground. The most recent eruptions of Antuco occurred during the 18th and 19th centuries.
A somewhat fanciful sketch depicts visitors fleeing a small phreatic explosion from a vent in the summit crater of Antuco volcano on March 1, 1839. Historical eruptions of Antuco have been recorded since the middle of the 18th century. All historical activity has consisted of mild-to-moderate explosive eruptions, with the exception of a flank eruption during 1852-53 that produced a lava flow.
Antuco volcano, seen here from the NW, has a complicated history beginning with construction of an andesitic stratovolcano during the Pleistocene. Edifice failure at the beginning of the Holocene produced a large debris avalanche that traveled down the Río Laja to the west. The collapse left a large horseshoe-shaped caldera whose NW rim forms the ridge descending to the right. The steep-sided modern basaltic cone (upper right) has grown 1000 m since then. Moderate explosive eruptions were recorded in the 18th and 19th centuries.
The snow-capped modern summit of 2979-m-high Antuco volcano rises above the rim of a large horseshoe-shaped caldera, whose WNW rim forms the flat ridge just above the snow line. The caldera was formed by collapse of an older Antuco volcano at the beginning of the Holocene. The 1-km-high modern cone subsequently grew at the head of the scarp. Eruptions from both summit and flank vents have occurred during the 19th and 20th centuries.There are no samples for Antuco in the Smithsonian's NMNH Department of Mineral Sciences Rock and Ore collection.
| Copernicus Browser | The Copernicus Browser replaced the Sentinel Hub Playground browser in 2023, to provide access to Earth observation archives from the Copernicus Data Space Ecosystem, the main distribution platform for data from the EU Copernicus missions. |
| MIROVA | Middle InfraRed Observation of Volcanic Activity (MIROVA) is a near real time volcanic hot-spot detection system based on the analysis of MODIS (Moderate Resolution Imaging Spectroradiometer) data. In particular, MIROVA uses the Middle InfraRed Radiation (MIR), measured over target volcanoes, in order to detect, locate and measure the heat radiation sourced from volcanic activity. |
| MODVOLC Thermal Alerts | Using infrared satellite Moderate Resolution Imaging Spectroradiometer (MODIS) data, scientists at the Hawai'i Institute of Geophysics and Planetology, University of Hawai'i, developed an automated system called MODVOLC to map thermal hot-spots in near real time. For each MODIS image, the algorithm automatically scans each 1 km pixel within it to check for high-temperature hot-spots. When one is found the date, time, location, and intensity are recorded. MODIS looks at every square km of the Earth every 48 hours, once during the day and once during the night, and the presence of two MODIS sensors in space allows at least four hot-spot observations every two days. Each day updated global maps are compiled to display the locations of all hot spots detected in the previous 24 hours. There is a drop-down list with volcano names which allow users to 'zoom-in' and examine the distribution of hot-spots at a variety of spatial scales. |
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WOVOdat
Single Volcano View Temporal Evolution of Unrest Side by Side Volcanoes |
WOVOdat is a database of volcanic unrest; instrumentally and visually recorded changes in seismicity, ground deformation, gas emission, and other parameters from their normal baselines. It is sponsored by the World Organization of Volcano Observatories (WOVO) and presently hosted at the Earth Observatory of Singapore.
GVMID Data on Volcano Monitoring Infrastructure The Global Volcano Monitoring Infrastructure Database GVMID, is aimed at documenting and improving capabilities of volcano monitoring from the ground and space. GVMID should provide a snapshot and baseline view of the techniques and instrumentation that are in place at various volcanoes, which can be use by volcano observatories as reference to setup new monitoring system or improving networks at a specific volcano. These data will allow identification of what monitoring gaps exist, which can be then targeted by remote sensing infrastructure and future instrument deployments. |
| Volcanic Hazard Maps | The IAVCEI Commission on Volcanic Hazards and Risk has a Volcanic Hazard Maps database designed to serve as a resource for hazard mappers (or other interested parties) to explore how common issues in hazard map development have been addressed at different volcanoes, in different countries, for different hazards, and for different intended audiences. In addition to the comprehensive, searchable Volcanic Hazard Maps Database, this website contains information about diversity of volcanic hazard maps, illustrated using examples from the database. This site is for educational purposes related to volcanic hazard maps. Hazard maps found on this website should not be used for emergency purposes. For the most recent, official hazard map for a particular volcano, please seek out the proper institutional authorities on the matter. |
| EarthScope Consortium SAGE seismic stations/networks | EarthScope Consortium operates the NSF Geodetic Facility for the Advancement of Geoscience (GAGE) and NSF Seismological Facility for the Advancement of Geoscience (SAGE). The linked map shows the location of seismic stations from all available networks (permanent or temporary) within a radius of 0.18° (about 20 km at mid-latitudes) from the given location of Antuco. Users can customize a variety of filters and options in the left panel. Note that if there are no stations are known the map will default to show the entire world with a "No data matched request" error notice. |
| Large Eruptions of Antuco | Information about large Quaternary eruptions (VEI >= 4) is cataloged in the Large Magnitude Explosive Volcanic Eruptions (LaMEVE) database of the Volcano Global Risk Identification and Analysis Project (VOGRIPA). |
| EarthChem | EarthChem develops and maintains databases, software, and services that support the preservation, discovery, access and analysis of geochemical data, and facilitate their integration with the broad array of other available earth science parameters. EarthChem is operated by a joint team of disciplinary scientists, data scientists, data managers and information technology developers who are part of the NSF-funded data facility Integrated Earth Data Applications (IEDA). IEDA is a collaborative effort of EarthChem and the Marine Geoscience Data System (MGDS). |
