The Global Volcanism Program has no activity reports available for Cerro Overo.
The Global Volcanism Program has no Weekly Reports available for Cerro Overo.
The Global Volcanism Program has no Bulletin Reports available for Cerro Overo.
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.
Craters |
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| Feature Name | Feature Type | Elevation | Latitude | Longitude |
| Cerro Overo | Maar | 4520 m | 23° 31' 3" S | 67° 39' 33" W |
Domes |
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| Feature Name | Feature Type | Elevation | Latitude | Longitude |
| La Albondiga Grande | Dome | 4551 m | 23° 31' 36" S | 67° 41' 5" W |
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The Global Volcanism Program is not aware of any Holocene eruptions from Cerro Overo. If this volcano has had large eruptions (VEI >= 4) prior to 12,000 years ago, information might be found on the Cerro Overo page in the LaMEVE (Large Magnitude Explosive Volcanic Eruptions) database, a part of the Volcano Global Risk Identification and Analysis Project (VOGRIPA).
There is data available for 2 deformation periods. Expand each entry for additional details.
| Start Date: 2003 | Stop Date: 2010 | Direction: Uplift | Method: InSAR |
| Magnitude: Unknown | Spatial Extent: 20.00 km | Latitude: -24.000 | Longitude: -67.000 |
Remarks: Deformation east of Cerro Overo alternated from subsidence between 1992 and 2003 to uplift from 2003 to at least 2010. | |||
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Deformation at Cerro Overo. Maps showing collocated subsidence and uplift from individual interferograms spanning different dates. Black triangles are from de Silva and Francis [1991], the white triangle marks the location of Cordon Puntas Negras from Siebert et al. [2011]. The gray dotted line is a major international route between Argentina and Chile known as ?Paso Sico.? The diameter of the deforming region is approximated by the red dashed outline. Time series deformation history from track 10 is shown at the bottom, with ?4 mm/yr average subsidence between 1992 and 2003, followed by 5 mm/yr uplift through 2010. From: Henderson and Pritchard 2013. |
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Reference List: Henderson and Pritchard 2013.
Full References:
Henderson, S. T., and M. E. Pritchard, 2013. Decadal volcanic deformation in the central Andes volcanic zone revealed by InSAR time series. Geochemistry Geophysics Geosystems, 14: 1358–1374. https://doi.org/10.1002.ggge.20074
| Start Date: 1992 | Stop Date: 2003 | Direction: Subsidence | Method: InSAR |
| Magnitude: Unknown | Spatial Extent: 20.00 km | Latitude: -24.000 | Longitude: -67.000 |
Remarks: Deformation east of Cerro Overo alternated from subsidence between 1992 and 2003 to uplift from 2003 to at least 2010. | |||
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Deformation at Cerro Overo. Maps showing collocated subsidence and uplift from individual interferograms spanning different dates. Black triangles are from de Silva and Francis [1991], the white triangle marks the location of Cordon Puntas Negras from Siebert et al. [2011]. The gray dotted line is a major international route between Argentina and Chile known as ?Paso Sico.? The diameter of the deforming region is approximated by the red dashed outline. Time series deformation history from track 10 is shown at the bottom, with ?4 mm/yr average subsidence between 1992 and 2003, followed by 5 mm/yr uplift through 2010. From: Henderson and Pritchard 2013. |
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Reference List: Henderson and Pritchard 2013.
Full References:
Henderson, S. T., and M. E. Pritchard, 2013. Decadal volcanic deformation in the central Andes volcanic zone revealed by InSAR time series. Geochemistry Geophysics Geosystems, 14: 1358–1374. https://doi.org/10.1002.ggge.20074
There is no Emissions History data available for Cerro Overo.
The solitary Holocene Cerro Overo maar, seen here from the south, was erupted through basement ignimbrites of Pliocene age, which form the light-colored rocks in the crater wall. A thin blanket of dark ejecta from the eruption that created the 600-m-wide, 80-m-deep maar caps its rim. Pleistocene volcanoes of the central Chilean Andes form the horizon.
Colachi (left) is an andesitic-dacitic stratovolcano whose most recent activity produced pristine silicic lava flows of probable Holocene age. The largest of these covers a 7 km2 area on the saddle between Colachi and the neighboring volcano of Acamarachi (center horizon). This aerial view from the west also shows the conical peak of Aguas Calientes (far right), a twin volcano of Lascar volcano, whose slopes appear at the lower right. The Talabre valley in the center foreground is partially filled by an andesitic lava flow from Lascar.
Cerro Overo maar in the foreground was formed by phreatomagmatic explosions. A thin, roughly 1.5-m-thick, dark-colored ejecta blanket surrounds the 600-m-wide, 80-m-deep maar. The maar is located on the lower NE flank of Volcán Chiliques and was erupted along a regional fault through basement ignimbrites of Pliocene age from the La Pacana caldera. On the horizon to the right is the east side of Tumisa and the dome "Negro de Barriales." On the left is the Lejia stratovolcano and caldera. Laguna Agua Caliente is at the right-center.Maps are not currently available due to technical issues.
There are no samples for Cerro Overo 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. |
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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. |
| IRIS seismic stations/networks | Incorporated Research Institutions for Seismology (IRIS) Data Services map showing 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 Cerro Overo. 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. |
| UNAVCO GPS/GNSS stations | Geodetic Data Services map from UNAVCO showing the location of GPS/GNSS stations from all available networks (permanent or temporary) within a radius of 20 km from the given location of Cerro Overo. Users can customize the data search based on station or network names, location, and time window. Requires Adobe Flash Player. |
| Large Eruptions of Cerro Overo | 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). |
