Cite this Report
April eruption reports probably false
During field observations between 15 and 27 November 1990 no eruptive activity was observed . . . . Reports of miners working SW of Pular (closer than the April witnesses, who were 75 km NE) suggest that the 24 April eruption never took place.
Information Contacts: M. Gardeweg, SERNAGEOMIN, Santiago.
The Global Volcanism Program has no Weekly Reports available for Pular.
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.
Cite this Report
Ash emission
Witnesses reported that "on 24 April at 1100 on a clear day with no clouds, a small eruption took place from Pular. It produced an explosion heard at El Laco (a Pacific Mining Company iron mine located 75 km NE; figure 3) and a column of black smoke that lasted just a few minutes above the summit, similar to those observed recently from Lascar." [but see 16:01] Geologists noted that the source of the 24 April eruption remains uncertain. Pular is believed to be Pleistocene in age.
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Figure 1. Sketch map of a portion of N Chile showing the locations of Pular and nearby volcanoes, and El Laco and other population centers. Courtesy of M. Gardeweg. |
The summit and flanks show signs of deep glacial erosion, including lateral moraines as low as 4,100 m. Pular is the northernmost member of the chain of volcanoes that bears the same name (Cordon Pular). None of the chain has had historic volcanic activity. Cerro Pajonales (24.20°S, 68.10°W), a satellite vent of Pular (5 km SW of the summit; figures 2 and 3), is a lava and dome complex believed to be Quaternary in age. Although evidence of glaciation has been noted on Cerro Pajonales, geologists believed it to be a more likely source of the recent activity.
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Figure 2. Sketch map of Pular from the Sierra Almeida quadrangle (map SG-19-3-4, 1:250,000, Instituto Geográfico Militar, Chile). |
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Figure 3. Geology map of Pular and surrounding region. Based on Gardeweg and others (in prep.) and Ramirez (1988). |
References. Gardeweg, M., Ramirez, C.F., and Davidson, J., in prep., Hoja Sierra de Almeida, Region de Antofagasta (1:250,000): Carta Geológica de Chile, Servicio Nacional de Geología y Minería.
Ramirez, C.F., 1988, Evidencias de Glaciación en el Macizo de los Volcanes Pular y Pajonales, Región de Antofagasta: Actas V Congr. Geol. Chileno, Tomo II, p. D143-D157.
Information Contacts: M. Gardeweg, SERNAGEOMIN, Santiago; Vinicio Travisany, CMP (Pacific Mining Company).
Cite this Report
April eruption reports probably false
During field observations between 15 and 27 November 1990 no eruptive activity was observed . . . . Reports of miners working SW of Pular (closer than the April witnesses, who were 75 km NE) suggest that the 24 April eruption never took place.
Information Contacts: M. Gardeweg, SERNAGEOMIN, Santiago.
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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| Palar | ||||
Cones |
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| Feature Name | Feature Type | Elevation | Latitude | Longitude |
| Pajonales, Cerro | Stratovolcano | 5958 m | 24° 14' 0" S | 68° 7' 0" W |
| Pular | Stratovolcano | |||
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There is data available for 0 confirmed Holocene eruptive periods.
[ 1990 Apr 24 - 1990 Apr 24 ] Uncertain Eruption
| Episode 1 | Eruption | |||||||||||||||||||||||||
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| 1990 Apr 24 - 1990 Apr 24 | Evidence from Unknown | ||||||||||||||||||||||||
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List of 3 Events for Episode 1
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There is no Deformation History data available for Pular.
There is no Emissions History data available for Pular.
Maps are not currently available due to technical issues.
There are no samples for Pular 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. |
| 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 Pular. 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 Pular. Users can customize the data search based on station or network names, location, and time window. Requires Adobe Flash Player. |
| DECADE Data | The DECADE portal, still in the developmental stage, serves as an example of the proposed interoperability between The Smithsonian Institution's Global Volcanism Program, the Mapping Gas Emissions (MaGa) Database, and the EarthChem Geochemical Portal. The Deep Earth Carbon Degassing (DECADE) initiative seeks to use new and established technologies to determine accurate global fluxes of volcanic CO2 to the atmosphere, but installing CO2 monitoring networks on 20 of the world's 150 most actively degassing volcanoes. The group uses related laboratory-based studies (direct gas sampling and analysis, melt inclusions) to provide new data for direct degassing of deep earth carbon to the atmosphere. |
| Large Eruptions of Pular | 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). |
Pular is the 12-km-long volcanic ridge below the center of this 29 October 2018 Planet Scope image (N is at the top; this image is approximately 41 km across). The lava flows to the W are at El Negrillar. The edifice contains Cerro Pular at the NE end and Cerro Pajonales at the SW.
