Global Volcanism Program | Cuernos de Negros

The Global Volcanism Program has no activity reports available for Cuernos de Negros.

The Global Volcanism Program has no Weekly Reports available for Cuernos de Negros.

The Global Volcanism Program has no Bulletin Reports available for Cuernos de Negros.

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

Magaso | Magasu

Cones

Feature Name

Feature Type

Elevation

Latitude

Longitude

Guinsayawan, Mount

Cone

1781 m

9° 20' 0" N

123° 5' 0" E

Talines, Mount

Cone

1512 m

9° 10' 0" N

123° 7' 0" E

Domes

Feature Name

Feature Type

Elevation

Latitude

Longitude

Guintabon Dome

Dome

1216 m

9° 22' 0" N

123° 8' 0" E

Thermal

Feature Name

Feature Type

Elevation

Latitude

Longitude

Palinpinon

Thermal

9° 18' 0" N

123° 9' 0" E

Basic Data

Volcano Number

Last Known Eruption

Elevation

Latitude
Longitude

272010

Pleistocene

1,862 m / 6,109 ft

9.25°N
123.17°E

Morphology

Volcano Landform
Composite

Volcano Types
Complex
Stratovolcano(es)
Lava dome(s)

Rock Types

Major
Andesite / Basaltic Andesite
Dacite
Basalt / Picro-Basalt

Tectonic Setting

Subduction zone
Continental crust (> 25 km)

Population

Within 5 km
Within 10 km
Within 30 km
Within 100 km

1,458
39,681
531,644
2,960,980

Geological Summary

Cuernos de Negros (also known as Magaso) is a large stratovolcano complex at the SE tip of Negros Island. The eastern side of the complex consists of two stratovolcanoes and a lava dome; two crater lakes up to 1.5 km in diameter are present. The lower western part of the complex contains four volcanic centers. The small summit crater of Magaso, the highest peak of the complex, rises above the city of Dumaguete and contains fumaroles; two sulfuric springs are found on the ESE flank, with hot springs on the NE flank. The youngest radiocarbon date obtained was 14,000 years BP from a dacitic breccia, and a younger andesitic unit is present. An increase in fumarolic activity took place after a major tectonic earthquake in 1902. The Palinpinon geothermal field is located south of the Okoy River on the N flank.

References

The following references have all been used during the compilation of data for this volcano, it is not a comprehensive bibliography.

IAVCEI, 1973-80. Post-Miocene Volcanoes of the World. IAVCEI Data Sheets, Rome: Internatl Assoc Volc Chemistry Earth's Interior.

Neumann van Padang M, 1953. Philippine Islands and Cochin China. Catalog of Active Volcanoes of the World and Solfatara Fields, Rome: IAVCEI, 2: 1-49.

PHIVOLCS, 2018-. Volcanoes of the Philippines. https://www.phivolcs.dost.gov.ph/index.php/volcano-hazard/volcanoes-of-the-philippines.

Rae A J, Cooke D R, Phillips D, Zaide-Delfin M, 2004. The nature of magmatism at Palinpinon geothermal field, Negros Island, Philippines: implications for geothermal activity and regional tectonics. J. Volcanol. Geotherm. Res., 129: 321-342.

Solidum R U, Castillo P R, Hawkins J W, 2003. Geochemistry of lavas from Negros Arc, west central Philippines: insights into the contribution from the subducting slab. Geochemistry Geophysics Geosystems, 4: 9008. https://doi.org/10.1029/2003GC000513

von Biedersee H, Pichler H, 1995. The Canlaon and its neighbouring volcanoes in the Negros Belt/Philippines. J Southeast Asian Earth Sci, 11: 111-123.

Eruptive History

The Global Volcanism Program is not aware of any Holocene eruptions from Cuernos de Negros. If this volcano has had large eruptions (VEI >= 4) prior to 12,000 years ago, information might be found on the Cuernos de Negros page in the LaMEVE (Large Magnitude Explosive Volcanic Eruptions) database, a part of the Volcano Global Risk Identification and Analysis Project (VOGRIPA).

Deformation History

There is no Deformation History data available for Cuernos de Negros.

Emission History

There is no Emissions History data available for Cuernos de Negros.

Photo Gallery

Magaso, also known as Cuernos de Negros, is a large stratovolcano that anchors the SE tip of Negros Island. The volcano is located just right of center in the cloud-covered portion of SE Negros Island in this Space Shuttle image (with north to the upper right), directly across the channel and in line with the SW tip of Cebu Island at the right side of the image. No historical eruptions are known from Magaso, but the summit crater is fumarolically active, and the Palinpinon geothermal field are located at its base.

NASA Space Shuttle image STS61-40-74, 1985 (http://eol.jsc.nasa.gov/).

The broad Cuernos de Negros volcanic complex is seen here from the small island of Apo, 7 km SE of the city of Zamboanguita at the southern end of Negros Island. The eastern side of the complex consists of two cones and a lava dome with two crater lakes up to 1.5 km in diameter. The small summit crater of Magaso, the highest peak of the complex, rises above the city of Dumaguete and contains fumaroles. The Palinpinon geothermal field is located on the north side of the volcano.

Photo by Arne Kuilman, 2007.

Cuernos de Negros is a large volcano composed of multiple edifices including Mount Talines, Mount Guinsayawan, and Guintabon Dome, seen in this June 2017 Planet Labs satellite image monthly mosaic (N is at the top; this image is approximately 24 km across). The Magaso summit crater contains active fumaroles and the Palinpinon geothermal field is on a N flank.

Satellite image courtesy of Planet Labs Inc., 2017 (https://www.planet.com/).

GVP Map Holdings

Maps are not currently available due to technical issues.

Smithsonian Sample Collections Database

There are no samples for Cuernos de Negros in the Smithsonian's NMNH Department of Mineral Sciences Rock and Ore collection.

External Sites

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.

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 Cuernos de Negros. 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 Cuernos de Negros. Users can customize the data search based on station or network names, location, and time window. Requires Adobe Flash Player.

Large Eruptions of Cuernos de Negros

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).