Ixtepeque

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  • Country
  • Volcanic Region
  • Primary Volcano Type
  • Last Known Eruption
  • 14.42°N
  • 89.68°W

  • 1292 m
    4238 ft

  • 342180
  • Latitude
  • Longitude

  • Summit
    Elevation

  • Volcano
    Number

The Global Volcanism Program has no activity reports for Ixtepeque.

The Global Volcanism Program has no Weekly Reports available for Ixtepeque.

The Global Volcanism Program has no Bulletin Reports available for Ixtepeque.

Basic Data

Volcano Number

Last Known Eruption

Elevation

Latitude
Longitude
342180

Unknown - Evidence Credible

1292 m / 4238 ft

14.42°N
89.68°W

Volcano Types

Lava dome(s)
Pyroclastic cone(s)

Rock Types

Major
Rhyolite
Basalt / Picro-Basalt
Andesite / Basaltic Andesite

Tectonic Setting

Subduction zone
Continental crust (> 25 km)

Population

Within 5 km
Within 10 km
Within 30 km
Within 100 km
131,906
131,906
374,232
8,263,727

Geological Summary

Ixtepeque volcano, which takes its name from the Aztec word for obsidian, is perhaps the largest obsidian field in North America. A 4 x 5 km wide rhyolitic obsidian lava field was erupted within the Ipala graben from a craterless vent along a NE-trending fissure that passes through adjacent rhyolitic lava domes and basaltic cinder cones. Obsidian from Ixtepeque has shown up at archaeological sites across Central America. Flat-lying pumice beds produced by explosive eruptions preceding lava effusion are found locally around the volcano. Other obsidian flows originated from lava domes NE of Ixtepeque. These rhyolitic vents are interspersed with basaltic cinder cones and lava flows. Laguna de Obrajuelo is a complex cone cut by a large crater more than a km in diameter. Initial basaltic eruptions were followed by the extrusion of obsidian flows and the eruption of rhyolitic pumice that were considered by Williams et al. (1964) to be only a few thousand years old.

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..

Williams H, McBirney A R, Dengo G, 1964. Geologic reconnaissance of southeastern Guatemala. Univ Calif Pub Geol Sci, 50: 1-62.

The Global Volcanism Program is not aware of any Holocene eruptions from Ixtepeque. If this volcano has had large eruptions (VEI >= 4) prior to 10,000 years ago, information might be found on the Ixtepeque page in the LaMEVE (Large Magnitude Explosive Volcanic Eruptions) database, a part of the Volcano Global Risk Identification and Analysis Project (VOGRIPA).

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

Ixtepece

Cones

Feature Name Feature Type Elevation Latitude Longitude
Brujillo, Cerro Lava cone 1212 m 14° 28' 0" N 89° 38' 0" W
Camposanto, Cerro Cone 14° 25' 0" N 89° 39' 0" W
Cerrón, Cerro el Cone 14° 22' 0" N 89° 42' 0" W
Iguanero, Cerro Pyroclastic cone 1040 m 14° 24' 0" N 89° 40' 0" W
Obrajuelo, Laguna Cone - Crater 14° 27' 0" N 89° 39' 0" W
Pereza, Cerro la Cone 14° 25' 0" N 89° 43' 0" W
Piedras, Cerro las Shield volcano 14° 25' 0" N 83° 36' 0" W
Pozas, Cerro las Cone 14° 22' 0" N 89° 41' 0" W
San Gaspar, Cerro Pyroclastic cone 1090 m 14° 26' 0" N 89° 40' 0" W
Voladero I, Cerro el Pyroclastic cone 1035 m 14° 24' 0" N 89° 43' 0" W

Domes

Feature Name Feature Type Elevation Latitude Longitude
Chaguitillo, Cerro Dome 14° 27' 0" N 89° 39' 0" W
Pino Redondo, Cerro Dome 14° 26' 0" N 89° 40' 0" W

Photo Gallery


Ixtepeque volcano is perhaps the largest obsidian field in North America. The low, forested volcano is not particularly imposing from the ground, but displays impressive arcuate flow ridges on aerial photos. Volcán Ixtepeque, which takes its name from the Aztec word for obsidian, is seen here from the west. A 4 x 5 km wide rhyolitic obsidian lava field was erupted within the Ipala graben from a craterless vent along a NE-trending fissure. Obsidian from Ixtepeque has been found at archaeological sites across Central America.

Photo by Lee Siebert, 1993 (Smithsonian Institution).

Smithsonian Sample Collections Database


A listing of samples from the Smithsonian collections will be available soon.

Affiliated Sites

Large Eruptions of Ixtepeque 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).
WOVOdat 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.
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).
MODVOLC - HIGP MODIS Thermal Alert System 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.
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.