Isla Zacate Grande

Photo of this volcano
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  • Country
  • Volcanic Region
  • Primary Volcano Type
  • Last Known Eruption
  • 13.33°N
  • 87.63°W

  • 640 m
    2099 ft

  • 343140
  • Latitude
  • Longitude

  • Summit
    Elevation

  • Volcano
    Number

The Global Volcanism Program has no activity reports for Isla Zacate Grande.

The Global Volcanism Program has no Weekly Reports available for Isla Zacate Grande.

The Global Volcanism Program has no Bulletin Reports available for Isla Zacate Grande.

Zacate Grande volcano forms a low 7 x 10 km wide island across a narrow strait from the end of a peninsula surrounded on three sides by the Gulf of Fonseca and Chismuyo bay. At least seven satellitic cones, some of which form small islands offshore, are located from the NE to SE base of the broad 640-m-high basaltic stratovolcano. Some of these, including the symmetrical cone of Isla Gueguensi in the tidal flats about 3 km east of the base of Zacate Grande, are of probable Holocene age (Carr 1992, pers. comm.). In contrast to neighboring Isla El Tigre volcano to the south, Zacate Grande itself is extensively eroded, and deep valleys extend from the summit ridges to the base of the volcano.

The Global Volcanism Program is not aware of any Holocene eruptions from Isla Zacate Grande. If this volcano has had large eruptions (VEI >= 4) prior to 10,000 years ago, information might be found on the Isla Zacate Grande 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.


Cones

Feature Name Feature Type Elevation Latitude Longitude
Gueguensi, Isla Cone 100 m 13° 21' 0" N 87° 34' 0" w
Rocamel, Cerro Cone
Zacate Grande volcano, seen here from Punta el Chiquirín at the eastern tip of El Salvador, forms a low 7 x 10 km wide island across a narrow strait from the end of a peninsula extending into the Gulf of Fonseca. At least seven satellitic cones are located near the base of the 640-m-high dissected basaltic stratovolcano. Some of these, including the symmetrical cone of Isla Gueguensi, are of probable Holocene age. The northern tip of the Salvadoran island of Zacatillo forms the ridge in the center of the photo.

Photo by Rick Wunderman, 1999 (Smithsonian Institution).

The following references have all been used during the compilation of data for this volcano, it is not a comprehensive bibliography. Discussion of another volcano or eruption (sometimes far from the one that is the subject of the manuscript) may produce a citation that is not at all apparent from the title.

Carr M J, 1992. . (pers. comm.).

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

Walker J A, Patino L C, Cameron B I, Carr M J, 2000. Petrogenetic insights provided by compositional transects across the Central American Arc; southeastern Guatemala and Honduras. J Geophys Res, 105: 18,949-18,963.

Williams H, McBirney A R, 1969. Volcanic history of Honduras. Univ Calif Pub Geol Sci, 85: 1-101.

Volcano Types

Stratovolcano
Pyroclastic cone(s)

Tectonic Setting

Subduction zone
Continental crust (> 25 km)

Rock Types

Major
Basalt / Picro-Basalt
Andesite / Basaltic Andesite

Population

Within 5 km
Within 10 km
Within 30 km
Within 100 km
7,059
11,942
195,736
3,647,832

Affiliated Databases

Large Eruptions of Isla Zacate Grande 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).
Smithsonian Collections Search the Smithsonian's NMNH Department of Mineral Sciences collections database. Go to the "Search Rocks and Ores" tab and use the Volcano Name drop-down to find samples.