Genovesa

Photo of this volcano
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  • Country
  • Volcanic Region
  • Primary Volcano Type
  • Last Known Eruption
  • 0.32°N
  • 89.958°W

  • 64 m
    210 ft

  • 353081
  • Latitude
  • Longitude

  • Summit
    Elevation

  • Volcano
    Number

The Global Volcanism Program has no activity reports for Genovesa.

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

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

The small, very low island of Genovesa is the top of a shield volcano, whose summit is only 64 m high. The surface of a summit crater lake is near sea level. A larger, 2-km-wide excentric caldera on the south side forms an embayment that is filled by Darwin Bay. Sediment filling Arctulus Lake, a crater in the center of the island, is less than 6000 years old. Youthful flows erupted from flank fissures cover much of the island and very fresh, glassy spatter is found on the volcano's flank (Simkin 1976, pers. comm.). No historical eruptions are known from Genovesa, although the fresh-looking lava flows suggest a very youthful age. Basaltic rocks on the island are noted for their abundant coarse plagioclases.

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

Tower

Craters

Feature Name Feature Type Elevation Latitude Longitude
Arcturus Lake Crater
Darwin Bay Caldera
A sea lion perches on a tilted slab of a lava flow dipping toward the west side of Darwin Bay. A 2-km-wide excentric caldera on the south side of Genovesa Island forms an embayment that is filled by the bay. The small, very low island of Genovesa is the top of a shield volcano, whose summit is only 64 m high. No historical eruptions are known from Genovesa, although the fresh-looking lava flows suggest a very youthful age.

Photo by Carter Hearn, 2004.

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.

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

McBirney A R, Williams H, 1969. Geology and petrology of the Galapagos Islands. Geol Soc Amer Mem, 118: 1-197.

Simkin T, 1976. . (pers. comm.).

White W M, McBirney A R, Duncan R A, 1993. Petrology and geochemistry of the Galapagos Islands: Portrait of a pathological mantle plume. J Geophys Res, 98: 19,533-19,563.

Volcano Types

Shield
Caldera

Tectonic Setting

Rift zone
Oceanic crust (< 15 km)

Rock Types

Major
Basalt / Picro-Basalt

Population

Within 5 km
Within 10 km
Within 30 km
Within 100 km
197
197
197
2,665

Affiliated Databases

Large Eruptions of Genovesa 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.