Photo of this volcano
  • United Kingdom
  • Atlantic Ocean
  • Stratovolcano
  • Unknown - Evidence Credible
  • Country
  • Volcanic Region
  • Primary Volcano Type
  • Last Known Eruption
  • 7.95°S
  • 14.37°W

  • 858 m
    2814 ft

  • 385050
  • Latitude
  • Longitude

  • Summit

  • Volcano

The Global Volcanism Program has no activity reports for Ascension.

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

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

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

Photo Gallery

Ascensión Island, located just west of the Mid-Atlantic Ridge, was discovered on Ascención Day, 1501, by the Portuguese navigator Joao da Nova. Today a center for telephone and radio communications and satellite tracking, Ascensión is the summit of a massive stratovolcano rising 3000 m above the sea floor. The isolated island, about 1130 km from the nearest land, has had no historical eruptions, but is dotted with more than 100 youthful parasitic cones and lava domes. Young lava flows can be seen along the NW and SW coasts.

NASA Space Shuttle image, 2003 (
See title for photo information.
A view to the NW from Green Mountain shows The Sisters (left) and Perfect Crater (right-center), cinder cones on the flanks of the Ascensión Island volcano, which lies just west of the Mid-Atlantic Ridge. The isolated island is dotted with more than 100 youthful parasitic cones and lava domes, many aligned along two fissures. Although no eruptive activity has occurred since its discovery during the 16th century, many volcanic features on Ascensión have a very youthful appearance.

Photo by Jon Davidson (University of Durham).
See title for photo information.

Smithsonian Sample Collections Database

The following 65 samples associated with this volcano can be found in the Smithsonian's NMNH Department of Mineral Sciences collections. Catalog number links will open a window with more information.

Catalog Number Sample Description
NMNH 111123-230 Obsidian
NMNH 111313-1 Granite
NMNH 111313-10 Granite
NMNH 111313-11 Granite
NMNH 111313-12 Granite
NMNH 111313-13 Granite
NMNH 111313-14 Granite
NMNH 111313-15 Granite
NMNH 111313-16 Granite
NMNH 111313-17 Granite
NMNH 111313-18 Granite
NMNH 111313-19 Granite
NMNH 111313-2 Granite
NMNH 111313-20 Granite
NMNH 111313-21 Granite
NMNH 111313-3 Granite
NMNH 111313-4 Granite
NMNH 111313-5 Granite
NMNH 111313-6 Granite
NMNH 111313-7 Granite
NMNH 111313-8 Granite
NMNH 111313-9 Granite
NMNH 112291-1 Granite
NMNH 112292-1 Fumarole deposit
NMNH 112293-1 Basalt
NMNH 112294-1 Concretion
NMNH 112295-1 Trachyte
NMNH 112296-1 Basalt
NMNH 112297-1 Trachyte
NMNH 112298-1 Basalt
NMNH 112299-1 Granite
NMNH 112300-1 Basalt
NMNH 112301-1 Basalt
NMNH 112302-1 Gneiss
NMNH 112303-1 Gneiss
NMNH 112304-1 Gneiss
NMNH 112305-1 Gneiss
NMNH 112306-1 Gneiss
NMNH 112307-1 Gneiss
NMNH 112308-1 Gneiss
NMNH 112309-1 Gneiss
NMNH 112310-1 Gneiss
NMNH 112311-1 Basalt
NMNH 112312-1 Gneiss
NMNH 112313-1 Gneiss
NMNH 112314-1 Gneiss
NMNH 112315-1 Gneiss
NMNH 112316-1 Gneiss
NMNH 112317-1 Gneiss
NMNH 112318-1 Basalt
NMNH 112319-1 Basalt
NMNH 112320-1 Granite
NMNH 112321-1 Gneiss
NMNH 112322-1 Welded tuff
NMNH 112323-1 Basalt
NMNH 112324-1 Granite
NMNH 112325-1 Granite
NMNH 113436-1 Obsidian
NMNH 113436-2 Obsidian
NMNH 113436-3 Obsidian
NMNH 113436-4 Obsidian
NMNH 113436-5 Obsidian
NMNH 113436-6 Obsidian
NMNH 116268 Olivine-basalt
NMNH 36281 Hyalo-liparite obsidian

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