San Joaquin

Photo of this volcano
  • Equatorial Guinea
  • Africa and Red Sea
  • Shield
  • Unknown - Evidence Credible
  • Country
  • Volcanic Region
  • Primary Volcano Type
  • Last Known Eruption
  • 3.35°N
  • 8.63°E

  • 2009 m
    6590 ft

  • 224003
  • Latitude
  • Longitude

  • Summit

  • Volcano

The Global Volcanism Program has no activity reports for San Joaquin.

The Global Volcanism Program has no Weekly Reports available for San Joaquin.

The Global Volcanism Program has no Bulletin Reports available for San Joaquin.

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.

Eruptive History

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

Emission History

There is no Emissions History data available for San Joaquin.

Photo Gallery

A dark-colored lake partially fills a small caldera (top-center) occupying the summit of San Joaquin volcano in this NASA Landsat view with north to the top. This basaltic shield volcano, also known as Pico Biao, lies on the SE side of Bioko (Fernando Poo) Island in the Gulf of Guinea. Part of the broad summit caldera of neighboring San Carlos volcano can be seen at the left.

NASA Landsat7 image (
See title for photo information.
Smithsonian Sample Collections Database

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

Affiliated Sites