San Joaquin

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  • Country
  • Subregion Name
  • Primary Volcano Type
  • Last Known Eruption
  • 3.35°N
  • 8.63°E

  • 2009 m
    6590 ft

  • 224003
  • Latitude
  • Longitude

  • Summit
    Elevation

  • Volcano
    Number

There are no activity reports for San Joaquin.



 Available Weekly Reports

There are no Weekly Reports available for San Joaquin.

There are no Holocene eruptions known for San Joaquin. If this volcano has had large eruptions prior to 10,000 years ago, information might be found in the LaMEVE (Large Magnitude Explosive Volcanic Eruptions) database, a part of the Volcano Global Risk Identification and Analysis Project (VOGRIPA).

The following references are the sources used for data regarding this volcano. References are linked directly to our volcano data file. 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. Additional discussion of data sources can be found under Volcano Data Criteria.

Deruelle B, Kambou R, Joron J-L, 1990. New petrological data on volcanic rocks of Bioko Island (Equatorial Guinea). IAVCEI 1990 Internatl Volc Cong, Mainz, Abs, (unpaginated).

Fitton J G, 1987. The Cameroon line, West Africa: a comparison between oceanic and continental alkaline volcanism. In: Fitton J G and Upton B G J (eds) {Alkaline Igneous Rocks}, Geol Soc Amer Spec Pub 30: 273-291.

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

Liniger-Goumaz M, 1988. Historical Dictionary of Equatorial Guinea. Metuchen, New Jersey: Scarecrow Press, African Historical Dictionaries, no 21.

Vincent P M, 1992. . (pers. comm.).

San Joaquin, also known as Pico Biao or Pico do Moka, is a 2009-m-high basaltic shield volcano on the SE side of Bioko (Fernando Poo) Island. A small lake-filled caldera cuts the summit of the forested shield volcano, and a crater lake lies on the NE flank of the volcano. San Joaquin was classified as having been active during the last 2000 years (International Association of Volcanology and Chemistry of the Earth's Interior, 1973), although little is known about its geologic history.