No latest activity reported for Santa Isabel.

Below is a summary of eruption dates and Volcanic Explosivity Indices (VEI).

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.)

Santa Isabel is the largest and highest of three coalescing basaltic shield volcanoes forming Bioko (Fernando Poo) Island. Lying on the continental shelf along the Cameroon Line, Santa Isabel is modified by the same NNE faults as Mt. Cameroon across the Gulf of Guinea on the African mainland. The 3007-m-high volcano contains numerous satellitic cinder cones. Santa Isabel is the only Bioko Island volcano with reported historical eruptions, although they are poorly documented. Three eruptions, during the late-19th and early-20th centuries, have been reported form SE flank vents.