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There are no activity reports for Tristan da Cunha.
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There are no Weekly Reports available for Tristan da Cunha.
Summary of eruption dates and Volcanic Explosivity Indices (VEI).
|Start Date||Stop Date||Eruption Certainty||VEI||Evidence||Activity Area or Unit|
|1961 Oct 10||1962 Mar 15||Confirmed||2||Historical Observations||North flank|
|1700 ± 50 years||Unknown||Confirmed||Tephrochronology||South flank|
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.
Baker P E, Gass I G, Harris P G, LeMaitre R W, 1964. Vulcanological report on the Royal Society expedition to Tristan de Cunha. Phil Trans Roy Soc London, 256: 439-578.
Chevallier L, Verwoerd W J, 1987. A dynamic interpretation of Tristan da Cunha volcano, South Atlantic Ocean. J Volc Geotherm Res, 34: 35-49.
IAVCEI, 1973-80. Post-Miocene Volcanoes of the World. IAVCEI Data Sheets, Rome: Internatl Assoc Volc Chemistry Earth's Interior..
Neumann van Padang M, Richards A F, Machado F, Bravo T, Baker P E, Le Maitre R W, 1967. Atlantic Ocean. Catalog of Active Volcanoes of the World and Solfatara Fields, Rome: IAVCEI, 21: 1-128.
Tristan da Cunha is a 13-km-wide island volcano lying about 500 km east of the crest of the Mid-Atlantic Ridge just south of the latitudes of Buenos Aires and Cape Town. The 2060-m-high shield volcano is bounded on most sides by high cliffs. Lava flows dominate both the low-angle base and the steep upper flanks, although pyroclastic cones ringing the central cone are scattered around the lower flanks. Eruptions have occurred from the 300-m-wide summit crater, Queen Mary's Peak, which contains a small lake, and from numerous flank vents, some of which occurred from radial fissures. Radial dike swarms are prominently exposed on all sides of the island. Numerous strombolian cinder cones occur on the flanks of the volcano along both concentric ring structures and NNW- and ENE-trending radial fissures. The only historical eruption on Tristan da Cunha occurred during 1961 from a northshore vent and forced the evacuation of the island's only settlement.