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There are no activity reports for Thule Islands.
Available Weekly Reports
There are no Weekly Reports available for Thule Islands.
Summary of eruption dates and Volcanic Explosivity Indices (VEI).
|Start Date||Stop Date||Eruption Certainty||VEI||Evidence||Activity Area or Unit|
|1975 ± 12 years||Unknown||Confirmed||1||Historical Observations||South flank of Bellinghausen Island|
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, 1968. Comparative volcanology and petrology of the Atlantic island arcs. Bull Volc, 32: 189-206.
Berninghausen W H, Neumann van Padang M, 1960. Antarctica. Catalog of Active Volcanoes of the World and Solfatara Fields, Rome: IAVCEI, 10: 1-32.
IAVCEI, 1973-80. Post-Miocene Volcanoes of the World. IAVCEI Data Sheets, Rome: Internatl Assoc Volc Chemistry Earth's Interior..
Katsui Y (ed), 1971. List of the World Active Volcanoes. Volc Soc Japan draft ms, (limited circulation), 160 p.
LeMasurier W E, Thomson J W (eds), 1990. Volcanoes of the Antarctic Plate and Southern Oceans. Washington, D C: Amer Geophys Union, 487 p.
Smellie J L, Morris P, Leat P T, Turner D B, Houghton D, 1998. Submarine caldera and other volcanic observations in Southern Thule, South Sandwich Islands. Antarctic Sci, 10: 171-172.
The Thule Islands, at the southern end of the South Sandwich island arc bordering the Scotia Sea, consist of three stratovolcanoes constructed along an E-W-trending line. An ice-filled 1.5-2 km wide caldera truncates the summit of andesitic-dacitic Thule, the westernmost island, and a 4.3 x 4.8 km submarine caldera forms Douglas Strait between Thule and basaltic-to-dacitic Cook Island. Another possible submarine caldera lies east of Cook Island and south of basaltic-andesite Bellingshausen, the easternmost island. The age of Cook Island is uncertain, but steam was observed at the summit crater of Thule Island in 1962, and ash was seen on the surface of the ice there and on Bellingshausen Island, indicating possible 20th-century eruptions (Baker, 1968). Bellingshausen Island has a youthful, relatively ice-free profile and an extensive well-preserved lava field on its southern flank. A small explosion crater formed on the southern flank of Bellinghausen Island sometime between 1964 and 1986.