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There are no activity reports for Colo [Una Una].
Summary of eruption dates and Volcanic Explosivity Indices (VEI).
|Start Date||Stop Date||Eruption Certainty||VEI||Evidence||Activity Area or Unit|
|1983 Jul 18||1983 Dec||Confirmed||4||Historical Observations||Gunung Colo|
|1938 ± 10 years||Unknown||Confirmed||1||Historical Observations||Gunung Colo|
|1898 May 2||1900 (?)||Confirmed||3||Historical Observations||Gunung Colo|
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.
Katili J A, Kartaadiputra L, Surio, 1963. Magma type and tectonic position of the Una-Una Island, Indonesia. Bull Volc, 26: 431-454.
Katili J A, Sudradjat A, 1984a. The devastating 1983 eruption of Colo volcano, Una-Una Island, central Sulawesi, Indonesia. Geol Jahrb, 75: 27-47.
Kusumadinata K, 1979. Data Dasar Gunungapi Indonesia. Bandung: Volc Surv Indonesia, 820 p.
Neumann van Padang M, 1951. Indonesia. Catalog of Active Volcanoes of the World and Solfatara Fields, Rome: IAVCEI, 1: 1-271.
Sudradjat A, 1977. . (pers. comm.).
Colo volcano forms the isolated small island of Una-Una in the middle of the Gulf of Tomini in northern Sulawesi. The broad, low volcano, whose summit is only 507 m above sea level, contains a 2-km-wide caldera with a small central cone. Only three eruptions have been recorded in historical time, but two of those caused widespread damage over much of the island. The last eruption, in 1983, produced pyroclastic flows that swept over most of the island shortly after all residents had been evacuated.