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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.

Mooser F, Meyer-Abich H, McBirney A R, 1958. Central America. {Catalog of Active Volcanoes of the World and Solfatara Fields}, Rome: IAVCEI, 6: 1-146

Weber H S, Wiesemann G, 1978. Mapa Geologico de la Republica de El Salvador/America Central. Bundesanstalt fur Geowissenschaften und Rohstoffe, Hannover, Germany, 1:100,000 scale geologic map in 6 sheets

Williams H, Meyer-Abich H, 1955. Volcanism in the southern part of El Salvador with particular reference to the collapse basins of Lakes Coatepeque and Ilopango. {Univ Calif Pub Geol Sci}, 32: 1-64

Conchagüita volcano occupies a small, 4-km-wide island in the Gulf of Fonseca across a narrow strait from Conchagua volcano. Late-stage eruptions formed a small, sharp-topped cone with a 100-m-wide summit crater at the southern end of the low 505-m-high island, and a youthful peninsula also extends from the island's eastern side. A crescent-shaped crater open to the west is located at the northern end of the island. Minor ash emissions in 1892 marked the only historical eruption from Conchagüita, the easternmost Holocene volcano in El Salvador.