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There are no activity reports for Coatepeque Caldera.
Available Weekly Reports
There are no Weekly Reports available for Coatepeque Caldera.
There are no Holocene eruptions known for Coatepeque Caldera. If this volcano has had large eruptions prior to 10,000 years ago, information might be found in the LaMEVE (Large Magnitude Explosive Volcanic Eruptions) database, a part of the Volcano Global Risk Identification and Analysis Project (VOGRIPA).
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.
IAVCEI, 1973-80. Post-Miocene Volcanoes of the World. IAVCEI Data Sheets, Rome: Internatl Assoc Volc Chemistry Earth's Interior..
Kutterolf S, Freundt A, Perez W, 2008. Pacific offshore record of plinian arc volcanism in Central America: 2. Tephra volumes and eruptive masses. Geochem Geophys Geosyst, 8: Q02S02, doi:10.1029/2007GC001791.
Pullinger C, 1998. Evolution of the Santa Ana volcanic complex, El Salvador. Unpublished MSci thesis, Michigan Tech Univ, 151 p.
Rose W I, Conway F M, Pullinger C R, Deino A, MacIntosh W C, Svitil K A, 1999. An improved age framework for late Quaternary silicic eruptions in northern Central America. Bull Volc, 61: 106-120.
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.
The 7 x 10 km Coatepeque caldera, its eastern side filled by a caldera lake, was formed by collapse of a group of stratovolcanoes immediately east of Santa Ana volcano. The height of the caldera rim increases to 800 m on the west, where it partially truncates Santa Ana volcano. The caldera was formed during a series of major rhyolitic explosive eruptions between about 72,000 and 51,000 years ago. Post-caldera eruptions included the formation of basaltic cinder cones and lava flows near the western margin of the caldera and the extrusion of a half dozen rhyodacitic lava domes along a NE-SW line near the caldera lake margins. The highest of the domes forms the wooded island of Isla de Cabra, or Cerro Grande. The age of the domes is not known precisely, but the youngest dome, Cerro Pacho, was estimated to have formed less than 10,000 years ago. Hot springs occur near the lake margins, but no verified historical eruptions have occurred from Coatepeque.