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Mount Cagua, a 1133-m-high stratovolcano, lies at the NE tip of Luzon. The circular summit crater is 1.5 km in diameter, with steep, 60-m-high walls. Basaltic-andesite and basaltic lava effusion characterized the initial stage of volcanism during the early Pleistocene. From about 600,000 to 300,000 years ago thick pyroclastic flows covered the entire volcano. Recent periods of phreatomagmatic activity have produced ash flows. The forested volcano is locally known as the "Mountain of Fire." A phreatic explosion in 1860 may have been accompanied by a pyroclastic flow. Strong solfataric activity occurred in 1907, and thermal areas are located near the summit crater and on the NW to NNE flanks.
Summary of Holocene eruption dates and Volcanic Explosivity Indices (VEI).
|Start Date||Stop Date||Eruption Certainty||VEI||Evidence||Activity Area or Unit|
|1860 Oct||Unknown||Confirmed||2||Historical Observations|
This compilation of synonyms and subsidiary features may not be comprehensive. Features are organized into four major categories: Cones, Craters, Domes, and Thermal Features. Synonyms of features appear indented below the primary name. In some cases additional feature type, elevation, or location details are provided.
|Kawa | Caua | Gagua|
|Feature Name||Feature Type||Elevation||Latitude||Longitude|
|Mount Cagua, a 1133-m-high stratovolcano, lies just below and to the left of the center of this NASA Space Shuttle image. Palui Island lies off the tip of the peninsula, which forms the NE tip of Luzon and is about 30 km wide at its broadest point. Cagua, locally known as the "Mountain of Fire," has a circular summit crater 1.5 km in diameter. Its only known historical eruption consisted of a phreatic explosion in 1860 that may have been accompanied by a pyroclastic flow. Thermal areas are located on the NW to NNE flanks.
NASA Space Shuttle image STS033-76-23, 1989 (http://eol.jsc.nasa.gov/).
|The northernmost active volcano in Luzon is Mount Cagua, a 1133-m-high stratovolcano at the NE tip of Luzon. The forested volcano is locally known as the "Mountain of Fire." A phreatic explosion in 1860 may have been accompanied by a pyroclastic flow. Strong solfataric activity occurred in 1907, and thermal areas are located near the summit crater and on the NW to NNE flanks.
Photo courtesy of PHIVOLCS.
The following references have all been used during the compilation of data for this volcano, it is not a comprehensive bibliography. 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.
COMVOL, 1981. Catalogue of Philippine volcanoes and solfataric areas. Philippine Comm Volc, 87 p.
Defant M J, Jacques D, Maury R C, de Boer J, Joron J-L, 1989. Geochemistry and tectonic setting of the Luzon arc, Philippines. Geol Soc Amer Bull, 101: 663-672.
Defant M J, Maury R C, Joron J, Feigenson M D, Leterrier J, Bellon H, Jacques D, Richard M, 1990. The geochemistry and tectonic setting of the northern section of the Luzon arc (the Philippines and Taiwan). Tectonophysics, 183: 187-205.
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.
McDermott F, Defant M J, Hawkesworth C J, Maury R C, Joron J L, 1993. Isotope and trace element evidence for three component mixing in the genesis of the North Luzon arc lavas (Philippines). Contr Mineral Petr, 113: 9-23.
Neumann van Padang M, 1953. Philippine Islands and Cochin China. Catalog of Active Volcanoes of the World and Solfatara Fields, Rome: IAVCEI, 2: 1-49.
PHIVOLCS, 2004-. Volcanoes. http://www.phivolcs.dost.gov.ph/Volcanolist/.