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  • Country
  • Subregion Name
  • Primary Volcano Type
  • Last Known Eruption
  • 20.469°N
  • 122.01°E

  • 1009 m
    3310 ft

  • 274060
  • Latitude
  • Longitude

  • Summit

  • Volcano

There are no activity reports for Iraya.

 Available Weekly Reports

There are no Weekly Reports available for Iraya.

Summary of eruption dates and Volcanic Explosivity Indices (VEI).

Start Date Stop Date Eruption Certainty VEI Evidence Activity Area or Unit
1454 (?) Unknown Confirmed   Historical Observations
0470 ± 50 years Unknown Confirmed   Radiocarbon (uncorrected)
0250 ± 200 years Unknown Confirmed   Radiocarbon (uncorrected)

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.

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..

PHIVOLCS, 1991. Volcanoes of the Philippines. Manila: PHIVOLCS Press, 41 p.

PHIVOLCS, 2004-. Volcanoes.

Richard M, Maury R C, Bellon H, Stephan J F, Boirat J M, Calderon A, 1986. Geology of Mt. Iraya volcano and Batan Island, northern Philippines. Philippine J Volc, 3: 1-27.

The morphologically youthful Iraya volcano, at the north end of Batan Island, is the northernmost active volcano in the Philippines. Iraya is the most prominent feature of the 20-km-long, dumbbell-shaped Batan island, located in the Luzon Strait between Luzon and Taiwan. The 1009-m-high Quaternary stratovolcano has a 1.5-km-wide summit crater, which is largely filled by a younger cone that forms the summit of the volcano. Observed late-Pleistocene and Holocene products are exclusively explosive. The youngest dated unit is a pyroclastic-flow deposit radiocarbon dated at about 1500 years ago (Richard et al., 1986). The Philippines Institute of Volcanology and Seismology (2004-) listed an eruption in 1454 CE of unspecified character.