Biliran (volcano)



Mount Biliran is a solfataric active complex volcano located in the island province of Biliran in the Philippines. The volcano caused the formation of the island.

Geological features

 * Rock Type: Hornblende andesite containing greenish and black hornblende
 * Tectonic Setting: Biliran Volcano is part of the curvilinear belt of Quaternary volcanoes in eastern Philippines, parallel to Phil. Trench to the east

Volcanic activity

 * Number of Historical Eruptions: 1
 * Latest Eruption/Activity: September 26, 1939
 * Site: crater
 * Eruption Character: Debris avalanche
 * Affected Areas/Remarks: Ashfall at Caibiran and adjoining areas (6.35 cm thick deposits)
 * Monitoring activity: Short-term monitoring in 1954

Physical features

 * Hotsprings:
 * Central Biliran – Libtong Thermal Areas (12 hot springs and one bubbling pool)
 * North Biliran – Panamao Thermal Area
 * Anas Thermal Area
 * South Biliran – Kalambis Thermal Area
 * Adjacent Volcanic Edifice:
 * Panamao (107 m asl)
 * Gumansan (1064 m asl)
 * Lauan (1187 m asl)
 * Suiro (1301 m asl)