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Biliran (volcano)

volcano in the Philippines

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Record originEnglish Wikipedia
Text licenseCC BY-SA 4.0
Source revisionAug 10, 2026
Entity authorityQ17170926 ↗
Source-derived summary

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)

See also

List of volcanoes in the Philippines

List of active volcanoes in the Philippines

List of potentially active volcanoes in the Philippines

List of inactive volcanoes in the Philippines

Philippine Institute of Volcanology and Seismology

References

"Biliran". Global Volcanism Program. Smithsonian Institution.

Editorial summary

Begin with the source’s own compact description: “Biliran (volcano)” is volcano in the Philippines. The dossier treats that line as a proposition to test through Biliran, volcano and Philippines, not as a finished interpretation.

Editorial reviewA concise reference frame for defining the subject, testing terminology and identifying the institution closest to the evidence. The current lead gives the account dated anchors—1939, 1954, 1064, 1187—that can be checked directly. The selected authority fields contribute no independent date. For this dossier, Biliran, volcano and Philippines is the immediate research focus.
Editorial analysis

Why this record matters

The phrase “volcano in the Philippines” supplies a clear boundary for inquiry. It also exposes the unanswered questions: who defined that boundary, when it became stable and which sources sit outside it.

Evidence profile

Named sources, stable identifiers and responsible institutions provide the strongest route from overview to verifiable evidence. The source revision retrieved here is dated Aug 10, 2026. The linked authority identifier is Q17170926. Authority coordinates are 11.523, 124.535. 1 of 1 selected statements include explicit references; 0 carry qualifiers and 0 use preferred rank. The first chronological checks are 1939, 1954, 1064 and 1187.

Critical limits

Overview language is designed for orientation and should not be treated as a substitute for the evidence cited beneath it. The lead is largely declarative, so disagreement and counter-evidence require a deliberate search beyond the opening account. Authority statements aid reconciliation but still require their own references, qualifiers and ranks to be checked.

How to read it

Use the entry as an orientation point, then follow its citations and revision history. Names, dates and institutional relationships should be checked against the original record.

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Three-step research path

  1. Establish the record: confirm the title “Biliran (volcano)”, its source revision and the description used here.
  2. Expand the search: follow Biliran (volcano) primary sources, Biliran (volcano) archive and Biliran research across catalogues and specialist indexes.
  3. Test the account: compare the strongest cited source with the responsible institution’s current record and note any disagreement.

Questions for further research

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Source & attribution

This entry incorporates text from “Biliran (volcano)” on English Wikipedia. Contributors are listed in the page history. Text is available under the Creative Commons Attribution-ShareAlike 4.0 License. Selected authority identifiers and statements are retrieved from Wikidata under CC0; their references and qualifiers remain part of the verification path.