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Source

How do volcanoes erupt?

U.S. Geological Survey (n.d.). How do volcanoes erupt?. https://www.usgs.gov/faqs/how-do-volcanoes-erupt Retrieved 2026-09-06.

Authority tier
Primary authority
Type
webPage
URL
https://www.usgs.gov/faqs/how-do-volcanoes-erupt
Licence
Public domain (work of the U.S. Government)
Retrieved by Lithoen
2026-09-06
Last re-checked
2026-09-06 (verified)

Known metadata gaps

Recorded explicitly rather than guessed.

  • publishedYear: the USGS FAQ page displays no publication or last-revised date.
  • Lineage unresolved. This is explanatory writing that restates findings published elsewhere, and it names no sources Lithoen could follow. Every claim resting on it therefore has an unresolved evidentiary origin, and independence between it and any other source is UNKNOWN.