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Examining early 20th-century reports of "activity" at Medicine Lake's Glass Mountain

Examining early 20th-century reports of "activity" at Medicine Lake's Glass Mountain

In the early days of volcanology in California, scientists were still working out the timelines of recent volcanic activity. Without today's...

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Fall into a burning (curtain) of fire with fissure eruptions

Fall into a burning (curtain) of fire with fissure eruptions

If you've been following the latest geological news, you'll have noticed the brand new eruption on Iceland's Reykjanes Peninsula. It's a classic...

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Which U.S. volcanoes pose a threat?

Which U.S. volcanoes pose a threat?

USGS Volcanic Threat Assessment updates the 2005 rankings.

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Geologic maps lay the foundation for this virtual tour of western states volcanoes.

Geologic maps lay the foundation for this virtual tour of western states volcanoes.

Take a virtual geologic tour in the USGS Geonarrative, Volcanic Landscapes.

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