Medicine Lake

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

jlball@usgs.gov — Tue, 11 Jul 2023 17:00:00 EDT

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 example of an eruption of relatively fluid lava simultaneously at multiple points along a fissure in the earth, resulting in "curtains of fire". These fascinating phenomena provide a spectacular glimpse into the geologic processes driving eruptions.

Which U.S. volcanoes pose a threat?

rmcclymont@usgs.gov — Wed, 19 Dec 2018 06:30:00 EST

USGS Volcanic Threat Assessment updates the 2005 rankings.

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

lwestby@usgs.gov — Mon, 8 Jan 2018 19:00:00 EST

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