News

The upper East Rift Zone (UERZ) of Kīlauea was a shaky place this past weekend. This region extends southeast from Kaluapele (Kīlauea’s summit caldera...

Rhyolite is the most abundant rock in Yellowstone, and it contains about 75% silica. When it reacts with hot groundwater, much of the silica ends up...

On May 15, 2024, our friend and colleague Ed Brown, Associate Director for Infrastructure and Facilities for the USGS Volcano Science Center (VSC)...

What does a beachball have to do with an earthquake?  Turns out, beachballs are key to understanding the characteristics of the fault that slipped to...

During the most active portion of their life cycle, called the shield stage, Hawaiian volcanoes erupt frequently and mostly produce a rock type called...

Over the past several months, small magnitude earthquakes have been located at Mount St. Helens. The seismicity is similar to what was observed at...

Want to know the number and pattern of earthquakes that occurred in the Yellowstone region in 2023?  Or what interesting new geyser activity took...

Over the past few years, eruptions of Kīlauea volcano on the Island of Hawai‘i have happened in remote regions and lava flows have not directly...

Argon dating is a powerful tool for determining when volcanoes erupted in the past. This technique works on a multitude of volcanic materials—from...

Kīlauea began erupting from fissures southwest of Kaluapele (the summit caldera) just after midnight on June 3; the eruption ceased just nine hours...