How do volcanologists determine the height of eruptive plumes from Yellowstone’s past explosive eruptions? Ironically, you ...

Yellowstone National Park has long captured the imagination of scientists and the public alike, particularly due to its ...

To time how fast a sprinter runs, you just need a stopwatch. To time how fast magma moves, you need to know a little bit ...

Map of the northwestern United States showing major volcanic features associated with the mantle plume currently underneath Yellowstone caldera. Colors indicate general basaltic (blues ...

Geologically speaking, things are always changing at Yellowstone — especially in hydrothermal areas. It’s simply the nature of the complex hydrothermal system overlying one of the planet’s largest ...

But the stand of trees is hiding a rhyolite lava flow, a thick type of lava that tends to form short, chunky flows throughout the Yellowstone Caldera. The new thermal feature stems from the base ...

Yellowstone Caldera Chronicles is a weekly column written by scientists and collaborators of the Yellowstone Volcano Observatory. This week's contribution is from Stanley Mordensky, geologist with ...

A park scientist noticed it about two weeks after a hydrothermal explosion along a boardwalk during the park’s overactive ...