Though the volcano’s magma chambers could hold enough material for a caldera-forming event, none of them are likely to erupt soon.

Seismic imaging of the Yellowstone system has also identified a deeper magma body, likely composed of basalt — Earth’s most primitive magma type and the heat engine that helps to generate and sustain ...

Deep within the Yellowstone Caldera, the bowl-shaped rock cauldron at the heart of Yellowstone National Park, there’s a clue ...

There are two main types of magma here: basaltic and rhyolitic. Basaltic magma flows more easily with low resistance, whereas rhyolitic magma is thicker and needs more pressure to erupt.

A detailed look at Yellowstone's magma storage system finds that only one region is likely to host liquid magma in the long ...

Two types of magma exist under the park. One is basaltic magma, which triggers most volcanic activity on Earth. It erupts more easily because it has a lower resistance to flow, but underneath ...

The reservoirs, they found, hold basaltic magma in their lower parts and rhyolitic magma in their upper parts. The team was even able to make estimations regarding amounts—they found there was a ...

A map of the magma reservoirs under Yellowstone. Yellow represents basalt, red rhyolite, and orange basalt-to-rhyolite transition zones. The purple triangles are the magnetotelluric monitoring ...

Yellowstone Caldera Chronicles is a weekly column written by scientists and collaborators of the Yellowstone Volcano Observatory. This week's contribution is from Ninfa Bennington, geophysicist ...