Volcanic activity bubbling away beneath the Yellowstone National Park in the US appears to be on the move. New research shows that the reservoirs of magma that fuel the supervolcano's wild ...

New mapping of the magma lying beneath Yellowstone National Park sheds light on where volcanic activity is shifting, and the likelihood of a full-scale eruption.

This is why in places where cooling basalt to produce rhyolite might be happening, we find it as pockets of magma underground (usually stumbled across while drilling, like what happened in Iceland ...

Lava is the form of magma that erupts to the surface, such as via a volcano. Here is how hot it is.

These chambers are connected to shallower underground pools of rhyolitic magma, which is thicker and requires more pressure to erupt, but tends to produce more explosive eruptions.

Rhyolitic magma, on the other hand, is much thicker and more resistant to flow. Underneath Yellowstone, basaltic magma heats the surrounding rock to help create this kind of magma in the Earth’s ...

Without an underlying heat source, rhyolitic magma in western Yellowstone caldera will continue to cool, and rhyolite eruptions in this region will eventually cease.

Rhyolite is a thick, silica rich magma that flows relatively slowly and can lead to explosive eruptions. In contrast, it is basalt—a more runny and iron/magnesium rich magma type—that wells up ...

New age data for rhyolite lava flows erupted in the Yellowstone caldera suggest the eruptions occurred in tight clusters, changing the way geologists think about lava flow events and volcanic ...

Scientists investigating the Yellowstone supervolcano have discovered movement deep in the crater, sparking fears the sleeping giant could erupt.

How exactly the magma is stored there — and therefore, how it would erupt — has been a mystery. Now, scientists have used advanced techniques to find the answers to some of these questions.