Yellowstone National Park's geological history is one of the most intensely studied in North America. A new geologic unit ...

Learn about how volcanoes are formed and the ways they erupt Chiara Maria Petrone, Roberto Scandone, and Alex Whittaker On ...

In geology, even small layers can tell big stories. But figuring out the origins of such small layers can be a challenge, ...

Learn more about the new hydrothermal feature that appeared last summer in Yellowstone National Park, and how, even though it ...

Kenneth Sims and other research scientists recently discovered that mafic volcanism of Henrys Fork Caldera -- located in eastern Idaho and west of Yellowstone National Park -- occurred concurrently ...

Using artificial seismic waves, the team determined that a type of igneous rock called rhyolite makes up Yellowstone’s magma chamber.

Yellowstone volcano: USGS finds seven huge magma chambers below supervolcano The Yellowstone Caldera is often referred to as the Yellowstone Supervolcano due to its colossal size; it's one of the ...

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

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 ...

Here, they found basaltic melt —which is more fluid and contains less silica than rhyolitic melt—moving towards a rhyolitic magma pocket in the northeast.

By measuring the electrical conductivity of the silicate materials present in the magma’s melt (the liquid part of magma) below the Earth’s surface, researchers were able to map the areas throughout ...

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.