Hawaii's Kilauea volcano put on a dramatic display Sunday night, shooting lava fountains over 1,000 feet into the air. The ...

"In the past, the distinct chemical compositions of lavas from Kīlauea and Maunaloa were thought to require completely separate magma pathways ... in their lava chemistry. "For example, during ...

Mount Etna in Sicily, Italy, is an example of a composite volcano ... vents in explosive eruptions. When magma erupts from a volcano it is called lava. This mixture of lava and gas flows out ...

Though immensely powerful, volcanoes are not always spewing hot lava around. Many are considered ... However, a team of scientists recently found magma chambers lurking beneath six volcanoes ...

The Yellowstone Plateau Volcanic Field has some of the largest rhyolite lava flows on Earth. Have you ever wondered what these flows look like in their interior, or how the ...

WASHINGTON — Scientists can't know precisely when a volcano is about to erupt, but they can sometimes pick up telltale signs. That happened two years ago with the world's largest active volcano.

the rock starts to get gooey — a reservoir of solid crystals with a mixture of lava melt and bubbles that form as the magma releases gases. New magma comes in from the bottom of the system.

The differences also give hints about how fast the magma flows, based on its mineral composition. For example, the magma nearest the surface of the Yellowstone Caldera contains a lot of silica, which ...