Basalt, the dominant volcanic rock along the Pacific Ocean's "Ring of Fire," is considered a melting product of the Earth's mantle. On the left is vesicular basalt, in which dissolved gases formed ...

Geoscientists have long thought that water -- along with shallow magma stored in Earth's crust -- drives volcanoes to erupt. Now, thanks to newly developed research tools, scientists have learned that ...

ITHACA, N.Y. – Geoscientists have long thought that water – along with shallow magma stored in Earth’s crust – drives volcanoes to erupt. Now, thanks to newly developed research tools at Cornell, ...

A volcanologist says the eruption on the island of La Palma is a unique window into the “personality” of basaltic volcanoes. Despite that devastation, only one death has been attributed to the ...

After 50 years of slumber, the volcano that forms the Cumbre Vieja on the island of La Palma in the Canary Islands in Spain roared back to life on Sept. 19, 2021. The last eruption on the island ...

An international team of researchers unearthed the previously unknown form of basalt after drilling through the Pacific ocean floor. Peridotite is composed mostly of greenish magnesium-iron-silicate ...

Freelance writer Amanda C. Kooser covers gadgets and tech news with a twist for CNET. When not wallowing in weird gear and iPad apps for cats, she can be found tinkering with her 1956 DeSoto. There ...

When you think of a Yellowstone eruption, you probably picture a massive, caldera-forming explosion. But new research is shifting that focus, revealing that the supervolcano's most recent known ...