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 ...

The Lomagundi-Jatuli event, which occurred more than two billion years ago, followed the Great Oxygenation Event and was ...

Volcanic basalt rocks in the Black Rock Desert, Utah. If you drive south through central Utah on Interstate 15 and look west somewhere around Fillmore, you'll see smooth hills and fields of black rock ...

Basalt samples from China's Chang'e-6 mission helped researchers for the first time to precisely measure the age of volcanic eruptions on the far side of the Moon. After analyzing the sample, ...

The Palisades cliffs west of New York City rear up from the Hudson River like the spine of some ancient beast—and that impression is not far off. Their basalt backbone is a remnant of an immense lava ...