Volcanic arcs form by deep melting of rock mixtures

Beneath the ocean, massive tectonic plates collide and grind against one another, which drives one below the other. This powerful collision, called subduction, is responsible for forming volcanic arcs that are home to some ...

New model of Earth's interior reveals clues to hotspot volcanoes

Scientists at the University of California, Berkeley, have detected previously unknown channels of slow-moving seismic waves in Earth's upper mantle, a discovery that helps explain "hotspot volcanoes" that give birth to island ...

Bali's Agung volcano spews ash in fresh eruption

A volcano on the Indonesian holiday island of Bali erupted Sunday, belching ash high into the air and over nearby villages as officials warned tourists to keep clear of the area.

page 1 from 5