Volcanoes inspire awe with spectacular eruptions and incandescent rivers of lava, but often their deadliest hazard is what ...

The ash deposits were buried beneath the Lava Creek Tuff ... Argon 40, a stable isotope of argon, builds up in volcanic rocks ...

Ash clouds are made of tiny particles that were lofted into the atmosphere from a volcanic eruption and can have a huge ...

New Zealand officials have raised the alert code for the offshore volcano Whakaari/White Island, which is emitting large ...

Volcanic ash: What it is, and why it matters Volcanic ash forms when viscous magma – molten rock from deep beneath Earth’s surface – erupts, exploding into shards of rock, mineral and glass ...