Residents of Lazo, Atlasovo and Tayezhny were thrown into darkness after the volcano ejected ash into columns of around 11km ...

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

Volcanic ash: What it is, and why it matters Volcanic ash forms when viscous magma – molten rock from deep beneath Earth’s ...

Volcanic ash forms when viscous magma – molten rock from deep beneath Earth’s surface – erupts, exploding into shards of rock, mineral and glass carried in a near-supersonic stream of hot gas.

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

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 ...