With Spurr rumbling near Anchorage, let's look at some of the largest eruptions in the most volcanically active state of the ...

In a remote corner of the U.S., active volcanoes wait patiently above the ridgelines, leaving residents on edge.

Kilauea is in a unique phase of activity in Halema‘uma‘u, with 12 episodes of dual lava fountains since Dec. 23, 2024.

Tephra is a general term for fragments ... Hundreds of dikes can invade the cone and inner core of a volcano, as they do in Nyiragongo, often along zones of structural weakness.

Kīlauea volcano at Hawai'i Volcanoes National Park is in a unique phase of activity in Halemaʻumaʻu, with 12 episodes of dual ...

Eruptions of steam, ash, and tephra continued until June ... Four types of volcanoes—shield, composite, cinder cone, and plug dome—can be found in Lassen Volcanic National Park, where they ...

Several past eruptions were characterized by similar lava fountaining episodes, including at the start of the Puʻuʻōʻō ...

Hazards associated with lava fountaining include the fallout materials (termed tephra), volcanic gas emissions ... and can build features such as cinder cones. Changes in wind direction and ...