Colossal volcanic eruptions like the kind that may have obliterated the dinosaurs more than 65 million years ago are caused ...

For centuries, glaciers have sat like frosty crowns atop slumbering volcanoes, keeping Earth’s fury tucked safely beneath ...

Giant, large-scale eruptions can have more serious impacts. One such event contributed to the demise of the dinosaurs 66 ...

Yellowstone National Park's geological history is one of the most intensely studied in North America. A new geologic unit ...

A volcanic eruption sank Aenaria nearly 2,000 years ago. Now, underwater tours and ongoing excavations are bringing Ischia's ...

Climate change could potentially awaken hundreds of dormant volcanoes worldwide, according to recent models studying ...

But each volcano is different. Some burst to life in violent eruptions, like the 1980 eruption of Mount St. Helens, and others burp rivers of lava in what’s known as an effusive eruption, like ...

Glacial retreat caused a wave of volcanic activity in southern Chile as the last Ice Age came to an end, according to new ...

In geology, even small layers can tell big stories. But figuring out the origins of such small layers can be a challenge, ...

The devastating natural disaster killed 57 people and was the most destructive volcanic eruption in US history. It leveled trees, destroyed bridges, and caused more than $1 billion in damage.

California has seven active volcanoes, each with a unique eruption history, categorized by type and threat level. The USGS monitors these volcanoes, providing information to authorities and the ...

The 1980 eruption cycle made Mount St. Helens one of the most famous volcanoes in the Cascades. But it is far from the only volcano in the range.