Studying tree rings helped scientists pinpoint when Mount Rainier last sent a lahar down its steep slopes, which could help ...

Tephrochronology is a specialised stratigraphic method that utilises volcanic ash (tephra) layers to synchronise, date and correlate geological, palaeoenvironmental and archaeological sequences. By ...

Klyuchevskoy volcano in eastern Russia began erupting shortly after a powerful 8.8 magnitude earthquake and several aftershocks shook the same area. "A descent of hot lava is observed on the western ...

This photo shows the exposure of the Mount Jackson Rhyolite Series vitrophyre at Gibbon River. Boulders of weathered, lichen-covered rock show how easy it is to overlook these new units. (Photo by Liv ...

Thundereggs look like regular rocks from the outside, but contain intricate and colorful mineral patterns inside — often made ...

An earlier version of this story was published in 2024. It looks like just another hill in Sussex County, but you wouldn’t have wanted to have been standing there 420 million years ago. That’s about ...

NASA released satellite images showing the activity of Ethiopia’s dormant Hayli Gubbi volcano, which marked its first recorded eruption on November 23. The Hayli Gubbi volcano in northern Ethiopia ...

Our Earth is around 4.5 billion years old. Way back in its earliest years, vast oceans dominated. There were frequent volcanic eruptions and, because there was no free oxygen in the atmosphere, there ...

Ever wonder what it would look like to be engulfed in a lava fountain as you choke on volcanic ash and burn to death? No? Well, you’re wondering now, aren’t you? Don’t worry, what you’re about to see ...

It looks like just another hill in Sussex County, but you wouldn’t have wanted to have been standing there 420 million years ago. That’s about when the Beemerville Volcano erupted in Wantage, give or ...