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

Kīlauea summit region shook for 5 hours Nov. 14 that year as magma made a path to the surface. The eruption began at 8:08 p.m ...

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

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 ...

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 ...

One of the world's most active volcanoes is keeping busy. The Kilauea Volcano in Hawaii, located on the state's Big Island, underwent two major eruptions in the last few weeks. Eruption episodes have ...

Recent activity indicates a projected eruption between Sunday and Wednesday, which would mark its 40th eruptive episode since ...

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 ...

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 ...