Geologists say there is no evidence the Apolaki Caldera -- part of an extinct volcano located in the Philippine Sea -- could ...

Yellowstone Caldera Chronicles is a weekly column written by scientists and collaborators of the Yellowstone Volcano Observatory. This week's contribution is from Dan Dzurisin, geologist with the U.S.

Yellowstone Caldera Chronicles is a weekly column written by scientists and collaborators of the Yellowstone Volcano Observatory. This week's contribution is from Shaul Hurwitz, research hydrologist ...

A giant, undiscovered volcano may exist beneath the waters surrounding a group of small islands off Alaska’s Aleutian chain, according to the American Geophysical Union. John Lyons/USGS. A giant and ...

Deposits and scarp from the July 21, 2014 landslide in the Askja caldera, Iceland. Photo by Capture from RUV.is video. Most volcanoes are inherently unstable features. They are constructed of loose ...

Yellowstone Caldera Chronicles is a weekly column written by scientists and collaborators of the Yellowstone Volcano Observatory. This week's contribution is from R. Greg Vaughan, research scientist ...

It’s a landscape more familiar to herds of antelope and sagebrush than to mining engineers. Yet beneath the windswept ...

Boulder, Colo. - North America isn't the only continent that's experienced super-colossal volcanic eruptions in the recent geologic past. The massive explosion of the almost unknown Vilama Caldera in ...

Caption The 10-km wide caldera on Alaska's Unmak Island formed during the 43 BCE Okmok II eruption. This massive eruption caused among the most extreme Northern Hemisphere weather conditions of the ...