A study reveals the existence of pockets of magma beneath the volcanoes of the Cascade Range, with no signs of imminent eruptions.

Unlike old soldiers, old volcanoes seemingly don't even fade away, much less die, with researchers discovering magma chambers under cones previously classed as dormant after thousands of years of ...

Long-quiet volcanoes in the Cascades region of the Pacific Northwest are still underpinned by large reservoirs of magma, new research finds. The findings have implications for monitoring volcanoes ...

Yellowstone Caldera Chronicles is a weekly column written by scientists and collaborators of the Yellowstone Volcano Observatory. This week's contribution is from James Genero IV, EarthScope ...

New Cornell University led-research challenges the long-standing belief that active volcanoes have large magma bodies that ...

A recent study has revealed that dormant volcanoes in the Cascade Range still contain significant amounts of magma beneath their surface, challenging long-standing assumptions about volcanic activity.

It was the seventh volcano in four weeks for the French researcher and a team of volunteers from his hometown. In a scientific blitzkrieg through the Cascade Range, the 10 skilled mountaineers scaled ...

Mount Shasta, a steep-sided Cascade Range stratovolcano in Northern California, looms above Little Glass Mountain, a thick obsidian flow erupted from the Medicine Lake shield volcano about 1,000 years ...

EUGENE, Ore. - Mount St. Helens caught science a little by surprise. A volcano hadn't erupted in the contiguous United States (U.S. excluding Alaska and Hawaii) since California's Lassen Peak in early ...

BENTON COUNTY, Oregon — At 4,097 feet, Marys Peak is the highest point in Oregon’s Coast Range. On a clear day, it offers panoramic views of the Pacific Ocean to the west and Cascade volcanoes to the ...

Of the United States’ 161 active volcanoes, 57 are under-monitored, according to the U.S. Geological Survey, creating blind spots that pose a huge potential threat to public safety. In 2009, ...