Visual observations have been a backbone of volcano research more than 2,000 years and remain fundamental to understanding ...

A Martian volcano once thought to be the result of a single eruption turns out to have a much more complex past. Orbital imaging and mineral data show it developed through multiple eruptive phases, ...

Add Yahoo as a preferred source to see more of our stories on Google. An aerial view of the Crater Lake Caldera in Oregon. Obviously, visible lava spewing from a volcano’s caldera, like Hawai’i’s ...

Volcano Watch” is a weekly article and activity update written by U.S. Geological Survey Hawaiian Volcano Observatory scientists and affiliates. Today’s article is by Hawaiian Volcano Observatory ...

When tens of thousands of earthquakes shook Santorini, the cause wasn’t just shifting tectonic plates—it was rising magma. Scientists tracked about 300 million cubic meters of molten rock pushing up ...

Taftan volcano in southeastern Iran rose 3.5 inches over 10 months, signaling that it is waking up after 700,000 years of dormancy.

A massive, iron-rich structure sitting at the base of Earth’s mantle beneath the Hawaiian Islands may be doing more than scientists previously understood to fuel the archipelago’s volcanic activity.

Dozens of people have died, hundreds are missing and many more homes were destroyed after separate volcanic eruptions in Hawaii and Guatemala that made headlines worldwide in recent months. And ...

In volcanoes, fluid inclusions are dominantly composed of CO 2. At magmatic temperatures (1200˚ C or 2192˚ F), the density of the CO 2 strongly depends on pressure, which is influenced by the depth of ...

Mount Rainier - one of many volcanoes found in the Cascade Range - is reflecting in the Reflection Lakes in Mount Rainier National Park in Washington State, USA. A seismic survey challenges the ...