Yellowstone Lava Dome Filling Up Quickly. Associated Press. Published November 9, ... It's not unusual for ancient volcano sites like Yellowstone and Long Valley, Calif., ...

YELLOWSTONE NATIONAL PARK, Wyo. - A geologist says some parts of the continually shifting, collapsed volcano at the center of the park are swelling unusually fast.

These lava flows and domes have filled in much of Yellowstone caldera and are one reason you don’t see an obvious crater when you visit Yellowstone National Park.

New data for rhyolite lava flows in Yellowstone caldera suggest the eruptions occurred in tight clusters. These results change the way geologists think about lava flow and volcanic hazards.

Similar flows have fed the slow-growing lava dome at Mount St. Helens in the years after that volcano's major eruption, but Yellowstone's lava flows occur on a much grander scale.

Smaller eruptions, which are far more likely than a super-eruption, would likely produce lava flows or domes, which, although ...

Small lava eruptions in the Yellowstone volcano caldera are “more dramatic” than was thought and occur in clusters — making then, while not catastrophic, “still a big deal”.

The last caldera-forming eruption at Yellowstone "was much ... Previous research has shown that the Lava Creek super-eruption was not out of the blue; deposits at the Sour Creek Dome region east ...

In the latest "Caldera Chronicle"—a weekly column by scientists published on the USGS Yellowstone Volcano Observatory website—researchers looked at the Lava Creek Tuff eruption 631,000 years ago.