During a field trip to the Lava Creek Tuff near Shell, Wyoming, scientists discovered evidence of two major volcanic eruptions. | Credit: USGS/Photo by Madison Myers. Scientists in Wyoming have ...

Scientists in Wyoming have discovered evidence of two mysterious volcanic eruptions that are older than the last caldera-forming supereruption at Yellowstone. The ash deposits were buried beneath ...

In 2020, scientists found the Huckleberry Ridge Tuff eruption — which ejected more than twice the amount of volcanic material as Lava Creek did — was also a phased event. Analysis of rocks at ...

It also covered much of the eastern Sierra Nevada range with a coarse volcanic tuff, or ash fall. Randolph-Flagg said researchers not only discovered the origin of the columns but also learned a ...