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 ...

green volcanic tuff, and white volcanic lapilli. According to geologists the Prairie Creek Diatreme, the volcano which formed the Crater of Diamonds, originally erupted when much of southern ...

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 ...

The petroglyphs can be found on volcanic tuff formations formed over 760,000 years ago when a large eruption released hot ash that settled over the region. The Paiute-Shoshone Indians later ...