Scientists have found previously undocumented ash deposits buried beneath the Lava Creek Tuff in Wyoming — and at least one ...

Volcanic ash, blown by heavy winds ... the Nebraska cornfield is now the Ashfall Fossil Beds State Historical Park. Each field season, from May to October, visitors can watch as scientists ...

That area, which would receive at least 30 centimeters of ash from a major Mount Fuji eruption, is considered the most dangerous on a four-stage classification scale, according to the panel ...