The Greenland ice cores included ash layers and microscopic volcanic glass—shards “roughly one-tenth the diameter of a human hair,” Hutchison says in a statement. Chemical analyses of these ...

The mystery location of a giant volcanic eruption that occurred almost 200 years ago has finally been solved thanks to ash traces preserved in ice cores. In 1831, famous German composer Felix ...

potentially as volcanic ash, billions of years ago. However, no volcanoes have been discovered at the site to date. "There are no known volcanoes at this site, which means the debris probably came ...