How do volcanologists determine the height of eruptive plumes from Yellowstone’s past explosive eruptions? Ironically, you ...

The unique geology on the eastern side of the Sierra was formed more than 700,000 years ago when a volcanic eruption created a rock plateau of pumice and ash known as Bishop Tuff. The ...

Towering pink cliffs. Twenty white sand beaches. Flying manta rays. Swimming with curious California sea lion pups.

San Francisco 49ers fullback Kyle Juszczyk is enjoying his offseason with his wife, Kristin. The couple has been traveling ...

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 chipped ...

Researchers have dated volcanic layers at six fossil-bearing sites in Turkey, including one known as Taşhan (shown). The ...

It's common knowledge that Yellowstone Park sits on top of an ancient supervolcano, but what happened last time it erupted?

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 ...

The target is a lithium clay deposit in volcanic tuff and tuffaceous sediments of the Humbolt Formation ... As a result, the basin has preserved multiple layers of lithium bearing volcanic ash, ...