Over the Sierra crest — about 150 miles to the east of Manteca, Oakdale, and Turlock — is one of the world’s largest active ...

There are many different kinds of volcanoes, ranging from the Hawaiian type, which produces gentle, effusive eruptions that tourists can observe from mere steps away, to the andesitic variety ...

There are two main types of volcano - composite and shield. The two types of volcano form in different places and have very different characteristics. Ash released from shield volcanoes often ...

The Yellowstone Caldera, a volcanic caldera and supervolcano located ... Previous attempts to accurately determine the type and quantity of material beneath the Yellowstone caldera have also ...

Bárðarbunga is a stratovolcano — a type of cone-shaped volcano ... One possibility is that eruptions will occur outside of ...

Lithium that pooled in a volcanic caldera in the western United States had no way out, thanks to a lack of rivers.