Most volcanoes form at the boundaries of Earth's tectonic plates, which are huge slabs of crust and upper mantle that fit together like puzzle pieces. Think of these plates as massive rafts floating ...

Over millions of years, the Earth’s upper layers have performed a dance that has created mountains, volcanoes, continents, ridges and ocean trenches. Tectonic plates play a key role in this process.

The Ring of Fire spans approximately 40,000 kilometers and surrounds most of the Pacific Ocean, touching continents from Asia ...

A new study led by Jay Ague, professor of earth and planetary sciences at Yale, has provided crucial insights into the role of oxidation in volcanic formation. The team behind the study is an ...

The percentage of water in arc volcanoes, which form above subduction zones, may be far more than many previous studies have calculated. This increased amount of water has broad implications for ...

The blowout that was so evidently seen and heard . . . gave off three muffled cannon rounds like a bombardment, so loud that they could be heard for more than 30 leagues around the base. In the region ...

The Earth's lithosphere is the rigid outer shell of the planet and is broken into several tectonic plates. These plates are in constant motion over the semi-fluid asthenosphere underneath them. Much ...

Guatemala's Fuego volcano ad Hawaii's Kilauea volcano, which both erupted Sunday, are part of the Pacific Ring of Fire, an area of intense seismic and volcanic activity. The 40,000-kilometer ...

Bougainville Island in Papua New Guinea hosts three large volcanoes along its mountainous middle: Mount Balbi, Mount Bagana, and the Mount Takuan volcanic complex. Of these, only Mount Bagana is ...