Volcanoes and Volcanic Eruptions

Solar System Volcanoes occur on Earth and moons of Jupiter, Saturn and Neptune.

Stromboli Volcano Geology, history, maps, plate tectonics and more.

Yellowstone Supervolcano Three USGS videos explain the history and eruptive activity.

Mount Etna The most active volcano in Europe, continues an eruption that started in 2001.

Mount St. Helens - 30 Years Two USGS videos review the eruption and its impact.

The most powerful eruption of the 20th century was initially blamed on the wrong volcano.

Mount Rainier A dangerous volcano with a history of deadly lahars and pyroclastic flows.

Igneous Rocks Descriptions and photos of common igneous rocks.

Mount Vesuvius Geology, history, maps, facts and more about Vesuvius Volcano.

Blue Flames and the largest highly acidic lake in the world at Kawah Ijen Volcano.

Largest Volcano - That title is shared by Tamu Massif, Mauna Kea and Ojos del Salado.

Mount Agung is an active and dangerous volcano on the island of Bali, Indonesia.

Volcanic Hazards Lava, pyroclastic density currents, lahars, gases and more.

Teaching Plate Tectonics Students enjoy learning with easy-to-draw illustrations.

Olympus Mons The largest volcano in the solar system is on Mars.

Helenite is a man-made glass produced by fusing ash from the 1980 Mount St. Helens eruption.

Chaiten Volcano Geology, history and facts about this explosive volcano.

The East Africa Rift System Volcanics and tectonics of this active rift system.

Calderas are large volcanic craters formed by some of Earth\'s largest eruptions.

Types of Volcanic Eruptions A description of the most common eruption types.

How did the Hawaiian Islands Form? The power of a moving plate over a stationary hot spot.

Spectacular Eruption Photos A collection of volcanic eruption photos by USGS, NASA, NOAA.

Geology Tools - Hammers, field bags, hand lenses, maps, hardness picks, gold pans.

Volcanic Ash Learn about volcanic ash, volcanic dust and their impacts.

Santa Maria A volcano in Guatemala. Produced one of the largest eruptions of the 1900s.

Pele*s Hair and Pele*s Tears are two unusual types of lava found at Kilauea and other volcanoes.

Volcanic Explosivity Rating volcanic eruptions based upon the volume of tephra ejected.

Redoubt Volcano Lightning Photographs of lightning in the Redoubt Volcano ash cloud.

What is a Maar? The second most common volcanic landscape feature on Earth.

Dallol Volcano is one of the strangest landscapes on earth - at 269 feet below sea level.

Mount Cleveland is an active volcano in the Aleutian Islands and a threat to air traffic.

Volcanoes on Venus? The surface of Venus is covered by lava flows and shield volcanoes.

The Next Hawaiian Island could be growing in the Pacific Ocean right now. Its name is Lo'ihi.

Lunar Rift System? Gravity maps revise the geologic history of the near side of the Moon.

Kilauea Eruption - photos of the 2018 eruption in the East Rift Zone of Kilauea Volcano.

Arenal Volcano Geology, history, hazards, plate tectonics and more.

Kick 'em Jenny is a submarine volcano and one of the most active on the Caribbean plate.

Pavlof Volcano - an active North American volcano and a threat to air traffic.

Redoubt Facts, history, geology, hazards and plate tectonics of this Alaskan volcano.

Galeras Volcano The most active volcano in Colombia. Article by Jessica Ball.