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Volcanoes and Volcanic Eruptions
Mount Etna The most active volcano in Europe, continues an eruption that started in 2001.
Solar System Volcanoes Earth is not the only location of volcanic activity.
Yellowstone Supervolcano Three USGS videos explain the history and eruptive activity.
Blue Flames and the largest highly acidic lake in the world at Kawah Ijen Volcano.
St. Helens - 30 Years
Mount St. Helens - 30 Years Two USGS videos review the eruption and its impact.
Mount Rainier A dangerous volcano with a history of deadly lahars and pyroclastic flows.
Mount Vesuvius Geology, history, maps, facts and more about Vesuvius Volcano.
Igneous Rocks Descriptions and photos of common igneous rocks.
Largest Volcano - That title is shared by Tamu Massif, Mauna Kea and Ojos del Salado.
Olympus Mons The largest volcano in the solar system is on Mars.
Kilauea Eruption - photos of the 2018 eruption in the East Rift Zone of Kilauea Volcano.
Volcanic Ash Learn about volcanic ash, volcanic dust and their impacts.
Volcanic Hazards Lava, pyroclastic density currents, lahars, gases and more.
The most powerful eruption of the 20th century was blamed on the wrong volcano.
Teaching Plate Tectonics Students enjoy learning with easy-to-draw illustrations.
Pele*s Hair and Pele*s Tears are two unusual types of lava found at Kilauea and other volcanoes.
Stromboli Volcano Geology, history, maps, plate tectonics and more.
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.
Calderas are large volcanic craters formed by some of Earth\'s largest eruptions.
Great Rift Valley
The East Africa Rift System Volcanics and tectonics of this active rift system.
Spectacular Eruption Photos A collection of volcanic eruption photos by USGS, NASA, NOAA.
Types Of Eruptions
Types of Volcanic Eruptions A description of the most common eruption types.
Geology Tools - Hammers, field bags, hand lenses, maps, hardness picks, gold pans.
Hawaiian Hot Spot
How did the Hawaiian Islands Form? The power of a moving plate over a stationary hot spot.
Redoubt Facts, history, geology, hazards and plate tectonics of this Alaskan volcano.
The Next Hawaiian Island could be growing in the Pacific Ocean right now. Its name is Lo'ihi.
Santa Maria Volcano
Santa Maria A volcano in Guatemala. Produced one of the largest eruptions of the 1900s.
Mount Cleveland is an active volcano in the Aleutian Islands and a threat to air traffic.
Pavlof Volcano - an active North American volcano and a threat to air traffic.
Redoubt Volcano Lightning Photographs of lightning in the Redoubt Volcano ash cloud.
Mount Agung is an active and dangerous volcano on the island of Bali, Indonesia.
Volcanic Explosivity Rating volcanic eruptions based upon the volume of tephra ejected.
Kick 'em Jenny
Kick 'em Jenny is a submarine volcano and one of the most active on the Caribbean plate.
Dallol Volcano is one of the strangest landscapes on earth - at 269 feet below sea level.
Lunar Rift System
Lunar Rift System? Gravity maps revise the geologic history of the near side of the Moon.
Arenal Volcano Geology, history, hazards, plate tectonics and more.
Galeras Volcano The most active volcano in Colombia. Article by Jessica Ball.
What is a Maar?
What is a Maar? The second most common volcanic landscape feature on Earth.
Volcanoes on Venus?
Volcanoes on Venus? The surface of Venus is covered by lava flows and shield volcanoes.