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Volcanoes and Volcanic Eruptions
Blue Flames and the largest highly acidic lake in the world at Kawah Ijen Volcano.
Mount Etna The most active volcano in Europe, continues an eruption that started in 2001.
Kilauea Eruption - photos of the 2018 eruption in the East Rift Zone of Kilauea Volcano.
Yellowstone Supervolcano Three USGS videos explain the history and eruptive activity.
St. Helens - 30 Years
Mount St. Helens - 30 Years Two USGS videos review the eruption and its impact.
Pele*s Hair and Pele*s Tears are two unusual types of lava found at Kilauea and other volcanoes.
Mount Vesuvius Geology, history, maps, facts and more about Vesuvius Volcano.
Mount Rainier A dangerous volcano with a history of deadly lahars and pyroclastic flows.
Largest Volcano - That title is shared by Tamu Massif, Mauna Kea and Ojos del Salado.
Volcanic Hazards Lava, pyroclastic density currents, lahars, gases and more.
The Next Hawaiian Island could be growing in the Pacific Ocean right now. Its name is Lo'ihi.
Igneous Rocks Descriptions and photos of common igneous rocks.
Teaching Plate Tectonics Students enjoy learning with easy-to-draw illustrations.
Stromboli Volcano Geology, history, maps, plate tectonics and more.
The most powerful eruption of the 20th century was blamed on the wrong volcano.
Mount Agung is an active and dangerous volcano on the island of Bali, Indonesia.
Olympus Mons The largest volcano in the solar system is on Mars.
Spectacular Eruption Photos A collection of volcanic eruption photos by USGS, NASA, NOAA.
Calderas are large volcanic craters formed by some of Earth\'s largest eruptions.
Mount Cleveland is an active volcano in the Aleutian Islands and a threat to air traffic.
Hawaiian Hot Spot
How did the Hawaiian Islands Form? The power of a moving plate over a stationary hot spot.
Kick 'em Jenny
Kick 'em Jenny is a submarine volcano and one of the most active on the Caribbean plate.
Types Of Eruptions
Types of Volcanic Eruptions A description of the most common eruption types.
Helenite is a man-made glass produced by fusing ash from the 1980 Mount St. Helens eruption.
Great Rift Valley
The East Africa Rift System Volcanics and tectonics of this active rift system.
Volcanic Ash Learn about volcanic ash, volcanic dust and their impacts.
Chaiten Volcano Geology, history and facts about this explosive volcano.
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.
Solar System Volcanoes Earth is not the only location of volcanic activity.
Santa Maria Volcano
Santa Maria A volcano in Guatemala. Produced one of the largest eruptions of the 1900s.
Volcanic Explosivity Rating volcanic eruptions based upon the volume of tephra ejected.
Redoubt Volcano Lightning Photographs of lightning in the Redoubt Volcano ash cloud.
Dallol Volcano is one of the strangest landscapes on earth - at 269 feet below sea level.
Pavlof Volcano - an active North American volcano and a threat to air traffic.
Geology Tools - Hammers, field bags, hand lenses, maps, hardness picks, gold pans.
Redoubt Facts, history, geology, hazards and plate tectonics of this Alaskan volcano.
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.