|Types Of Eruptions
Types of Volcanic Eruptions A description of the most common eruption types.
The Deepest Volcano Erupting 4000 feet below the surface of the Pacific.
Mount Etna The most active volcano in Europe, continues an eruption that started in 2001.
Mount Vesuvius Geology, history, maps, facts and more about Vesuvius 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.
Volcanic Explosivity Rating volcanic eruptions based upon the volume of tephra ejected.
Yellowstone Supervolcano Three USGS videos explain the history and eruptive activity.
Stromboli Volcano Geology, history, maps, plate tectonics and more.
Volcanic Hazards Lava, pyroclastic density currents, lahars, gases and more.
Igneous Rocks Descriptions and photos of common igneous rocks.
The most powerful eruption of the 20th century was blamed on the wrong volcano.
Chaiten Volcano Geology, history and facts about this explosive volcano.
Volcanic Ash Learn about volcanic ash, volcanic dust and their impacts.
Teaching Plate Tectonics Students enjoy learning with easy-to-draw illustrations.
||Santa Maria Volcano
Santa Maria A volcano in Guatemala. Produced one of the largest eruptions of the 1900\'s.
Calderas are large volcanic craters formed by some of Earth\'s largest eruptions.
Arenal Volcano Geology, history, hazards, plate tectonics and more.
Galeras Volcano Colombia\'s most active volcano. Article by Jessica Ball.
Dallol Volcano is one of the strangest landscapes on earth - at 269 feet below sea level.
Pavlof Volcano is one of the most active volcanoes in North America and a threat to air traffic.
Olympus Mons The largest volcano in the solar system is on Mars.
Redoubt Facts, history, geology, hazards and plate tectonics of this Alaskan volcano.
Tamu Massif might be the largest volcano but Mauna Kea and Ojos del Salado are rivals.
|Great Rift Valley
The East Africa Rift System Volcanics and tectonics of this active rift system.
||Hawaiian Hot Spot
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.
Helenite is a man-made glass produced by fusing ash from the 1980 Mount St. Helens eruption.
Mount Cleveland is an active volcano in the Aleutian Islands and a threat to air traffic.
Tao-Rusyr Caldera was the site of a massive volcanic eruption about 9000 years ago.
Redoubt Volcano Lightning Photographs of lightning in the Redoubt Volcano ash cloud.
||Volcanoes on Venus?
Volcanoes on Venus? The surface of Venus is covered by lava flows and shield volcanoes.
|Lunar Rift System
Lunar Rift System? Gravity maps revise the geologic history of the near side of the Moon.
||What is a Maar?
What is a Maar? The second most common volcanic landscape feature on Earth.
||CO2 Rich Lavas
Carbonatite Lava Flows These carbon dioxide rich lavas are as fluid as motor oil.
Solar System Volcanoes Earth is not the only location of volcanic activity.