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Volcanoes
Vents in the surface of the Earth through which magma and associated gases erupt; also, the forms or structures, usually conical, that are produced by the erupted material. [Glossary of Geology, 4th ed.]
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Results 31 - 40 of 51 listed by similarity [list alphabetically]
Mauna Loa current activity [More info]
Current activity of Mauna Loa Volcano with news, GPS data, electronic tiltmeter data, and current seismicity plus links to long term monitoring.
Mauna Loa, Earth's largest volcano [More info]
Current activity, hazards, and history of eruptions of Mauna Loa.
Monitoring data of the Long Valley caldera and Mono-Inyo Craters volcanic chain, California [More info]
Describes the monitoring effort and provides real-time data of the current restless activity of the caldera, including earthquakes, ground deformation, and release of volcanic gas and plus link to volcano monitoring techniques.
PDF Mount Rainier - Living Safely With a Volcano in Your Backyard [More info]
One of our Nation's most dangerous volcanoes, Mount Rainier has been the source of countless eruptions and volcanic mudflows, and many people live in the areas that will be affected by it.
PDF Mount St. Helens lidar [More info]
Poster available in two sizes for downloading and printing.
PDF Mount St. Helens, 1980 to now--what's going on? [More info]
Summarizes the eruptions of this spectacular volcano and the consequences for the surrounding landscape, explains how volcanoes like this form, and how we monitor their activity to mitigate hazards they pose.
Photo gallery of the Long Valley area, California [More info]
Selection of photographic images of the Long Valley area that illustrate the consequences of the past geologic history of the Sierra Nevada, Long Valley Caldera, the Mono-Inyo Craters volcanic chain, glaciation, and faulting.
Potential hazards from future volcanic eruptions in the Long Valley -- Mono Lake Area, California [More info]
An introduction to the volcano hazards in the Long Valley area based on the past geologic history of the Long Valley Caldera and the Mono-Inyo Craters volcanic chain.
Selected volcano information [More info]
Selected books, maps, videos, and other materials produced by the USGS Volcano Hazards Program. Many products highlighted here are intended for general audiences.
PDF Sutter Buttes-the lone volcano in California's Great Valley [More info]
Explains history and structure of this unusual geologic feature.
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