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Results 41 - 42 of 42 for 'mt st helens' <<  1 2 3 4 5
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This Why Files short article discusses some new research on Yellowstone Caldera, a giant volcanic hotspot in Wyoming. Rock has been remelted inside the caldera. Using highly sensitive techniques to extract data from almost microscopic zircon crystals, two geologists at the University of Wisconsin-Madison found that over the past 2 million years, the giant Yellowstone volcano erupted at 700,000-year ... Full description.
Grade level: Intermediate (3-5), Middle (6-8), High (9-12), General public
Resource type: Map, Report
Subject: Geochemistry, Geologic time, Mineralogy or petrology, Natural hazards
 
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This page reports on the geologically volatile Long Valley, California area. The U.S. Geological Survey (USGS) continues to provide the public and civil authorities with current information on the volcano hazards at Long Valley and is prepared to give timely warnings of any impending eruption. In addition to photographs and a hazard response plan for earthquake and volcano hazards, the fact-sheet ... Full description.
Grade level: General public
Resource type: Map, Report
Subject: Geology, Natural hazards
 
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DLESE Community Collection (DCC)    Browse collection
Results 41 - 42 of 42 for 'mt st helens' <<  1 2 3 4 5