Earthquakes

Earthquakes are the result of plate tectonics, or shifting plates in the crust of Earth, and quakes occur when the frictional stress of gliding plate boundaries builds and causes failure at a fault line. In an earthquake, elastic strain energy is released and waves radiate, shaking the ground. Scientists can predict where major temblors might occur in a general sense, but research does not yet allow forecasts for specific locations or accurate predictions of timing. Major earthquakes, some generating tsunamis, have leveled entire cities and affected whole countries. Relatively minor earthquakes can also be induced, or caused by human activity, including extraction of minerals from Earth and the collapse of large buildings.
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Mysterious Colorado Rock Formation May Be Result of 'Natural Fracking'
Tava Sandstone
September 26th, 2014
An ancient, catastrophic flood or earthquake may explain how a bewildering rock formation in Colorado's Rocky Mountains formed, a new study finds.
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Weird Earth Movement After Japan Earthquake Finally Explained
Japan seafloor crevasse
September 18th, 2014
Unusual westward drifts recorded off Japan's coast following the 2011 Tohoku earthquake provide a new picture of how the Earth adjusts after giant earthquakes.
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Earthquake Unleashes Avalanche Over Sprawling Glacier (Photo)
Earthquake-Induced Avalanche
September 12th, 2014
An earthquake that rattled remote parts of Alaska and northwestern Canada in July triggered an avalanche that spilled mounds of snow down a steep mountainside.
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Strong 6.2-Magnitude Earthquake Strikes Alaska
Sept. 25 Alaska earthquake
September 25th, 2014
An earthquake of magnitude 6.2 shook southern Alaska Thursday (Sept. 25), according to the U.S. Geological Survey.
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Southwest's Earthquake Spike Linked to Injection Wells
fracking
September 15th, 2014
A dramatic increase in earthquakes in New Mexico and Colorado was triggered by wastewater injection wells.
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Well Water May Contain Earthquake Warning Signs
iceland earthquakes
September 21st, 2014
Geologists say well water spikes in sodium and hydrogen warned of mounting strain before two Iceland earthquakes. The results may someday lead to earthquake prediction.
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Calm Before the Quake? Turkey May Be Due for the Big One
Turkey earthquake fault
September 15th, 2014
A powerful earthquake of magnitude 7 or greater may be building up along a now-quiet fault on the coast of Istanbul, a new study finds.
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How the Napa Quake Deformed Earth (Satellite Photo)
Radar image of Napa Valley
September 3rd, 2014
The 6.0-magnitude earthquake that rocked California's Napa Valley last month not only injured dozens of people and caused millions of dollars in damage, but it also warped the surface of Earth.
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