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High-pressure water triggers tremors.(earthquake research)(Brief Article)

Tiny droplets of water may seem too inconsequential to break rock, but three Yale University geologists now say that water trapped far below Earth's surface can set off earthquakes.

Deep underground, heat and pressure expel water from the crystals of certain minerals, transforming one structure into another. "The classical view of metamorphism is that fluid is released very slowly and continuously in teeny, tiny amounts over millions of years," says Jay J. Ague, a coauthor of the report appearing in the Nov. 15 Geophysical Research Letters. "What we show is that once one of these [transformations] gets going, a lot of water can be released over decades or hundred-year ...

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