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Intermittent lab earthquakes in dynamically weakening fault gouge - Nature
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Large and destructive earthquakes on mature faults in Earth's crust occur as slip in a layer of a fine granular material—fault gouge—produced by comminution during sliding1,2. A range of insights into the frictional resistance of faults—one of the main factors controlling earthquake nucleation, dynamic propagation and arrest, and hence the destructive ground shaking of earthquakes2,3—has been obtained in experiments with spatially uniform slip imposed in small samples2,4–21.
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