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The East Tennessee seismic zone in the southern Appalachians is an ~75-km-wide, 350-km-long region of seismicity that extends from NE Alabama and NW Georgia to NE of Knoxville, Tennessee. It is the second most active seismic zone east of the U.S. Rocky Mountains. Although the East Tennessee seismic zone has not recorded historical earthquakes of M > 5, researchers have used hypothetical and theoretical relationships to suggest that it may be capable of generating an “infrequent” M ~7.5 quake. To help clarify the late Pleistocene earthquake history and the earthquake potential of the East Tennessee seismic zone, we conducted an...

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