Seismic Zone definitions

Seismic Zone

A region in which earthquakes are known to occur.
Found on http://earthquakescanada.nrcan.gc.ca/info-gen/glossa-eng.php

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seismic zone

seismic zone. ?An area of seismicity probably sharing a common cause. Example: "The New Madrid Seismic Zone."
Found on http://www.encyclo.co.uk/local/21456

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