The earthquake problem in the western United States

Abstract

In the western and southwestern part of the United States are extensive areas where earthquakes happen frequently. Together these make Up nearly all of a great region which, at the very least, includes southwestern Oregon, California, western Nevada, and large parts of Arizona and New Mexico: The true limits of this seismic province (within the boundaries of the United States) probably would embrace a much larger territory still. And the province undoubtedly extends far to the south within the domain of Mexico.

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