Midwest Quake
In your report (Feb. 1), “Great Lakes Area Jolted by 5.0 Earthquake,” the chief of the Ohio division of the U.S. Geological Survey said the cause of the quake was something of a mystery because there are no known faults near the surface of the Earth in this region.
Based on the Geological Survey’s analysis it should be simply defined as a no-fault earthquake.
ROBERT G. KONKLE
Ventura
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