MENLO PARK (CBS SF) — A magnitude 3.7 earthquake struck shortly before noon Saturday near the Contra Costa County town of Crockett, according to the U.S. Geological Survey.
It was centered about 1 mile north of Crockett at a depth of roughly 6 miles.
It was followed a few minutes later by an aftershock with a magnitude of 2.7.
COMPLETE QUAKE COVERAGE: CBS Earthquake Resource Center
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