[californiadisasters] Northern California quake struck on long-dormant fault, USGS says

Northern California quake struck on long-dormant fault, USGS says

David Perlman | San Francisco Chronicle

Updated 5:50 am, Sunday, August 24, 2014

(08-24) 05:32 PDT AMERICAN CANYON -- The earthquake that rolled through the Bay Area and beyond early Sunday is believed to have been centered on a long-slumbering North Bay fault, the U.S. Geological Survey said.

The 6.0-magnitude quake struck at 3:20 a.m. on the Franklin Fault, which has been dormant for 1.6 million years, said USGS scientist David Oppenheimer. The fault is 2 miles west of the West Napa Fault and near the better-known Rogers Fault, he said.

With a "moderate to heavy" intensity, the quake struck 3 miles northwest of American Canyon at a depth of 6.2 miles and was felt widely through Northern California from Chico to Fresno, the USGS said.

Source: http://www.sfgate.com/news/article/Bay-Area-quake-struck-on-long-dormant-fault-USGS-5708819.php

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Posted by: Kim Noyes <kimnoyes@gmail.com>

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