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The Hayward Fault is parallel to the San Andreas Fault, which lies offshore and through the San Francisco Peninsula. To the east of the Hayward Fault lies the Calaveras Fault. In 2007, the Hayward Fault was discovered to have merged with the Calaveras Fault east of San Jose at a depth of 6.4 kilometers (4.0 mi), with the potential of creating ...
The tunnel crosses the Hayward Fault at a nearly perpendicular angle 850 feet (260 m) from its western portal, and creep along the fault resulted in an offset of 13 inches (330 mm) by 2008. [6] The maximum credible earthquake (magnitude 7.0) predicted in studies would cause an offset of 7.5 feet (2.3 m).
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The temblor followed three earlier small earthquakes — a magnitude 2.7 that struck near the Hayward fault at 5:03 a.m., followed by a magnitude 3.3 at 11:52 a.m., then a 3.2 at 11:54 a.m.
The 1868 Hayward earthquake occurred in the San Francisco Bay Area, California, United States on October 21. With an estimated moment magnitude of 6.3–6.7 and a maximum Mercalli intensity of IX ( Violent ), it was the most recent large earthquake to occur on the Hayward Fault Zone .
The San Andreas Fault system (SAF) is a network of right-lateral strike-slip faults that form a portion of a complex and diffuse plate boundary. The faults span on and off shore along the California portion of the Pacific Rim, and in the area near San Francisco Bay, the extent of the various fault strands are limited to about 80 kilometers (50 mi) wide from east to west.
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The Lawson Adit is a horizontal mine tunnel, or adit, on the UC Berkeley campus, near the Hearst Mining Building, dug directly through the Hayward Fault. [1] Started in 1916, the adit is named after Andrew Lawson , one-time Dean of the College of Mining at UC Berkeley.