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USGS map showing faults that span the Pacific–North America plate boundary. The Hayward Fault Zone is a right-lateral strike-slip geologic fault zone capable of generating destructive earthquakes. The fault was first named in the Lawson Report of the 1906 San Francisco Earthquake in recognition of its involvement in the earthquake of 1868. [1]
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 active faults that may cause ground shaking in the county include the San Andreas, Calaveras and Hayward faults, according to the county. ... Map of Stanislaus County earthquake shaking zones.
The Hayward fault zone and Rodgers Creek fault are treated as a single fault; the San Andreas fault is treated as two sections. A complete listing of known Quaternary faults can be found at the U.S. Geological Survey's Quaternary Fault and Fold Database (QFFDB).
To the east of the Hayward-Rodgers Creek fault, the Calaveras fault extends 123 km (76 mi), splaying from the San Andreas fault near Hollister and terminating at Danville at its northern end. [1] It runs east of the San Andreas, diverging from it in the vicinity of Hollister, California , and is responsible for the formation of the Calaveras ...
For example, a fault outside of Kalamazoo was revealed after a 4.2-magnitude earthquake in 2015 — the state's largest since a 4.6-magnitude quake along the same fault in Coldwater in 1947.
The Hayward fault zone and Rodgers Creek fault are treated as a single fault; the San Andreas fault is treated as two sections. 3. UCEF3 fault sections, with links to "participation" maps for each section (outlined in black), showing the rate (in color) that section participates in ruptures with other sections.
A fault off the Pacific coast could devastate Washington, Oregon and Northern California with a major earthquake and tsunami. Researchers mapped it comprehensively for the first time.