| 词条 | West Napa Fault |
| 释义 |
The West Napa Fault is a {{convert|57|km|mi|0|abbr=on}} long geologic fault in Napa County, in the North Bay region of the San Francisco Bay Area in northern California. It is believed to be the northern extension of the Calaveras Fault in the East Bay region. It has been mapped as a Late Pleistocene-Holocene active fault, and is considered to be predominantly a right lateral strike-slip fault.[1] The fault was discovered in 1976 by Gene Boudreau, a ground water drilling specialist from Sebastopol.[2] EarthquakesThe West Napa Fault is a likely source for the magnitude 6.0 South Napa earthquake that hit Napa County on August 24, 2014.[3] Seismologists were not able to determine the exact fault on which the quake occurred, because faults are usually identified by their expression on the surface.[4] The epicenter for the 2000 Yountville earthquake which occurred on September 3, 2000 is also near the West Napa Fault.[5] See also{{Portal|Geology|Cenozoic|San Francisco Bay Area}}
References1. ^{{cite web|last1=Wesling|first1=John R.|last2=Hanson|first2=Kathryn L.|title=Mapping of the West Napa Fault zone for input into the Northern California Quaternary Fault Database|url=https://earthquake.usgs.gov/research/external/reports/05HQAG0002.pdf|publisher=USGS|accessdate=25 August 2014|year=2008}} {{California Faults}}{{Faults}}{{Quaternary Footer}}2. ^{{Cite journal| last = Jensen| first = Peter| title = A lesser fault line blamed for Sunday's earthquake| journal = Napa Valley Register| publisher = Lee Enterprises, Inc.| location = Napa, CA| date = August 31, 2014| url = http://napavalleyregister.com/news/local/a-lesser-fault-line-blamed-for-sunday-s-earthquake/article_6323d869-381c-5298-bac8-fbb228b0e9b5.html| accessdate = August 31, 2014}} 3. ^{{cite news|last1=Perlman|first1=David|title=Little-known fault suspected in Northern California quake|url=http://www.sfgate.com/bayarea/article/Bay-Area-quake-struck-on-long-dormant-fault-USGS-5708819.php|accessdate=25 August 2014|work=San Francisco Chronicle|date=24 August 2014}} 4. ^{{cite web|title=Which fault is it?|url=http://seismo.berkeley.edu/blog/seismoblog.php/2014/08/24/which-fault-is-it|website=Seismo Blog|accessdate=27 August 2014|date=24 August 2014}} 5. ^{{Cite journal| last = Courtney| first = Kevin| title = Shake up call| journal = Napa Valley Register| publisher = Lee Enterprises, Inc.| location = Napa, CA| date = September 2, 2001| url = http://napavalleyregister.com/news/shake-up-call/article_7629d688-2300-5393-b944-fb7c0c23b658.html}} 8 : Seismic faults of California|Geology of Napa County, California|Napa, California|Strike-slip faults|Late Pleistocene|Pleistocene California|Quaternary California|Holocene North America |
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