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West Napa Fault
The West Napa Fault is a 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. The fault was discovered in 1976 by Gene Boudreau, a ground water drilling specialist from Sebastopol. Earthquakes The West Napa Fault is a likely source for the magnitude 6.0 South Napa earthquake that hit Napa County on August 24, 2014. 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. The epicenter for the 2000 Yountville earthquake which occurred on September 3, 2000 is also near the West Napa Fault. See also *Green Valley Fault — ''northern extension of the East Bay Concord Fault The Concord Faul ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
2014 South Napa Earthquake Epicenter
Fourteen or 14 may refer to: * 14 (number), the natural number following 13 and preceding 15 * one of the years 14 BC, AD 14, 1914, 2014 Music * 14th (band), a British electronic music duo * ''14'' (David Garrett album), 2013 *''14'', an unreleased album by Charli XCX * "14" (song), 2007, from ''Courage'' by Paula Cole Other uses * ''Fourteen'' (film), a 2019 American film directed by Dan Sallitt * ''Fourteen'' (play), a 1919 play by Alice Gerstenberg * ''Fourteen'' (manga), a 1990 manga series by Kazuo Umezu * ''14'' (novel), a 2013 science fiction novel by Peter Clines * '' The 14'', a 1973 British drama film directed by David Hemmings * Fourteen, West Virginia, United States, an unincorporated community * Lot Fourteen, redevelopment site in Adelaide, South Australia, previously occupied by the Royal Adelaide Hospital * "The Fourteen", a nickname for NASA Astronaut Group 3 * Fourteen Words, a phrase used by white supremacists and Nazis See also * 1/4 (other) * ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Napa Valley Register
The ''Napa Valley Register'' is a daily newspaper located in Napa, California. The paper began publication on August 10, 1863. By 1864, the newspaper had dropped “Valley” from its name, becoming simply the ''Napa Register'', until returning to the original name over a century later. Covering a community more known for its wheat crop than wine grapes, the early ''Register'' would be unrecognizable to modern readers. A forum for gossip, tall-tales, opinion, moral instruction, aphorisms, propaganda, entertainment and, sporadically, hard news, the ''Register'' was one of the top two newspapers of early Napa. The ''Register'' moved to daily publication in 1872 and George M. Francis became sole owner of the Register in 1878, upon the death of his business partner. Francis was succeeded in ownership by his son George H. Francis in 1932. The paper remained with Francis and various partners until 1958, when it was sold to Scripps League, a small family chain. The current editor is Da ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Pleistocene California
The Pleistocene ( , often referred to as the ''Ice age'') is the geological epoch that lasted from about 2,580,000 to 11,700 years ago, spanning the Earth's most recent period of repeated glaciations. Before a change was finally confirmed in 2009 by the International Union of Geological Sciences, the cutoff of the Pleistocene and the preceding Pliocene was regarded as being 1.806 million years Before Present (BP). Publications from earlier years may use either definition of the period. The end of the Pleistocene corresponds with the end of the last glacial period and also with the end of the Paleolithic age used in archaeology. The name is a combination of Ancient Greek grc, label=none, πλεῖστος, pleīstos, most and grc, label=none, καινός, kainós (latinized as ), 'new'. At the end of the preceding Pliocene, the previously isolated North and South American continents were joined by the Isthmus of Panama, causing a faunal interchange between the two reg ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Strike-slip Faults
In geology, a fault is a planar fracture or discontinuity in a volume of rock across which there has been significant displacement as a result of rock-mass movements. Large faults within Earth's crust result from the action of plate tectonic forces, with the largest forming the boundaries between the plates, such as the megathrust faults of subduction zones or transform faults. Energy release associated with rapid movement on active faults is the cause of most earthquakes. Faults may also displace slowly, by aseismic creep. A ''fault plane'' is the plane that represents the fracture surface of a fault. A ''fault trace'' or ''fault line'' is a place where the fault can be seen or mapped on the surface. A fault trace is also the line commonly plotted on geologic maps to represent a fault. A ''fault zone'' is a cluster of parallel faults. However, the term is also used for the zone of crushed rock along a single fault. Prolonged motion along closely spaced faults can blur the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Napa, California
Napa is the largest city and county seat of Napa County and a principal city of Wine Country in Northern California. Located in the North Bay region of the Bay Area, the city had a population of 77,480 as of the end of 2021. Napa is a major tourist destination in California, known for its wineries, restaurants, and arts culture. History The name "Napa" was probably derived from the name given to a southern Nappan village whose native people shared the area with elk, deer, grizzlies and cougars for many centuries, according to Napa historian Kami Santiago. Mexican era At the time of the first recorded exploration into Napa Valley in 1823, the majority of the inhabitants consisted of Native American Indians. Padre José Altimira, founder of Mission San Francisco Solano in Sonoma, led the expedition. Spanish priests converted some natives; the rest were attacked and dispersed by Mexican soldiers. The first now American immigrants began arriving in area in the 1830s. Post-C ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Geology Of Napa County, California
Geology () is a branch of natural science concerned with Earth and other astronomical objects, the features or rocks of which it is composed, and the processes by which they change over time. Modern geology significantly overlaps all other Earth sciences, including hydrology, and so is treated as one major aspect of integrated Earth system science and planetary science. Geology describes the structure of the Earth on and beneath its surface, and the processes that have shaped that structure. It also provides tools to determine the relative and absolute ages of rocks found in a given location, and also to describe the histories of those rocks. By combining these tools, geologists are able to chronicle the geological history of the Earth as a whole, and also to demonstrate the age of the Earth. Geology provides the primary evidence for plate tectonics, the evolutionary history of life, and the Earth's past climates. Geologists broadly study the properties and processes of Earth ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Seismic Faults Of California
Seismology (; from Ancient Greek σεισμός (''seismós'') meaning "earthquake" and -λογία (''-logía'') meaning "study of") is the scientific study of earthquakes and the propagation of elastic waves through the Earth or through other planet-like bodies. It also includes studies of earthquake environmental effects such as tsunamis as well as diverse seismic sources such as volcanic, tectonic, glacial, fluvial, oceanic, atmospheric, and artificial processes such as explosions. A related field that uses geology to infer information regarding past earthquakes is paleoseismology. A recording of Earth motion as a function of time is called a seismogram. A seismologist is a scientist who does research in seismology. History Scholarly interest in earthquakes can be traced back to antiquity. Early speculations on the natural causes of earthquakes were included in the writings of Thales of Miletus (c. 585 BCE), Anaximenes of Miletus (c. 550 BCE), Aristotle (c. 340 BCE), and Zhan ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Concord Fault
The Concord Fault is a geologic fault in the San Francisco Bay Area. The reason it is called that is because it is located under the city of Concord. It is connected to, and considered to be part of, the same fault zone as the Green Valley fault, which lies just a few miles to the north across the Suisun Bay. The fault is situated at the east of West Napa Fault and extends from Mount Diablo to the Carquinez Strait, an approximately 11 mile long distance. Like most other faults in this area, the Concord Fault is a strike-slip fault, moving approximately 2.7 to 3.6 millimeters a year. Seismic activity Currently, it is considered to be under a high stress level and therefore has a higher chance of a major earthquake happening. There have been earthquakes on this fault before. On October 23, 1955, a 5.4 magnitude quake caused about 1 million dollars in damage (about 8.7 million today) and one death. The last large earthquake linked to this fault occurred over 400 years ago. Dange ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Green Valley Fault
Green is the color between cyan and yellow on the visible spectrum. It is evoked by light which has a dominant wavelength of roughly 495570 nm. In subtractive color systems, used in painting and color printing, it is created by a combination of yellow and cyan; in the RGB color model, used on television and computer screens, it is one of the additive primary colors, along with red and blue, which are mixed in different combinations to create all other colors. By far the largest contributor to green in nature is chlorophyll, the chemical by which plants photosynthesize and convert sunlight into chemical energy. Many creatures have adapted to their green environments by taking on a green hue themselves as camouflage. Several minerals have a green color, including the emerald, which is colored green by its chromium content. During post-classical and early modern Europe, green was the color commonly associated with wealth, merchants, bankers, and the gentry, while red w ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
2000 Yountville Earthquake
The 2000 Yountville earthquake occurred with a moment magnitude of 5 on a previously unmapped fault, about south southwest of Yountville, California in the Mayacamas Mountain Range under Mount Veeder and about south northwest of Napa, California. It occurred at 01:36 PDT (08:36 UTC) on September 3. Earthquake The earthquake occurred at a depth of 9.4 km on a northwest-oriented fault and with a right-lateral strike-slip motion. The epicenter of the earthquake was near the West Napa Fault, a previously unmarked fault. Damage Several unreinforced masonry buildings in downtown Napa suffered exterior damage as a result of the earthquake. Sixteen buildings were red tagged following the event and 168 were yellow tagged. Although the magnitude of the primary event was considered moderate, shaking was intensified in the city of Napa and surrounding area due to the sedimentary soil on the floor of the valley. The earthquake caused an interruption of power to approximately 10,00 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
2014 South Napa Earthquake
The 2014 South Napa earthquake occurred in the North San Francisco Bay Area on August 24 at . At 6.0 on the moment magnitude scale and with a maximum Mercalli intensity of VIII (''Severe''), the event was the largest in the San Francisco Bay Area since the 1989 Loma Prieta earthquake. The epicenter of the earthquake was located to the south of Napa and to the northwest of American Canyon on the West Napa Fault. Total damage in the southern Napa Valley and Vallejo areas was in the range of $362 million to $1 billion, with one person killed and 200 injured. Other aspects of the event included an experimental earthquake warning system that alerted seismologists several seconds before the damaging shear waves arrived, temporary changes in springs and wells, and the potential for postseismic fault creep. Tectonic setting The San Andreas Fault System is an active plate boundary comprising right-lateral strike-slip faults that runs nearly the length of California. This network o ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Sebastopol, California
Sebastopol ( ) is a city in Sonoma County, in California with a recorded population of 7,521, per the 2020 U.S. Census. Sebastopol was once primarily a plum and apple-growing region. Today, wine grapes are the predominant agriculture crop, and nearly all lands once used for orchards are now vineyards. The creation of The Barlow, a $23.5 million strip mall on a floodplain at the edge of town, converting old agriculture warehouses into a trendy marketplace for fine dining, tasting rooms, and art, has made Sebastopol a popular Wine Country destination. Famous horticulturist Luther Burbank had gardens in this region. The city hosts an annual Apple Blossom Festival in April and is home to the Sebastopol Documentary Film Festival. History The area's first known inhabitants were the native Coast Miwok and Pomo peoples. The town currently sits atop multiple village sites. The town of Sebastopol formed in the 1850s with a U.S. Post Office and as a small trade center for the farmers o ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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