105-578: Ace Hotel is a chain of hotels headquartered in Los Angeles and New York City . Founded in 1999 in Seattle, it operates hotels Internationally in 4 continents, with locations in; Brooklyn, New York City ; Palm Springs, California ; Seattle , Washington; Kyoto , Japan; Toronto, Canada; and Sydney, Australia with hotels soon to open in Athens, Greece and Fukuoka, Japan. In 1999, the first Ace Hotel
210-605: A gross metropolitan product of over $ 1.0 trillion, making it the city with the third-largest GDP in the world, after New York and Tokyo . Los Angeles hosted the Summer Olympics in 1932 and 1984 , and will also host in 2028 . Despite a business exodus from Downtown Los Angeles since the COVID-19 pandemic , the city's urban core is evolving as a cultural center with the world's largest showcase of architecture designed by Frank Gehry . On September 4, 1781,
315-673: A metropolitan area of 12.8 million people (2023). Greater Los Angeles , which includes the Los Angeles and Riverside–San Bernardino metropolitan areas, is a sprawling metropolis of over 18.3 million residents. The majority of the city proper lies in a basin in Southern California adjacent to the Pacific Ocean in the west and extending partly through the Santa Monica Mountains and north into
420-539: A Late Miocene depositional age and is divided into four members. The La Vida Member is a micaceous, platy siltstone with subordinate amounts of thin-bedded feldspathic sandstone. The next member is the Soquel, which is a thick bedded to massive micaceous sandstone. Locally abundant siltstone, conglomerate, and intraformational breccia can also be seen in this member. Above the Soquel lies the Yorba Member. This member
525-478: A diverse economy with a broad range of industries. Despite a steep exodus of film and television production since the COVID-19 pandemic , Los Angeles is still one of the largest hubs of American film production , the world's largest by revenue; the city is an important site in the history of film . It also has one of the busiest container ports in the Americas. In 2018, the Los Angeles metropolitan area had
630-614: A group of 44 settlers known as " Los Pobladores " founded the pueblo (town) they called El Pueblo de Nuestra Señora la Reina de los Ángeles , 'The Town of Our Lady the Queen of the Angels';. The original name of the settlement is disputed; the Guinness Book of World Records rendered it as "El Pueblo de Nuestra Señora la Reina de los Ángeles del Río Porciúncula "; other sources have shortened or alternate versions of
735-452: A higher probability of experiencing seismic activity. The region experiences earthquakes that are mostly mild (magnitude ≤2.25). However moderate earthquakes (magnitude 4.9 to 6.4) have been reported. Earthquakes of moderate magnitude are very infrequent. This fault zone is the most notable feature within the basin that is a single strand with local (fault) splays. The fault zone is also marked by low hills, scarps, and ten anticlinal folds in
840-566: A new Ace Hotel every "one to two years", before his untimely death at age 47 on November 16, 2013. In 2014, a downtown Los Angeles location of the Ace Hotel opened in a former theatre, followed by Ace Hotel locations in Pittsburgh in 2015, New Orleans in 2016, and Chicago in 2017. In 2020, an Ace Hotel location opened in Kyoto, Japan that was designed by Kengo Kuma . In September 2020, it
945-546: A non-marine environment and then transgressed to a deep ocean system. The oldest basement units of this basin are of both sedimentary and igneous origin. The sedimentary unit was metamorphosed as a result of slippage of the Newport–Inglewood fault and is known as the Catalina Schist . The Catalina Schist can be found on the southwestern edge of the basin and is predominantly a chlorite-quartz schist. Closer to
1050-425: A profit; the other, according to an analysis of contemporary newspaper reports, was the 1932 Summer Olympics , also held in Los Angeles. Racial tensions erupted on April 29, 1992, with the acquittal by a Simi Valley jury of four Los Angeles Police Department (LAPD) officers captured on videotape beating Rodney King , culminating in large-scale riots . In 1994, the magnitude 6.7 Northridge earthquake shook
1155-545: A right-stepping en echelon pattern. It is located in the southwest portion of the basin and is a strike-slip margin. There are several oil fields that run parallel to this fault. This fault lies on the eastern border of the basin and mergers with the Elsinore Fault in the canyon of the Santa Ana River, one of the upper branches of the fault. This fault is a reverse right-oblique fault. It is most known for
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#17327798480921260-622: A series of battles, culminating with the signing of the Treaty of Cahuenga on January 13, 1847. The Mexican Cession was formalized in the Treaty of Guadalupe Hidalgo in 1848, which ceded Los Angeles and the rest of Alta California to the United States. Railroads arrived with the completion of the transcontinental Southern Pacific line from New Orleans to Los Angeles in 1876 and the Santa Fe Railroad in 1885. Petroleum
1365-507: A single type, where industrial uses were prohibited. The proscriptions included barns, lumber yards, and any industrial land use employing machine-powered equipment. These laws were enforced against industrial properties after the fact. These prohibitions were in addition to existing activities that were already regulated as nuisances. These included explosives warehousing, gas works, oil drilling, slaughterhouses, and tanneries . Los Angeles City Council also designated seven industrial zones within
1470-607: A trend in California to give places Spanish, or Spanish-sounding, names and pronunciations. In 1908, librarian Charles Fletcher Lummis , who argued for the name's pronunciation with a hard g ( / ɡ / ), reported that there were at least 12 pronunciation variants. In the early 1900s, the Los Angeles Times advocated for pronouncing it Loce AHNG-hayl-ais ( / l oʊ s ˈ ɑː ŋ h eɪ l eɪ s / ), approximating Spanish [los ˈaŋxeles] , by printing
1575-438: Is Mount San Antonio , locally known as Mount Baldy, which reaches 10,064 feet (3,068 m). Further afield, the highest point in southern California is San Gorgonio Mountain , 81 miles (130 km) east of downtown Los Angeles, with a height of 11,503 feet (3,506 m). The Los Angeles River , which is largely seasonal, is the primary drainage channel . It was straightened and lined in 51 miles (82 km) of concrete by
1680-778: Is a coastal lowland area, whose floor is marked by elongate low ridges and groups of hills that is located on the edge of the Pacific plate . The Los Angeles Basin, along with the Santa Barbara Channel , the Ventura Basin , the San Fernando Valley , and the San Gabriel Basin , lies within the greater Southern California region. The majority of the jurisdictional land area of the city of Los Angeles physically lies within this basin. On
1785-651: Is a common problem in this population. Although Serieys et al. 2014 find selection of immune genetics at several loci they do not demonstrate that this produces a real difference which helps the bobcats to survive future mange outbreaks . Los Angeles is subject to earthquakes because of its location on the Pacific Ring of Fire . The geologic instability has produced numerous faults , which cause approximately 10,000 earthquakes annually in Southern California, though most of them are too small to be felt. The strike-slip San Andreas Fault system, which sits at
1890-522: Is a largely unconsolidated unit and is composed mostly of gravel and floodplain sediments. The sediments that mark the top of the basin can be found in modern streams/rivers and at the base of the foothills. The history of this basin begins with the subduction of Pacific plate underneath the North American plate in the beginning of the Mesozoic. During this subduction event, two smaller plates,
1995-444: Is a mid-Miocene fault block that revealed a northwest trending ridge of Paleocene age rocks. This structural feature is important because it revealed many oil traps and orientation of the beds indicate the age of subsidence in this portion of the basin. This particular anticline is the most notable subsurface feature within the basin. Deformation events such as erosion of the uplifted crustal blocks, initiation of various faults, and
2100-702: Is a sandy siltstone that is interbedded with a fine-grained sandstone. The Sycamore Canyon Member contains lenses of conglomerate, conglomeratic sandstone, and sandstone. Sandy siltstone and fine-grained sandstones are interbedded with the aforementioned rock types. The Monterey Formation is characterized by abnormally high silica content compared to most clastic rocks. There are also silica-cemented rocks known as porcelanite and porcelanite shale . While this formation has distinguishable beds, there are many shale, sandstone, and mudstone beds that have normal amounts of silica. This sequence of this formation indicates an off-shore marine environment. The Fernando Formation
2205-452: Is complicated by rugged terrain, which has necessitated having different grids for each of the valleys that Los Angeles covers. Major streets are designed to move large volumes of traffic through many parts of the city, many of which are extremely long; Sepulveda Boulevard is 43 miles (69 km) long, while Foothill Boulevard is over 60 miles (97 km) long, reaching as far east as San Bernardino. Drivers in Los Angeles suffer from one of
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#17327798480922310-575: Is credited for bringing in such artists as Kaws and Shepard Fairey to decorate the walls of various Rudy's and Ace Hotel locations. In 2006, the group opened a second hotel in Portland, Oregon followed by properties in Palm Springs, California and New York City in 2009. In 2013, an Ace Hotel opened in the Shoreditch neighborhood of London , where Calderwood had defined a goal of opening
2415-437: Is divided into many different districts and neighborhoods, some of which had been separately incorporated cities that eventually merged with Los Angeles. These neighborhoods were developed piecemeal, and are well-defined enough that the city has signage which marks nearly all of them. The city's street patterns generally follow a grid plan , with uniform block lengths and occasional roads that cut across blocks. However, this
2520-502: Is expected to continue to drop in the coming years because of aggressive steps to reduce it, which include electric and hybrid cars, improvements in mass transit , and other measures. The number of Stage 1 smog alerts in Los Angeles has declined from over 100 per year in the 1970s to almost zero in the new millennium. Despite improvement, the 2006 and 2007 annual reports of the American Lung Association ranked
2625-544: Is notable for its great structural relief and complexity in relation to its geologic youth and small size for its prolific oil production. Yerkes et al. identify five major stages of the basin's evolution, which began in the Upper Cretaceous and ended in the Pleistocene . This basin can be classified as an irregular pull-apart basin accompanied by rotational tectonics during the post- early Miocene . Before
2730-417: Is remarkable due to the relatively small size and youth of the basin. The basin currently has about 40 active oil fields that collectively have 4,000 operating wells. In 1904, there were over 1,150 wells in the city of Los Angeles alone. Tight spacing and continued pumping of the wells resulted in most of the wells to dry up. Most recent data indicates that 255 million barrels of oil were produced in 2013. This
2835-488: Is rich in native plant species partly because of its diversity of habitats, including beaches, wetlands , and mountains. The most prevalent plant communities are coastal sage scrub , chaparral shrubland, and riparian woodland . Native plants include: the California poppy , matilija poppy , toyon , Ceanothus , Chamise , Coast Live Oak , sycamore , willow and Giant Wildrye . Many of these native species, such as
2940-521: Is split into two sub-facies known as the Pico and Repetto Members . These members represent a distinct change in the depositional environment and are of Pleistocene age. The Repetto is the older of the two members and is composed of interbedded fine to coarse grained siltstone, mudstone, and sandstone. The Pico Member is mostly made of massive siltstones and sandstones interbedded with minor silty-sandstones. Holocene alluvium and Quaternary sediments
3045-411: Is the most populous city in the U.S. state of California . With an estimated 3,820,914 residents within the city limits as of 2023 , it is the second-most populous city in the United States, behind only New York City ; it is also the commercial, financial and cultural center of Southern California . Los Angeles has an ethnically and culturally diverse population, and is the principal city of
3150-528: Is the Whittier and Newport–Inglewood faults that have dictated the seismic behavior within the basin. The Los Angeles basin is still active tectonically and the region continues to experience earthquakes as a result. Due to the number of faults and fault splays, seismic activity is not concentrated in one particular area. The cities that are overlain by the Newport–Inglewood and Whittier fault zones have
3255-413: The 1916 New York City Zoning Ordinance did. Second, the residential zones did not distinguish types of housing; they treated apartments, hotels, and detached-single-family housing equally. In 1910, Hollywood merged into Los Angeles, with 10 movie companies already operating in the city at the time. By 1921, more than 80 percent of the world's film industry was concentrated in L.A. The money generated by
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3360-805: The Army Corps of Engineers to act as a flood control channel. The river begins in the Canoga Park district of the city, flows east from the San Fernando Valley along the north edge of the Santa Monica Mountains, and turns south through the city center, flowing to its mouth in the Port of Long Beach at the Pacific Ocean. The smaller Ballona Creek flows into the Santa Monica Bay at Playa del Rey . Los Angeles
3465-547: The Hillside Stranglers murder cases in 1977–1978. In early 1984, the city surpassed Chicago in population, thus becoming the second largest city in the United States. In 1984, the city hosted the Summer Olympic Games for the second time . Despite being boycotted by 14 Communist countries , the 1984 Olympics became more financially successful than any previous, and the second Olympics to turn
3570-487: The Los Angeles sunflower , have become so rare as to be considered endangered. Mexican Fan Palms , Canary Island Palms , Queen Palms , Date Palms , and California Fan Palms are common in the Los Angeles area, although only the last is native to California, though still not native to the City of Los Angeles. Los Angeles has a number of official flora: The city has an urban population of bobcats ( Lynx rufus ). Mange
3675-497: The San Fernando Valley , with the city bordering the San Gabriel Valley to its east. It covers about 469 square miles (1,210 km ), and is the county seat of Los Angeles County , which is the most populous county in the United States with an estimated 9.86 million residents as of 2022 . It is the third-most visited city in the U.S. with over 2.7 million visitors as of 2023. The area that became Los Angeles
3780-505: The respelling under its masthead for several years. This did not find favor. Since the 1930s, / l ɔː s ˈ æ n dʒ əl ə s / has been most common. In 1934, the United States Board on Geographic Names decreed that this pronunciation be used by the federal government. This was also endorsed in 1952 by a "jury" appointed by Mayor Fletcher Bowron to devise an official pronunciation. Common pronunciations in
3885-507: The 20th century, Los Angeles substantially reduced the amount of housing that could be built by drastically downzoning the city. In 1960, the city had a total zoned capacity for approximately 10 million people. By 1990, that capacity had fallen to 4.5 million as a result of policy decisions to ban housing through zoning. Racial tensions led to the Watts riots in 1965, resulting in 34 deaths and over 1,000 injuries. In 1969, California became
3990-458: The Angels'. The present-day city has the largest Roman Catholic archdiocese in the United States. Two-thirds of the Mexican or ( New Spain ) settlers were mestizo or mulatto , a mixture of African, indigenous and European ancestry. The settlement remained a small ranch town for decades, but by 1820, the population had increased to about 650 residents. Today, the pueblo is commemorated in
4095-629: The Los Angeles area include the 1933 Long Beach , 1971 San Fernando , 1987 Whittier Narrows , and the 1994 Northridge events. All but a few are of low intensity and are not felt. The USGS has released the UCERF California earthquake forecast , which models earthquake occurrence in California. Parts of the city are also vulnerable to tsunamis ; harbor areas were damaged by waves from Aleutian Islands earthquake in 1946, Valdivia earthquake in 1960, Alaska earthquake in 1964, Chile earthquake in 2010 and Japan earthquake in 2011. The city
4200-502: The Los Angeles area was the headquarters of six of the country's major aircraft manufacturers ( Douglas Aircraft Company , Hughes Aircraft , Lockheed , North American Aviation , Northrop Corporation , and Vultee ). During the war, more aircraft were produced in one year than in all the pre-war years since the Wright brothers flew the first airplane in 1903, combined. Manufacturing in Los Angeles skyrocketed, and as William S. Knudsen , of
4305-548: The Los Angeles region. In 1846, during the wider Mexican-American war , marines from the United States occupied the pueblo. This resulted in the siege of Los Angeles where 150 Mexican militias fought the occupiers which eventually surrendered. Mexican rule ended during following the American Conquest of California , part of the larger Mexican-American War . Americans took control from the Californios after
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4410-685: The Los Angeles/Long Beach port complex, Los Angeles suffers from air pollution in the form of smog. The Los Angeles Basin and the San Fernando Valley are susceptible to atmospheric inversion , which holds in the exhausts from road vehicles, airplanes, locomotives, shipping, manufacturing, and other sources. The smog season lasts from approximately May to October. While other large cities rely on rain to clear smog, Los Angeles gets only 15 inches (380 mm) of rain each year: pollution accumulates over many consecutive days. Issues of air quality in Los Angeles and other major cities led to
4515-591: The Monterey and Juan de Fuca plates, also began to subduct underneath the North American plate. Around 20Ma, the Monterey plate attached to and followed the motion of the Pacific plate. Later, subduction of the Pacific-Monterey ceased and the plate margin was converted to a transform boundary. The North America/Pacific-Monterey transform boundary began to move north and created crustal extension. This rifting
4620-523: The National Defense Advisory Commission put it, "We won because we smothered the enemy in an avalanche of production, the like of which he had never seen, nor dreamed possible." After the end of World War II Los Angeles grew more rapidly than ever, sprawling into the San Fernando Valley . The expansion of the state owned Interstate Highway System during the 1950s and 1960s helped propel suburban growth and signaled
4725-561: The Newport–Inglewood fault zone, garnet -bearing schists and metagabbros occur. The Santa Monica Slate can be observed in the northwestern block of the basin. The eastern complex is characterized by Santiago Peak Volcanics. This rock unit contains andesitic breccias , flow, agglomerates and tuffs . The Sespe Formation is the first to appear above the great unconformity and is marked by interbedded mudstones, sandstones and pebbly sandstones. This bed sequence indicates an alluvial fan, meandering stream or braided stream origin. Upward from
4830-696: The San Fernando Valley. Other hilly parts of Los Angeles include the Mt. Washington area north of Downtown, eastern parts such as Boyle Heights , the Crenshaw district around the Baldwin Hills , and the San Pedro district. Surrounding the city are much higher mountains. Immediately to the north lie the San Gabriel Mountains , which is a popular recreation area for Angelenos. Its high point
4935-543: The Sespe Formation toward the Vaqueros , the grains become finer and the beds become thinner; indicating a transition to a shallow marine environment. The Vaqueros Formation is marked by two sandstone, siltstone and shale units. There are also characteristic mollusk fossils that indicate the area was dominately shallow marine. The Topanga Group is the next major formation in the stratigraphic sequence and infills
5040-527: The Southern Californian coast, is subject to a late spring/early summer weather phenomenon called " June Gloom ". This involves overcast or foggy skies in the morning that yield to sun by early afternoon. More recently, statewide droughts in California have further strained the city's water security . Downtown Los Angeles averages 14.67 in (373 mm) of precipitation annually, mainly occurring between November and March, generally in
5145-711: The Spanish founded the Pueblo de Los Ángeles . Iyáangẚ has also been translated as "the valley of smoke". Maritime explorer Juan Rodríguez Cabrillo claimed the area of southern California for the Spanish Empire in 1542, while on an official military exploring expedition, as he was moving northward along the Pacific coast from earlier colonizing bases of New Spain in Central and South America. Gaspar de Portolà and Franciscan missionary Juan Crespí reached
5250-528: The Topanga Group appear to reflect the continuation of a shift in shoreline that can be seen in both the Sespe and Vaqueros formations. Eruptions from one or more of volcanic centers locally and temporarily interrupted sedimentation. The Puente Formation is a deep-marine formation that is characterized by pro-delta sediments and an overlapping fan system. This unit lies above the Topanga Group giving it
5355-483: The United Kingdom include / l ɒ s ˈ æ n dʒ ɪ l iː z , - l ɪ z , - l ɪ s / loss AN -jil-eez, -iz, -iss . Phonetician Jack Windsor Lewis described the most common one, / l ɒ s ˈ æ n dʒ ɪ l iː z / , as a spelling pronunciation based on analogy to Greek words ending in -es , "reflecting a time when the classics were familiar if Spanish
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#17327798480925460-487: The Whittier, Brea-Olinda, Sansinena, oil fields. There is an anticline that runs parallel to the Whittier fault that is evidence for compressional deformation during the late Miocene to early Pliocene. Thinning and pinch-out of the Pliocene sandstones are evidence for uplift during this same time period. The Anaheim nose is a subsurface feature that was discovered by geophysical surveys and exploratory drilling in 1930. It
5565-416: The active setting, there are over 9,100 m of strata within the basin. The dynamic setting was also responsible for the heterogeneous deposition of each formation. It is common for rock units of the same depositional event to have different names in different locations within the basin. This may be a result of large variation in clast size as with the upper Pliocene Pico Formation in the northwestern part of
5670-582: The basin and the Upper Fernando Formation in the southwest part of the basin. The Los Angeles Basin contains what is known as the " Great Unconformity " which has been interpreted as a large-scale erosional event in the basement rock unit. This unconformity is used to correlate strata throughout the basin. The record of the Cenozoic activity begins above this unconformity. The stratigraphic record for this basin indicates that it began as
5775-524: The basin continued to experience sediment deposition through the Pleistocene from flooding and erosional debris from the surrounding mountains and Puente Hills. This infill was responsible for the final retreat of the shoreline from the basin. Deposition in the Holocene is characterized by non marine gravel, sand and silt. This phase also includes the late-stage compressional deformation responsible for
5880-589: The basin lies on the boundary of the Transverse and Peninsular Ranges, this basin experiences both compressional and strike slip tectonics. During the early Pliocene, also identified as the "Basin Disruption" phase, deformation and folding occurred as a result of fault movement and a slight rotation event. While movement along the San Andreas Fault is responsible for the placement of the basin, it
5985-401: The basin. The thickness of these oil sands range from hundreds to thousands of feet. Anticlines and faulted anticlines are the structural features that are also responsible for trapping oil. The first reported oil-producing well was discovered in 1892 on the land that is presently beneath Dodger Stadium . This basin was responsible for half of the states oil production until the (90's?). This
6090-769: The birthplace of the Internet, as the first ARPANET transmission was sent from the University of California, Los Angeles (UCLA) to the Stanford Research Institute in Menlo Park . In 1973, Tom Bradley was elected as the city's first African American mayor, serving for five terms until retiring in 1993. Other events in the city during the 1970s included the Symbionese Liberation Army 's South Central standoff in 1974 and
6195-632: The boundary between the Pacific Plate and the North American Plate , passes through the Los Angeles metropolitan area. The segment of the fault passing through Southern California experiences a major earthquake roughly every 110 to 140 years, and seismologists have warned about the next "big one", as the last major earthquake was the 1857 Fort Tejon earthquake . The Los Angeles basin and metropolitan area are also at risk from blind thrust earthquakes . Major earthquakes that have hit
6300-485: The boundary of a Mediterranean climate ( Köppen : Csb on the coast, Csa otherwise). Daytime temperatures are generally temperate all year round. In winter, they average around 68 °F (20 °C). Autumn months tend to be hot, with major heat waves a common occurrence in September and October, while the spring months tend to be cooler and experience more precipitation. Los Angeles has plenty of sunshine throughout
6405-414: The central block. Structurally, there is a synclinal trough. The northeastern block contains fine to coarse grained clastic marine rocks of Cenozoic age. Locally, middle Miocene volcanics can be seen as well as Eocene to Miocene aged non-marine sedimentary rocks. There is also an anticline in the northeastern block. Homogeneous evolution of this basin did not occur due to dynamic tectonic activity. Despite
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#17327798480926510-404: The city as the most polluted in the country with short-term particle pollution and year-round particle pollution. In 2008, the city was ranked the second most polluted and again had the highest year-round particulate pollution. The city met its goal of providing 20 percent of the city's power from renewable sources in 2010. The American Lung Association's 2013 survey ranks the metro area as having
6615-537: The city is 342 miles (550 km). Los Angeles is both flat and hilly. The highest point in the city proper is Mount Lukens at 5,074 ft (1,547 m), located in the foothills of the San Gabriel Mountains at the north extent of the Crescenta Valley . The eastern end of the Santa Monica Mountains stretches from Downtown to the Pacific Ocean and separates the Los Angeles Basin from
6720-450: The city, causing $ 12.5 billion in damage and 72 deaths. The century ended with the Rampart scandal , one of the most extensive documented cases of police misconduct in American history. In 2002, Mayor James Hahn led the campaign against secession, resulting in voters defeating efforts by the San Fernando Valley and Hollywood to secede from the city. In 2022 , Karen Bass became the city's first female mayor , making Los Angeles
6825-420: The city. However, between 1908 and 1915, the Los Angeles City Council created various exceptions to the broad proscriptions that applied to these three residential zones, and as a consequence, some industrial uses emerged within them. There are two differences between the 1908 Residence District Ordinance and later zoning laws in the United States. First, the 1908 laws did not establish a comprehensive zoning map as
6930-522: The continued growth of the city. Because of clauses in the city's charter that prevented the City of Los Angeles from selling or providing water from the aqueduct to any area outside its borders, many adjacent cities and communities felt compelled to join Los Angeles. Los Angeles created the first municipal zoning ordinance in the United States. On September 14, 1908, the Los Angeles City Council promulgated residential and industrial land use zones. The new ordinance established three residential zones of
7035-414: The demise of the city's privately owned electrified rail system , once the world's largest. As a consequence of World War II, suburban growth, and population density, many amusement parks were built and operated in this area. An example is Beverly Park , which was located at the corner of Beverly Boulevard and La Cienega before being closed and substituted by the Beverly Center . In the second half of
7140-571: The development of the submarine channel led to the anticline's formation. Fold initiation began in the late-Miocene to early Pliocene period of deformation. There are many other anticlines within the basin and isopach data suggests that the formation of these folds occurred mostly during the Pliocene. The La Brea Tar Pits are pools of stagnant asphaltum that have been found on the basin's surface. These "pools" are important because hundreds of thousands of late Pleistocene bones and plants have been found. These pits allowed scientists to better understand
7245-402: The difference between the average daily low and the average daily high is over 30 °F (17 °C). The average annual temperature of the sea is 63 °F (17 °C), from 58 °F (14 °C) in January to 68 °F (20 °C) in August. Hours of sunshine total more than 3,000 per year, from an average of 7 hours of sunshine per day in December to an average of 12 in July. Due to
7350-408: The ecosystem at that particular point in the geologic past. Accumulations of oil and gas occur almost wholly within strata of the younger sequence and in areas that are within or adjacent to the coastal belt. The Puente formation has proved to be the most notable reservoir for petroleum in the basin. The primary reason for the high abundance of oil is because the oil sands are well saturated within
7455-411: The end of this phase, the shoreline began to retreat and deposition continued. After the deposition of the pre-Turonian units, there was a large emergence and erosion that can be observed as a major unconformity at the base of the middle Miocene units. Emergence did not occur at the same rate or in all sections of the basin. During this time, the basin was covered by a marine embayment. Rivers sourced in
7560-407: The form of moderate rain showers, but sometimes as heavy rainfall during winter storms. Rainfall is usually higher in the hills and coastal slopes of the mountains because of orographic uplift. Summer days are usually rainless. Rarely, an incursion of moist air from the south or east can bring brief thunderstorms in late summer, especially to the mountains. The coast gets slightly less rainfall, while
7665-495: The formation of the basin, the area that encompasses the Los Angeles basin began above ground. A rapid transgression and regression of the shoreline moved the area to a shallow marine environment. Tectonic instability coupled with volcanic activity in rapidly subsiding areas during the Middle Miocene set the stage for the modern basin. The basin formed in a submarine environment and was later brought back above sea level when
7770-468: The formation of the hydrocarbon traps. Four major faults are present in the region and divide the basin in the central, northwest, southwest, and northeast structural blocks. These blocks not only denote their geographic location, but they indicate the strata present and major structural features. The southwestern block was uplifted prior to the middle Miocene and is composed mostly of marine strata and contains two major anticlines. This block also contains
7875-417: The highland areas (to the north and east) moved down the submarine slopes and infilled the basin floor. Subsidence and sedimentation most likely began in the southern portion basin. Subsidence and Deposition occurred simultaneously, without interruption, until the late Pliocene. Until the rate of deposition gradually overtook the rate of subsidence, and the sea level began to fall. Towards the end of this phase,
7980-463: The highlands brought large amounts of detritus to the northeastern edge of the basin. During this period, the Topanga formation was also being deposited. The present form and structural relief of the basin was largely established during this phase of accelerated subsidence and deposition which occurred during the late Miocene and continued through the early Pleistocene. Clastic sedimentary rocks from
8085-482: The historic district of Los Angeles Pueblo Plaza and Olvera Street , the oldest part of Los Angeles. New Spain achieved its independence from the Spanish Empire in 1821, and the pueblo now existed within the new Mexican Republic . During Mexican rule, Governor Pío Pico made Los Angeles the regional capital of Alta California . By this time, the new republic introduced more secularization acts within
8190-501: The industry kept the city insulated from much of the economic loss suffered by the rest of the country during the Great Depression . By 1930, the population surpassed one million. In 1932, the city hosted the Summer Olympics . During World War II Los Angeles was a major center of wartime manufacturing, such as shipbuilding and aircraft. Calship built hundreds of Liberty Ships and Victory Ships on Terminal Island, and
8295-466: The inland and mountain areas get considerably more. Years of average rainfall are rare. The usual pattern is a year-to-year variability, with a short string of dry years of 5–10 in (130–250 mm) rainfall, followed by one or two wet years with more than 20 in (510 mm). Wet years are usually associated with warm water El Niño conditions in the Pacific, dry years with cooler water La Niña episodes. A series of rainy days can bring floods to
8400-575: The largest U.S. city to have ever had a woman as mayor. Los Angeles will host the 2028 Summer Olympics and Paralympic Games , making Los Angeles the third city to host the Olympics three times. The city of Los Angeles covers a total area of 502.7 square miles (1,302 km ), comprising 468.7 square miles (1,214 km ) of land and 34.0 square miles (88 km ) of water. The city extends for 44 miles (71 km) from north to south and for 29 miles (47 km) from east to west. The perimeter of
8505-514: The longer name. The local English pronunciation of the name of the city has varied over time. A 1953 article in the journal of the American Name Society asserts that the pronunciation / l ɔː s ˈ æ n dʒ əl ə s / lawss AN -jəl-əs was established following the 1850 incorporation of the city and that since the 1880s the pronunciation / l oʊ s ˈ æ ŋ ɡ əl ə s / lohss ANG -gəl-əs emerged from
8610-490: The lowest is 28 °F (−2 °C), on January 4, 1949. Within the City of Los Angeles, the highest temperature ever officially recorded is 121 °F (49 °C), on September 6, 2020, at the weather station at Pierce College in the San Fernando Valley neighborhood of Woodland Hills . During autumn and winter, Santa Ana winds sometimes bring much warmer and drier conditions to Los Angeles, and raise wildfire risk. Owing to geography, heavy reliance on automobiles, and
8715-505: The lowlands and mudslides to the hills, especially after wildfires have denuded the slopes. Both freezing temperatures and snowfall are extremely rare in the city basin and along the coast, with the last occurrence of a 32 °F (0 °C) reading at the downtown station being January 29, 1979; freezing temperatures occur nearly every year in valley locations while the mountains within city limits typically receive snowfall every winter. The greatest snowfall recorded in downtown Los Angeles
8820-444: The margins of the basin began to rise above sea level. During the early Pleistocene, deposition began to outpace subsidence in the depressed parts of the basin and the shoreline began to move southward. This phase also had movement along the Newport–Inglewood fault zone that resulted in the initiation of the modern basin. This movement caused the southwestern block to be uplifted relative to the central basin block. The central part of
8925-546: The mountainous terrain of the surrounding region, the Los Angeles area contains a large number of distinct microclimates , causing extreme variations in temperature in close physical proximity to each other. For example, the average July maximum temperature at the Santa Monica Pier is 70 °F (21 °C) whereas it is 95 °F (35 °C) in Canoga Park, 15 miles (24 km) away. The city, like much of
9030-681: The nation's worst smog, and fourth in both short-term and year-round pollution amounts. Los Angeles Basin The Los Angeles Basin is a sedimentary basin located in Southern California , in a region known as the Peninsular Ranges . The basin is also connected to an anomalous group of east–west trending chains of mountains collectively known as the Transverse Ranges . The present basin
9135-670: The north, northeast, and east, the lowland basin is bound by the Santa Monica Mountains and Puente, Elysian, and Repetto hills. To the southeast, the basin is bordered by the Santa Ana Mountains and the San Joaquin Hills . The western boundary of the basin is marked by the Continental Borderland and is part of the onshore portion. The California borderland is characterized by northwest trending offshore ridges and basins. The Los Angeles Basin
9240-514: The passage of early national environmental legislation, including the Clean Air Act . When the act was passed, California was unable to create a State Implementation Plan that would enable it to meet the new air quality standards, largely because of the level of pollution in Los Angeles generated by older vehicles. More recently, the state of California has led the nation in working to limit pollution by mandating low-emission vehicles . Smog
9345-486: The present site of Los Angeles on August 2, 1769. In 1771, Franciscan friar Junípero Serra directed the building of the Mission San Gabriel Arcángel , the first mission in the area. On September 4, 1781, a group of 44 settlers known as " Los Pobladores " founded the pueblo (town) they called El Pueblo de Nuestra Señora la Reina de los Ángeles , 'The Town of Our Lady the Queen of
9450-491: The rate of subsidence slowed. There is much discussion in the literature about the geologic time boundaries when each basin forming event took place. While exact ages may not be clear, Yerkes et al. (1965) provided a general timeline to categorize the sequence of depositional events in the LA Basin's evolution and they are as follows: During pre- Turonian , metamorphosed sedimentary and volcanic rocks are present that serve as
9555-536: The rest of California were purchased as part of the Treaty of Guadalupe Hidalgo and became part of the United States. Los Angeles was incorporated as a municipality on April 4, 1850, five months before California achieved statehood . The discovery of oil in the 1890s brought rapid growth to the city. The city was further expanded with the completion of the Los Angeles Aqueduct in 1913, which delivers water from Eastern California . Los Angeles has
9660-563: The rest of the surrounding landscape. Most construction is done in separate units, rather than wall-to-wall . However, Downtown Los Angeles itself has many buildings over 30 stories, with fourteen over 50 stories, and two over 70 stories, the tallest of which is the Wilshire Grand Center . Los Angeles has a two-season semi-arid climate ( Köppen : BSh ) with dry summers and very mild winters, but it receives more annual precipitation than most semi-arid climates, narrowly missing
9765-632: The sketch comedy series Portlandia had a sketch set at the "Deuce Hotel", where the obnoxiously hip staff hand out complimentary turntables and typewriters to all guests; it was a parody specifically of Ace Hotel Portland. On her song Ace , rapper Noname talks about being at Ace Hotel in London. Bon Iver makes a reference to the Ace Hotel Los Angeles in the song "33 "GOD"" on the album 22, A Million . Los Angeles Los Angeles , often referred to by its initials L.A. ,
9870-619: The steeply-dipping Palos Verdes Hills fault zone. The middle Miocene volcanics can be seen locally within the southwest block. The northwestern block consists of clastic marine sediments of Late Cretaceous to Pleistocene age. Middle Miocene volcanics are also present. This block has a broad anticline that is truncated by the Santa Monica fault zone. The central block contains both marine and non-marine clastic rock units interbedded with volcanic rocks that are late Cretaceous to Pliocene in age. Pliocene and Quaternary strata are most visible within
9975-417: The topography on older rocks. It is a mixed sedimentary and volcanic unit whose base is an erosional unconformity. The unit consists of 3 parts: First is a basal marine conglomeratic sandstone, followed by a dominantly basaltic middle layer of multiple submarine lava flows and tuffs. The youngest part of this unit is a sedimentary breccia, conglomerate, sandstone, and a siltstone . The earliest deposits of
10080-400: The two major basement rock units for the LA Basin. Large-scale movement along the Newport–Inglewood zone juxtaposed the two bedrock units along the east and west margins. During this phase, the basin was above sea level. The hallmarks of this phase were successive shoreline transgression and regression cycles. Deposition of older marine and non-marine sediments began to fill the basin. Towards
10185-635: The worst rush hour periods in the world, according to an annual traffic index by navigation system maker, TomTom . LA drivers spend an additional 92 hours in traffic each year. During the peak rush hour, there is 80% congestion, according to the index. Los Angeles is often characterized by the presence of low-rise buildings, in contrast to New York City. Outside of a few centers such as Downtown , Warner Center , Century City , Koreatown , Miracle Mile , Hollywood, and Westwood , skyscrapers and high-rise buildings are not common in Los Angeles. The few skyscrapers built outside of those areas often stand out above
10290-633: The year, with an average of only 35 days with measurable precipitation annually. Temperatures in the coastal basin exceed 90 °F (32 °C) on a dozen or so days in the year, from one day a month in April, May, June and November to three days a month in July, August, October and to five days in September. Temperatures in the San Fernando and San Gabriel Valleys are considerably warmer. Temperatures are subject to substantial daily swings; in inland areas
10395-502: Was 2.0 inches (5 cm) on January 15, 1932. While the most recent snowfall occurred in February 2019, the first snowfall since 1962, with snow falling in areas adjacent to Los Angeles as recently as January 2021. Brief, localized instances of hail can occur on rare occasions, but are more common than snowfall. At the official downtown station, the highest recorded temperature is 113 °F (45 °C) on September 27, 2010, while
10500-488: Was accompanied with the rotation of the western Transverse Ranges. This rotation is responsible for the placement and northwest–southeast orientation of the LA Basin. Early in the Miocene, before deposition of the Topanga, high heat flow and transtension caused the extension of the basin. As the crust thinned, the basin began to subside from isostatic pressure as a result of large amounts of sediment deposition. Because
10605-697: Was announced that Ace Hotel London Shoreditch would not reopen after being closed because of the COVID-19 pandemic. In 2021, Ace Hotel opened locations in Brooklyn, New York; Toronto, Canada and Sydney, Australia. In 2024 Ace is poised to open a hotel on the Athens Riviera in Greece. According to Calderwood, the style and furnishing of each Ace property is designed to reflect its location, with an eye towards re-imagining properties that are "challenged." Former locations: The 2011 episode "Blunderbuss" of
10710-435: Was discovered in the city and surrounding area in 1892, and by 1923, the discoveries had helped California become the country's largest oil producer, accounting for about one-quarter of the world's petroleum output. By 1900, the population had grown to more than 102,000, putting pressure on the city's water supply . The completion of the Los Angeles Aqueduct in 1913, under the supervision of William Mulholland , ensured
10815-515: Was not". The settlement of Indigenous Californians in the modern Los Angeles Basin and the San Fernando Valley was dominated by the Tongva (now also known as the Gabrieleño since the era of Spanish colonization). The historic center of Tongva power in the region was the settlement of Yaanga ( Tongva : Iyáangẚ ), meaning "place of the poison oak ", which would one day be the site where
10920-573: Was opened. Friends Alex Calderwood, Wade Weigel, and Doug Herrick purchased and transformed a Seattle halfway house into an affordable hotel that would appeal to the creative class . Calderwood and Weigel had previously founded Rudy's , a reinvigorated traditional barbershop concept they started in Seattle, which eventually expanded to more than a dozen locations, along with an experiential marketing company known as Neverstop, and an audiovisual arts platform known as ARO.Space with Pearl Jam co-founder Stone Gossard and Kung Faux creator Mic Neumann, who
11025-600: Was originally inhabited by the indigenous Tongva people and later claimed by Juan Rodríguez Cabrillo for Spain in 1542. The city was founded on September 4, 1781, under Spanish governor Felipe de Neve , on the village of Yaanga . It became a part of the First Mexican Empire in 1821 following the Mexican War of Independence . In 1848, at the end of the Mexican–American War , Los Angeles and
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