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- The crust thinned and "collapsed," forming an immense geologic "bowl." Sand, silt and clay from the sea and ancient rivers poured into the bowl. Microorganisms also poured into this hole, piling high in huge layers. These layers would eventually become the oilfields of Los Angeles.
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What is the Los Angeles Basin?
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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.
- History of Los Angeles facts
By the time of the arrival of the Spanish in the 18th...
- Los Angeles Aqueduct facts
The Los Angeles Aqueduct system, comprising the Los Angeles...
- History of Los Angeles facts
- Early History
- Spanish Era 1769–1821
- Mexican Era, 1821–1848
- Transitional Era, 1848–1870
- Industrial Expansion and Growth, 1870—1913
- Boom Town, 1913–1941
- World War II, 1941–1945
- Postwar: Baby Boomers
- 1950–2000
- Population History
By 3000 B.C. the area was occupied by the Hokan-speaking people of the Milling Stone Period who fished, hunted sea mammals, and gathered wild seeds. They were later replaced by migrants — possibly fleeing drought in the Great Basin — who spoke a Uto-Aztecan language called Tongva. The Tongva people called the Los Angeles region Yaa in Tongva. By th...
In 1542 and 1602 the first Europeans to visit the region were Captain Juan Rodriguez Cabrillo and Captain Sebastián Vizcaíno. It would be another 166 years before another European would visit the region.
Mexico's independence from Spain in 1821 was celebrated with great festivity throughout Alta California. No longer subjects of the king, people were now ciudadanos, citizens with rights under the law. In the plazas of Monterey, Santa Barbara, Los Angeles, and other settlements, people swore allegiance to the new government, the Spanish flag was low...
According to historian Mary P. Ryan, "The U.S. army swept into California with the surveyor as well as the sword and quickly translated Spanish and Mexican practices into cartographic representations." Under colonial law, land held by grantees was not disposable. It reverted to the government. It was determined that under U.S. property law, lands o...
In the 1870s, Los Angeles was still little more than a village of 5,000. By 1900, there were over 100,000 occupants of the city. Several men actively promoted Los Angeles, working to develop it into a great city and to make themselves rich. Angelenos set out to remake their geography to challenge San Francisco with its port facilities, railway term...
Hollywood
Hollywoodhas been synonymous worldwide with the film industry for over a hundred years. It was incorporated as the City of Hollywood in 1903 but merged into LA in 1910. In the 1900s Jewish movie makers from New York found the sunny, temperate weather more suitable for year-round location shooting. It boomed into the cinematic heart of the United States, and has been the home and workplace of actors, directors and singers that range from small and independent to world famous, leading to the de...
Notable events
Swimming pool desegregation An end to racial segregation in municipal swimming pools was ordered in summer 1931 by a Superior Court Judge after Ethel Prioleau sued the city, complaining that she as a Negro was not allowed to use the pool in nearby Exposition Parkbut had to travel 3.6 miles to the designated "negro swimming pool." Summer Olympics Los Angeles hosted the 1932 Summer Olympics. The Los Angeles Memorial Coliseum, which had opened in May, 1923 with a seating capacity of 76,000, was...
Annexations and consolidations
The City of Los Angeles mostly remained within its original 28 square-mile (73 km²) landgrant until the 1890s. The original city limits are visible even today in the layout of streets that changes from a north-south pattern outside of the original land grant to a pattern that is shifted roughly 15 degrees east of the longitude in and closely around the area now known as Downtown. The first large additions to the city were the districts of Highland Park and Garvanza to the north, and the South...
During World War II, Los Angeles grew as a center for production of aircraft, war supplies and ammunitions. Thousands of people, both blacks and whites, from the South and the Midwest migrated to the Westto fill factory jobs. After President Roosevelt issued Executive Order 9066, which authorized military commanders to exclude "any or all persons" ...
After the war, hundreds of land developers bought land cheap, subdivided it, built on it, and got rich. Real-estate development replaced oil and agriculture as Southern California's principal industry. In 1955, Walt Disney opened the world's first theme park at Disneyland in Anaheim. In 1958, Major League Baseball's Dodgers and Giants left New York...
Beginning November 6, 1961, Los Angeles suffered three days of destructive bush fires. The Bel-Air—Brentwood and Santa Ynez fires destroyed 484 expensive homes and 21 other buildings along with 15,810 acres (64 km²) of brush in the Bel-Air, Brentwood, and Topanga Canyonneighborhoods. Most of the homes destroyed had wooden shake roofs, which not onl...
The population of Los Angeles reached more than 100,000 with the 1900 census (Los Angeles Evening Express, October 1, 1900), more than a million in 1930, more than two million in 1960, and more than 3 million in 1990.
Aug 18, 2024 · The bowl-shaped basin of rock under Los Angeles is up to five miles (8km) deep, filled with a mixture of gravel, sand and clay. The contrast between the hard rock and softer sediment are big...
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.
Oct 27, 2023 · The Los Angeles Aqueduct system, comprising the Los Angeles Aqueduct (Owens Valley aqueduct) and the Second Los Angeles Aqueduct, is a water conveyance system, built and operated by the Los Angeles Department of Water and Power.
The crust thinned and "collapsed," forming an immense geologic "bowl." Sand, silt and clay from the sea and ancient rivers poured into the bowl. Microorganisms also poured into this hole, piling high in huge layers. These layers would eventually become the oilfields of Los Angeles.
The Los Angeles Basin, into which more than 80 communities of Los Angeles County are crowded, is a trough-shaped region bounded on three sides by the Santa Monica, Santa Susana, San Gabriel, San Bernadino, and Santa Ana Mountains. On its fourth side, the county looks out over the Pacific Ocean.
