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Pilot Knob (Imperial County, California)
Pilot Knob (also, Avie Quah-la-Altwa, Ha-bee-co-la-la, and San Pablo) is a peak in Imperial County, California. Pilot Knob is located southeast of Ogilby, It rises to an elevation of . Pilot Knob is a rocky landform, geologically a Volcanic plug, west of Yuma, Arizona–Winterhaven, California; it is connected to the Cargo Muchacho Mountains, the central portion of the mountains being about north. Pilot Knob was named for its prominence as a landmark for riverboat traffic in the 19th-20th centuries on the Colorado River which borders Winterhaven–Yuma. Pilot Knob is an Area of Critical Environmental Concern administered by the Bureau of Land Management. Pilot Knob description Separated from the center of the Cargo Muchacho Mountains by 7 mi, the volcanic landform is at the base of alluvial fans. Pilot Knob has a height of , and the entire mountain block is about 2 x 2 mi. The mountain has a rock quarry on its north side, visible from Interstate 8. Access ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cargo Muchacho Mountains
The Cargo Muchacho Mountains are located in the southeast Colorado Desert in the Lower Colorado River Valley, in Imperial County, California in the United States. Much of the range's geology was described by the geologist John T. Dillon. Geography The range lies in a northwest-southeasterly direction, southeast of the Imperial Valley and northwest of the Colorado River and Yuma, AZ– Winterhaven, CA. The range lies south and southeast of the Chocolate Mountains and east of the Algodones Dunes. Pilot Knob is a volcanic plug A volcanic plug, also called a volcanic neck or lava neck, is a volcanic object created when magma hardens within a vent on an active volcano. When present, a plug can cause an extreme build-up of high gas pressure if rising volatile-charged mag ... formed landmark peak to the south of the range. The mountains are home to the American Girl Mine, and the Golden Bee and Cargo mines. The All American Canal passes to the south of the range. References ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Quarry
A quarry is a type of open-pit mine in which dimension stone, rock, construction aggregate, riprap, sand, gravel, or slate is excavated from the ground. The operation of quarries is regulated in some jurisdictions to reduce their environmental impact. The word ''quarry'' can also include the underground quarrying for stone, such as Bath stone. Types of rock Types of rock extracted from quarries include: *Chalk *China clay *Cinder *Clay *Coal * Construction aggregate (sand and gravel) * Coquina * Diabase *Gabbro *Granite * Gritstone *Gypsum *Limestone *Marble *Ores *Phosphate rock *Quartz *Sandstone * Slate *Travertine Stone quarry Stone quarry is an outdated term for mining construction rocks (limestone, marble, granite, sandstone, etc.). There are open types (called quarries, or open-pit mines) and closed types ( mines and caves). For thousands of years, only hand tools had been used in quarries. In the 18th century, the use of drilling and blasting operatio ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Volcanic Plugs Of California
A volcano is a rupture in the crust of a planetary-mass object, such as Earth, that allows hot lava, volcanic ash, and gases to escape from a magma chamber below the surface. On Earth, volcanoes are most often found where tectonic plates are diverging or converging, and most are found underwater. For example, a mid-ocean ridge, such as the Mid-Atlantic Ridge, has volcanoes caused by divergent tectonic plates whereas the Pacific Ring of Fire has volcanoes caused by convergent tectonic plates. Volcanoes can also form where there is stretching and thinning of the crust's plates, such as in the East African Rift and the Wells Gray-Clearwater volcanic field and Rio Grande rift in North America. Volcanism away from plate boundaries has been postulated to arise from upwelling diapirs from the core–mantle boundary, deep in the Earth. This results in hotspot volcanism, of which the Hawaiian hotspot is an example. Volcanoes are usually not created where two tectonic plates slide pa ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Mountains Of Imperial County, California
A mountain is an elevated portion of the Earth's crust, generally with steep sides that show significant exposed bedrock. Although definitions vary, a mountain may differ from a plateau in having a limited summit area, and is usually higher than a hill, typically rising at least 300 metres (1,000 feet) above the surrounding land. A few mountains are isolated summits, but most occur in mountain ranges. Mountains are formed through tectonic forces, erosion, or volcanism, which act on time scales of up to tens of millions of years. Once mountain building ceases, mountains are slowly leveled through the action of weathering, through slumping and other forms of mass wasting, as well as through erosion by rivers and glaciers. High elevations on mountains produce colder climates than at sea level at similar latitude. These colder climates strongly affect the ecosystems of mountains: different elevations have different plants and animals. Because of the less hospitable terrain and ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Lower Colorado River Valley
The Lower Colorado River Valley (LCRV) is the river region of the lower Colorado River of the southwestern United States in North America that rises in the Rocky Mountains and has its outlet at the Colorado River Delta in the northern Gulf of California in northwestern Mexico, between the states of Baja California and Sonora. This north–south stretch of the Colorado River forms the border between the U.S. states of California/Arizona and Nevada/Arizona, and between the Mexican states of Baja California/Sonora. It is commonly defined as the region from below Hoover Dam and Lake Mead to its outlet at the northern Gulf of California (Sea of Cortez); it includes the Colorado River proper, canyons, the valley, mountain ranges with wilderness areas, and the floodplain and associated riparian environments. It is home to recreation activities from the river, the lakes created by dams, agriculture, and the home of various cities, communities, and towns along the river, or associated wi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
KIVA (TV)
KIVA (channel 11) was a television station in Yuma, Arizona, United States. It was the first local television station in Yuma and, for more than half of its existence, the only local station. It signed on October 8, 1953, and signed off January 31, 1970, being affiliated with NBC throughout its history. For more than half of its existence, it was owned by Bruce Merrill. The station shut down because of economic troubles resulting from the presence of three total stations in the market. Construction and early years The Imperial Valley gained its first television station on March 25, 1953, when the Federal Communications Commission (FCC) awarded a permit to Valley Telecasting to construct a television station on VHF channel 11. The original studios and transmitter would be located at Pilot Knob in California, about west of Yuma. Their old studios are still standing, south of 8, north of Frontage Rd., south/east of the Winterhaven Agricultural Station. On October 6, 1953, th ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Alamo Canal
The Alamo Canal ( es, Canal del Álamo) was a long waterway that connected the Colorado River to the head of the Alamo River. The canal was constructed to provide irrigation to the Imperial Valley. A small portion of the canal was located in the United States but the majority of the canal was located in Mexico. The Alamo Canal is also known as the Imperial Canal. Planning and construction Historically, the Colorado River flowed to the Gulf of California, however in times of the spring floods the Colorado River would overflow its banks and also drain into the Alamo River. Flow from the Alamo River then drained to the Salton Sink area of the Colorado Desert. Such overflow had been observed in 1884, 1891, 1892, and 1895. In the mid- to late-Nineteenth Century several individuals, most notably O. M. Wozencraft, proposed irrigating the Salton Sink by diverting a controlled gravity-fed flow of the Colorado River through the existing dry Alamo River bed. The Alamo Canal was the f ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Butterfield Overland Mail
Butterfield Overland Mail (officially the Overland Mail Company)Waterman L. Ormsby, edited by Lyle H. Wright and Josephine M. Bynum, "The Butterfield Overland Mail", The Huntington Library, San Marino, California, 1991. was a stagecoach service in the United States operating from 1858 to 1861. It carried passengers and U.S. Mail from two eastern termini, Memphis, Tennessee, and St. Louis, Missouri, to San Francisco, California. The routes from each eastern terminus met at Fort Smith, Arkansas, and then continued through Indian Territory (Oklahoma), Texas, New Mexico, Arizona, Mexico, and California ending in San Francisco.Goddard Bailey, Special Agent to Hon. A.V. Brown. P.M., Washington, D.C., The Senate of the United States, Second Session, Thirty-Fifth Congress, 1858–'59, Postmaster General, Appendix, "Great Overland Mail", Washington, D. C., October 18, 1858.https://babel.hathitrust.org/cgi/pt?id=uc1.c109481050;view=1up;seq=745 On March 3, 1857, Congress authorized the U.S. ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Emigrant Crossing
Emigration is the act of leaving a resident country or place of residence with the intent to settle elsewhere (to permanently leave a country). Conversely, immigration describes the movement of people into one country from another (to permanently move to a country). A migrant ''emigrates'' from their old country, and ''immigrates'' to their new country. Thus, both emigration and immigration describe migration, but from different countries' perspectives. Demographers examine push and pull factors for people to be pushed out of one place and attracted to another. There can be a desire to escape negative circumstances such as shortages of land or jobs, or unfair treatment. People can be pulled to the opportunities available elsewhere. Fleeing from oppressive conditions, being a refugee and seeking asylum to get refugee status in a foreign country, may lead to permanent emigration. Forced displacement refers to groups that are forced to abandon their native country, such as by ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Southern Emigrant Trail
:''The Southern Emigrant Trail should not be confused with the Applegate Trail, which is part of the Northern Emigrant Trails.'' Southern Emigrant Trail, also known as the Gila Trail, the Kearny Trail, Southern Trail and the Butterfield Stage Trail, was a major land route for immigration into California from the eastern United States that followed the Santa Fe Trail to New Mexico during the California Gold Rush. Unlike the more northern routes, pioneer wagons could travel year round, mountain passes not being blocked by snows, however it had the disadvantage of summer heat and lack of water in the desert regions through which it passed in New Mexico Territory and the Colorado Desert of California. Subsequently, it was a route of travel and commerce between the eastern United States and California. Many herds of cattle and sheep were driven along this route and it was followed by the San Antonio-San Diego Mail Line in 1857–1858 and then the Butterfield Overland Mail from 1 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
California Gold Rush
The California Gold Rush (1848–1855) was a gold rush that began on January 24, 1848, when gold was found by James W. Marshall at Sutter's Mill in Coloma, California. The news of gold brought approximately 300,000 people to California from the rest of the United States and abroad. The sudden influx of gold into the money supply reinvigorated the American economy; the sudden population increase allowed California to go rapidly to statehood, in the Compromise of 1850. The Gold Rush had severe effects on Native Californians and accelerated the Native American population's decline from disease, starvation and the California genocide. The effects of the Gold Rush were substantial. Whole indigenous societies were attacked and pushed off their lands by the gold-seekers, called "forty-niners" (referring to 1849, the peak year for Gold Rush immigration). Outside of California, the first to arrive were from Oregon, the Sandwich Islands (Hawaii) and Latin America in late 1848. Of th ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Saint Thomas Yuma Indian Mission
The Saint Thomas Indian Mission is a Catholic mission in Winterhaven, California. It was dedicated in 1923, and its design replicates the Mission Puerto de Purísima Concepción, which once stood on the site. History Construction began on the Purísima Concepción Mission in the fall of 1780 by Fathers Juan Antonio Barreneche and Francis Tomás Hermenogildo Garcés. Poorly defended, the mission was destroyed the following year, during a raid and massacre over the period of July 17–19, 1781 by Quechans (Yuma), frustrated by their treatment at the hands of the Spanish colonists. The raid left fathers Garcés and Barreneche dead, beaten to death with clubs, over 100 Spanish settlers killed, and 74 more were held as prisoners until Governor Pedro Fages paid a ransom for their release in 1782. The site is California Registered Historic Landmark #350, and a plaque on the site and statue of father Garcés commemorates the site of the ill-fated mission. The mission was one of two i ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
