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John Livermore
John Sealy Livermore (April 16, 1918 – February 7, 2013) was an American geologist who discovered or helped to discover four major gold deposits in northern Nevada. Livermore was born in San Francisco, California, and was descended from a pioneer California family with roots in Maine. An ancestor, Elijah Livermore, built a grist mill and a saw mill on the Androscoggin River in 1791. The town of Livermore Falls, Maine, is named after him. His great-grandfather, Horatio Gates Livermore, came to California from Maine during the Gold Rush in 1850, and later became a California State Senator from Eldorado County. His great-grandfather and his grandfather, Horatio Putnam Livermore, who came to California in 1856, used their Maine mill experience to become involved in the earliest days of hydroelectric power, helping to build the original Folsom Dam. His father, Norman Banks Livermore was a founding board member of Pacific Gas and Electric. His mother, Caroline Sealy Liver ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
San Francisco
San Francisco (; Spanish language, Spanish for "Francis of Assisi, Saint Francis"), officially the City and County of San Francisco, is the commercial, financial, and cultural center of Northern California. The city proper is the List of California cities by population, fourth most populous in California and List of United States cities by population, 17th most populous in the United States, with 815,201 residents as of 2021. It covers a land area of , at the end of the San Francisco Peninsula, making it the second most densely populated large U.S. city after New York City, and the County statistics of the United States, fifth most densely populated U.S. county, behind only four of the five New York City boroughs. Among the 91 U.S. cities proper with over 250,000 residents, San Francisco was ranked first by per capita income (at $160,749) and sixth by aggregate income as of 2021. Colloquial nicknames for San Francisco include ''SF'', ''San Fran'', ''The '', ''Frisco'', and '' ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Folsom Dam
Folsom Dam is a concrete gravity dam on the American River of Northern California in the United States, about northeast of Sacramento. The dam is high and long, flanked by earthen wing dams. It was completed in 1955, and officially opened the following year. Located at the junction of the north and south forks of the American River, the dam was built by the United States Army Corps of Engineers, and was transferred to the United States Bureau of Reclamation upon its completion. The dam and its reservoir, Folsom Lake, are part of the Central Valley Project, a multipurpose project that provides flood control, hydroelectricity, irrigation, and municipal water supply. To increase Sacramento's flood protection to 200-year flood protection (meaning that the area is protected from a flood that has a 0.5% chance of occurring in any given year), the Corps of Engineers recently constructed an auxiliary spillway, which was completed in October 2017; it enables Folsom Dam operators to incr ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Carlin–type Gold Deposit
Carlin–type gold deposits are sediment-hosted disseminated gold deposits. These deposits are characterized by invisible (typically microscopic and/or dissolved) gold in arsenic rich pyrite and arsenopyrite. This dissolved kind of gold is called "Invisible Gold", as it can only be found through chemical analysis. The deposit is named after the Carlin mine, the first large deposit of this type discovered in the Carlin Trend, Nevada. Geology The Carlin type deposits show enrichment in the elements gold, arsenic, antimony, mercury, thallium and barium. This enrichment is created by hydrothermal circulation with a temperature of up to 300 °C. The underlying rocks out of which the minerals are dissolved are normally silty carbonates, although also silicates and other sediments are possible. The source of the heating for the water in the hydrothermal circulation is still under discussion. The material in the deposit is altered in a way that the carbonate minerals are eith ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Carlin Trend
The Carlin Unconformity or Carlin Trend is a geologic feature in northeastern Nevada which represents a period of erosion or non-deposition likely associated with a collision between a tectonic crustal block called a terrane and the North American Plate. The collision occurred during the Mississippian Period, about 350 million years before present. The collision is associated with the Antler Orogeny. The collision induced higher crustal temperatures and pressures which produced numerous hot springs along the suture zone. Several episodes of subsurface magmatism are known to have occurred subsequent to the collision, associated with tectonic forces affecting the entire Basin and Range Province. During each of these episodes, and particularly during the Eocene epoch, hot springs brought dissolved minerals toward the surface, precipitating them out along fissures. Among these minerals were gold and silver. The Carlin Gold trend is one of the world's richest gold mining districts. ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Carlin Mine
Carlin may refer to: People * Carlin (name), including a list of people with the name Places * 4121 Carlin, a main belt asteroid * Carlin, Nevada, United States * Carlin How, a village in northern England, UK * Carlin Precinct, Calhoun County, Illinois, USA * Carlin Tunnel, in Elko County, Nevada, USA * Carlin Unconformity, a geological feature in Nevada notable as a gold mining area * Delcambre Canal, in the U.S. state of Louisiana, also known as Bayou Carlin Other uses * Carlin Act, legislation in the United States * Carlin America, an independent music publishing conglomerate * Carlin Motorsport, a motor racing team in the United Kingdom * Carlin stone, in Scotland * Pug, a breed of dog (also known as Carlin) See also * * Charlene (other) * Charlin (other) * Carling (other) * Karlin (other) * Carline (name) * Carly (name) Carly is a given name, a feminine form of Carl. Hanks; Hardcastle; Hodges (2006) p. 47. It is also a pet form of give ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Newmont Mining
Newmont Corporation is a gold mining company based in Greenwood Village, Colorado, United States. It is the world's largest gold mining corporation. Incorporated in 1921, it owns gold mines in Nevada, Colorado, Ontario, Quebec, Mexico, the Dominican Republic, Australia, Ghana, Argentina, Peru, and Suriname. In addition to gold, Newmont mines copper, silver, zinc and lead. Newmont has approximately 31,600 employees and contractors worldwide, and is the only gold company in the S&P 500, Standard & Poor's 500 stock market index. Newmont is spending $500 million on renewable energy projects through 2025 towards its commitment of reducing carbon emissions by 30% by 2030. Operations History Early years The Newmont Company was founded in 1916 in New York by Colonel (United States), Colonel William Boyce Thompson as a holding company to invest in Worldwide mineral, Petroleum, oil, and related companies. According to company lore, the name "Newmont" is a portmanteau "New York" a ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ralph J
Ralph (pronounced ; or ,) is a male given name of English, Scottish and Irish origin, derived from the Old English ''Rædwulf'' and Radulf, cognate with the Old Norse ''Raðulfr'' (''rað'' "counsel" and ''ulfr'' "wolf"). The most common forms are: * Ralph, the common variant form in English, which takes either of the given pronunciations. * Rafe, variant form which is less common; this spelling is always pronounced , as are all other English spellings without "l". * Raife, a very rare variant. * Raif, a very rare variant. Raif Rackstraw from H.M.S. Pinafore * Ralf, the traditional variant form in Dutch, German, Swedish, and Polish. * Ralfs, the traditional variant form in Latvian. * Raoul, the traditional variant form in French. * Raúl, the traditional variant form in Spanish. * Raul, the traditional variant form in Portuguese and Italian. * Raül, the traditional variant form in Catalan. * Rádhulbh, the traditional variant form in Irish. Given name Middle Ages * Ralp ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Sierra Club
The Sierra Club is an environmental organization with chapters in all 50 United States, Washington D.C., and Puerto Rico. The club was founded on May 28, 1892, in San Francisco, California, by Scottish-American preservationist John Muir, who became the first president as well as the longest-serving president, at approximately 20 years in this leadership position. The Sierra Club operates only in the United States and holds the legal status of 501(c)(4) nonprofit social welfare organization. Sierra Club Canada is a separate entity. Traditionally associated with the progressive movement, the club was one of the first large-scale environmental preservation organizations in the world, and currently engages in lobbying politicians to promote environmentalist policies. Recent focuses of the club include promoting sustainable energy and mitigating global warming, as well as opposition to the use of coal, hydropower and nuclear power. The club is known for its political endorsements, w ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Norman Livermore
Norman Banks "Ike" Livermore Jr. (March 27, 1911 – December 5, 2006) was an American environmentalist, lumber industry executive, and state official. He was the only member of California governor Ronald Reagan's cabinet to serve during the full eight years of his administration. He played baseball at the 1936 Summer Olympics in Berlin. Early life and education Livermore was descended from a pioneer California family with roots in Maine. An ancestor, Elijah Livermore, built a grist mill and a saw mill on the Androscoggin River in 1791. The town of Livermore Falls, Maine, is named after that ancestor. His great-grandfather, Horatio Gates Livermore, came to California from Maine during the Gold Rush in 1850, and later became a State Senator from Eldorado County. His great-grandfather and his grandfather, Horatio Putnam Livermore, who came to California in 1856, used their Maine mill experience to become involved in the earliest days of hydroelectric power, helping to ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Angel Island (California)
Angel Island is an island in San Francisco Bay. The entire island is included within Angel Island State Park, administered by California State Parks. The island, a California Historical Landmark, has been used by humans for a variety of purposes, including seasonal hunting and gathering by indigenous peoples, water and timber supply for European ships, ranching by Mexicans, United States military installations, a United States Public Health Service Quarantine Station, and a U.S. Bureau of Immigration inspection and detention facility. The Angel Island Immigration Station, on the northeast corner of the island, which has been designated a National Historic Landmark, was where officials detained, inspected, and examined approximately one million immigrants, who primarily came from Asia. Under the Chinese Exclusion Act of 1882, the first United States law to restrict a group of immigrants based on their race, nationality, and class, all arriving Chinese immigrants were to be examined ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Richardson Bay
Richardson Bay (originally Richardson's Bay) is a shallow, ecologically rich arm of San Francisco Bay, managed under a Joint Powers Agency of four northern California cities. The Richardson Bay Sanctuary was acquired in the early 1960s by the National Audubon Society. The bay was named for William A. Richardson, early 19th century sea captain and builder in San Francisco. It contains both Strawberry Spit and Aramburu Island. In spite of its urbanized periphery, Richardson Bay supports extensive eelgrass areas and sizable undisturbed intertidal habitats. It is a feeding and resting area for a panoply of estuarine and pelagic birds, while its associated marshes and littoral zones support a variety of animal and plant life. Richardson Bay has been designated as an Important Bird Area (IBA), based upon its large number of annual bird visitors and residents, its sightings of California clapper rail and its strategic location on the Pacific Flyway. The bay's waters are subjec ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Marin Headlands
The Marin Headlands is a hilly peninsula at the southernmost end of Marin County, California, United States, located just north of San Francisco across the Golden Gate Bridge, which connects the two counties and peninsulas. The entire area is part of the Golden Gate National Recreation Area. The Headlands are famous for their views of the Bay Area, especially of the Golden Gate Bridge. Climate The Headlands sometimes create their own clouds when moist, warm Pacific Ocean breezes are pushed into higher, colder air, causing condensation, fog, fog drip and perhaps rain. The hills also get more precipitation than at sea level, for the same reason. However, despite being relatively wet, strong gusty Pacific winds prevent dense forests from forming. The many gaps, ridges, and valleys in the hills increase the wind speed and periodically, during powerful winter storms, these winds can reach hurricane force. In summer, breezes can still be very gusty, when the oceanic air and fog cross ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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