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Pahranagat Range
The Pahranagat Range is a mountain range in Lincoln County, Nevada, Lincoln County, Nevada. References See also * Pahranagat Valley * Pahranagat National Wildlife Refuge * Alamo bolide impact Mountain ranges of Nevada Mountain ranges of Lincoln County, Nevada {{LincolnCountyNV-geo-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Alamo Bolide Impact
The Alamo bolide impact occurred 377–378 million years ago, when one or more hypervelocity objects from space slammed into shallow marine waters at a site that is now the Devonian Guilmette Formation of the Worthington Mountains and Schell Creek Range of southeastern Nevada; the event is named for breccias of metamorphosed crushed rock deposits, found near the town of Alamo, Nevada (the "Alamo Breccia"). This catastrophic impact event resulted in what is one of the best-exposed and has become the most accurately dated impact events; it occurred within the Frasnian age of the Devonian at about 377-378 Year#SI prefix multipliers, Ma, a moment in time that was about 5.9 Ma prior to the Late Devonian extinction, Frasnian/Famennian extinction events, which it is unlikely to have affected. The actual impact site has not yet been significantly documented—even its precise diameter and its internal structural features are not yet clear enough to make speculations on the mass and tra ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Lincoln County, Nevada
Lincoln County is a County (United States), county located in the U.S. state of Nevada. As of the 2010 United States Census, 2010 census, the population was 5,345. Its county seat is Pioche, Nevada, Pioche. Like many counties in Nevada, it is dry and sparsely populated, though notable for containing the Area 51 government Air Force base. History Lincoln County was established in 1866 after Congress enlarged Nevada by moving its state line eastward and southward at the expense of Utah Territory, Utah and Arizona Territory, Arizona territories. It is named after Abraham Lincoln, the 16th President of the United States. Original legislation called for the creation of a "Stewart County", after Nevada Senator William M. Stewart, but this was later changed in a substitute bill. Crystal Springs, Nevada, Crystal Springs was the county's first county seat, seat in 1866, followed by Hiko, Nevada, Hiko in 1867, and Pioche, Nevada, Pioche in 1871. Lincoln County initially included a ranch ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
USGS
The United States Geological Survey (USGS), formerly simply known as the Geological Survey, is a scientific agency of the United States government. The scientists of the USGS study the landscape of the United States, its natural resources, and the natural hazards that threaten it. The organization's work spans the disciplines of biology, geography, geology, and hydrology. The USGS is a fact-finding research organization with no regulatory responsibility. The agency was founded on March 3, 1879. The USGS is a bureau of the United States Department of the Interior; it is that department's sole scientific agency. The USGS employs approximately 8,670 people and is headquartered in Reston, Virginia. The USGS also has major offices near Lakewood, Colorado, at the Denver Federal Center, and Menlo Park, California. The current motto of the USGS, in use since August 1997, is "science for a changing world". The agency's previous slogan, adopted on the occasion of its hundredth anniv ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Nevada
Nevada ( ; ) is a U.S. state, state in the Western United States, Western region of the United States. It is bordered by Oregon to the northwest, Idaho to the northeast, California to the west, Arizona to the southeast, and Utah to the east. Nevada is the List of U.S. states and territories by area, 7th-most extensive, the List of U.S. states and territories by population, 32nd-most populous, and the List of U.S. states and territories by population density, 9th-least densely populated of the U.S. states. Nearly three-quarters of Nevada's people live in Clark County, Nevada, Clark County, which contains the Las Vegas–Paradise, NV MSA, Las Vegas–Paradise metropolitan area, including three of the state's four largest incorporated cities. Nevada's capital is Carson City, Nevada, Carson City. Las Vegas is the largest city in the state. Nevada is officially known as the "Silver State" because of the importance of silver to its history and economy. It is also known as the "Battle ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Pahranagat Valley
The Pahranagat Valley is a Tonopah Basin landform in Lincoln County, Nevada. The more fertile part of Pahranagat Valley is a narrow ribbon of green (no more than wide) like an oasis in the vast Nevada desert. It is approximately long running north and south and is watered by three large natural springs of water ( Hiko Springs, Crystal Springs and Ash Springs) and many smaller ones as well. It has four lakes, two near the north end of the valley (Nesbitt Lake and Frenchie Lake) and two towards the south end (Upper Pahranagat Lake and Lower Pahranagat Lake). The southern half of the valley including the two lakes is home to the Pahranagat Valley National Wildlife Refuge. Pahranagat Valley is bordered on the west by a range of mountains called the Mount Irish Range and then the Pahranagat Range. It is bordered on the east by the Hiko Range. State Route 318 and then U.S. Route 93 traverse the entire length of the valley. The more inhabited areas in Pahranagat Valley include ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Pahranagat National Wildlife Refuge
The Pahranagat National Wildlife Refuge is a protected wildlife refuge, at the southern end of the Pahranagat Valley and administered by the U.S. Fish and Wildlife Service. It is north of Las Vegas, Nevada, in Lincoln County, Nevada. The refuge was created on August 16, 1963, and is part of the larger Desert National Wildlife Refuge Complex, which also includes the Ash Meadows National Wildlife Refuge, the Desert National Wildlife Refuge, and the Moapa Valley National Wildlife Refuge. The refuge provides high-quality migration and wintering habitat for migrating birds, especially waterfowl, within the Pacific Flyway. History Work is underway to restore wetland and desert upland habitats to what was found on the refuge over 100 years ago. Species of concern that spend part of the year at Pahranagat Endangered Endangered species include: * Southwestern willow flycatcher Threatened Threatened species include: * Desert tortoise The desert tortoise (''Gopherus agassizii''), ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Mountain Ranges Of Nevada
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] |
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