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Eldorado Mountains
The Eldorado Mountains, also called the El Dorado Mountains, are a north-south trending mountain range in southeast Nevada bordering west of the south-flowing Colorado River; the endorheic Eldorado Valley borders the range to the west, and the range is also on the western border of the Colorado River's Black Canyon of the Colorado, and El Dorado Canyon on the river. The range is southeast of Las Vegas, Nevada; and the Eldorado Mountains connect with the Highland and Newberry mountains. The name ''El Dorado'' is taken from the name of a legendary gold mine, and the ghost town-mining location of Nelson in Nelson Canyon, transects the central portion of the range. The ''Nelson Overlook'' is a viewing point over the Colorado River's El Dorado Canyon. Wilderness The mountain range contains the Eldorado Wilderness of . Established in 2004, the area is jointly managed by the NPS and the BLM. The NPS manages the eastern section within the Lake Mead National Recreation Area and the BLM ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Willow Beach, Lake Mohave
Willow Beach is located on the Arizona side of the Colorado River between Lake Mead and Lake Mohave. Both lakes are part of the Lake Mead National Recreation Area administered by the U.S. National Park Service. Willow Beach was a major trade center for Mojave and Virgin Ancestral Pueblo people along the routes between Coastal California and the American Southwest between 500 and 1200 CE.William Hoyt Smith“Molluskan Religiofauna Between the Southwestern United States and Southern California”(doctoral dissertation, University of Oregon, 2002), 23. Fish species * Rainbow Trout * Striped Bass * Sunfish * Catfish (Channel) * Carp * Razorback Sucker * Bonytail Chub Hatchery Willow Beach is the location of the Willow Beach National Fish Hatchery which is run by the US Fish and Wildlife Service, Department of the Interior. The hatchery produces Rainbow Trout for sport fishing. Rainbow Trout are stocked year round. The hatchery also raises Razorback Suckers and Bonytail Chub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Nelson, Nevada
Nelson is a census-designated place in Clark County, Nevada, United States. The community is in the Pacific Standard Time zone. The location of Nelson is in El Dorado Canyon, Eldorado Mountains. The town is in the southeast region of the Eldorado Valley. As of the 2010 census it had a population of 37. Geography Nelson is located along Nevada State Route 165, about southeast of its junction with U.S. Route 95. Route 165 continues east to a dead end at Nelsons Landing on the Colorado River, by water north of Cottonwood Cove on Lake Mojave. Nelson is about from Boulder City by road. Demographics History Early history The area known as Nelson was originally called Eldorado in 1775, by the Spaniards who made the original discoveries of gold in the area that is now Eldorado Canyon. The town was the site of one of the first major gold strikes in Nevada and one of the biggest mining booms in state history. Gold and silver were discovered here around 1859. The rush to the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Mohave People
Mohave or Mojave ( Mojave: 'Aha Makhav) are a Native American people indigenous to the Colorado River in the Mojave Desert. The Fort Mojave Indian Reservation includes territory within the borders of California, Arizona, and Nevada. The Colorado River Indian Reservation includes parts of California and Arizona and is shared by members of the Chemehuevi, Hopi, and Navajo peoples. The original Colorado River and Fort Mojave reservations were established in 1865 and 1870, respectively. Both reservations include substantial senior water rights in the Colorado River; water is drawn for use in irrigated farming. The four combined tribes sharing the Colorado River Indian Reservation function today as one geo-political unit known as the federally recognized Colorado River Indian Tribes; each tribe also continues to maintain and observe its individual traditions, distinct religions, and culturally unique identities. Culture In the 1930s, George Devereux, a Hungarian-French anthropo ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Lake Mohave
Lake Mohave is a reservoir on the Colorado River between the Hoover Dam and Davis Dam in Cottonwood Valley defining the border between Nevada and Arizona in the United States. This 67 mile stretch of the Colorado River flows past Boulder City, Nelson, Searchlight, Cottonwood Cove, Cal-Nev-Ari, and Laughlin to the west in Nevada and Willow Beach and Bullhead City to the east in Arizona. A maximum width of 4 miles wide and an elevation of , Lake Mohave encompasses 28,260 acres of water. As Lake Mead lies to the north of the Hoover Dam, Lake Mohave and adjacent lands forming its shoreline are part of the Lake Mead National Recreation Area administered by the U.S. National Park Service. Resorts and recreation There are three resorts on Lake Mohave: Katherine Landing and Willow Beach in Arizona and Cottonwood Cove in Nevada. Katherine Landing and Cottonwood Cove resorts offer lodging, RV parks with utility hook-ups, campgrounds, a restaurant a store, launch ramps, and marin ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ireteba Peaks Wilderness
Ireteba Peaks Wilderness is a 32,745 acre (13,251 ha) wilderness area spanning the area of the southern part of Eldorado Mountains to the northern parts of Lake Mohave. It is located 45 miles (72 km) south of Las Vegas and was designated as a wilderness area in 2002. Iretaba Peaks Wilderness is managed by the National Park Service and the Bureau of Land Management. Geography The peaks were named after one of the leaders of the Mohave tribe, Irataba. Native vegetation in the area includes creosote, yucca, desert willow, and several cacti species. Desert tortoises, Townsend’s big-eared bats, and bighorn sheep The bighorn sheep (''Ovis canadensis'') is a species of sheep native to North America. It is named for its large horns. A pair of horns might weigh up to ; the sheep typically weigh up to . Recent genetic testing indicates three distinct subspec ... can also be found in Iretaba Peaks Wilderness. See also * List of wilderness area in Nevada References {{Protect ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Bighorn Sheep
The bighorn sheep (''Ovis canadensis'') is a species of sheep native to North America. It is named for its large horns. A pair of horns might weigh up to ; the sheep typically weigh up to . Recent genetic testing indicates three distinct subspecies of ''Ovis canadensis'', one of which is endangered: ''O. c. sierrae''. Sheep originally crossed to North America over the Bering Land Bridge from Siberia; the population in North America peaked in the millions, and the bighorn sheep entered into the mythology of Native Americans. By 1900, the population had crashed to several thousand, due to diseases introduced through European livestock and overhunting. Taxonomy and genetics ''Ovis canadensis'' is one of two species of mountain sheep in North America; the other species being ''O. dalli'', the Dall sheep. Wild sheep crossed the Bering land bridge from Siberia into Alaska during the Pleistocene (about 750,000 years ago) and subsequently spread through western North America as far s ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Scrub Oak
Scrub oak is a common name for several species of small, shrubby oaks. It may refer to: *the Chaparral plant community in California, or to one of the following species. In California *California scrub oak (''Quercus berberidifolia''), a widespread species commonly referred to as scrub oak *Coastal scrub oak (''Quercus dumosa''), although currently defined in a narrow sense, has been applied to other scrub oaks now considered separate species ;Other California species referred to as "scrub oaks" *Leather oak ('' Quercus durata'') *Tucker oak ('' Quercus john-tuckeri'') *Island scrub oak (''Quercus pacifica'') In the Southwestern United States *Coahuila scrub oak (''Quercus intricata''), in the US, it is reported at only two sites: One in the Chisos Mountains inside Big Bend National Park, and the other 15 miles SW of Van Horn. *Gambel oak (''Quercus gambelii'')The hybrid of ''Q. gambelii'' and ''Q. turbinella'' is ''Quercus × pauciloba'', synonym ''Quercus undulata''. *Gray oa ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Creosote Bush
''Larrea tridentata'', called creosote bush and greasewood as a plant, chaparral as a medicinal herb, and ''gobernadora'' (Spanish language, Spanish for "governess") in Mexico, due to its ability to secure more water by inhibiting the growth of nearby plants. In Sonora, it is more commonly called ''hediondilla''; Spanish ''hediondo'' = "smelly". It is a flowering plant in the family Zygophyllaceae. The specific name ''tridentata'' refers to its three-toothed leaves. Distribution ''Larrea tridentata'' is a prominent species in the Mojave Desert, Mojave, Sonoran Desert, Sonoran, and Chihuahuan Desert, Chihuahuan Deserts of western North America, and its range includes those and other regions in portions of southeastern California, Arizona, southern Nevada, southwestern Utah, New Mexico, and Texas in the United States, and Chihuahua (state), Chihuahua, Sonora, Coahuila, Nuevo León, Zacatecas, Durango and San Luis Potosí, San Luis Potosì in Mexico. The species grows as far east a ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Bajada (geography)
A bajada consists of a series of coalescing alluvial fans along a mountain front. These fan-shaped deposits form by the deposition of sediment within a stream onto flat land at the base of a mountain.Desert Processes Working Grou"Summary: Alluvial Features, Bajadas", ''Knowledge Sciences, Inc.''. Retrieved on 9 October 2012 The usage of the term in landscape description or geomorphology derives from the Spanish word ''bajada'', generally having the sense of "descent" or "inclination". Formation and occurrence When a stream flows downhill, it picks up sediment along with other materials. As this stream emerges from a mountain front, the sediment carried begins to be deposited, such that coarser sediment is deposited closest to the base and the finer sediment grades outwards and deposits in a fan-shape away from the mountain face.National Geographic Society"Alluvial Fan" ''National Geographic''. Retrieved on 9 October 2012 The sediment is transported across a pediment into a clos ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Metamorphic Rock
Metamorphic rocks arise from the transformation of existing rock to new types of rock in a process called metamorphism. The original rock (protolith) is subjected to temperatures greater than and, often, elevated pressure of or more, causing profound physical or chemical changes. During this process, the rock remains mostly in the solid state, but gradually recrystallizes to a new texture or mineral composition. The protolith may be an igneous, sedimentary, or existing metamorphic rock. Metamorphic rocks make up a large part of the Earth's crust and form 12% of the Earth's land surface. They are classified by their protolith, their chemical and mineral makeup, and their texture. They may be formed simply by being deeply buried beneath the Earth's surface, where they are subject to high temperatures and the great pressure of the rock layers above. They can also form from tectonic processes such as continental collisions, which cause horizontal pressure, friction, and distorti ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Basalt
Basalt (; ) is an aphanite, aphanitic (fine-grained) extrusive igneous rock formed from the rapid cooling of low-viscosity lava rich in magnesium and iron (mafic lava) exposed at or very near the planetary surface, surface of a terrestrial planet, rocky planet or natural satellite, moon. More than 90% of all volcanic rock on Earth is basalt. Rapid-cooling, fine-grained basalt is chemically equivalent to slow-cooling, coarse-grained gabbro. The eruption of basalt lava is observed by geologists at about 20 volcanoes per year. Basalt is also an important rock type on other planetary bodies in the Solar System. For example, the bulk of the plains of volcanism on Venus, Venus, which cover ~80% of the surface, are basaltic; the lunar mare, lunar maria are plains of flood-basaltic lava flows; and basalt is a common rock on the surface of Mars. Molten basalt lava has a low viscosity due to its relatively low silica content (between 45% and 52%), resulting in rapidly moving lava flo ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Volcanic Rock
Volcanic rock (often shortened to volcanics in scientific contexts) is a rock formed from lava erupted from a volcano. In other words, it differs from other igneous rock by being of volcanic origin. Like all rock types, the concept of volcanic rock is artificial, and in nature volcanic rocks grade into hypabyssal and metamorphic rocks and constitute an important element of some sediments and sedimentary rocks. For these reasons, in geology, volcanics and shallow hypabyssal rocks are not always treated as distinct. In the context of Precambrian shield geology, the term "volcanic" is often applied to what are strictly metavolcanic rocks. Volcanic rocks and sediment that form from magma erupted into the air are called "volcaniclastics," and these are technically sedimentary rocks. Volcanic rocks are among the most common rock types on Earth's surface, particularly in the oceans. On land, they are very common at plate boundaries and in flood basalt provinces. It has been estimated t ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
