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Sweetwater Mountains
The Sweetwater Mountains (highest peak: Mount Patterson ) are a small mountain range in northern Mono County, California and western Lyon County, Nevada, separating the West Walker River from the East Walker River. Most of the range is only accessible by four wheel drive vehicle, on foot, or pack animal. Most of the range is contained in the Toiyabe National Forest. The place name appears on the 1874 California Geologic Survey map of California and Nevada. The ghost towns of Belfort and Clinton are small gold mining camps on the southeastern slope of Mt. Patterson. The Sweetwater post office existed on the eastern boundary of the range in the 1920s. The Fales post office existed on the southwestern boundary in 1877. Both Clinton and Belfort had post offices in the 1880s. There are several other inactive small gold mining camps and gold mines in the range, including Boulder Flat, Montague Mine, Angelo Mission Mine, Kentuck Mine, Frederick Mine, Longstreet Mine, Lilly Mine, D ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Sonora Pass
Sonora Pass (el. 9,624 ft. / 2,933 m.) is a mountain pass in the Sierra Nevada in California. It is the second-highest in California and in the Sierra Nevada. lower by 321 ft. (about 98 m.) than Tioga Pass to the south. State Route 108 traverses the pass, as does the Pacific Crest Trail. Description The pass connects the communities of Sonora to the west and Bridgeport to the east. Like Ebbetts Pass to the north and Tioga Pass to the south, the highway closes during winter, generally between November and May, due to snow accumulation. The highway over the pass is extremely steep (exceeding 8% for most of the traverse, and up to 26% grades in some locations), narrow and winding between Kennedy Meadows on the west side and Leavitt Meadows on the east. The route is not recommended for vehicles or vehicle combinations that are unusually wide, heavy or long. The Pacific Crest Trail, a 2,650 mile (4,240 km) long National Scenic Trail, crosses Highway 108 at Sonora Pa ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Mountain Ranges Of Northern 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] |
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] |
East Sister (Nevada)
East Sister is the highest independent mountain located completely within Lyon County in Nevada, United States. It is located within the Sweetwater Mountains The Sweetwater Mountains (highest peak: Mount Patterson ) are a small mountain range in northern Mono County, California and western Lyon County, Nevada, separating the West Walker River from the East Walker River. Most of the range is only acce ... just a short distance north of the highest point in Lyon County on the northeast ridge of Middle Sister. The peak is within the Humboldt-Toiyabe National Forest. References Mountains of Nevada Landforms of Lyon County, Nevada Humboldt–Toiyabe National Forest {{LyonCountyNV-geo-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Middle Sister (California)
Middle Sister is a mountain in the Sweetwater Mountains The Sweetwater Mountains (highest peak: Mount Patterson ) are a small mountain range in northern Mono County, California and western Lyon County, Nevada, separating the West Walker River from the East Walker River. Most of the range is only acce ... of Mono County, California, United States. It is located within the Humboldt-Toiyabe National Forest. The northeast ridge crosses into Lyon County in Nevada, making that location the Lyon County's highest point at about . References Mountains of Mono County, California Landforms of Lyon County, Nevada Mountains of Northern California {{MonoCountyCA-geo-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Rhyolite
Rhyolite ( ) is the most silica-rich of volcanic rocks. It is generally glassy or fine-grained (aphanitic) in texture, but may be porphyritic, containing larger mineral crystals (phenocrysts) in an otherwise fine-grained groundmass. The mineral assemblage is predominantly quartz, sanidine, and plagioclase. It is the extrusive equivalent to granite. Rhyolitic magma is extremely viscous, due to its high silica content. This favors explosive eruptions over effusive eruptions, so this type of magma is more often erupted as pyroclastic rock than as lava flows. Rhyolitic ash-flow tuffs are among the most voluminous of continental igneous rock formations. Rhyolitic tuff has been extensively used for construction. Obsidian, which is rhyolitic volcanic glass, has been used for tools from prehistoric times to the present day because it can be shaped to an extremely sharp edge. Rhyolitic pumice finds use as an abrasive, in concrete, and as a soil amendment. Description Rhyolite i ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Little Walker Caldera
Little Walker Caldera is a depression in the eastern Sierra Nevada in California that is adjacent to the Sweetwater Mountains. The caldera is very large, measuring about in diameter. The caldera is named for the Little Walker River. U.S. Route 395 in California crosses the Northern boundary of the caldera, just west of the Devil's Gate Pass. California State Route 108 follows more of the northern boundary of the caldera. Little Walker Caldera last produced a major eruption about 9 million years ago. Andesitic lava and tuff from the series of three eruptive events are found several hundred feet thick as far away as Antelope Valley, Mono County, north, Bridgeport Valley to the south, and Sonora to the wes The lava flows near Sonora are readily visible from California State Route 108 State Route 108 (SR 108) is a state highway in the U.S. state of California that runs from the Central Valley and across the Sierra Nevada via the Sonora Pass. It generally runs northeast from ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Volcanic
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 plate ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Pluton
In geology, an igneous intrusion (or intrusive body or simply intrusion) is a body of intrusive igneous rock that forms by crystallization of magma slowly cooling below the surface of the Earth. Intrusions have a wide variety of forms and compositions, illustrated by examples like the Palisades Sill of New York and New Jersey; the Henry Mountains of Utah; the Bushveld Igneous Complex of South Africa; Shiprock in New Mexico; the Ardnamurchan intrusion in Scotland; and the Sierra Nevada Batholith of California. Because the solid country rock into which magma intrudes is an excellent insulator, cooling of the magma is extremely slow, and intrusive igneous rock is coarse-grained (phaneritic). Intrusive igneous rocks are classified separately from extrusive igneous rocks, generally on the basis of their mineral content. The relative amounts of quartz, alkali feldspar, plagioclase, and feldspathoid is particularly important in classifying intrusive igneous rocks. Intrusions ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Pack Animal
A pack animal, also known as a sumpter animal or beast of burden, is an individual or type of working animal used by humans as means of transporting materials by attaching them so their weight bears on the animal's back, in contrast to draft animals which pull loads but do not carry them. Traditional pack animals are diverse including camels, goats, yaks, reindeer, water buffaloes, and llamas as well as the more familiar pack animals like dogs, horses, donkeys, and mules. Nomenclature The term ''pack animal'' is traditionally used in contrast to ''draft animal'', which is a working animal that typically pulls a load behind itself (such as a plow, a cart, a sled or a heavy log) rather than carrying cargo directly on its back. For instance, sled dogs pull loads but do not normally carry them, while working elephants have been used for centuries to haul logs out of forests. The term ''pack animal'' can also refer to animals which naturally live and hunt in packs in the wild, such ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
California
California is a U.S. state, state in the Western United States, located along the West Coast of the United States, Pacific Coast. With nearly 39.2million residents across a total area of approximately , it is the List of states and territories of the United States by population, most populous U.S. state and the List of U.S. states and territories by area, 3rd largest by area. It is also the most populated Administrative division, subnational entity in North America and the 34th most populous in the world. The Greater Los Angeles area and the San Francisco Bay Area are the nation's second and fifth most populous Statistical area (United States), urban regions respectively, with the former having more than 18.7million residents and the latter having over 9.6million. Sacramento, California, Sacramento is the state's capital, while Los Angeles is the List of largest California cities by population, most populous city in the state and the List of United States cities by population, ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
