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East Humboldt Range
The East Humboldt Range is a mountain range in Elko County, Nevada, United States. It is located along the eastern edge of the upper watershed of the Humboldt River, which flows southwest from its source just north of the range. The range reaches a maximum elevation of atop Hole in the Mountain Peak. Most of the range is included within the Ruby Mountains Ranger District of the Humboldt-Toiyabe National Forest. In 1989, the United States Congress passed the Nevada Wilderness Protection Act, establishing over of the range as the East Humboldt Wilderness. The range takes its name from the Humboldt River. The name ultimately is derived from the German naturalist Alexander von Humboldt. The East Humboldts run north-to-south for approximately . To the north are Interstate 80 and the community of Wells, while to the south are Secret Pass, the larger Ruby Range, and Ruby Valley. To the east are Clover Valley and U.S. Route 93, and to the west are Starr Valley and Dennis Fl ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Spruce Mountain (Nevada)
Spruce Mountain is a mountain in Elko County, Nevada, United States. It was named from the spruce timber near the summit. Spruce Mountain ranks twenty-fifth among the most topographically prominent peaks in the state. The summit is at . Spruce Mountain is on a northeast–southwest trending ridge with a parallel Spruce Ridge to the northwest. To the east, a low section of hills connects the mountain to the south end of the Pequop Mountains. US Route 93 passes the southwest end of the mountain. The peak is on public land administered by the Bureau of Land Management and thus has no access restrictions. The western side of the mountain was the site of copper, silver, and lead mining during the late 19th century. The settlement of Sprucemont on the western slope of the mountain supported the mining activity and existed from 1868 through about 1900 and is now a ghost town. Electronics researcher Ralph Hartley Ralph Vinton Lyon Hartley (November 30, 1888 – May 1, 1970) was ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ruby Mountains
The Ruby Mountains (Shoshoni language, Shoshoni: 'Duka Doya', meaning “Snowcapped”) are a mountain range, primarily located within Elko County, Nevada, Elko County with a small extension into White Pine County, Nevada, White Pine County, in Nevada, United States. Most of the range is included within the Humboldt-Toiyabe National Forest. The range reaches a maximum elevation of on the summit of Ruby Dome. To the north is Secret Pass and the East Humboldt Range, and from there the Rubies run south-southwest for about . To the east lies Ruby Valley, and to the west lie Huntington and Lamoille Valleys. The Ruby Mountains are the only range of an introduced bird, the Himalayan snowcock, in North America. The mountain range was named after the garnets found by early explorers. The central core of the range shows extensive evidence of Glacier, glaciation during recent ice ages, including Valley, U-shaped canyons, moraines, Valley#Hanging valleys, hanging valleys, and steeply carved ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Angel Lake
Angel Lake is a glacial tarn in the northern part of the East Humboldt Range, in central Elko County in the northeastern part of the state of Nevada. It is located at approximately , and at an elevation of . It has an area of approximately , and a depth of up to . A scenic highway, State Route 231, climbs from Interstate 80's exit 351 in Wells to the eastern shore of the lake. Located at the base of a steep cirque A (; from the Latin word ) is an amphitheatre-like valley formed by Glacier#Erosion, glacial erosion. Alternative names for this landform are corrie (from , meaning a pot or cauldron) and ; ). A cirque may also be a similarly shaped landform a ..., the lake is surrounded by high cliffs. Greys Peak () rises high to the west, and to the south is a group of pinnacles known as Chimney Rock. Far below and to the east lies Clover Valley and the community of Wells. Angel Lake is one of the most popular recreation sites in the area. On its shore is a 26-site campg ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Nevada State Route 231
State Route 231 (SR 231) is an unsigned state highway in Elko County, Nevada, Elko County, Nevada, United States. Known as Angel Lake Road, the highway connects Angel Lake to the town of Wells, Nevada, Wells. SR 231 is a Nevada Scenic Byway. Route description SR 231 begins at the Angel Lake fee booth, providing access to the lake and nearby picnic and campground areas. From there, the highway heads in a general eastward direction, descending through switchbacks along the east side of the East Humboldt Range. Once traveling about to clear of the mountains, the road turns more sharply to the north. The final sees the route turn more directly eastward to enter the town of Wells. SR 231 comes to its northern terminus at the intersection of Angel Lake Road and Humboldt Avenue (Nevada State Route 223, SR 223) in Wells, just south of Interstate 80 in Nevada, Interstate 80. Angel Lake Road may be closed to travel during winters. History Angel Lake Road became a state highway on July ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cirque (landform)
A (; from the Latin word ) is an amphitheatre-like valley formed by glacial erosion. Alternative names for this landform are corrie (from , meaning a pot or cauldron) and ; ). A cirque may also be a similarly shaped landform arising from fluvial erosion. The concave shape of a glacial cirque is open on the downhill side, while the cupped section is generally steep. Cliff-like slopes, down which ice and glaciated debris combine and converge, form the three or more higher sides. The floor of the cirque ends up bowl-shaped, as it is the complex convergence zone of combining ice flows from multiple directions and their accompanying rock burdens. Hence, it experiences somewhat greater erosion forces and is most often overdeepened below the level of the cirque's low-side outlet (stage) and its down-slope (backstage) valley. If the cirque is subject to seasonal melting, the floor of the cirque most often forms a tarn (small lake) behind a dam, which marks the downstream limit of the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Arete (landform)
() is a concept in ancient Greek thought that refers to "excellence" of any kind—especially a person or thing's "full realization of potential or inherent function." The term may also refer to excellence in " moral virtue." The concept was also occasionally personified as a minor goddess, Arete (not to be confused with the mythological Queen Arete), who, together with sister Homonoia, formed the ("Exacters of Justice"). In its earliest appearance in Greek, this notion of excellence was bound up with the notion of the fulfillment of purpose or function: living up to one's potential. A person of is of the highest effectiveness; such a person uses all of their faculties—strength, bravery, and wit—to achieve real results. In the Homeric world, involves all of the abilities and potentialities available to humans. Though particularly associated with "manly" qualities, the Homeric usage of the term was not necessarily gender-specific, as Homer applied the term to both th ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Glacial Horn
A pyramidal peak, sometimes called a glacial horn in extreme cases, is an angular, sharply pointed mountain peak which results from the cirque erosion due to multiple glaciers diverging from a central point. Pyramidal peaks are often examples of nunataks. Formation Glaciers, typically forming in drainages on the sides of a mountain, develop bowl-shaped basins called cirques (sometimes called 'corries' – from Scottish Gaelic ʰəɾə(a bowl) – or s). Cirque glaciers have rotational sliding that abrades the floor of the basin more than walls and that causes the bowl shape to form. As cirques are formed by glaciation in an alpine environment, the headwall and ridges between parallel glaciers called arêtes become more steep and defined. This occurs due to freeze/thaw and mass wasting beneath the ice surface. It is widely held that a common cause for headwall steepening and extension headward is the crevasses known as bergschrund that occur between the moving ice and the he ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Moraine
A moraine is any accumulation of unconsolidated debris (regolith and Rock (geology), rock), sometimes referred to as glacial till, that occurs in both currently and formerly glaciated regions, and that has been previously carried along by a glacier or ice sheet. It may consist of partly rounded particles ranging in size from boulders (in which case it is often referred to as boulder clay) down to gravel and sand, in a groundmass of finely-divided clayey material sometimes called glacial flour. Lateral moraines are those formed at the side of the ice flow, and terminal moraines are those formed at the foot, marking the maximum advance of the glacier. Other types of moraine include ground moraines (till-covered areas forming sheets on flat or irregular topography) and medial moraines (moraines formed where two glaciers meet). Etymology The word ''moraine'' is borrowed from French language, French , which in turn is derived from the Savoyard dialect, Savoyard Italian ('mound of e ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Glaciated Valley
U-shaped valleys, also called trough valleys or glacial troughs, are formed by the process of glaciation. They are characteristic of mountain glaciation in particular. They have a characteristic U shape in cross-section, with steep, straight sides and a flat or rounded bottom (by contrast, valleys carved by rivers tend to be V-shaped in cross-section). Glaciated valleys are formed when a glacier travels across and down a slope, carving the valley by the action of scouring. When the ice recedes or thaws, the valley remains, often littered with small boulders that were transported within the ice, called glacial till or glacial erratic. Examples of U-shaped valleys are found in mountainous regions throughout the world including the Andes, Alps, Caucasus Mountains, Himalaya, Rocky Mountains, New Zealand and the Scandinavian Mountains. They are found also in other major European mountains including the Carpathian Mountains, the Pyrenees, the Rila and Pirin mountains in Bulgaria, and ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ice Age
An ice age is a long period of reduction in the temperature of Earth's surface and atmosphere, resulting in the presence or expansion of continental and polar ice sheets and alpine glaciers. Earth's climate alternates between ice ages, and greenhouse periods during which there are no glaciers on the planet. Earth is currently in the ice age called Quaternary glaciation. Individual pulses of cold climate within an ice age are termed '' glacial periods'' (''glacials, glaciations, glacial stages, stadials, stades'', or colloquially, ''ice ages''), and intermittent warm periods within an ice age are called '' interglacials'' or ''interstadials''. In glaciology, the term ''ice age'' is defined by the presence of extensive ice sheets in the northern and southern hemispheres. By this definition, the current Holocene epoch is an interglacial period of an ice age. The accumulation of anthropogenic greenhouse gases is projected to delay the next glacial period. History of research ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Glaciation
A glacial period (alternatively glacial or glaciation) is an interval of time (thousands of years) within an ice age that is marked by colder temperatures and glacier advances. Interglacials, on the other hand, are periods of warmer climate between glacial periods. The Last Glacial Period ended about 15,000 years ago. The Holocene is the current interglacial. A time with no glaciers on Earth is considered a greenhouse climate state. Quaternary Period Within the Quaternary, which started about 2.6 million years before present, there have been a number of glacials and interglacials. At least eight glacial cycles have occurred in the last 740,000 years alone. Changes in atmospheric and associated radiative forcing were among the primary drivers of globally cold glacial and warm interglacial climates, with changes in ocean physical circulation, biological productivity and seawater acid-base chemistry likely causing most of the recorded changes Penultimate Glacial Period The ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Escarpment
An escarpment is a steep slope or long cliff that forms as a result of faulting or erosion and separates two relatively level areas having different elevations. Due to the similarity, the term '' scarp'' may mistakenly be incorrectly used interchangeably with ''escarpment.'' ''Escarpment'' referring to the margin between two landforms, and ''scarp'' referring to a cliff or a steep slope. In this usage an escarpment is a ridge which has a gentle slope on one side and a steep scarp on the other side. More loosely, the term ''scarp'' also describes a zone between a coastal lowland and a continental plateau which shows a marked, abrupt change in elevation caused by coastal erosion at the base of the plateau. Formation and description Scarps are generally formed by one of two processes: either by differential erosion of sedimentary rocks, or by movement of the Earth's crust at a geologic fault. The first process is the more common type: the escarpment is a transition from one seri ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
