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Arête
An arête ( ) is a narrow ridge of rock which separates two valleys. It is typically formed when two glaciers erode parallel U-shaped valleys. Arêtes can also form when two glacial cirques erode headwards towards one another, although frequently this results in a saddle-shaped pass, called a col. The edge is then sharpened by freeze-thaw weathering, and the slope on either side of the arête steepened through mass wasting events and the erosion of exposed, unstable rock. The word ''arête'' () is actually French for "edge" or "ridge"; similar features in the Alps are often described with the German equivalent term ''Grat''. Where three or more cirques meet, a pyramidal peak is created. Cleaver A ''cleaver'' is a type of arête that separates a unified flow of glacial ice from its uphill side into two glaciers flanking, and flowing parallel to, the ridge. ''Cleaver'' gets its name from the way it resembles a meat cleaver slicing meat into two parts. A cleaver may be tho ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Striding Edge
Helvellyn (; possible meaning: ''pale yellow moorland'') is a mountain in the English Lake District, the highest point of the Helvellyn range, a north–south line of mountains to the north of Ambleside, between the lakes of Thirlmere and Ullswater. Helvellyn is the third-highest point both in England and in the Lake District, and access to Helvellyn is easier than to the two higher peaks of Scafell Pike and Scafell. The scenery includes three deep glacial coves and two sharp-topped ridges on the eastern side (Striding Edge and Swirral Edge). Helvellyn was one of the earliest fells to prove popular with walkers and explorers; beginning especially in the later 18th century. Among the early visitors to Helvellyn were the poets Samuel Taylor Coleridge and William Wordsworth, both of whom lived nearby at one period. Many routes up the mountain are possible so that it may be approached from all directions. However, traversing the mountain is not without dangers; over the last two h ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Crib Goch
Crib Goch is described as a "knife-edged" arête in the Snowdonia National Park in Gwynedd, Wales. The name means "red ridge" in the Welsh language. The highest point on the arête is above sea level. All routes which tackle Crib Goch are considered mountaineering routes in winter or scrambles in summer—meaning that they must cross "graded territory" as defined in Steve Ashton's ''Scrambles in Snowdonia''.Steve Ashton, Scrambles in Snowdonia, (Cicerone Press, 1992) The easiest of these lines (the ‘bad step’ part of the route) is given a scrambling grade of Grade 1 (the most difficult being Grade 3—routes more difficult than Grade 3 are considered rock climbs). Route The classic traverse of Crib Goch from East to West leads up from the Pyg track to a ‘bad step’, where hands and feet are both needed briefly. It is followed by ascent to the arête, before tackling three rock-pinnacles to a grassy col at Bwlch Coch. This first part of the ridge is exposed with ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Glacier
A glacier (; ) is a persistent body of dense ice that is constantly moving under its own weight. A glacier forms where the accumulation of snow exceeds its ablation over many years, often centuries. It acquires distinguishing features, such as crevasses and seracs, as it slowly flows and deforms under stresses induced by its weight. As it moves, it abrades rock and debris from its substrate to create landforms such as cirques, moraines, or fjords. Although a glacier may flow into a body of water, it forms only on land and is distinct from the much thinner sea ice and lake ice that form on the surface of bodies of water. On Earth, 99% of glacial ice is contained within vast ice sheets (also known as "continental glaciers") in the polar regions, but glaciers may be found in mountain ranges on every continent other than the Australian mainland, including Oceania's high-latitude oceanic island countries such as New Zealand. Between latitudes 35°N and 35°S, glaciers occur o ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
MacGillycuddy's Reeks
, photo=MacGuillycuddy's Reeks.jpg , photo_caption= , country=Ireland , country1= , location = County Kerry , region = Munster , region_type = Provinces of Ireland , parent= , border= , length_km=19 , length_orientation=East–West , width_km= , width_orientation= , highest= Carrauntoohil , elevation_m=1038.6 , coordinates = , translation = the black stacks , language = Irish , range_coordinates = , geology= , period=Devonian , orogeny = , map=island of Ireland , map_caption=Location of the MacGillycuddy's Reeks , type= Purple sandstone & siltstone , topo = OSI ''Discovery'' 78 MacGillycuddy's Reeks () is a sandstone and siltstone mountain range in the Iveragh Peninsula in County Kerry, Ireland. Stretching , from the Gap of Dunloe in the east, to Glencar in the west, the Reeks is Ireland's highest mountain range, and includes most of the highest peaks and sharpest ridges in Ireland, and the only peaks on the island over in height. Near ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Pyramidal Peak
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 t ... [...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 Scottish Gaelic , 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 dow ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Beenkeragh Ridge
Beenkeragh or Benkeeragh () is the second-highest peak in Ireland, at , on both the Arderin and Vandeleur-Lynam lists. It is part of the MacGillycuddy's Reeks range in County Kerry. Beenkeragh also gives its name the infamous ''Beenkeragh Ridge'', the narrow rocky arete between Beenkeragh and Carrauntoohil, Ireland's highest mountain. Geography Beenkeragh lies to the north of Carrauntoohil ., and is part of the MacGillycuddy's Reeks range in County Kerry. Beenkeragh is joined to Carrauntoohil by a very narrow rocky ridge, or arete, known as the ''Beenkeragh Ridge''. In the middle of the ''Beenkeragh Ridge'' is another other summit called, The Bones () . Beenkeragh is the 179th-highest mountain in Britain and Ireland on the Simm classification. Beenkeragh is regarded by the Scottish Mountaineering Club ("SMC") as one of 34 Furths, which is a mountain above in elevation, and meets the other SMC criteria for a Munro (e.g. "sufficient separation"), but which is outside of ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Clouds Rest
Clouds Rest is a mountain in Yosemite National Park east northeast of Yosemite Village, California. Although there are many peaks in the park having far greater elevation, the proximity of Clouds Rest to the valley gives it a very high degree of visual prominence. Geography The summit can be reached by a trail hike from Tioga Pass Road or a trail hike from Happy Isles by way of Little Yosemite Valley. There are also several technical routes available. Clouds Rest is an arête, a thin, almost knife-like, ridge of rock formed when glaciers eroded away solid rock to form Tenaya Canyon and Little Yosemite Valley. The northwest face, mostly solid granite, rises above Tenaya Creek Tenaya (died 1853) was a leader of the Ahwahnechee people in Yosemite Valley, California. Background Tenaya's father was a leader of the Ahwahnechee people (or Awahnichi). The Ahwahneechee had become a tribe distinct from the other tribes in th .... History Lafayette H. Bunnell, a medical doctor wi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Garden Wall
The Garden Wall is a steep alpine area within Glacier National Park well known during the summer months to be heavily covered in dozens of species of flowering plants and shrubs. Located along the west side of the Continental divide and extending northward from Logan Pass, the Garden Wall can be traversed via the popular Highline Trail and for a distance of over to the Granite Park Chalet. The Going-to-the-Sun Road also passes through portions of the Garden Wall northwest of Logan Pass. The Weeping Wall is a short stretch of the Going-to-the-Sun Road where water cascades over the Garden Wall to the roadway below. The Garden Wall is an arête An arête ( ) is a narrow ridge of rock which separates two valleys. It is typically formed when two glaciers erode parallel U-shaped valleys. Arêtes can also form when two glacial cirques erode headwards towards one another, although frequ ... or rock spine that separates the Many Glacier region of the park from Lake McDonald va ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Crib Goch, Snowdonia, Wales - August 2007
Crib may refer to: *Bach (New Zealand), a type of modest beach house, called a crib in the southern half of the South Island e.g. Otago and Southland *Box crib, a wooden frame used to stabilise a heavy object during a rescue, jacking, construction, or moving operation *Cheat sheet or crib sheet, a concise set of notes for quick reference * Ciani Crib, a single seat, high performance glider *Corn crib, a granary for drying and storing corn *Crib (cryptanalysis), a sample of known plaintext in codebreaking * Crib barn, a popular type of barn found throughout the U.S. south and southeast regions *Crib bridge, a bridge built of logs or stones stacked like log cabins *Crib Goch, a ‘knife-edged’ arête in Gwynedd, Wales *Crib lighthouse, a type of lighthouse whose structure rests on a concrete or masonry foundation supported with wooden beams *Crib pier, a type of pier built with supporting columns constructed like log cabins *Cribbage, a card game *Cribbing (horse), a bad habit of so ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ridge
A ridge or a mountain ridge is a geographical feature consisting of a chain of mountains or hills that form a continuous elevated crest for an extended distance. The sides of the ridge slope away from the narrow top on either side. The lines along the crest formed by the highest points, with the terrain dropping down on either side, are called the ridgelines. Ridges are usually termed hills or mountains as well, depending on size. Smaller ridges, especially those leaving a larger ridge, are often referred to as spurs. Types There are several main types of ridges: ;Dendritic ridge: In typical dissected plateau terrain, the stream drainage valleys will leave intervening ridges. These are by far the most common ridges. These ridges usually represent slightly more erosion resistant rock, but not always – they often remain because there were more joints where the valleys formed or other chance occurrences. This type of ridge is generally somewhat random in orientation, ofte ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Half Dome
Half Dome is a granite dome at the eastern end of Yosemite Valley in Yosemite National Park, California. It is a well-known rock formation in the park, named for its distinct shape. One side is a sheer face while the other three sides are smooth and round, making it appear like a dome cut in half. The granite crest rises more than above the valley floor. Geology The impression from the valley floor that this is a round dome that has lost its northwest half, is just an illusion. From Washburn Point, Half Dome can be seen as a thin ridge of rock, an arête, that is oriented northeast–southwest, with its southeast side almost as steep as its northwest side except for the very top. Although the trend of this ridge, as well as that of Tenaya Canyon, is probably controlled by master joints, 80 percent of the northwest "half" of the original dome may well still be there. Ascents As late as the 1870s, Half Dome was described as "perfectly inaccessible" by Josiah Whitney of the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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