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Bow Fell
Bowfell (named ''Bow Fell'' on Ordnance Survey maps) is a pyramid-shaped mountain lying at the heart of the English Lake District, in the Southern Fells area. It is the sixth-highest mountain in the Lake District and one of the most popular of the Lake District fells for walkers. It is listed in Alfred Wainwright's 'best half dozen' Lake District fells. Topography The Southern Fells include the highest ground in England, a horseshoe which begins with Scafell and Scafell Pike in the west and then curves around the north of Upper Eskdale to take in Great End, Esk Pike, Bowfell and Crinkle Crags. In addition to Eskdale, Bowfell has a footing in two other well known valleys. It stands at the head of Great Langdale — its east ridge dividing the two branches of Mickleden and Oxendale — while to the north is the Langstrath branch of Borrowdale. From all of these valleys Bowfell presents a striking profile with a conical top resting upon a wider summit plateau. To the north-we ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Scafell Pike
Scafell Pike () is the highest and the most prominent mountain in England, at an elevation of above sea level. It is located in the Lake District National Park, in Cumbria, and is part of the Southern Fells and the Scafell massif. Scafell Pike forms part of the inactive Scafells volcano. Etymology and name history The name ''Scafell'' is believed by some to derive from the Old Norse ''skalli fjall'', meaning either the fell with the shieling or the fell with the bald summit, and is first recorded in 1578 in the corrupted form ''Skallfield''. An alternative derivation is from the Old Norse "skagi", meaning a cape, headland, promontory or peninsula – so giving an etymology that aligns with Skaw in Shetland. It originally referred to Scafell, which neighbours Scafell Pike.Dorothy Wordsworth's ascent of Scafell Pike, 1818, http://www.pastpresented.ukart.com/eskdale/wordsworth1.htm What are now known as Scafell Pike, Ill Crag, and Broad Crag were collectively called either ''t ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Crinkle Crags
Crinkle Crags is a fell in the English Lake District in the county of Cumbria. It forms part of two major rings of mountains, surrounding the valleys of Great Langdale and Upper Eskdale. The name reflects the fell's physical appearance as its summit ridge is a series of five rises and depressions (crinkles) that are very distinctive from the valley floor. In Old English, ''cringol'' means twisted or wrinkled. Topography The nomenclature of the various tops is very confused. Traditional guidebooks tend to rely on what the eye sees and therefore focus attention upon the five ‘crinkles’ of the summit ridge. These are generally referred to as the first to fifth crinkles, but RichardsRichards, Mark: ''Mid-Western Fells'': Collins (2004): starts in the north, BirkettBirkett, Bill: ''Complete Lakeland Fells'': Collins Willow (1994): in the south and WainwrightAlfred Wainwright: ''A Pictorial Guide to the Lakeland Fells'', Book 4: employs both conventions, depending up ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Breccia
Breccia () is a rock composed of large angular broken fragments of minerals or rocks cemented together by a fine-grained matrix. The word has its origins in the Italian language, in which it means "rubble". A breccia may have a variety of different origins, as indicated by the named types including sedimentary breccia, tectonic breccia, igneous breccia, impact breccia, and hydrothermal breccia. A megabreccia is a breccia composed of very large rock fragments, sometimes kilometers across, which can be formed by landslides, impact events, or caldera collapse. Types Breccia is composed of coarse rock fragments held together by cement or a fine-grained matrix. Like conglomerate, breccia contains at least 30 percent of gravel-sized particles (particles over 2mm in size), but it is distinguished from conglomerate because the rock fragments have sharp edges that have not been worn down. These indicate that the gravel was deposited very close to its source area, since otherwise th ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Andesite
Andesite () is a volcanic rock of intermediate composition. In a general sense, it is the intermediate type between silica-poor basalt and silica-rich rhyolite. It is fine-grained (aphanitic) to porphyritic in texture, and is composed predominantly of sodium-rich plagioclase plus pyroxene or hornblende. Andesite is the extrusive equivalent of plutonic diorite. Characteristic of subduction zones, andesite represents the dominant rock type in island arcs. The average composition of the continental crust is andesitic. Along with basalts, andesites are a component of the Martian crust. The name ''andesite'' is derived from the Andes mountain range, where this rock type is found in abundance. It was first applied by Christian Leopold von Buch in 1826. Description Andesite is an aphanitic (fine-grained) igneous rock that is intermediate in its content of silica and low in alkali metals. It has less than 20% quartz and 10% feldspathoid by volume, with at least 65% of the fe ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Sandstone
Sandstone is a clastic sedimentary rock composed mainly of sand-sized (0.0625 to 2 mm) silicate grains. Sandstones comprise about 20–25% of all sedimentary rocks. Most sandstone is composed of quartz or feldspar (both silicates) because they are the most resistant minerals to weathering processes at the Earth's surface. Like uncemented sand, sandstone may be any color due to impurities within the minerals, but the most common colors are tan, brown, yellow, red, grey, pink, white, and black. Since sandstone beds often form highly visible cliffs and other topographic features, certain colors of sandstone have been strongly identified with certain regions. Rock formations that are primarily composed of sandstone usually allow the percolation of water and other fluids and are porous enough to store large quantities, making them valuable aquifers and petroleum reservoirs. Quartz-bearing sandstone can be changed into quartzite through metamorphism, usually related to ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Volcaniclastic
Volcaniclastics are geologic materials composed of broken fragments (clasts) of volcanic rock. These encompass all clastic volcanic materials, regardless of what process fragmented the rock, how it was subsequently transported, what environment it was deposited in, or whether nonvolcanic material is mingled with the volcanic clasts. The United States Geological Survey defines volcaniclastics somewhat more narrowly, to include only rock composed of volcanic rock fragments that have been transported some distance from their place of origin. In the broad sense of the term, volcaniclastics includes pyroclastic rocks such as the Bandelier Tuff; cinder cones and other tephra deposits; the basal and capping breccia that characterize ʻaʻā lava flows; and lahars and debris flows of volcanic origin.Vincent 2000, pp.27-28 Volcaniclastics make up more of the volume of many volcanoes than do lava flows. Volcaniclastics may have contributed as much as a third of all sedimentation in the geolo ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Langdale Pikes
Great Langdale is a valley in the Lake District National Park in North West England, the epithet Great distinguishing it from the neighbouring valley of Little Langdale. Langdale is also the name of a valley in the Howgill Fells, elsewhere in Cumbria. It is a popular location for hikers, climbers, fell-runners, and other outdoor enthusiasts who are attracted by the many fells ringing the head of the valley. Among the best-known features of Great Langdale are the Langdale Pikes, a group of peaks on the northern side of the dale. England's highest mountain, Scafell Pike, can be climbed by a route from Langdale. Langdale has views of, in particular, Dungeon Ghyll Force waterfall, Harrison Stickle, and Pike of Stickle. Great Langdale was an important site during the Neolithic period for producing stone axes and was also one of the centres of the Lakeland slate industry. History Great Langdale is known to archaeologists as the source of a particular type of Neolithic polished s ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Rossett Pike
Rossett Pike is a fell in the English Lake District. It is located at the head of Mickleden, one of two tributary valleys of Great Langdale. Topography A bridge of high ground connects the Southern and Central Fells, running from Bow Fell in the Scafells to Pike of Stickle, one of the Langdale Pikes. Rossett Pike is the high point of this ridge, bordered by Mickleden in the south and Langstrath to the north. A narrow ridge falls north east from Bow Fell, constricted between Angle Tarn and the steep defile of Rossett Gill rising up from Mickleden. Angle Tarn is a feeder of the Langstrath and occupies a circular corrie beneath Hanging Knotts, small trout lurking in its 50 ft depths.Blair, Don: ''Exploring Lakeland Tarns'': Lakeland Manor Press (2003): Beyond this pinch point the ridge steps down over the three tops of Rossett Pike, Buck Pike (1,988 ft) and Black Crag (1,929 ft). All are considered to be part of the same fell by most writers.Alfred Wainwright: ' ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Rossett Hause
Hill passes of the Lake District were originally used by people in one valley travelling to another nearby without having to go many miles around a steep ridge of intervening hills. Historically, in the Lake District of northwest England, travel on foot or by pony was difficult because of the region's steep-sided valleys so tracks across the ridges were created taking the easiest route over passes – often, but not always, via a col. Since Roman times long-distance travel had tended to be along ridges. From the 19th century these passes and ridge routes were brought back into use when recreational hill walking become popular. Forty hill passes within the Lake District National Park are listed here, using criteria for selecting the major routes. Background The Lake District National Park was created in 1951 covering an area of over and, although its population is only 42,000, over 10 million visitors arrive each year, mostly attracted by the lakes and fells. Geology Abou ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cirque
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 down ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Angle Tarn (Langstrath)
Angle Tarn is a tarn to the north of Bowfell in the English Lake District. It drains into Langstrath Beck. This should not be confused with Angle Tarn (Patterdale), a larger lake with the same name about to the south-west, also within the Lake District National Park The Lake District National Park is a national park in North West England that includes all of the central Lake District, though the town of Kendal, some coastal areas, and the Lakeland Peninsulas are outside the park boundary. The area was desi .... References Lakes of the Lake District Allerdale {{Cumbria-geo-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Mountain Pass
A mountain pass is a navigable route through a mountain range or over a ridge. Since many of the world's mountain ranges have presented formidable barriers to travel, passes have played a key role in trade, war, and both Human migration, human and animal migration throughout history. At lower elevations it may be called a hill pass. A mountain pass is typically formed between two volcanic peaks or created by erosion from water or wind. Overview Mountain passes make use of a gap (landform), gap, saddle (landform), saddle, col or notch (landform), notch. A topographic saddle is analogous to the mathematical concept of a saddle surface, with a saddle point marking the highest point between two valleys and the lowest point along a ridge. On a topographic map, passes are characterized by contour lines with an hourglass shape, which indicates a low spot between two higher points. In the high mountains, a difference of between the summit and the mountain is defined as a mountain pas ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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