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Mweelrea Mountains
Mweelrea (; ) is a mountain on the Atlantic coast of County Mayo, Ireland. Rising to , it is the highest mountain in the western province of Connacht, and is noted for its southeastern cliff-lined corries, and its views. Mweelrea overlooks Killary Harbour and is at the heart of a "horseshoe-shaped" massif that includes the peaks of Ben Lugmore and Ben Bury. The massif is called the Mweelrea Mountains or the Mweelrea Range. Mweelrea is also the 26th-highest peak in Ireland on the Arderin list, and the 34th-highest on the Vandeleur-Lynam list.Mountainviews, (September 2013), "A Guide to Ireland's Mountain Summits: The Vandeleur-Lynams & the Arderins", Collins Books, Cork, Geology The geology of what is known as the '' Mweelrea Formation'' is very different from that of the Twelve Bens, on the other side of Killary Harbour. At a summary level, the ''Mweelrea Formation'' consists of Ordovician period sandstones originally deposited on large alluvial fans, and distally‐equiva ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ben Lugmore
Ben Lugmore () at is the 29th-highest peak in Ireland on the Lists of mountains in Ireland#Arderins, Arderin scale, and the 37th-highest peak on the Lists of mountains in Ireland#Vandeleur-Lynams, Vandeleur-Lynam scale. It is in a horseshoe-shaped massif that includes the slightly higher peak of Mweelrea at , the highest mountain in the Irish province of Connacht. The massif is between Killary Harbour and Doo Lough (Mayo), Doo Lough, in County Mayo. The peak is noted for its long summit ridge that forms a deep cliff-lined headwall around the cirque, corrie of Lug More (); the corrie includes a feature known as ''The Ramp'' that climbers use to access the summit ridge, as well as rock climbs and winter ice climbs. While the peak can be accessed via a 3-hour walk from the corrie below, it is also summited by way of the 6-7 hour Mweelrea Horseshoe, described as a "top three" mountain walk in Ireland. Naming Irish academic Paul Tempan lists Ben Lugmore as an anglicisation of th ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Massif
A massif () is a principal mountain mass, such as a compact portion of a mountain range, containing one or more summits (e.g. France's Massif Central). In mountaineering literature, ''massif'' is frequently used to denote the main mass of an individual mountain. As a purely scientific term in geology, however, a "massif" is separately and more specifically defined as a section of a planet's crust (geology), crust that is demarcated by geologic fault, faults or lithospheric flexure, flexures. In the plate tectonics, movement of the crust, a massif tends to retain its internal structure while being displaced as a whole. A massif is a smaller structural unit than a tectonic plate and is considered the fourth-largest driving force in geomorphology. The word "massif" originates from French (in which the word also means "massive"), where it is used to refer to a large mountain mass or compact group of connected mountains forming an independent portion of a range. The Cydonia (regi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Topographic Prominence
In topography, prominence or relative height (also referred to as autonomous height, and shoulder drop in US English, and drop in British English) measures the height of a mountain or hill's summit relative to the lowest contour line encircling it but containing no higher summit within it. It is a measure of the independence of a summit. The key col ("saddle") around the peak is a unique point on this contour line and the ''parent peak'' (if any) is some higher mountain, selected according to various criteria. Definitions The prominence of a peak is the least drop in height necessary in order to get from the summit to any higher terrain. This can be calculated for a given peak in the following manner: for every path connecting the peak to higher terrain, find the lowest point on the path; the ''key col'' (or ''highest saddle (landform), saddle'', or ''linking col'', or ''link'') is defined as the highest of these points, along all connecting paths; the prominence is the differ ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Bundorragha River
Killary Harbour or Killary Fjord () is a fjord or fjard on the west coast of Ireland, in northern Connemara. To its north is County Mayo and the mountains of Mweelrea and Ben Gorm; to its south is County Galway and the Maumturk Mountains. Structure The flooded valley is long, and in the centre over deep; the sea level is higher outside its mouth, as is normal for a fjord.Collins Press, Cork, Ireland - Ireland's Coastline: Exploring its Nature and Heritage - Nairn, Richard, 2007: "the long, narrow fjord of Killary Harbour, which forms the boundary between the counties of Mayo and Galway. ... only a few hundred metres wide. A glacier must have scoured the bottom as it moved towards the sea, taking large volumes of rock and gravel with it. Just outside the entrance, the depth reduces dramatically and there are a number of rocky islands giving a profile that is typical of the fjords of Scandinavia." For nearly half its length, it runs south east from the Atlantic, and then it cro ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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 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 overdeepening, 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 (lake), tarn (small lake) behind a d ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Irish Placenames Database
Irish commonly refers to: * Someone or something of, from, or related to: ** Ireland, an island situated off the north-western coast of continental Europe ***Éire, Irish language name for the island and the sovereign state *** Erse (other), Scots language name for the Irish language or Irish people ** Republic of Ireland, a sovereign state ** Northern Ireland, a constituent unit of the United Kingdom of Great Britain and Northern Ireland * Irish language, a Celtic Goidelic language of the Indo-European language family spoken in Ireland * Irish English, set of dialects of the English language native to Ireland * Irish people, people of Irish ethnicity Irish may also refer to: Places * Irish Creek (Kansas), a stream in Kansas * Irish Creek (South Dakota), a stream in South Dakota * Irish Lake, Watonwan County, Minnesota * Irish Sea, the body of water which separates the islands of Ireland and Great Britain People * Irish (surname), a list of people * William Irish, pse ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Townland
A townland (; Ulster-Scots: ''toonlann'') is a traditional small land division used in Ireland and in the Western Isles of Scotland, typically covering . The townland system is of medieval Gaelic origin, predating the Norman invasion, and most have Irish-derived names. However, some townland names and boundaries come from Norman manors, plantation divisions, or later creations of the Ordnance Survey.Connolly, S. J., ''The Oxford Companion to Irish History, page 577. Oxford University Press, 2002. ''Maxwell, Ian, ''How to Trace Your Irish Ancestors'', page 16. howtobooks, 2009. Townlands cover the whole island of Ireland, and the total number of inhabited townlands in Ireland was 60,679 in 1911. The total number recognised by the Placenames Database of Ireland as of 2014 was 61,098, including uninhabited townlands. Etymology The term "townland" in English is derived from the Old English word ''tūn'', denoting an enclosure. The term describes the smallest unit of land di ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Doo Lough (Mayo)
Doo Lough () is a freshwater lake in the west of Ireland. It is located in southwest County Mayo on the Murrisk peninsula. Geography Doo Lough measures about long and wide. It lies about southwest of Westport, County Mayo, Westport near the village of Delphi, County Mayo, Delphi. The lake runs in a narrow northwest to southeast direction, and is overlooked by the long ridge of Ben Lugmore , on its southwest shores, and by Barrclashcame on its northeast shores. At its southeast head, lies the massif of Ben Gorm . A notable feature on its northwestern head it the deep Cirque, corrie of Lug More (or ), from which the Glencullin River feeds into the neighboring Lough Glencullin (the bottom of the corrie is also called the Glencullin valley). Surrounding the corrie is the long ridge of Ben Lugmore and its several subsidiary summits, Ben Lugmore East Top , and Ben Lugmore West Top ; while cutting across the headwall (from bottom left to upper right), is grenn grassy feature kno ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Fjord
In physical geography, a fjord (also spelled fiord in New Zealand English; ) is a long, narrow sea inlet with steep sides or cliffs, created by a glacier. Fjords exist on the coasts of Antarctica, the Arctic, and surrounding landmasses of the northern and southern hemispheres. Norway's coastline is estimated to be long with its nearly 1,200 fjords, but only long excluding the fjords. Formation A true fjord is formed when a glacier cuts a U-shaped valley by ice segregation and abrasion of the surrounding bedrock. According to the standard model, glaciers formed in pre-glacial valleys with a gently sloping valley floor. The work of the glacier then left an overdeepened U-shaped valley that ends abruptly at a valley or trough end. Such valleys are fjords when flooded by the ocean. Thresholds above sea level create freshwater lakes. Glacial melting is accompanied by the rebounding of Earth's crust as the ice load and eroded sediment is removed (also called isostasy or gla ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Geological Journal
The ''Geological Journal'' is a monthly peer-reviewed scientific journal covering all aspects of geology. It is published by Wiley in affiliation with Northwest University and the editors-in-chief are Ian D. Somerville (University College Dublin) and Yunpeng Dong (Northwest University). The journal was established in 1951. Abstracting and indexing The journal is abstracted and indexed in: According to the ''Journal Citation Reports'', the journal has a 2022 impact factor The impact factor (IF) or journal impact factor (JIF) of an academic journal is a type of journal ranking. Journals with higher impact factor values are considered more prestigious or important within their field. The Impact Factor of a journa ... of 1.8. References External links * {{authority control Geology journals Monthly journals Wiley (publisher) academic journals Academic journals established in 1951 English-language journals ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Alluvial Fans
An alluvial fan is an accumulation of sediments that fans outwards from a concentrated source of sediments, such as a narrow canyon emerging from an escarpment. They are characteristic of mountainous terrain in arid to Semi-arid climate, semiarid climates, but are also found in more humid environments subject to intense rainfall and in areas of modern glaciation. They range in area from less than to almost . Alluvial fans typically form where a flow of sediment or rocks emerge from a confined channel and are suddenly free to spread out in many directions. For example, many alluvial fans form when steep mountain valleys meet a flat plain. The transition from a narrow channel to a wide open area reduces the carrying capacity of flow and results in Deposition (geology), deposition of sediments. The flow can take the form of infrequent debris flows like in a landslide, or can be carried by an intermittent stream or creek. The reduction of flow is key to the formation of alluvial ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Sandstones
Sandstone is a clastic sedimentary rock composed mainly of sand-sized (0.0625 to 2 mm) silicate grains, cemented together by another mineral. Sandstones comprise about 20–25% of all sedimentary rocks. Most sandstone is composed of quartz or feldspar, because they are the most resistant minerals to the weathering processes at the Earth's surface. Like uncemented sand, sandstone may be imparted any color by impurities within the minerals, but the most common colors are tan, brown, yellow, red, grey, pink, white, and black. Because sandstone beds can form highly visible cliffs and other topographic features, certain colors of sandstone have become strongly identified with certain regions, such as the red rock deserts of Arches National Park and other areas of the American Southwest. Rock formations 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 petro ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
