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75-778: One small hamlet , Birkerthwaite ( grid reference SD179982 ), lies in a shallow valley near the centre of the fell, but other than this the only human habitations are scattered hill farms. A road crosses the fell between Eskdale Green and Ulpha , in the Duddon Valley . Apart from Green Crag , other notable high points on the fell include: Crook Crag (469m, grid reference SD200987 ); White How (444m, SD204974 ); Great Worm Crag (427m, SD194969 ); Iron Crag (408m, SD211972 ); Kepple Crag (328m, SD198999 ); Great Crag (323m, SD187978 ); Rough Crag (319m, SD162977 ); Water Crag (305m, SD154975 ); and Brantrake Crags (259m, SD148982 ). Between these points are

150-565: A buurtschap officially is a part of another place (e.g. Bartlehiem , part of Wyns ). In Pakistan, a hamlet is called a gaaon گاؤں or mauza موضع in Urdu , giraaan گراں or pind پنڈ in Punjabi , and kalay کلې in Pashto . It is almost synonymous to 'village'. In Poland, the law recognises a number of different kinds of rural settlement . Przysiółek (which can be translated as "hamlet") refers to

225-404: A dorp (village), no infrastructure (i.e. no inn, no school, no store) and contains often only one street, bearing the same name. The houses and farms of a gehucht or a buurtschap can be scattered. Though there are strong similarities between a gehucht and buurtschap , the words are not interchangeable. A gehucht officially counts as an independent place of residence (e.g. Wateren ), while

300-407: A blanket of uniform thickness across terrain. Column collapse results in a more spectacular and destructive form of transport, which takes the form of pyroclastic flows and surges that characteristically are poorly sorted and pool in low terrain. Surge deposits sometimes show sedimentary structures typical of high-velocity flow, such as dunes and antidunes . Volcanic ash already deposited on

375-426: A cluster of farms. Osada (which is typically translated as "settlement" but also can be translated as "hamlet") includes smaller settlements especially differing by type of buildings or inhabited by population connected with some place or workplace (like mill settlements, forest settlements, fishing settlements, railway settlements, former State Agricultural Farm settlements). They can be an independent settlement, or

450-454: A distinction was often that selo has a church and derevnia has not. The once common Russian word хутор ( khutor ) for the smallest type of rural settlement (arguably closest in nature to the English hamlet) is now mostly obsolete. The state of USSR wanted to have some form of basic infrastructure and central authority at each and every settlement. Obviously, this is the opposite of a hamlet -

525-451: A few houses in the rural outskirts of a village. In Ukraine, a very small village such as a hamlet usually is called a selyshche or khutir . There also existed such places like volia , sloboda , huta , buda , and others. In England , the word hamlet (having the French origin given at the top of this article) means (in current usage) simply a small settlement, maybe of

600-414: A few houses or farms, smaller than a village. However, traditionally and legally, it means a village or a town without a church, although hamlets are recognised as part of land use planning policies and administration. Historically, it may refer to a secondary settlement in a civil parish , after the main settlement (if any); such an example is the hamlet of Chipping being the secondary settlement within

675-894: A hamlet is called a "bigha" . In state of Karnataka , a hamlet is known by different names like Palya , Hadi (Haadi), Keri , and Padi (Paadi). In olden days, the human population of hamlet was less than Halli (Village) or Ooru (Uru). But in the 20th century with tremendous increase in population, some of these hamlets have become villages, towns, cities or merged with them. All over Indonesia , hamlets are translated as "small village", desa or kampung . They are known as dusun in Central Java and East Java, banjar in Bali, jorong or kampuang in West Sumatra . The Dutch words for hamlet are gehucht or buurtschap . A gehucht or buurtschap has, compared to

750-430: A hamlet lacks a compact core settlement and lacks a central building such as a church or inn. However, some hamlets ( Kirchwiler ) may have grown up as an unplanned settlement around a church. There is no population limit that defines a hamlet and some hamlets have a larger population than some of the smallest municipalities. Generally there are no street names in a hamlet; rather, addresses are given by hamlet name and

825-506: A larger entity (e.g. parish or municipality ). In Spain, the hamlet is one of the categories in the official gazetteer of population entities. In the Royal Order and Instruction of the 8 of March 1930, issued for the elaboration of the Annual gazetteer, the hamlet ( aldea ) is defined as the population entity with the smallest population and neighbourhood, usually more disseminated than

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900-581: A larger municipality (similar to civil townships in the United States), such as many communities within the single-tier municipalities of Ontario , Alberta 's specialized and rural municipalities, and Saskatchewan 's rural municipalities. Canada's two largest hamlets— Fort McMurray (formerly incorporated as a city) and Sherwood Park —are located in Alberta. They each have populations, within their main urban area, in excess of 60,000—well in excess of

975-745: A number of substances not always of identical character. In the historical architecture of Naples, Neapolitan yellow tuff is the most used building material. Piperno ignimbrite tuff was also used widely in Naples and Campania. In the Eifel region of Germany, a trachytic, pumiceous tuff called trass has been extensively worked as a hydraulic mortar . Tuff of the Eifel region of Germany has been widely used for construction of railroad stations and other buildings in Frankfurt, Hamburg, and other large cities. Construction using

1050-500: A number. House numbers might start at one side of the hamlet and continue to the other side or may have no clear organization. A hamlet may form or have formed a Bürgergemeinde (legal place of citizenship regardless of where a person was born or currently lives) and may own common property for the Bürgergemeinde . In Turkey , a hamlet is known as a mezra and denotes a small satellite settlement usually consisting of

1125-456: A parent commune . In the Russian language, there are several words which mean "a hamlet", but all of them are approximately equivalent. The most common word is деревня ( derevnia , the word meant "an arable" in the past); the words село ( selo , from the Russian word селиться ( selit'tsa ), meaning "to settle") and посёлок ( posiolok ) are quite frequently used, too. Parallel to many other cultures,

1200-403: A part of another settlement, like a village. In Romania , hamlets are called cătune (singular: cătun ), and they represent villages that contain several houses at most. They are legally considered villages, and statistically, they are placed in the same category. Like villages, they do not have a separate administration, and thus are not an administrative division, but are part of

1275-460: A place without either for being too small to meaningfully support those. Even without state pressure, once one of the neighboring khutor s got a permanent shop, school, community center (known in Russia as дом культуры, "house of culture"), maybe a medical post, others would naturally relocate closer, drawing together into one village. Thus, the diminutive form деревенька ( derevenka , tiny derevnia )

1350-474: A plethora of smaller crags and knolls , separated by shallow valleys and bogs, giving the high fell an uneven and chaotic appearance. Water plays an important role in defining the character of Birker Fell. Between the crags flow many small streams, known as becks or gills in the local terminology. Many of the becks rise in one of the numerous bogs which occur in the area, the largest of which are White Moss , Sike Moss , Tewitt Moss and Foxbield Moss . At

1425-540: A specific service, such as water, sewer, or lighting to provide only that hamlet with services. A hamlet could be described as the rural or suburban equivalent of a neighborhood in a city or village. The area of a hamlet may not be exactly defined; it may be designated by the Census Bureau , or it may rely on some other form of border (such as a ZIP Code , school district or fire district for more urbanized areas; rural hamlets are typically only demarcated by speed zones on

1500-458: A village. The term Lieu-dit is also applied to hamlets, but this can also refer to uninhabited localities. During the 18th century, it was fashionable for rich or noble people to create their own hameau in their gardens . This was a group of houses or farms with rustic appearance, but in fact very comfortable. The best known are the Hameau de la Reine built by the queen Marie-Antoinette in

1575-584: Is ferm toun , used in the specific case of a farm settlement, including outbuildings and agricultural workers' homes. The term hamlet was used in Wales to denote a geographical subdivision of a parish (which might or might not contain a settlement). Elsewhere, mostly in England, these subdivisions were called "townships" or "tithings". The Welsh word for "hamlet" is pentrefan (also pentrefyn ). Both these words are diminutives of pentref ("village") with

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1650-436: Is a form of travertine . The material that is expelled in a volcanic eruption can be classified into three types: Tephra is made when magma inside the volcano is blown apart by the rapid expansion of hot volcanic gases. Magma commonly explodes as the gas dissolved in it comes out of solution as the pressure decreases when it flows to the surface . These violent explosions produce particles of material that can then fly from

1725-462: Is also built almost entirely from tuff. The Romans also cut tuff into small, rectangular stones that they used to create walls in a pattern known as opus reticulatum . Peperino has been used in Rome and Naples as a building stone, is a trachyte tuff. Pozzolana also is a decomposed tuff, but of basic character, originally obtained near Naples and used as a cement , but this name is now applied to

1800-510: Is also used for designating small groups of rural dwellings or farmhouses. A hamlet in Spain is a human settlement, usually located in rural areas, and typically smaller in size and population than a village (called in Spain, pueblo Spanish: [ˈpweβlo] ). The hamlet is a common territorial organisation in the North West of Spain ( Asturias , Cantabria and Galicia ) dependent on

1875-820: Is an example of a tuff cone, as is the island of Ka'ula . The glassy basaltic ash produced in such eruptions rapidly alters to palagonite as part of the process of lithification. Although conventional mafic volcanism produce little ash, such ash as is formed may accumulate locally as significant deposits. An example is the Pahala ash of Hawaii island, which locally is as thick as 15 meters (49 ft). These deposits also rapidly alter to palagonite, and eventually weather to laterite . Basaltic tuffs are also found in Skye , Mull , Antrim , and other places, where Paleogene volcanic rocks are found; in Scotland, Derbyshire , and Ireland among

1950-505: Is as a building material. In the ancient world, tuff's relative softness meant that it was commonly used for construction where it was available. Tuff is common in Italy, and the Romans used it for many buildings and bridges. For example, the whole port of the island of Ventotene (still in use), was carved from tuff. The Servian Wall , built to defend the city of Rome in the fourth century BC,

2025-521: Is called a welded lapilli -tuff. Welded tuffs (and welded lapilli-tuffs) can be of fallout origin, or deposited from ash flows, as in the case of ignimbrites . During welding, the glass shards and pumice fragments adhere together (necking at point contacts), deform, and compact together, resulting in a eutaxitic fabric . Welded tuff is commonly rhyolitic in composition, but examples of all compositions are known. A sequence of ash flows may consist of multiple cooling units . These can be distinguished by

2100-463: Is called lapillistone (particles 2 mm to 64 mm in diameter) or agglomerate or pyroclastic breccia (particles over 64 mm in diameter) rather than tuff. Volcanic ash can vary greatly in composition, and so tuffs are further classified by the composition of the ash from which they formed. Ash from high-silica volcanism, particularly in ash flows, consists mainly of shards of volcanic glass , and tuff formed predominantly from glass shards

2175-487: Is common in Italy, the Romans used it often for construction. The Rapa Nui people used it to make most of the moai statues on Easter Island . Tuff can be classified as either igneous or sedimentary rock . It is usually studied in the context of igneous petrology , although it is sometimes described using sedimentological terms. Tuff is often erroneously called tufa in guidebooks and in television programs but tufa

2250-533: Is described as vitric tuff. The glass shards are typically either irregular in shape or are roughly triangular with convex sides. They are the shattered walls of countless small bubbles that formed in the magma as dissolved gases rapidly came out of solution. Tuffs formed from ash consisting predominantly of individual crystals are described as crystal tuffs, while those formed from ash consisting predominantly of pulverized rock fragments are described as lithic tuffs. The chemical composition of volcanic ash reflects

2325-598: Is in tuff and ignimbrite in the Basin and Range Province in Nevada . In Napa Valley and Sonoma Valley , California , areas made of tuff are routinely excavated for storage of wine barrels. Tuff from Rano Raraku was used by the Rapa Nui people of Easter Island to make the vast majority of their famous moai statues. Tuff is used extensively in Armenia and Armenian architecture . It

Birker Fell - Misplaced Pages Continue

2400-500: Is in widespread, albeit unofficial, use to denote such settlements, which mostly possess the amenities of a village yet the size of hamlet. In Spain , a hamlet is called lugar , aldea or cortijada ( Spanish: [koɾtiˈxaða] ). The word comes from the Spanish term cortijo («estate»). In the South of Spain, the term caserío ( Spanish: [kaseˈɾi.o] )

2475-504: Is known as tephrochronology and is particularly useful for Quaternary chronostratigraphy. Individual tuff beds can be "fingerprinted" by their chemical composition and phenocryst assemblages. Absolute ages for tuff beds can be determined by K-Ar , Ar-Ar , or carbon-14 dating . Zircon grains found in many tuffs are highly durable and can survive even metamorphism of the host tuff to schist, allowing absolute ages to be assigned to ancient metamorphic rocks. For example, dating of zircons in

2550-494: Is part of a larger municipality. In different states of India , there are different words for hamlet. In Haryana and Rajasthan , it is called " dhani " ( Hindi : ढाणी ḍhāṇī ) or "Thok" . In Gujarat , a hamlet is called a "nesada" , which are more prevalent in the Gir forest . In Maharashtra , it is called a "pada" . In southern Bihar, especially in the Magadh division ,

2625-574: Is the dominant type of stone used in construction in Armenia's capital Yerevan , Gyumri , Armenia's second largest city, and Ani , the country's medieval capital, now in Turkey. A small village in Armenia was renamed Tufashen (literally "village of tuff") in 1946. Tuffs are deposited geologically instantaneously and often over a large region. This makes them highly useful as time-stratigraphic markers. The use of tuffs and other tephra deposits in this manner

2700-697: The Rochlitz Porphyr , can be seen in the Mannerist -style sculpted portal outside the chapel entrance in Colditz Castle . The trade name Rochlitz Porphyr is the traditional designation for a dimension stone of Saxony with an architectural history over 1,000 years in Germany. The quarries are located near Rochlitz. Yucca Mountain nuclear waste repository , a U.S. Department of Energy terminal storage facility for spent nuclear reactor and other radioactive waste,

2775-625: The Borrowdale Volcanic Group (BVG). The BFF forms the lowest, and hence oldest, portion of this famous sequence of andesite and dacite volcanic rocks. The Birker Fell Andesite occurs throughout much of the western Lake District. The BVG are thought to have formed in the early Ordovician by island arc volcanic activity, due to subduction during the closing of the Iapetus Ocean . The central and northern areas of Birker Fell are dominated by composite andesite lava flows. Within

2850-603: The Carboniferous strata, and among the still older rocks of the Lake District, the southern uplands of Scotland, and Wales. They are black, dark green, or red in colour; vary greatly in coarseness, some being full of round spongy bombs a foot or more in diameter; and being often submarine, may contain shale, sandstone, grit, and other sedimentary material, and are occasionally fossiliferous. Recent basaltic tuffs are found in Iceland ,

2925-556: The Faroe Islands , Jan Mayen , Sicily, the Hawaiian Islands , Samoa , etc. When weathered, they are filled with calcite, chlorite, serpentine , and especially where the lavas contain nepheline or leucite , are often rich in zeolites , such as analcite , prehnite , natrolite , scolecite , chabazite , heulandite , etc. Ultramafic tuffs are extremely rare; their characteristic is the abundance of olivine or serpentine and

3000-591: The Lava Creek Tuff erupted from Yellowstone Caldera in Wyoming 631,000 years ago. This tuff had an original volume of at least 1,000 cubic kilometers (240 cu mi). Lava Creek tuff is known to be at least 1000 times as large as the deposits of the 1980 eruption of Mount St. Helens , and it had a Volcanic Explosivity Index (VEI) of 8, greater than any eruption known in the last 10,000 years. Ash flow tuffs cover 7,000 square kilometers (2,700 sq mi) of

3075-456: The North Island of New Zealand and about 100,000 square kilometers (39,000 sq mi) of Nevada . Ash flow tuffs are the only volcanic product with volumes rivaling those of flood basalts . The Tioga Bentonite of the northeastern United States varies in composition from crystal tuff to tuffaceous shale. It was deposited as ash carried by wind that fell out over the sea and settled to

Birker Fell - Misplaced Pages Continue

3150-515: The Pentland Hills , the Cheviots , and many other districts of Great Britain , ancient rocks of exactly similar nature are abundant. In color, they are red or brown; their scoriae fragments are of all sizes from huge blocks down to minute granular dust. The cavities are filled with many secondary minerals, such as calcite , chlorite , quartz, epidote , or chalcedony; in microscopic sections, though,

3225-733: The Rhine (at Siebengebirge ), in Ischia and near Naples . Trachyte-carbonatite tuffs have been identified in the East African Rift . Alkaline crystal tuffs have been reported from Rio de Janeiro . Andesitic tuffs are exceedingly common. They occur along the whole chain of the Cordilleras and Andes , in the West Indies , New Zealand, Japan, etc. In the Lake District , North Wales, Lorne ,

3300-506: The Town of Hempstead , with a population of over 50,000, are more populous than some incorporated cities in the state. In Oregon , specifically in Clackamas County , a hamlet is a form of local government for small communities that allows the citizens therein to organize and co-ordinate community activities. Hamlets do not provide services, such as utilities or fire protection, and do not have

3375-401: The lugar , though its buildings can be also organised in streets and plazas. In the four national languages, hamlets are known as Weiler (German), hameaux (French), frazioni (Italian) and fracziun ( Romansh ). A hamlet is always part of a larger municipality or may be shared between two municipalities. The difference between a hamlet and a village is that typically

3450-488: The 10,000-person threshold that can choose to incorporate as a city in Alberta. As such, these two hamlets have been further designated by the Province of Alberta as urban service areas . An urban service area is recognized as equivalent to a city for the purposes of provincial and federal program delivery and grant eligibility. A hamlet, French: hameau , is a group of rural dwellings, usually too small to be considered

3525-587: The Devoke Water Member occurs to the south-west of Devoke Water itself, on Ulpha Fell. The south and south-eastern portion of the fell is composed of a sequence of tuff beds with highly variable composition: from rhyolitic through to basaltic. These overlie the BFF and form the next section of the BVG sequence. In the north-western corner of Birker Fell, extensive faulting has juxtaposed the BVG rocks against granites of

3600-602: The Old French hamelet came to apply to small human settlements. The word comes from Anglo-Norman hamelet , corresponding to Old French hamelet , the diminutive of Old French hamel meaning a little village. This, in turn, is a diminutive of Old French ham , possibly borrowed from ( West Germanic ) Franconian languages . It is related to the modern French hameau , Dutch heem , Frisian hiem , German Heim , Old English hām , and Modern English home . In Afghanistan ,

3675-742: The andesitic lava flows, the Great Whinscale Dacite lava flow and the associated, underlying Little Stand Tuff form a marker band that runs northeast-southwest across the fell, but are best seen at Silver How ( grid reference SD195983 ) and Great Whinscale ( SD197989 ). A small area of basaltic material occurs approximately 1 km north of Birkerthwaite, composed of plagioclase - and pyroxene - phyric andesite-basalt lavas (the Birkby Fell Member ), and tuff and lapilli -tuffs (the Devoke Water Member ). The main outcrop of

3750-457: The areas where such tuffs are prominent. In the ancient rocks of Wales , Charnwood , etc., similar tuffs are known, but in all cases, they are greatly changed by silicification (which has filled them with opal , chalcedony , and quartz) and by devitrification. The frequent presence of rounded corroded quartz crystals, such as occur in rhyolitic lavas, helps to demonstrate their real nature. Welded ignimbrites can be highly voluminous, such as

3825-401: The ash is lithified into a solid rock. Rock that contains greater than 75% ash is considered tuff, while rock containing 25% to 75% ash is described as tuffaceous (for example, tuffaceous sandstone ). Tuff composed of sandy volcanic material can be referred to as volcanic sandstone . Tuff is a relatively soft rock, so it has been used for construction since ancient times. Because it

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3900-504: The authority to levy taxes or fees. There are four hamlets in Oregon: Beavercreek , Mulino , Molalla Prairie , and Stafford . In Vietnam , a hamlet ( xóm , ấp ) is the smallest unofficial administrative unit. It is a subdivision of a commune or township ( xã ). Tuff Tuff is a type of rock made of volcanic ash ejected from a vent during a volcanic eruption . Following ejection and deposition,

3975-479: The bottom. It is Devonian in age and likely came from a vent in central Virginia , where the tuff reaches its maximum thickness of about 40 meters (130 ft). Trachyte tuffs contain little or no quartz, but much sanidine or anorthoclase and sometimes oligoclase feldspar, with occasional biotite, augite, and hornblende. In weathering, they often change to soft red or yellow claystones , rich in kaolin with secondary quartz. Recent trachyte tuffs are found on

4050-519: The civil parish of Buckland . Hamlets may have been formed around a single source of economic activity such as a farm, mill, mine or harbour that employed its working population. Some hamlets may be the result of the depopulation of a village ; examples of such a hamlet are Graby and Shapwick . Because of the hilly topography of the parish, the village of Clent , situated on the Clent Hills , consists of five distinct hamlets. In Northern Ireland ,

4125-559: The common Irish place name element baile is sometimes considered equivalent to the term hamlet in English, although baile would actually have referred to what is known in English today as a townland : that is to say, a geographical locality rather than a small village. In the Scottish Highlands , the term clachan , of Gaelic derivation, may be preferred to the term hamlet . Also found in Scotland more generally

4200-685: The corresponding lavas and sills . Some chlorite-schists also are probably altered beds of volcanic tuff. The "Schalsteins" of Devon and Germany include many cleaved and partly recrystallized ash-beds, some of which still retain their fragmental structure, though their lapilli are flattened and drawn out. Their steam cavities are usually filled with calcite, but sometimes with quartz. The more completely altered forms of these rocks are platy, green chloritic schists; in these, however, structures indicating their original volcanic nature only sparingly occur. These are intermediate stages between cleaved tuffs and crystalline schists. The primary economic value of tuff

4275-651: The counterpart of the hamlet is the qala ( Dari : قلعه, Pashto : کلي) meaning "fort" or "hamlet". The Afghan qala is a fortified group of houses, generally with its own community building such as a mosque, but without its own marketplace. The qala is the smallest type of settlement in Afghan society, outsized by the village ( Dari / Pashto : ده), which is larger and includes a commercial area. In Canada's three territories , hamlets are officially designated municipalities . As of January 1, 2010: In Canada's provinces, hamlets are usually small unincorporated communities within

4350-404: The degree of welding. The base of a cooling unit is typically unwelded due to chilling from the underlying cold surface, and the degree of welding and of secondary reactions from fluids in the flow increases upwards towards the center of the flow. Welding decreases towards the top of the cooling unit, where the unit cools more rapidly. The intensity of welding may also decrease towards areas in which

4425-426: The deposit is thinner, and with distance from source. Cooler pyroclastic flows are unwelded and the ash sheets deposited by them are relatively unconsolidated. However, cooled volcanic ash can quickly become lithified because it usually has a high content of volcanic glass. This is a thermodynamically unstable material that reacts rapidly with ground water or sea water, which leaches alkali metals and calcium from

4500-428: The entire range of volcanic rock chemistry, from high-silica rhyolitic ash to low-silica basaltic ash, and tuffs are likewise described as rhyolitic, andesitic, basaltic, and so on. The most straightforward way for volcanic ash to move away from the vent is as ash clouds that are part of an eruption column . These fall to the surface as fallout deposits that are characteristically well-sorted and tend to form

4575-529: The fell to the village of Ulpha in the Duddon Valley. The northern edge of the fell is marked by a steep range of crags which drop sharply to the floor of Eskdale. These crags are cut by the cascades of Stanley Force and Birker Force , two of the most spectacular waterfalls in the Lake District. Geologically, Birker Fell is of importance as the type locality of the Birker Fell Formation (BFF) of

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4650-444: The glass. New minerals, such as zeolites , clays , and calcite , crystallize from the dissolved substances and cement the tuff. Tuffs are further classified by their depositional environment, such as lacustrine tuff, subaerial tuff, or submarine tuff, or by the mechanism by which the ash was transported, such as fallout tuff or ash flow tuff. Reworked tuffs, formed by erosion and redeposition of ash deposits, are usually described by

4725-569: The green slates of the English Lake District are finely cleaved ashes. In Charnwood Forest also, the tuffs are slaty and cleaved. The green color is due to the large development of chlorite. Among the crystalline schists of many regions, green beds or green schists occur, which consist of quartz, hornblende, chlorite or biotite, iron oxides , feldspar, etc., and are probably recrystallized or metamorphosed tuffs. They often accompany masses of epidiorite and hornblende – schists which are

4800-442: The late Ordovician Eskdale Intrusion . Hamlet (place) A hamlet is a human settlement that is smaller than a town or village . This is often simply an informal description of a smaller settlement or possibly a subdivision or satellite entity to a larger settlement. Sometimes a hamlet is defined for official or administrative purposes. The word and concept of a hamlet can be traced back to Norman England , where

4875-574: The loose meaning of "small village". In Mississippi , a 2009 state law (§ 17-27-5) set aside the term "municipal historical hamlet" to designate any former city, town, or village with a current population of less than 600 inhabitants that lost its charter before 1945. The first such designation was applied to Bogue Chitto, Lincoln County . In New York, hamlets are unincorporated settlements within towns . Hamlets are not legal entities and have no local government or official boundaries. Their approximate locations will often be noted on road signs, however,

4950-496: The mountains) or scattered (more often in the plains). In North West Germany, a group of scattered farms is called Bauerschaft . In a Weiler, there are no street names, the houses are just numbered. There is no legal definition of a hamlet in Germany. In Bavaria, like in Austria, a Weiler is defined as a settlement with 3 to 9 dwellings, from 10 houses it is called a village. A hamlet does not usually form its own administrative unit, but

5025-655: The nature of the original lava can nearly always be made out from the shapes and properties of the little crystals which occur in the decomposed glassy base. Even in the smallest details, these ancient tuffs have a complete resemblance to the modern ash beds of Cotopaxi , Krakatoa , and Mont Pelé. Mafic volcanism typically takes the form of Hawaiian eruptions that are nonexplosive and produce little ash. However, interaction between basaltic magma and groundwater or sea water results in hydromagmatic explosions that produce abundant ash. These deposit ash cones that subsequently can become cemented into tuff cones. Diamond Head, Hawaii ,

5100-503: The park of the Château de Versailles , and the Hameau de Chantilly built by Louis Joseph, Prince of Condé in Chantilly, Oise . The German word for hamlet is Weiler ( German: [ˈva͡ɪlɐ] ). A Weiler has, compared to a Dorf (village), no infrastructure (i.e. no inn, no school, no store, no church). The houses and farms of a Weiler can be grouped (in the hills and

5175-431: The roads serving them). Others, such as Forestville, New York , will be the remnants of former villages, with borders coextant with the previously defined borders of the defunct or dissolved village. Some hamlets proximate to urban areas are sometimes continuous with their cities and appear to be neighborhoods, but they still are under the jurisdiction of the town. Some localities designated as hamlets, such as Levittown in

5250-649: The scarcity or absence of feldspar and quartz . Occurrences of ultramafic tuff include surface deposits of kimberlite at maars in the diamond -fields of southern Africa and other regions. The principal variety of kimberlite is a dark bluish-green, serpentine-rich breccia (blue-ground) which, when thoroughly oxidized and weathered, becomes a friable brown or yellow mass (the "yellow-ground"). These breccias were emplaced as gas–solid mixtures and are typically preserved and mined in diatremes that form intrusive pipe-like structures. At depth, some kimberlite breccias grade into root zones of dikes made of unfragmented rock. At

5325-419: The surface can be transported as mud flows ( lahars ) when mingled with water from rainfall or through eruption into a body of water or ice. Particles of volcanic ash that are sufficiently hot will weld together after settling to the surface, producing a welded tuff . Welding requires temperatures in excess of 600 °C (1,100 °F). If the rock contains scattered, pea-sized fragments or fiamme in it, it

5400-569: The surface, ultramafic tuffs may occur in maar deposits. Because kimberlites are the most common igneous source of diamonds, the transitions from maar to diatreme to root-zone dikes have been studied in detail. Diatreme- facies kimberlite is more properly called an ultramafic breccia rather than a tuff. Komatiite tuffs are found, for example, in the greenstone belts of Canada and South Africa. In course of time, changes other than weathering may overtake tuff deposits. Sometimes, they are involved in folding and become sheared and cleaved . Many of

5475-479: The transport agent, such as aeolian tuff or fluvial tuff. Tuffs have the potential to be deposited wherever explosive volcanism takes place, and so have a wide distribution in location and age. Rhyolite tuffs contain pumiceous, glassy fragments and small scoriae with quartz , alkali feldspar , biotite , etc. Iceland, Lipari, Hungary, the Basin and Range of the American southwest, and New Zealand are among

5550-480: The volcano. Solid particles smaller than 2 mm in diameter ( sand-sized or smaller) are called volcanic ash. Volcanic ash is further divided into fine ash, with particle sizes smaller than 0.0625 mm in diameter, and coarse ash, with particle sizes between 0.0625 mm and 2 mm in diameter. Tuff is correspondingly divided into coarse tuff (coarse ash tuff) and fine tuff (fine ash tuff or dust tuff). Consolidated tephra composed mostly of coarser particles

5625-410: The western edge of the fell lies Devoke Water , which claims the title of largest tarn in the Lake District. It lies at an altitude of 235 m (770 ft) and is approximately 1 km long (east-west) and 0.4 km wide. The southern border between Birker Fell and Ulpha Fell traces a line between Devoke Water and the valley of Crosby Gill , a large stream that drops down the southern flanks of

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